Calculations topic guide
Prorations and transfer fees for the Illinois exam
Before reaching for a formula, ask two questions: which period belongs to each party, and who already has the money? Those answers determine the closing adjustment. Transfer taxes are a separate calculation, so finish the proration before changing to the tax base and rate.
Last reviewed:
The short answer
A proration allocates an income or expense over the stated ownership or benefit period. Divide the full-period amount by the specified day or month base, then multiply by the applicable units. For an unpaid seller-period expense the buyer will pay later, debit the seller and credit the buyer. A transferable prepaid benefit for the buyer generally reverses that adjustment. Illinois state transfer tax is $0.50 per $500 of taxable value or fraction; the authorized county layer, when applicable, is $0.25 per $500 or fraction. Municipal rules are separate.
The PSI outline effective June 24, 2026 lists real property tax and other prorations, plus transfer fees, within the whole national broker Calculations category: 7%, or 7 of 100 scored questions. That is not a quota for each topic. These original exercises use explicit conventions. The contract and applicable rules govern actual closings; no universal Illinois closing-day assignment, day-count method or tax-proration percentage is supplied here.
From the time line to the closing entry
- Identify the item and requested result: proration adjustment, tax, recording charge or final funds. They are different tasks.
- Establish payment status. Has the seller prepaid an expense, collected income, or left an expense for the buyer to pay?
- Write both parts of the time method: the denominator and how chargeable days or months are counted. A 360-day denominator alone does not mean twelve 30-day months.
- Mark the last seller day and first buyer day. Assign closing day exactly as stated, with no gap or overlap.
- Calculate the allocated share with full precision. Apply the requested money rounding at the end, rather than rounding a daily rate too early.
- For a between-party adjustment, explain who reimburses whom. A fee paid to a third party does not automatically create a credit for the other buyer or seller.
- For transfer taxes, restart with the correct taxable base, applicable exemptions and each tax layer. State and authorized county $500 units do not dictate a municipality's units or payer.
- Check the question's requested total. An adjustment is not a complete cash-to-close calculation, and an already net tax base must not have the same deduction taken again.
| Task | Stated calculation | Direction or qualification |
|---|---|---|
| Annual allocation | Annual amount x chargeable days / specified annual denominator | Day-count numerator is a separate instruction |
| Monthly allocation | Monthly amount x chargeable days / stipulated month length | Include closing day only for its assigned party |
| Unpaid seller expense, buyer pays later | Amount attributable to seller period | Seller debit; buyer credit |
| Transferable prepaid buyer benefit | Amount attributable to buyer period | Buyer debit; seller credit |
| Seller collected buyer-period rent | Rent attributable to buyer period | Seller debit; buyer credit |
| Tenant deposit held as security | Separate liability, not earned rent | Use applicable transfer rules |
| State transfer tax | Ceiling(taxable base / 500) x $0.50 | Applicable taxable transfer |
| Authorized county layer | Ceiling(taxable base / 500) x $0.25 | Only when this layer applies |
| State plus that county layer | Same taxable unit count x $0.75 | Not a total municipal or all-closing charge |
| Municipal charge | Its own applicable base, units and rate | Do not copy the state rule automatically |
| Third-party fee | Applicable fee schedule and paying party | No automatic credit to the other principal |
| Final funds | Actual price, costs, credits and other adjustments | Not just one proration or tax subtotal |
The distinctions that matter
| Distinction | How it works | What to notice |
|---|---|---|
| Accrued expense and prepaid expense | Accrued means the expense has accumulated but remains unpaid. Prepaid means money already covers a future benefit. The buyer and seller adjustment depends on who will pay or receive that benefit. | Unpaid seller-period tax to be paid later by the buyer: seller debit, buyer credit. Transferable prepaid buyer-period benefit: buyer debit, seller credit. |
| An expense and rent already collected | A seller who collected rent attributable to the buyer's period holds income belonging to that period. The adjustment transfers that share to the buyer. | Advance rent can produce seller debit and buyer credit even though it is income, not an unpaid expense. |
| A paired proration and a third-party fee | A reimbursement between buyer and seller produces corresponding entries. A recording or transfer charge payable to a government is paid to that recipient. | A seller debit for a government fee does not automatically give the buyer an equal credit. |
| A denominator and a day-count convention | Actual/360 uses real calendar days with a 360 denominator; 30/360 uses its stated 30-day-month rules with that denominator. The cited Fannie Mae interest methods demonstrate the distinction. | They are not Illinois property-tax defaults. Do not infer the numerator from 360 alone or assume actual/365 must become actual/366 in a leap year. |
| Closing day and a calendar date | Who receives the closing day determines which party includes that date. Once assigned, count actual days or the stipulated synthetic units. | Buyer owns March 2 in a non-leap year: seller January 1 through March 1 is 31 + 28 + 1 = 60 days. |
| Illinois tax billing and tax proration | IDOR describes a general two-year assessment and billing cycle. At an existing-home closing, its general guidance describes seller obligations and a preclosing credit subject to the contract. | The bill timing does not establish a universal 105% estimate, fixed denominator, closing-day owner or reproration clause. |
| A proration credit and a lender escrow deposit | A credit allocates a cost between the parties. Escrow funding sets money aside for future bills under the lender's requirements. | Do not automatically treat the same amount as two separate reimbursements or assume escrow replaces the contract adjustment. |
| Transferable prepaid benefits and an automatic policy assignment | Prorate a prepaid service, dues or insurance benefit only when its transfer and allocation are stipulated or actually supported. | A seller's paid insurance premium does not by itself prove the buyer acquires the policy or owes reimbursement. |
| Advance rent and a tenant security deposit | Rent is allocated to its applicable period. A refundable deposit held as security remains a separate liability. | For covered Illinois residential transfers, section 1.1 also preserves specified transferee and transferor liability; a closing credit does not erase every tenant claim. |
| State, county and municipal transfer taxes | The state rate is $0.50 per $500 or fraction. The county authority permits a $0.25 layer per $500 or fraction when it applies. Additional local rules can differ. | Calculate only applicable layers. Do not impose state units, exemptions or payer rules on every municipal charge. |
| Gross price and net taxable consideration | The specified taxable base can differ from a gross price. PTAX-203 identifies included personal property and a qualifying outstanding mortgage to which the transfer remains subject. | A mortgage paid off at closing is not the same exclusion as a mortgage remaining subject to the transfer; a new buyer loan is not an automatic deduction. |
| Nearest rounding and a taxable-unit ceiling | Any positive fraction of an applicable $500 unit requires another unit. An exact multiple already has a whole unit count. | Taxable $300,001 gives 601 units; taxable $250,000 gives 500, not 501. Do not turn $0.50 per $500 into 0.50%. |
| A tax exemption and who bears a cost | An exemption depends on its legal conditions. A contract allocation identifies the party bearing a charge; it does not by itself exempt the transfer or override statutory liability. | No cash, a quitclaim label or seller-paid terminology alone does not establish an exemption. |
| Tax amount, filing and evidence of payment | An exempt transfer can still have declaration requirements. Form preparation is separate from payment and recording requirements. | The form's stamp wording does not undo the statutory phaseout of paper revenue stamps after December 31, 2025; electronic stamps or alternative indicia follow the applicable process. |
Work through the facts
Prorate accrued Illinois property taxes
Annual property taxes are estimated at $7,300. Closing is April 11 in a non-leap year. Use a 365-day year, and the buyer owns the closing day. The taxes are unpaid and will be paid by the buyer later.
- Seller days are January 1 through April 10: 31 + 28 + 31 + 10 = 100 days.
- Daily tax is $7,300 / 365 = $20. Seller share is $20 x 100 = $2,000.
Answer: Debit the seller $2,000 and credit the buyer $2,000 because the buyer will pay the bill that includes the seller's ownership period.
Reimburse a prepaid association charge
The seller paid $1,200 of association dues for the entire calendar year. Closing is October 1, the buyer owns closing day, and the problem uses monthly proration.
- Monthly dues are $1,200 / 12 = $100.
- The buyer receives the benefit for October, November, and December, or three months. Reimbursement is $300.
Answer: Debit the buyer $300 and credit the seller $300 for the prepaid buyer-period benefit.
Allocate rent collected in advance
A tenant paid $2,400 rent for a 30-day month. Closing occurs on day 19, and the buyer owns the closing day. The seller already collected the full month's rent.
- Daily rent is $2,400 / 30 = $80.
- The buyer owns days 19 through 30, which is 12 days. The buyer's rent share is $80 x 12 = $960.
Answer: Debit the seller $960 and credit the buyer $960. Handle any tenant security deposit as a separate liability transfer.
Calculate Illinois state and county transfer tax
Net consideration subject to transfer tax is $412,250. The problem says both the $0.50 Illinois layer and $0.25 county layer apply, with no municipal tax.
- $412,250 / $500 = 824.5, so round up to 825 taxable units.
- State tax is 825 x $0.50 = $412.50. County tax is 825 x $0.25 = $206.25.
Answer: Total state and county transfer tax is $618.75. Do not round 824.5 down and do not add an unstated municipal charge.
One denominator, two possible day counts
Compare two expressly stipulated classroom calculations for the same $3,600 annual amount. For this period, the problem supplies 31 actual days under actual/360 and 30 synthetic days under its stated 30/360 method. No Illinois default is implied.
- Both use $3,600 / 360 = $10 per chargeable day.
- The actual/360 allocation is $10 x 31 = $310; the stipulated 30/360 allocation is $10 x 30 = $300.
- The denominator alone did not determine the number of chargeable days. End-of-month variants require their own instructions.
Answer: The stated results are $310 and $300, not one universal 360-day result.
Carry daily precision to the final amount
Allocate $1,000 over 100 chargeable days using an expressly stated actual-day numerator and fixed 365 denominator. Round only the final amount to cents.
- Calculate $1,000 x 100 / 365 = $273.972602... .
- Final rounding gives $273.97.
- Rounding the daily rate to $2.74 first would give $274.00; that is not the instructed method.
Answer: The stated allocation is $273.97.
A contract factor is an assumption, not a statewide percentage
A hypothetical contract expressly directs use of 105% of a $10,000 prior annual tax bill, a fixed 365 denominator and 100 seller days. The buyer will pay the later bill. Round the final amount to cents.
- The contract estimate is $10,000 x 1.05 = $10,500.
- $10,500 x 100 / 365 = $2,876.712328... , giving $2,876.71.
- The 105% factor belongs to this hypothetical instruction. It is not a statement that Illinois requires that percentage or that the final bill must equal the estimate.
Answer: Under these stated facts, debit the seller and credit the buyer $2,876.71.
A government fee is not a buyer reimbursement
A classroom closing ledger assigns a separate $200 government recording fee solely to the seller, paid to the recorder at closing. Assume no reimbursement, fee credit or other adjustment between the principals.
- The seller bears the $200 charge under the stated instruction.
- The recorder is the recipient. The buyer does not receive $200 merely because the seller has a debit.
- This is not a paired proration, and it is not a complete settlement statement or a current recorder-fee quote.
Answer: The stated seller charge is $200, with no automatic matching buyer credit.
Use the fictional local rule on its own units
For this classroom exercise only, the base is $412,250 and both the state and authorized county layers apply. A fictional local layer is $2 per $1,000 or fraction on that same base. No other layer or cost applies.
- State and county use ceiling($412,250 / $500) = 825 units; their subtotal is $412.50 + $206.25 = $618.75.
- The fictional local rule instead uses ceiling($412,250 / $1,000) = 413 units; 413 x $2 = $826.
- Add only these specified layers: $618.75 + $826 = $1,444.75. This hypothetical local rate is not a quote from a real ordinance.
Answer: The specified three-layer total is $1,444.75; do not reuse the $500 unit count for the fictional local rule.
Subtract stipulated qualifying amounts from full consideration once
In a simplified PTAX-203 exercise, full actual consideration is $450,000, already including $10,000 of valid personal property and a $100,000 existing mortgage. The deed states that the transferred property remains subject to that mortgage. Both deductions qualify; no other adjustment, exemption or municipal tax applies. The state and authorized county layers apply.
- The given full consideration already includes both amounts. Subtract each stipulated qualifying amount once: $450,000 - $10,000 - $100,000 = $340,000.
- The net base has 680 units of $500. State tax is $340; county tax is $170; the subtotal is $510.
- A loan paid off at closing or a new buyer loan would not establish the same subject-to exclusion. A problem supplying an already net base must not have the same mortgage deducted again. Actual form rounding and supporting facts still matter; these amounts are already whole dollars.
Answer: The stipulated net base is $340,000 and state-plus-county subtotal is $510, not a complete tax return or all-closing-cost calculation.
Mistakes to avoid
- Treating every 360-day problem as twelve 30-day months Read the day-count numerator and annual denominator separately.
- Counting closing day for both parties Mark the final seller day and first buyer day before calculating.
- Inventing February 29 in a non-leap year March 1 is one March day; January 31 + February 28 + March 1 is 60 days.
- Rounding a daily rate before multiplying Carry precision unless the problem expressly requires intermediate rounding.
- Reversing every adjustment just because it is income Identify who already holds the buyer-period rent.
- Giving the other principal a credit for every fee Third-party payment and between-party reimbursement are different entries.
- Using 105% as the mandatory Illinois proration factor Use the actual contract or stated exercise factor.
- Assuming every prepaid insurance policy transfers Transferability and the benefit being allocated must be supported.
- Including a tenant deposit in earned rent Account for the separate security liability and applicable transfer law.
- Rounding taxable $500 units to nearest Use the ceiling, while keeping an exact whole unit unchanged.
- Calling $0.50 per $500 a 0.50% tax Use dollars per unit, not an invented percentage.
- Subtracting a new mortgage or a seller payoff from every tax base Use the actual subject-to condition; do not deduct twice from a supplied net base.
- Treating a tax exemption as no filing or local charges Check each applicable exemption and process separately.
- Treating a personal practice target as a proven pass probability No validated readiness cutoff is established for these original questions.
Check your understanding
These are original teaching questions, not recalled or predicted PSI questions. Answer first, then explain why the other choices fail.
1. Annual property taxes are $5,840. Closing is March 2 in a non-leap year, the buyer owns closing day, and taxes are accrued. Using a 365-day year, what credit does the buyer receive for the seller's period?
- $944
- $960
- $976
- $1,440
Show answer and explanation
Answer: B. $960
Seller days are January 1 through March 1: 31 + 28 + 1 = 60. Daily tax is $5,840 / 365 = $16. The buyer credit and seller debit are $16 x 60 = $960. February still has 28 days; March 1 supplies the remaining day.
2. The seller prepaid a $720 annual service plan that transfers with the property. Six months remain for the buyer. Which entry is correct?
- Seller debit and buyer credit for $360
- Buyer debit and seller credit for $60
- Buyer debit and seller credit for $360
- Buyer debit and seller credit for $720
Show answer and explanation
Answer: C. Buyer debit and seller credit for $360
The buyer reimburses the seller for the unused half of the transferable prepaid benefit: $720 / 2 = $360.
3. Taxable consideration is $300,001. How many $500 Illinois transfer-tax units apply?
- 601
- 600.002
- 600
- 602
Show answer and explanation
Answer: A. 601
$300,001 / $500 = 600.002, and PTAX-203 requires rounding to the next highest whole number, which is 601 units.
4. Taxable consideration is $250,000, and the question says the Illinois state and county layers apply. No municipal tax applies. What is the combined charge?
- $1,250
- $250
- $375
- $500
Show answer and explanation
Answer: C. $375
$250,000 / $500 = 500 units. State tax is $250 and county tax is $125, for a $375 total.
5. A seller collected the full $3,000 rent for a 30-day month. The buyer owns days 21 through 30. What settlement adjustment transfers the buyer's share?
- Seller debit and buyer credit for $1,000
- Seller debit and buyer credit for $3,000
- Seller debit and buyer credit for $2,000
- Buyer debit and seller credit for $1,000
Show answer and explanation
Answer: A. Seller debit and buyer credit for $1,000
Daily rent is $100, and the buyer owns 10 days. The seller holds $1,000 of income attributable to the buyer's ownership period, so the seller is debited and buyer credited.
6. A calculation states only that its annual denominator is 360. Does that alone establish twelve 30-day months?
- Yes, because every Illinois contract uses 30/360
- Yes, actual days are prohibited
- No; the day-count numerator also needs its own instruction
- No; 360 can never be used for a real estate calculation
Show answer and explanation
Answer: C. No; the day-count numerator also needs its own instruction
Actual/360 and 30/360 can share a denominator while using different day counts. The cited interest methods are a counterexample, not an Illinois tax-proration default.
7. The problem expressly supplies 31 actual days, a $3,600 annual amount and actual/360. What is the allocation?
- $310
- $300
- $3,600
- $360
Show answer and explanation
Answer: A. $310
$3,600 x 31 / 360 = $310. Do not replace the supplied actual-day count with 30 merely because the denominator is 360.
8. Allocate $1,000 over 100 days with a fixed 365 denominator, rounding only the final money amount. What is the result?
- $273.00
- $365.00
- $273.97
- $274.00
Show answer and explanation
Answer: C. $273.97
$100,000 / 365 = $273.972602... , so the final result is $273.97. Premature daily rounding would give a different amount.
9. A hypothetical contract expressly uses 105% of a $10,000 annual bill, 100 seller days and a fixed 365 denominator. The buyer pays the later bill. What is the seller-period adjustment, rounded at the end?
- Seller debit and buyer credit $2,739.73
- Buyer debit and seller credit $2,876.71
- Seller debit and buyer credit $2,876.71
- Seller debit and buyer credit $10,500
Show answer and explanation
Answer: C. Seller debit and buyer credit $2,876.71
Use the stipulated estimate $10,500, then multiply by 100/365 to get $2,876.71. The contract assumption is not a mandatory Illinois percentage.
10. A separate $200 government recording charge is assigned solely to the seller and paid to the recorder, with no reimbursement between the principals. Does that automatically give the buyer a $200 credit?
- Yes; a recording fee is always prepaid buyer-period rent
- No; recording charges can never be assigned to a seller
- No; the recorder is the recipient, and no buyer reimbursement is stated
- Yes; every seller debit is a buyer credit
Show answer and explanation
Answer: C. No; the recorder is the recipient, and no buyer reimbursement is stated
This is a third-party charge, not a between-party proration. Its presence does not create a second benefit to the buyer.
11. A seller paid an insurance premium. The facts do not say the policy or unused benefit transfers to the buyer. What should you avoid assuming?
- The payment has a time period
- Transferability matters to a reimbursement
- The actual policy and agreement matter
- The buyer automatically owes a proration reimbursement
Show answer and explanation
Answer: D. The buyer automatically owes a proration reimbursement
A paid premium does not alone establish a transferred buyer benefit. A classroom insurance-proration example must stipulate that assumption, or actual documents must support it.
12. What is the relationship between a tax-proration credit and initial lender escrow funding?
- Both are automatically municipal transfer taxes
- They are always the same entry
- They perform different functions and need separate treatment without duplicate counting
- Escrow makes the seller period disappear
Show answer and explanation
Answer: C. They perform different functions and need separate treatment without duplicate counting
The credit allocates costs between the parties; lender escrow reserves funds for future bills. Use the actual figures rather than assuming one eliminates or duplicates the other.
13. A refundable tenant deposit is held solely as security and has not been applied to rent. How should it be treated in this exercise?
- As earned rent for the closing day
- As a transfer-tax deduction automatically
- As the seller's free proceeds
- As a separate liability, subject to applicable transfer rules
Show answer and explanation
Answer: D. As a separate liability, subject to applicable transfer rules
It is not rent earned merely by holding it. For covered Illinois residential transfers, section 1.1 addresses transferee liability and preserves specified transferor liability.
14. The problem supplies a positive NET taxable base of $250,000 after all valid adjustments. May the same mortgage deduction already included be subtracted again?
- No, because a taxable base can never differ from price
- Yes, if the buyer has a new loan
- No; that would deduct the same amount twice
- Yes, every mortgage is deducted twice
Show answer and explanation
Answer: C. No; that would deduct the same amount twice
Use the supplied net base once. A qualifying mortgage remaining subject to a transfer differs from a payoff or new financing, and the same deduction is not repeated.
15. Taxable consideration is an exact $250,000 and the $500 unit rule applies. What is the unit count?
- 501
- 500.5
- 500
- 499
Show answer and explanation
Answer: C. 500
The quotient is already exactly 500. A ceiling does not add another unit to an exact whole number.
16. A seller agrees to bear a charge in the contract. What does that agreement establish by itself?
- That the transfer is tax exempt
- That every municipal rate equals the state rate
- A stated allocation, not a tax exemption or automatic override of statutory liability
- That no declaration can be required
Show answer and explanation
Answer: C. A stated allocation, not a tax exemption or automatic override of statutory liability
Allocation identifies who bears a cost under the agreement. Taxability, filing requirements and statutory liability require their own rules.
17. For a fictional classroom problem only, the local tax is $2 per $1,000 or fraction on the same $412,250 base. The stipulated state and county subtotal is $618.75. What is the total of these specified layers?
- $1,444.75
- $618.75
- $2,268.75
- $1,443.25
Show answer and explanation
Answer: A. $1,444.75
The fictional local rule gives ceiling(412.25) = 413 units, or $826. Add the supplied $618.75 to get $1,444.75. This is not a real municipality's rate or a complete closing-cost quote; its $1,000 units differ from the state/county $500 rule.
18. For a simplified PTAX-203 exercise, full actual consideration is $450,000, already including $10,000 valid personal property and a $100,000 existing mortgage that the deed states remains subject to the transfer. Both stated deductions qualify, no other adjustment or exemption applies, and the state and authorized county layers apply with no municipal tax. What is their subtotal?
- $510
- $660
- $675
- $525
Show answer and explanation
Answer: A. $510
The stipulated net base is $450,000 - $10,000 - $100,000 = $340,000. That gives 680 units: state $340 plus county $170 = $510. Do not deduct that same mortgage again, treat a payoff or new buyer loan as the stated exclusion, or subtract debt not already included in the given full consideration.
19. For the actual-consideration exemption in 35 ILCS 200/31-45(e) alone, does consideration of exactly $100 satisfy the stated threshold? Assume no other exemption is established.
- No; that threshold is less than $100, not $100 or less
- Yes; every transfer below $500 is exempt
- Yes; the threshold includes exactly $100
- No; the threshold is a property-tax assessment deduction
Show answer and explanation
Answer: A. No; that threshold is less than $100, not $100 or less
Exactly $100 does not meet the less-than-$100 condition. That answer alone does not decide every other exemption, local charge or declaration requirement.
20. Annual accrued tax is $5,840 with a fixed 365 denominator. Closing is March 2 in a non-leap year, but now the SELLER owns closing day. The buyer pays the later bill. What is the seller-period credit to the buyer?
- $944
- $960
- $976
- $1,440
Show answer and explanation
Answer: C. $976
Seller days are January 1 through March 2 inclusive: 31 + 28 + 2 = 61. Daily tax is $16, so the seller debit and buyer credit are $976. The original buyer-owns-closing-day version had 60 days and $960; only that assignment changed.
Common questions
What is a real estate proration?
It allocates income or expense over the stated ownership or benefit period. An unpaid seller-period expense the buyer will pay later commonly produces a seller debit and buyer credit. A transferable prepaid buyer-period benefit commonly reverses that entry. Identify the payment status before choosing the direction.
How do I calculate the adjustment?
Multiply the full-period amount by the chargeable units divided by the specified full-period base. Label the period, day-count convention and closing-day assignment first. Carry precision to the requested rounding stage. This gives the stated adjustment, not every amount due at closing.
Are Illinois property taxes paid in arrears?
IDOR describes a general two-year cycle: property is assessed for one year and bills are calculated and mailed in the next. Its existing-home closing guidance describes the seller paying outstanding bills and giving a preclosing-period credit subject to the contract, while the buyer generally pays later bills. Actual estimates, allocation and any reproration provision require the contract; new construction can need separate treatment.
Who owns the day of closing for proration?
Use the question or applicable agreement. If the buyer owns March 2 in a non-leap year, the seller period ends March 1: 31 January days + 28 February days + 1 March day = 60. Assigning the seller the closing day would instead produce 61 days in that example. Do not count the same day for both parties.
Does a 360-day denominator always mean 30-day months?
No. Actual/360 uses actual calendar days; 30/360 uses its stated synthetic day-count rules. Both can have a 360 denominator. The cited Fannie Mae interest methods demonstrate this distinction, not a default for Illinois property-tax prorations. A fixed actual/365 instruction also remains distinct from an actual/actual convention using 366 in a leap year. Read both numerator and denominator instructions, including any month-end rules.
What is the Illinois state real estate transfer-tax rate in October 2026?
The operative state rate reviewed is $0.50 per $500 of taxable value or fraction, not 0.50% of price. Divide the applicable positive taxable base by 500, apply the unit ceiling and multiply by $0.50. Proposed bill text is not an enacted, effective rate change.
What county and municipal transfer taxes should I add?
The cited county authority permits a $0.25-per-$500-or-fraction layer when applicable. Add it only when the facts or applicable rule support it. Municipal charges require their own rate, base, units, exemptions and payer rules. The state-plus-that-county subtotal is not automatically the full local transfer charge.
How do I round Illinois transfer-tax units?
For the applicable $500 rule, use the next whole unit whenever a fraction remains. Taxable $300,001 gives 600.002, so use 601 units; exact $250,000 gives 500 units, not 501. PTAX-203 also instructs upward whole-dollar rounding on lines 11 through 18. Do not silently replace its filing instructions with ordinary nearest-cent rounding or apply them to every municipal tax.
Who pays transfer taxes, and does a fee always produce a matching credit?
Identify the applicable law and allocation. A contract can allocate a cost without creating an exemption or overriding statutory liability. In a stated seller-only payment to a recorder, the government receives the fee; the buyer does not automatically receive an equal credit. A between-party proration reimbursement is a different transaction.
Does every seller mortgage reduce the transfer-tax base?
No. The state exclusion concerns an outstanding mortgage to which the transferring document states the property or interest remains subject. A loan paid off from proceeds is different, as is a new buyer loan. PTAX-203 addresses the actual included consideration and specified deductions. If a problem already supplies net taxable consideration, do not take the same deduction again.
Can every prepaid insurance or service charge be prorated to the buyer?
Only an actual or stipulated transferable buyer-period benefit supports that reimbursement. The service-plan question expressly says it transfers. A seller's insurance payment alone does not prove policy assignment or an obligation for the buyer to reimburse it. Use the stated facts or actual documents.
Is a security deposit part of earned rent?
Not when it is held as refundable security and has not been applied as rent. Account for it separately. For covered Illinois residential transfers other than the specified lien-interest transfer, section 1.1 addresses deposit, statutory-interest and prepaid-rent liability of the transferee and preserves specified joint and several liability of the transferor. A settlement credit does not by itself release every tenant claim.
Does a transfer-tax exemption mean no form or stamp process?
Not necessarily. Filing qualifications depend on the exemption, and local charges need their own analysis. A no-cash transfer or quitclaim label alone does not establish tax exemption. Current PTAX-203 still shows R-10/24; its stamp wording does not reverse the statutory paper-stamp phaseout after December 31, 2025. Applicable electronic-stamp or alternative-indicia procedures remain separate from preparing a declaration.
What practice score proves readiness for these questions?
No validated readiness cutoff or pass probability is established for this original set. Explain the period, payment status, entry direction and nearest wrong answer, then solve a fresh variation after a delay. The whole Calculations category weight does not predict how many questions will test one method. These are not copied or recalled live PSI items, and no exam-tool permission is inferred.
Does Illinois require prorating taxes at 105% of the previous bill?
No universal 105% requirement is established by the cited closing guidance. Use the actual contract or the percentage expressly supplied by an exercise, along with its day method and any reproration clause. In the hypothetical example, 105% of $10,000 is $10,500, and 100/365 of that estimate is $2,876.71 after final rounding. The estimate does not guarantee the eventual bill or create an unstated reproration right.
Should I round the daily proration rate first?
Only if the question or applicable instruction requires it. When the instruction says to round only the final money amount, keep the division precise until after multiplication. For $1,000 over 100 days with a fixed 365 denominator, the allocation is $273.97; rounding the daily rate to $2.74 first would instead produce $274.00. Transfer-tax form rounding is a separate rule.
Do municipal transfer taxes always use $500 units?
Do not assume that. Check the actual local rule or use the explicit classroom instruction. In the fictional $2-per-$1,000-or-fraction exercise, $412,250 gives 413 local units and $826, while the stipulated state and county calculation uses 825 units of $500 and totals $618.75. The specified total is $1,444.75. The local rule is invented for practice, not an assertion about any Illinois municipality.
How do PTAX-203 deductions and the under-$100 exemption differ?
A deduction adjusts the applicable base; an exemption has separate legal conditions. In the simplified exercise, given full consideration of $450,000 already includes valid $10,000 personal property and a valid $100,000 existing mortgage remaining subject to the deed transfer. Subtracting those stated qualifying amounts once gives $340,000, with no other adjustment assumed. This is not permission to classify every fixture as personal property or deduct a payoff, new loan or the same amount twice. Section 31-45(e) uses actual consideration less than $100; exactly $100 does not meet that threshold alone. Other exemptions, form supplements, filing and local rules need their own facts.
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Official sources and scope
Reviewed October 28, 2026 against the identified PSI outline, Illinois statutes, IDOR form and instructions, and selected closing-disclosure guidance. Fresh readings and earlier actual readings are recorded separately. PTAX-203 still shows R-10/24 at the current official download; that is its form revision, not this guide's review date. Examples are original classroom calculations, not completed settlement statements, local tax quotes or legal decisions for a private transaction.
- PSI June 24, 2026: real property tax and other prorations
- IDOR: property-tax responsibility at closing
- IDOR: the general two-year property-tax cycle
- CFPB Regulation Z 1026.38: paired closing adjustments and rent
- Fannie Mae: actual/360 and 30/360 interest methods
- U.S. Naval Observatory: the Gregorian leap-year rule
- 765 ILCS 710/1.1: covered residential transfers and tenant balances
- 35 ILCS 200/31-10: Illinois state transfer-tax rate and base
- 55 ILCS 5/5-1031: county transfer-tax authority
- Illinois DOR: transfer-tax base and local layers
- IDOR PTAX-203 instructions, revised October 2024
- 35 ILCS 200/31-45: transfer exemptions and filing qualifications
- 35 ILCS 200/31-15: electronic stamps after paper phaseout
- CFPB Closing Disclosure explainer
- IDOR Form PTAX-203 and instructions, R-10/24
This is exam preparation, not advice for a specific transaction. State law and the applicable facts control. Our editorial and corrections process explains how to report an issue.