How Property Taxes Are Prorated at Closing (Simple Guide)

TL;DR: Property tax proration means the seller pays for the days they owned the home during the tax year, and the buyer pays for the rest, calculated down to the day of closing. Most states bill property taxes in arrears, so the seller usually gives the buyer a credit at closing to cover taxes owed for time the seller lived there. The exact math shows up on your Closing Disclosure under "prorations" — always check that line before you sign.

_Last reviewed: August 2026 · 7 min read_

If you've ever looked at a closing statement and wondered why there's a random credit or charge labeled "tax proration," you're not alone. It looks like a mystery line item, but it's really just splitting one bill fairly between two owners. Here's how the math works and what to check before you sign anything.

Okoniq Property Hub keeps a record of your closing documents and tax dates in one place, so you're not digging through old PDFs when the next tax bill or reassessment notice shows up.

What does "prorated" mean for property taxes at closing?

Proration means dividing an annual cost between two parties based on how many days each one owned the property. Property taxes are billed once or twice a year, but ownership can change hands on any day of that period. If a home sells on June 15 and the tax year runs January 1 to December 31, the seller owes for the 165 days they owned it and the buyer owes for the remaining 200 days (in a 365-day year).

That split doesn't happen automatically with the tax collector. Instead, it's handled between buyer and seller as part of the closing paperwork, usually as a credit or debit on the settlement statement. Nobody sends a second check to the county — the money just moves between the two parties at the closing table.

How do buyers and sellers split the tax bill?

The split is calculated using the most recent tax bill, divided by 365 (or 366 in a leap year), then multiplied by each party's number of ownership days. For example, on a $4,380 annual tax bill, the daily rate is $12. If the seller owned the home for 165 days before closing, they owe $1,980 for their share. That amount typically shows up as a credit to the buyer, since in most states the buyer will be the one who eventually pays the full bill when it comes due.

This is one of the reasons a home's paperwork trail matters even after you move in — similar to why 5 signs your brick needs repointing now matters for catching costs early, catching tax proration errors early saves you from an argument months later when the real bill arrives and doesn't match what you expected.

What's the difference between arrears and advance tax states?

Arrears states bill for the previous period, so at closing the seller almost always owes the buyer money for taxes not yet paid. Advance states bill for the upcoming period, so the seller has often already paid taxes covering time after the sale, meaning the buyer owes the seller a reimbursement instead.

| Arrears States (e.g. Illinois, Michigan) | Advance States (e.g. Texas parts, some Southern states) | |---|---| | Tax bill covers the past period | Tax bill covers the upcoming period | | Seller usually owes buyer a credit | Buyer usually owes seller a reimbursement | | Bill often not due for months | Bill may already be paid in full | | Common in Midwest and Northeast | Varies by county even within a state |

Because rules vary by county, not just by state, it's worth asking your title company directly which method applies to your closing rather than assuming based on where a friend or relative bought a house.

How is the daily tax rate calculated?

The daily rate comes from taking the last known annual tax bill and dividing it by the number of days in the tax year — 365 in most years, 366 in leap years. Some title companies use a 360-day "banker's year" instead, which changes the daily rate slightly. On a $6,000 tax bill, a 365-day calculation gives $16.44 per day, while a 360-day calculation gives $16.67 per day — a small difference, but one that can add up to $30-$50 depending on how many days are being prorated.

If your area is due for a reassessment soon, the number used at closing may not match what you actually owe later. This is similar to catching problems early elsewhere in the home, the way 5 foundation checks you're forgetting every spring catches issues before they turn into bigger repairs — a quick double-check of your tax proration line can prevent a surprise bill down the road.

What else should you check before closing on an older home?

Tax proration isn't the only line item worth a second look when buying an older property. Sellers sometimes disclose known issues, but it's smart to verify things independently — checking the electrical panel capacity is a good example, similar to how 100 vs 200 amp service affects whether a home can support modern appliances, or confirming there's no outdated wiring like what's covered in 5 signs you still have knob-and-tube wiring. None of these show up on a tax proration line, but they affect your total cost of ownership just as much as the tax split does.

FAQ

Who pays property taxes the month of closing?

Whoever owns the home on the closing date owes taxes only for the days of the month they actually held title, split down to the exact day using the annual tax bill divided by 365.

Is tax proration the same in every state?

No. Some states bill in arrears and credit the buyer at closing, while others bill in advance and the buyer reimburses the seller instead — the county tax office can confirm which method applies locally.

What if the tax bill changes after closing?

Proration is based on the most recent known bill, so if the county reassesses the home and the new bill is higher or lower, that difference is absorbed by whoever owns the home when the new bill is due, not adjusted retroactively between buyer and seller.

Where do I see the proration on my closing paperwork?

It appears on the Closing Disclosure, usually listed as a credit or debit labeled "county taxes" or "property tax proration," with the date range and daily rate shown next to it.

Does a 360-day or 365-day calculation matter much?

The difference is usually small, often $20 to $50 on an average tax bill, but it's worth confirming which method your title company used if the numbers look off from your own math.

This is educational information, not tax or legal advice. Consult your title company, closing attorney, or a CPA about how proration applies to your specific closing and state.