Ohio property tax proration splits the annual tax bill between seller and buyer based on how many days each owned the home, with the seller crediting the buyer at closing for the days the seller owned the property but hasn’t yet been billed for. Because Ohio bills taxes in arrears, that credit is almost always owed from seller to buyer. The size of it depends on which proration method your purchase contract uses.
Why Ohio Sellers Owe the Buyer a Credit
Ohio bills you for last year, not the current one. A tax bill you receive in 2026 covers tax year 2025.1Cuyahoga County Treasurer. Tax Collection Calendar Counties collect in two installments, and each installment covers six months of the prior tax year.2Butler County Treasurer. Real Estate Tax That means on any given closing date, the seller has lived in the home for months of tax liability that haven’t been billed yet. Without a proration credit, the buyer would receive the eventual bill and pay for that time out of pocket.
The state’s lien for property taxes attaches on January 1 each year and stays until the taxes are paid.3Ohio Legislative Service Commission. Ohio Revised Code 323.11 – Lien for Taxes Attaches and Continues Until Paid That January 1 date is the reference point long proration uses to reach back into the arrears.
Short Proration vs. Long Proration
Ohio purchase contracts specify one of two methods. The difference can be thousands of dollars.
Short Proration
Short proration covers only the current pending half-year period through closing. Close in the first half of 2026, and the seller is charged from January 1, 2026 through the closing date. Close in the second half, and the starting point is July 1, 2026. Six months of arrears get ignored, so the buyer effectively absorbs a half-year of taxes that accumulated while the seller owned the home. Short proration is treated as the local standard in some Ohio markets, including the Dayton area.
Long Proration
Long proration reaches back to the start of the previous half-year billing cycle. For a first-half 2026 closing, the period begins July 1, 2025 and runs through the closing date. For a second-half closing, it begins January 1, 2026. Because long proration captures the full unbilled arrears, the seller’s credit is much larger. Most of Ohio treats this as the true proration of taxes owed.
The method is a negotiable contract term, not a legal default. If your purchase agreement doesn’t specify, ask before closing.
What You Need Before You Calculate
- The annual tax amount from your county auditor’s property database. Use the full annual figure, not a single installment.4Mahoning County Auditor. Mahoning County Auditor
- The closing date. Every day counts.
- The last installment paid, from the county treasurer’s records. This confirms where the proration period starts.
- Any special assessments on the bill. Sewer, street lighting, sidewalks, and ditch maintenance are separate line items and may be prorated differently depending on your contract.5Fairfield County Auditor. Auditor Special Assessments
If any prior taxes are delinquent at closing, the seller has to credit those in full on top of the proration. The title company flags them in the title search, and the amounts come out of the seller’s proceeds.
The Daily Tax Rate
Divide the annual tax by 365 to get a per-day rate.6Lake County Treasurer. Property Tax Prorations A $3,650 annual bill works out to exactly $10.00 per day. In a leap year, divide by 366. Carry the decimal out to at least six places; rounding early can create a discrepancy of several dollars over a long proration period, and title companies will catch it.
Worked Examples
Take a home with a $7,300 annual tax bill closing on June 1, 2026. The daily rate is $7,300 ÷ 365 = $20.00.
Short Proration
January 1, 2026 through June 1, 2026 is 152 days. 152 × $20.00 = $3,040. The seller credits the buyer $3,040 at closing. The buyer covers the remaining 213 days of 2026 ($4,260) when that bill comes due.
Note what this leaves uncovered: the buyer will also pay the second-half 2025 bill when it arrives, even though the seller owned the property that entire period. That gap is the built-in cost of agreeing to short proration.
Long Proration
Same closing, but the period reaches back to July 1, 2025. July 1, 2025 through June 1, 2026 is 336 days. 336 × $20.00 = $6,720. That’s $3,680 more than the short-proration credit on the same transaction.
The buyer still pays the tax bills in full when they arrive; the larger closing credit reimburses them for the seller’s share of the arrears.
How the Credit Shows Up at Closing
The proration is a credit to the buyer and a debit to the seller on the Closing Disclosure or settlement statement.7American Land Title Association. ALTA Settlement Statements The seller doesn’t write a separate check. The credit reduces the buyer’s cash to close and shrinks the seller’s net proceeds by the same amount. The title company runs the math against the county records and the purchase contract before signing.
The seller does not pay the county at closing. When the tax bill lands months later, the buyer pays the county in full and applies the credit received at closing to cover the seller’s share.
When the Estimate Misses
Proration relies on the most recent tax bill, and that bill can go stale. Ohio reappraises property values every six years and updates them at the three-year midpoint.8Ohio Department of Taxation. Property Value Reappraisal and Update Schedule A closing in a reappraisal year can be followed by a noticeably different bill. Millage-rate changes do the same thing.
Most standard Ohio contracts treat the proration as final once the deed records. No one reconciles later if the actual bill runs higher or lower. Some buyer’s agents negotiate language calculating the proration at 105% or 110% of the current bill to build in a cushion, particularly when the sale price runs well above the auditor’s current valuation and a reassessment is likely. That language has to be in the purchase agreement, not raised at the closing table.
CAUV Land: A Separate Charge to Watch For
If the property is farmland enrolled in Ohio’s Current Agricultural Use Value program, converting it to non-agricultural use triggers a recoupment of the tax savings from the three tax years before the conversion.9Ohio Legislative Service Commission. Ohio Revised Code 5713.34 – Portion of Tax Savings on Converted Lands May Be Recouped The recoupment becomes a lien on the property, and the current owner pays it, not the seller who benefited from the reduced valuation. On larger parcels the number can reach five figures. If you’re buying CAUV land and don’t plan to farm it, your purchase agreement should assign this cost explicitly; a seller credit at closing is the cleanest fix.
Special Assessments
Special assessments for sewer, paving, curbs, sidewalks, and drainage appear on the tax bill but aren’t part of the ad valorem tax.5Fairfield County Auditor. Auditor Special Assessments Some contracts prorate the whole bill; others prorate only the tax portion and leave assessments to the buyer going forward. Read the line items before running the math. A $4,000 annual bill with $600 in assessments should be prorated on $3,400 if your contract excludes assessments. Getting this wrong changes the credit and creates a dispute at the closing table.