Deducting property tax on federal returns

Use the correct year’s SALT limit

For tax year 2026, the IRS correction to Form 1040-ES states a combined state and local tax deduction limit of $40,400, or $20,200 for married filing separately. It is a combined limit, not a separate allowance for each property. Official source.

For 2026, the limit is reduced when modified adjusted gross income exceeds $505,000, or $252,500 for married filing separately. The reduced limit does not go below $10,000, or $5,000 for married filing separately. Official source.

For tax year 2025, the Schedule A instructions instead use a $40,000 limit, or $20,000 for married filing separately, with income-based reduction starting above $500,000 or $250,000 respectively. Use the worksheet for the applicable tax year. Official source.

Do not copy an old $10,000 headline or a 2025 worksheet into a 2026 estimate. Bring your filing status and the requested income information to the calculation. If income is close to a threshold, ask your preparer to apply the current worksheet rather than assuming the published maximum is your allowed deduction. A cap describes a limit; it is not a promise that you paid or can deduct that amount.

Identify the taxes and the payment year

The IRS describes qualifying personal taxes as an itemized deduction subject to limitations, generally in the year paid. Its deductible categories include state and local real property taxes and income taxes or, by election, general sales taxes instead of state and local income taxes. Official source.

Create a list of actual payments with date, payee, tax category and receipt. Separate a bill’s tax year from the date you paid it. Ask your preparer to compare the applicable itemized deduction treatment with the standard deduction for your circumstances. Gather other state and local tax records together so the combined limitation can be applied. Do not prepare one isolated property-tax deduction and then overlook other amounts using the same limit. Keep any state-return question separate; this guide concerns the federal return.

Reconcile escrow and direct payments

For real estate taxes paid through escrow, the IRS looks to the amount the lender actually paid to the taxing authority. Total deposits into escrow are not the same as tax disbursements. Official source.

Use the servicer’s disbursement history and the county account to identify the payment. For direct payments, keep the receipt and bank or card record together. Avoid counting the same tax once as a deposit and again as a disbursement. Flag refunds, rebates and corrected payments for the preparer rather than silently netting unrelated years together. If the account shows an unapplied payment or reversal, resolve its status before using it in your year-end total. For a payment around year end, preserve the submission and posting records and ask which tax-year treatment applies.

Review charges included on the bill

The IRS distinguishes itemized charges for services to a particular property or person from deductible real property tax. A charge is not automatically a deductible property tax just because it appears on the same bill. Official source.

The IRS generally excludes taxes for local improvements that increase property value from a current deduction. Its guidance treats qualifying maintenance, repair or interest components differently when the deductible portion can be established. Official source.

Request a breakdown of unfamiliar charges and retain the explanation. Mark service charges, improvement assessments, penalties and fees for separate review. Do not assume the entire checkout total has the same tax treatment as the underlying real estate tax. If the bill combines several charges, give your preparer the full bill rather than only a payment total. Ask how to preserve any amount that belongs in a property basis record instead of the current deduction worksheet.

Prepare a usable handoff to your return preparer

Create one packet with the tax year clearly labeled, itemized bills, paid receipts, escrow history and any refund notices. For a purchase or sale, add the closing statement and ask the preparer to review allocations. For mixed personal and rental use, supply an accurate use timeline and ownership information; do not place the whole payment into a personal deduction without review. Include a short list of unresolved items, such as a disputed payment date or an unexplained assessment charge.

Before filing, compare the final worksheet against your records and check that each payment appears only once. Save the version of the IRS instructions used for any material limitation question. For next year’s budget, keep expected federal savings separate from the amount you must pay the county. Plan to fund the actual installment even while the return calculation is being resolved.

Common questions

Use this guide for your property

• Illinois county directory
• Cook County bills and official links
• Property tax estimate tool
• Rental property tax records

Browse every state or check the national calendar. County pages distinguish announced dates from statutory rules; missing information is labeled.

Sources and verification