- Official section
- National XI.C and Illinois III.C: Transfer Fees and Taxes
- Broker weight
- A named national calculation and Illinois state-law topic
- Expected scored items
- The current outlines test prorations and transfer fees nationally and transfer taxes on the Illinois state portion
Illinois real estate math guide
Illinois transfer tax with the $500 ceiling rule
Illinois transfer-tax arithmetic has one small word that controls the whole problem: fraction. Divide taxable value into $500 units, and any leftover amount creates another unit. Ordinary rounding is wrong because $1 beyond an exact boundary triggers the next statutory unit. Write the state and county layers on separate lines so a correct unit count does not become a wrong total.
Last updated: August 1, 2026
What calculation do you need to make?
Short answer: Illinois state transfer tax equals the ceiling of taxable value divided by $500, multiplied by $0.50. Ceiling means every fraction becomes the next whole unit. When the authorized county tax applies, calculate the same units times $0.25. If both state and county layers apply, they total $0.75 per unit before a municipal layer. Calculate municipal tax separately under the stated current ordinance. Determine taxable value before counting units, including a statutory outstanding-mortgage exclusion only when the transfer document and facts satisfy Section 31-10. Exemptions, declaration requirements, payer allocation, and the separate property-tax system must not be inferred from this formula.
This guide teaches Illinois exam calculations, not a closing quote or tax opinion. Actual liability can depend on the transaction structure, statutory value definition, related transfers, beneficial or controlling interests, exemptions, mortgage language, state and local forms, property location, local ordinances, and recording practice. Current PTAX-203 instructions also direct preparers to round specified consideration lines upward before dividing net consideration by $500. Municipal rates and procedures can change. Verify the current law and closing instructions for the specific property. Sources were checked through August 1, 2026.
How do you calculate Illinois real estate transfer tax?
- Identify the taxable transfer and the property location before selecting state, county, or municipal layers.
- Determine taxable value from the stated facts, applying only a supported statutory exclusion or exemption.
- Divide taxable value by $500 and inspect the quotient for any fractional remainder.
- Round the unit count upward only when a fraction exists; leave exact whole units unchanged.
- Multiply units by $0.50 for state tax and by $0.25 when the authorized county layer is stated to apply.
- Calculate any municipal layer separately under its own supplied rate, base, rounding, exemption, and payer rule.
- Check the result by locating taxable value inside the correct $500 interval.
- Keep the amount, payer, declaration, recording, and property-tax questions completely separate throughout.
- Unknown
- Taxable $500 units
- Formula or rule
- Ceiling(taxable value / $500)
- Exam safeguard
- Round fractions up
- Unknown
- State tax
- Formula or rule
- Units x $0.50
- Exam safeguard
- Current statewide rate
- Unknown
- County tax when applicable
- Formula or rule
- Units x $0.25
- Exam safeguard
- Separate authorized layer
- Unknown
- State plus county
- Formula or rule
- Units x $0.75
- Exam safeguard
- Before municipal tax
- Unknown
- Exact multiple
- Formula or rule
- Value / $500
- Exam safeguard
- No extra unit
- Unknown
- Any remainder
- Formula or rule
- Next whole unit
- Exam safeguard
- Not nearest rounding
- Unknown
- Subject-to mortgage base
- Formula or rule
- Stated value - qualifying outstanding mortgage
- Exam safeguard
- Document condition required
- Unknown
- Municipal tax
- Formula or rule
- Use stated local formula
- Exam safeguard
- Do not assume state base
- Unknown
- Known state tax units
- Formula or rule
- State tax / $0.50
- Exam safeguard
- Produces unit count
- Unknown
- Known-unit value range
- Formula or rule
- Above prior $500 boundary through current boundary
- Exam safeguard
- Not exact value
Can you follow the calculation from facts to answer?
Calculate state tax on an exact multiple
Scenario: Taxable value is $325,000 and the question asks only for Illinois state transfer tax. What is due?
- $325,000 / $500 = 650 exact units.
- No extra unit is needed because there is no fraction.
- 650 x $0.50 = $325.
Answer: Illinois state transfer tax is $325.
Round a fractional unit upward
Scenario: Taxable value is $248,750. What is the Illinois state transfer tax?
- $248,750 / $500 = 497.5 units.
- The fraction requires 498 taxable units.
- 498 x $0.50 = $249.
Answer: Illinois state transfer tax is $249.
Catch a one-dollar boundary change
Scenario: Taxable value is $250,001. What is the state tax?
- $250,001 / $500 = 500.002 units.
- Because a fraction counts, use 501 units.
- 501 x $0.50 = $250.50.
Answer: Illinois state transfer tax is $250.50.
Combine state and county layers
Scenario: A taxable $325,000 transfer is subject to both state tax and the authorized county tax. No municipal tax applies. What is the combined amount?
- There are 650 taxable $500 units.
- State tax is 650 x $0.50 = $325; county tax is 650 x $0.25 = $162.50.
- Combined tax is $325 + $162.50 = $487.50.
Answer: Combined state and county transfer tax is $487.50.
Apply a stated subject-to mortgage exclusion
Scenario: A transfer has $400,000 stated value, and the transferring document says the real estate remains subject to a qualifying $150,000 outstanding mortgage. What state tax results under the stated facts?
- Taxable value is $400,000 - $150,000 = $250,000.
- $250,000 / $500 = 500 units.
- 500 x $0.50 = $250.
Answer: The stated Illinois state transfer tax is $250.
Interpret a known state-tax amount
Scenario: The Illinois state transfer tax is $225. What taxable-value interval does that amount identify?
- $225 / $0.50 = 450 taxable units.
- A ceiling result of 450 means taxable value is greater than $224,500 and no more than $225,000.
- The tax alone does not reveal the exact value inside that interval.
Answer: Taxable value is above $224,500 through $225,000.
Which math errors cost the most points?
- Trap
- Round $500 units to the nearest whole number.
- Correction
- The phrase or fraction requires every positive remainder to round upward.
- Trap
- Add one unit to an exact multiple.
- Correction
- Exact division already counts the final full unit; no fraction remains.
- Trap
- Multiply sale price directly by $0.50.
- Correction
- First divide taxable value into $500 units, then multiply the unit count by the rate.
- Trap
- Use $1 per $1,000 when taxable value is not an exact $1,000 multiple.
- Correction
- The statutory $500-unit ceiling can produce a different result at a fractional boundary.
- Trap
- Add county tax to every Illinois problem.
- Correction
- Calculate only the layers the question or applicable law says apply.
- Trap
- Assume every municipality uses the state formula.
- Correction
- Municipal rates, bases, exemptions, and procedures depend on current local law.
- Trap
- Deduct every seller mortgage payoff from taxable value.
- Correction
- Use the Section 31-10 subject-to exclusion only when the transfer document and facts satisfy it.
- Trap
- Treat an exempt transfer as requiring no documentation.
- Correction
- Tax exemption and declaration or recording requirements are separate questions.
- Trap
- Assume the seller always pays every transfer-tax layer.
- Correction
- Follow current law, local procedure, contract allocation, and the facts stated.
- Trap
- Use property-tax EAV to calculate transfer tax.
- Correction
- Transfer tax uses taxable transfer value; property tax uses taxable EAV and local rates.
- Trap
- Infer exact taxable value from the amount of tax.
- Correction
- Because of ceiling units, one tax amount can represent a $500 interval of values.
- Trap
- Use a proposed statutory rate as current law.
- Correction
- Confirm the enacted statute and effective date through primary sources.
Can you solve these original problems?
These questions are original study items aligned to the published outline. They are not copied, recalled, or predicted PSI questions.
1. Taxable value is $300,000. What is the Illinois state transfer tax?
- $300
- $150
- $450
- $600
Show answer and explanation
Answer: $300
$300,000 / $500 = 600 units, and 600 x $0.50 = $300.
2. Taxable value is $300,001. How many $500 units are taxed?
- 601
- 600
- 600.002
- 300
Show answer and explanation
Answer: 601
The fractional unit is rounded upward under the or-fraction rule.
3. A transfer has 800 taxable units and both state and authorized county taxes apply. What is the combined amount before municipal tax?
- $600
- $400
- $200
- $800
Show answer and explanation
Answer: $600
800 x ($0.50 + $0.25) = 800 x $0.75 = $600.
4. Which fact can support the statutory outstanding-mortgage exclusion in a stated problem?
- The transfer document says the property remains subject to the mortgage
- The seller once had a mortgage
- The buyer receives a new loan
- The broker expects a payoff fee
Show answer and explanation
Answer: The transfer document says the property remains subject to the mortgage
Section 31-10 ties the exclusion to the subject-to statement and outstanding amount at transfer.
5. Which statement correctly distinguishes transfer tax from property tax?
- Transfer tax uses taxable transfer value; property tax uses taxable EAV
- Both always use the sale price
- Both always use $500 units
- Property tax applies only when a deed records
Show answer and explanation
Answer: Transfer tax uses taxable transfer value; property tax uses taxable EAV
The taxes arise from different events and use different calculation bases.
Which numbers and formulas are easy to confuse?
- Terms
- Taxable value vs. sale price
- Difference
- Sale price is contractual consideration. Taxable value is the base produced under the governing transfer-tax definition and applicable exclusions.
- Question cue
- Contract number versus statutory base.
- Terms
- Exact unit vs. fractional unit
- Difference
- An exact $500 multiple needs no added unit. Any remainder after division triggers the next full unit.
- Question cue
- No remainder versus ceiling upward.
- Terms
- State tax vs. county tax
- Difference
- The state layer is $0.50 per taxable $500 unit. The authorized county layer is $0.25 per unit and is separate.
- Question cue
- Fifty cents versus twenty-five cents.
- Terms
- State tax vs. municipal tax
- Difference
- State tax follows Article 31 statewide. Municipal tax depends on applicable local authority and ordinance.
- Question cue
- Uniform state layer versus location-specific layer.
- Terms
- Subject-to mortgage vs. seller payoff
- Difference
- A subject-to transfer leaves the real estate subject to stated outstanding debt. A normal payoff clears the seller's lien at closing.
- Question cue
- Debt remains versus debt is released.
- Terms
- Tax exemption vs. filing exemption
- Difference
- A transaction can owe no transfer tax under an exemption while still requiring a declaration, notation, or other documentation.
- Question cue
- No tax versus no paperwork.
- Terms
- Tax liability vs. contract allocation
- Difference
- Law identifies the tax obligation. The contract can allocate transaction costs between the parties subject to applicable rules.
- Question cue
- Government claim versus party reimbursement.
- Terms
- Transfer tax vs. property tax
- Difference
- Transfer tax arises from a taxable transfer. Property tax recurs based on taxable EAV and local rates.
- Question cue
- Conveyance charge versus ownership-period tax.
- Terms
- Transfer tax vs. recording fee
- Difference
- Transfer tax is a tax measured by taxable value. A recording fee pays for accepting and recording documents under the applicable schedule.
- Question cue
- Value-based tax versus document service charge.
- Terms
- Enacted rate vs. proposed rate
- Difference
- An enacted effective statute controls current calculation. A bill can propose a change without becoming law.
- Question cue
- Current law versus legislative proposal.
What does the outline expect you to calculate?
- Topic
- Taxable transfer
- What to know
- Title transfer, deed, beneficial interest, controlling interest, real estate entity, related transactions, recording, privilege tax, and Illinois property
- Best exam move
- Confirm the problem presents a taxable transfer before calculating stamps.
- Topic
- Taxable value
- What to know
- Full actual consideration, cash, property, debt, obligation, value definition, excluded amount, transfer document, and calculation base
- Best exam move
- Build the statutory or stated taxable base before dividing into units.
- Topic
- $500 unit
- What to know
- Taxable value, divide by 500, statutory unit, exact multiple, fractional unit, ceiling, revenue stamp, and count
- Best exam move
- Divide by $500 and round every positive fraction upward.
- Topic
- State tax
- What to know
- $0.50, each $500, fraction thereof, Article 31, Property Tax Code, Illinois Department of Revenue, state revenue stamp, and multiplication
- Best exam move
- Multiply whole taxable units by $0.50 for the state layer.
- Topic
- County tax
- What to know
- $0.25, each $500, fraction thereof, county board, Counties Code, separate layer, authorized rate, and property location
- Best exam move
- Use $0.25 only when the question or applicable county rule says the county layer applies.
- Topic
- Combined state and county
- What to know
- $0.75 per $500, same unit count, separate taxes, cumulative amount, no municipal layer, state portion, county portion, and total
- Best exam move
- Calculate each layer or multiply the shared units by $0.75 when both stated rates apply.
- Topic
- Municipal transfer tax
- What to know
- Home-rule municipality, non-home-rule authority, referendum, ordinance, local rate, buyer, seller, stamps, declaration, and exemption
- Best exam move
- Use the exact local rate and rounding base supplied; do not extend the state formula by assumption.
- Topic
- Exact multiples
- What to know
- $250,000, 500 units, no remainder, whole unit, state tax, boundary, division, and check
- Best exam move
- Do not add an extra unit when taxable value divides evenly by $500.
- Topic
- Fractional units
- What to know
- $250,001, 500.002 units, ceiling, 501 units, one-dollar excess, statutory fraction, and next unit
- Best exam move
- Even a one-dollar remainder creates a full additional taxable unit.
- Topic
- Outstanding mortgage exclusion
- What to know
- Transfer subject to mortgage, transferring document, outstanding amount, statutory exclusion, assumed debt, seller payoff, taxable base, and evidence
- Best exam move
- Subtract the outstanding mortgage only when the problem states the statutory subject-to condition.
- Topic
- Seller payoff distinction
- What to know
- Existing mortgage, payoff at closing, released lien, seller proceeds, subject-to transfer, buyer assumption, taxable value, and closing ledger
- Best exam move
- Do not deduct an ordinary payoff merely because it reduces seller net.
- Topic
- Exempt transfers
- What to know
- Government transfer, security instrument, corrective deed, trust transfer, no actual consideration, statutory exemption, Section 31-45, and documentation
- Best exam move
- Use an exemption only when the facts fit the current statutory category.
- Topic
- PTAX-203 declaration
- What to know
- Real Estate Transfer Declaration, MyDec, buyer, seller, preparer, recorder, sale price, property characteristics, exemption, and filing
- Best exam move
- Keep tax amount and declaration obligation separate because zero tax does not answer every filing question.
- Topic
- Payer allocation
- What to know
- Tax liability, contract, seller debit, buyer debit, local custom, ordinance, settlement statement, negotiation, and closing instruction
- Best exam move
- Charge the party identified by the question instead of assuming custom controls.
- Topic
- Reverse unit range
- What to know
- Known tax, unit count, taxable value range, ceiling interval, maximum value, lower bound, exact amount unknown, and inference
- Best exam move
- A tax amount reveals a $500 value interval, not necessarily one exact taxable value.
- Topic
- Transfer tax versus property tax
- What to know
- Transaction tax, recurring tax, consideration, $500 units, equalized assessed value, local tax rate, ownership, and due date
- Best exam move
- Use taxable transfer value for stamps and taxable EAV for annual property tax.
- Topic
- Transfer tax versus recording fee
- What to know
- Tax, recorder charge, document fee, page fee, revenue stamp, declaration, government charge, and closing cost
- Best exam move
- Do not add a recording fee to transfer tax unless the question asks for total government charges.
- Topic
- Current-law check
- What to know
- Enacted statute, proposed bill, effective date, August 1 2026, IDOR guidance, county ordinance, municipal ordinance, and source hierarchy
- Best exam move
- Use enacted current law, not a proposal, stale article, or rate from another location.
How should you drill this calculation?
- Session
- Session 1
- Focus
- Count $500 units
- Proof you are ready
- Convert 30 exact and fractional taxable values into units, explaining every ceiling decision.
- Session
- Session 2
- Focus
- Calculate state and county layers
- Proof you are ready
- Solve 20 state-only, county-only, and combined calculations with the layers shown separately.
- Session
- Session 3
- Focus
- Build taxable value
- Proof you are ready
- Resolve 20 consideration, subject-to mortgage, payoff, and exemption scenarios without inventing exclusions.
- Session
- Session 4
- Focus
- Separate local taxes
- Proof you are ready
- Classify 20 state, county, municipal, recording-fee, and property-tax facts by governing formula.
- Session
- Session 5
- Focus
- Reverse the tax
- Proof you are ready
- Convert 15 tax amounts to taxable units and state the correct value interval rather than an unsupported exact value.
- Session
- Session 6
- Focus
- Complete a mixed transfer-tax set
- Proof you are ready
- Score at least 90% and justify each taxable base, unit ceiling, rate layer, exemption, payer, and filing boundary.
Do not count recognition as mastery. Close the notes and explain the rule, apply it to a new fact pattern, and identify why each distractor fails.
Build speed without skipping the setup
From concept to decision
Drill this topic, then review the explanation
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Questions students ask about Illinois Real Estate Transfer Tax Calculator and Examples
What is the Illinois state real estate transfer tax rate in 2026?
As of August 1, 2026, 35 ILCS 200/31-10 imposes the state tax at $0.50 for each $500 of taxable value or fraction of $500. On an exact $1,000 multiple, that is equivalent to $1 per $1,000, but the statutory $500-unit formula controls fractional units.
How do you calculate Illinois transfer tax?
Determine taxable value, divide by $500, round the number of units up to the next whole unit, and multiply by $0.50 for state tax. A taxable value of $248,750 creates 497.5 units, which rounds up to 498. State tax is 498 times $0.50, or $249.
Do you round Illinois transfer tax to the nearest $500?
No. The statute taxes each $500 or fraction of $500, so any positive fractional unit counts as one full unit. Use a ceiling, not ordinary rounding. A $250,001 taxable value needs 501 units, not 500.
What is the Illinois county transfer tax rate?
The Counties Code authorizes a county tax of $0.25 per $500 of value or fraction, subject to the statute. It is a separate layer from the $0.50 state tax. If a problem says both apply, the combined stated rate is $0.75 per $500 before any municipal tax.
Do Illinois municipalities charge transfer tax?
Some do under applicable local authority, and the rates, exemptions, payment process, and party responsible can vary. Never invent a municipal rate from the statewide rate. Use the location and local ordinance stated in the question or verify current local requirements for an actual closing.
Can an outstanding mortgage reduce taxable value?
Section 31-10 provides an exclusion when the transferring document states that the real estate remains subject to a mortgage and for the amount outstanding at transfer. Apply that exclusion only when the problem supplies facts satisfying the statutory condition. A normal seller payoff is not automatically the same fact.
Who pays Illinois transfer tax, the buyer or seller?
Tax liability, local requirements, and the parties' contractual allocation are separate questions. A simplified exam problem may assign the charge to one party. For an actual transaction, review the statute, local rules, contract, and settlement documents rather than relying on custom alone.
Is transfer tax the same as Illinois property tax?
No. Transfer tax is triggered by a taxable transfer and uses taxable value in $500 units. Property tax is recurring and is calculated from taxable equalized assessed value and applicable local taxing-district rates. The two formulas are unrelated.
Does a transfer-tax exemption eliminate every filing requirement?
Not necessarily. The Illinois Property Tax Code lists exempt transactions, but an exemption from tax does not automatically answer whether a PTAX-203 declaration, exemption notation, recording document, or local filing is required. Follow current IDOR, recorder, statute, and local instructions.
Are these official Illinois broker exam questions?
No. They are original practice calculations aligned to the PSI Illinois broker outline effective June 24, 2026. Current Illinois statutes and Illinois Department of Revenue transfer-declaration guidance were checked through August 1, 2026.
Primary sources
- PSI Illinois Candidate Information Booklet dated June 24, 2026
- 35 ILCS 200 Article 31, current Illinois Real Estate Transfer Tax Law
- 35 ILCS 200/31-10, current Illinois state transfer-tax rate and mortgage exclusion
- 35 ILCS 200/31-5, current transfer-tax definitions
- 35 ILCS 200/31-45, current Illinois transfer-tax exemptions
- 55 ILCS 5/5-1031, current authorized county real estate transfer tax
- 65 ILCS 5/8-3-19, current home-rule municipal transfer-tax authority
- Illinois Department of Revenue, current PTAX-203 instructions
- Illinois Department of Revenue, current property transfer declarations and MyDec guidance
The current official outline controls the tested scope. Statutes, regulations, and official agency materials control when a general study rule and a jurisdiction-specific rule differ.
Editorial status
Checked against primary sources
The Pass Illinois editorial team last checked this guide on August 1, 2026. Every practice question is an original study item, and the source links above let you verify the rules that support the lesson.