Last updated 2026-07-11
TL;DR
When a buyer demands a property tax appeal before closing, you have three real options: file the appeal yourself, negotiate a closing credit in lieu of filing, or agree to a post-closing appeal with split savings. Most sellers choose the credit. Filing yourself is only worth it if the deadline is near and the potential savings are large. You rarely have to do either.
Why is a buyer asking me to appeal property taxes before closing?
Buyers ask because they've done the math and your assessed value looks high next to what they're paying. If the assessment stays, they're locked into inflated tax bills for years. They also know that in most states, once the deed transfers, the appeal deadline tied to the current cycle either passes or the new owner inherits the fight. So they push the seller to act now.
The request shows up most often in three situations. You're selling mid-year and a reassessment just happened that the buyer spotted. The purchase price sits well below the assessed value, which hands the buyer hard evidence an appeal would succeed. Or the buyer's agent is experienced and uses this as a negotiating tool.
It's not unreasonable. It's also not a standard obligation. Nothing in a typical real estate purchase agreement requires a seller to file a tax appeal. The buyer is asking for something extra, and that means there's room to negotiate.
Does the seller have any legal obligation to appeal?
No. There is no state in the U.S. where a seller is legally required to file a property tax appeal as a condition of selling. Your obligation is to disclose known tax information accurately and to pay taxes through your closing date, typically prorated at settlement [1].
What creates apparent obligation is contract language, not statute. If a buyer's agent slipped language into the purchase agreement saying the seller will "take reasonable steps to reduce the assessed value" or something similar, and you signed it, you may have a contractual duty to at least try. Read your purchase agreement carefully. If you didn't sign anything requiring an appeal, you're free to decline and counter with a credit instead.
Some jurisdictions have rules about who can file mid-transaction. In California, only the assessed owner of record on the lien date (January 1) has standing to file an assessment appeal for that tax year [2]. If you're still the owner of record when the appeal deadline hits, you can file. Once title transfers, the new owner takes on that right. This is exactly why buyers push sellers to act before closing.
What are the real options when a buyer makes this request?
You have four paths, and each carries a different risk.
Option 1: File the appeal yourself before closing. You remain the owner, so you have standing. You hire an appraiser or use comparable sales data to support a lower value, file before the local deadline, and the case proceeds. If it settles before closing, the savings are real and you can credit the buyer at closing. If it doesn't settle in time, the appeal either transfers with the property or gets complicated depending on state law. The risk: appeals routinely take 6 to 18 months [3], so filing does not mean resolving.
Option 2: Offer a closing credit instead. This is what most sellers do. You estimate the annual tax savings a successful appeal might produce, then credit the buyer a lump sum at closing. It's clean and skips the hassle of an actual appeal. The buyer is made whole (at least approximately) and you move on. The only thing left to argue is the number.
Option 3: Agree to a post-closing appeal with split savings. The buyer files after they own the property, and you agree in writing to share the refund or savings if the appeal succeeds. This needs careful contract drafting. The buyer bears the cost and effort; you share the upside from your ownership period. Legally possible, administratively annoying for both sides.
Option 4: Decline and let the buyer walk or renegotiate. If the property is priced right and the market is competitive, you can say no. The buyer may accept it, counter with a price reduction, or walk. Knowing your negotiating position matters here.
How do you calculate a fair closing credit instead of filing?
The credit negotiation comes down to one thing: what would a successful appeal likely save, and for how long does the buyer benefit?
Start with the assessed value and the purchase price. If you're selling for $380,000 and the assessed value is $450,000, there's a $70,000 gap the buyer can potentially argue. Apply your local tax rate to estimate the annual savings. At a combined rate of 1.2%, a $70,000 reduction would save $840 per year.
Buyers typically ask for 1 to 3 years of projected savings as a credit, sometimes more. A reasonable landing zone is one year of potential savings, since appeals aren't guaranteed and values reassess periodically anyway. On the $840 example, an $840 credit is defensible. A $2,500 credit is aggressive but might be where a buyer opens.
You can also look at what pursuing the appeal would actually cost. If the buyer hired a contingency firm, they'd pay 30% to 50% of the first year's savings as a fee [4]. That's useful context: your credit is replacing work that would itself cost the buyer money to hire out.
Remember that the credit reduces your net proceeds. Run the math on whether it's cheaper to credit or to negotiate a lower purchase price instead. Sometimes they're the same thing wearing different clothes.
What happens to a pending tax appeal when a property closes?
This varies by state, and you need to know your jurisdiction's rule before you commit to anything.
In many states, a tax appeal filed by the seller can be assigned or transferred to the buyer at closing. You include language in the purchase agreement that transfers the appeal and any resulting refund to the buyer. Both parties sign an authorization and notify the assessment board or board of equalization. The buyer handles the rest.
In other states, the appeal is tied to the individual filer and cannot transfer. If you file and then close before the hearing, the case may be dismissed, or you may have to stay involved as the appellant even after you no longer own the property. That's a mess most sellers don't want.
New York allows the buyer to continue a seller-filed appeal after a transfer if the parties agree and the Tax Commission is notified [5]. Illinois has similar provisions for transfer of appeal rights. California's process is more rigid: the applicant must have standing as the owner or assessee, and mid-appeal transfers get complicated fast [2].
Ask a local real estate attorney, more than a real estate agent, what the rule is in your county before you file anything. A 30-minute consultation is worth it.
Should you file the appeal yourself or hire someone?
If you decide to file, you have two choices: do it yourself or hire a firm.
A contingency firm means you pay nothing upfront, but you give away 30% to 50% of the savings if they win [4]. On a modest appeal, that can wipe out most of what you'd credit the buyer. You'd be paying for a service that shrinks the value of the very outcome the buyer wants.
Doing it yourself is genuinely feasible for most residential properties. The appeal form is a public document. The evidence you need, comparable sales, is available through your county assessor's website or a free pull from Zillow or Redfin. The argument is almost always the same: your property is assessed above its fair market value, and here are sales that prove it.
If you want a structured approach, a DIY appeal kit gives you the forms, comparables methodology, and hearing prep in one place. TaxFightBack's appeal kit is built for exactly this situation, and you keep 100% of any savings rather than splitting them with a contingency firm.
The honest caveat: if the appeal is complicated (commercial property, income approach valuation disputes, exemption issues), a professional is worth the fee. Simple residential appeals with clear comparable sales are DIY-friendly.
What appeal deadlines do you need to know before agreeing to anything?
Deadlines are the most underestimated part of this conversation. If the appeal window has already closed for the current tax year, neither you nor the buyer can file until next year's assessment cycle opens. That takes the pressure off immediately.
Here's a rough look at appeal deadlines in major states, because they vary dramatically [6][7]:
| State | Typical appeal deadline | Deadline triggered by |
|---|---|---|
| California | 60 days from assessment notice OR September 15/November 30 filing windows | Annual assessment notice or lien date |
| Texas | May 15 or 30 days after notice, whichever is later | Annual assessment notice [7] |
| New York (NYC) | March 1 (Class 1) or March 15 (others), annually | Tax roll filing |
| Illinois (Cook County) | Varies by township, typically 30 days from publication | Township reassessment schedule |
| Florida | 25 days from TRIM notice (typically August-September) | TRIM notice mailing |
| Georgia | 45 days from assessment notice | Annual notice |
| Pennsylvania | August 1 in most counties (varies) | Annual tax roll |
If you're weeks from closing and the deadline is two months out, filing is realistic. If you're closing in 10 days and the deadline passed in March, there's nothing to file. Tell the buyer that clearly, in writing.
For specific deadlines in your county, go straight to your county assessor's website. If you're in a high-stakes market like Los Angeles or Cook County, deadlines are enforced to the day, and missing one ends your option for the year.
How should you respond to the buyer's request in writing?
Don't respond verbally. Put everything in writing through your agents or attorneys. Here's what a reasonable written response looks like in practice.
First, acknowledge the request and state your position clearly: you understand the buyer's concern about the assessed value and you're willing to discuss it, but you are not obligated to file a tax appeal as a condition of sale.
Second, make a counter-proposal. If you're willing to offer a credit, state the amount and how you calculated it. Attach comparable sales data if you have it. This shows you've done the math and aren't pulling a number out of nowhere.
Third, if you're willing to file the appeal, attach conditions: the closing date must be flexible enough to allow a hearing or settlement, or the buyer must agree to accept a transfer of the appeal at closing with no further obligation on your part.
Fourth, set a deadline for their response. That keeps the request from dragging out and holding up the transaction.
Keep the tone cooperative. The buyer isn't being unreasonable by asking; they're trying to protect their financial interest. You're protecting yours. Both things are true.
Can the buyer file their own appeal after closing?
Yes, in most states, as long as the appeal deadline for that tax year hasn't passed and they're the new owner of record. In some states, the buyer can even file for a prior year's assessment if they can show they were harmed by an overassessment during the period they owned the property.
This is your best argument for doing nothing before closing: once the buyer owns the property, they have every right to file their own appeal, and they can do it themselves for little to no upfront cost.
The buyer's counterargument is that the current year's assessment and tax bill are already set, and if the appeal window closes before they take ownership, they've lost their shot. That's fair. Check the deadline. If the window stays open 60 or more days past your scheduled closing date, the buyer can file themselves and you have no problem to solve.
Texas is a good example where this often works out. The appeal deadline is May 15 or 30 days after the notice, whichever is later, and spring closings frequently leave enough time for the buyer to file after taking title [7].
For buyers in high-cost markets like Santa Clara or New York City, the stakes are high enough that they may push hard regardless. Know your deadline before you concede anything.
What do real estate attorneys and agents typically recommend?
The consensus among real estate attorneys who handle this regularly: negotiate a credit, close on time, move on.
Filing an appeal introduces uncertainty most sellers don't want. Hearings get postponed. Settlement talks drag. A buyer promised an appeal resolution before closing gets nervous when a hearing is rescheduled twice. That nervousness can kill a deal.
A credit removes the uncertainty. You agree on a number, put it in the settlement statement, and it's done. The buyer assumes all future appeal risk and reward.
The National Association of Realtors doesn't publish a specific policy on this, but state-level guidance from real estate commissions generally treats tax appeal requests as a negotiable term like any other, not a mandatory disclosure or obligation [8].
One thing agents often miss: if the purchase price is already below the assessed value, that purchase price itself is the strongest evidence for a successful appeal. The buyer may be able to file immediately after closing, present the closing disclosure as evidence of fair market value, and win quickly. That makes the pre-closing appeal request less urgent than it looks.
What if the appeal could save thousands and the deadline is imminent?
This is the one scenario where filing before closing might genuinely make sense. If your assessment is $200,000 over your sale price, the local tax rate is 1.5%, and the appeal deadline is three weeks away, you're looking at $3,000 per year in potential savings. That's real money worth fighting for.
In that case, file the appeal now. Use the purchase price as your primary evidence of market value. Courts and assessment boards across the country treat arm's-length sale prices as strong evidence of fair market value, and several jurisdictions weight recent sale prices heavily in appeal decisions [9].
Then attach conditions to the purchase agreement that protect you: the closing credit (or the split) gets calculated once the appeal resolves, or the buyer accepts a transfer of the appeal at closing and handles the hearing themselves.
If you go this route and want to file without paying a contingency firm, the process is manageable. Pull three to five comparable sales from your county assessor's public records or your MLS, calculate the median price per square foot, and show that your assessment per square foot runs materially higher. That's the core of most residential appeals.
Sellers in counties like Bexar, Gwinnett, or Montgomery face these situations regularly. County assessor websites in each jurisdiction post the appeal forms and deadline calendars. Use them directly rather than relying on secondhand information from your agent.
TaxFightBack's appeal kit walks through this comps-based process step by step, with forms you can adapt for your state.
How does the appeal affect your tax proration at closing?
Tax proration at closing is almost always based on the current assessed value and the current tax rate, even if an appeal is pending. The title company or closing attorney uses what's on the books [1].
If an appeal is pending and later succeeds, who gets the refund? That depends on what your purchase agreement says. If it's silent, the refund typically goes to whoever the assessor has on file as the owner for the tax year in question, which varies by state. This ambiguity is exactly why you should spell out the refund allocation in your purchase agreement before closing.
A clean clause looks something like this: "Any refund resulting from a property tax appeal for tax year [YEAR] shall be allocated between Seller and Buyer prorated as of the closing date." Have a local real estate attorney draft or review that language. It's a paragraph, not a contract overhaul.
For a complex proration situation, especially in states like New York or Illinois where tax bills cover different fiscal periods than the calendar year, get professional help. The proration math in Cook County trips up a lot of closing agents because the tax bill is paid in arrears on a different schedule than most of the country.
Frequently asked questions
Am I required to appeal property taxes before selling my home?
No. No state requires a seller to file a property tax appeal as a condition of sale. This is a negotiable request from the buyer, not a legal obligation. You can decline, counter with a closing credit, or agree to file, but none of those is mandatory unless you've signed contract language that specifically requires it.
What is a reasonable closing credit to offer instead of filing an appeal?
One year of projected tax savings is a reasonable starting point. Calculate the potential reduction (assessed value minus likely reduced value) times your local tax rate. On a $70,000 assessment gap at a 1.2% rate, that's $840. Buyers may ask for more; sellers often settle around one to two years of savings. The credit is negotiable like any other term.
Who gets the tax refund if an appeal is pending when the property closes?
It depends entirely on your purchase agreement. If it's silent, the refund goes to whoever the taxing authority recognizes as responsible for that tax year, which varies by state. Always put an explicit allocation clause in the contract before closing. A prorated split based on the closing date is the most common fair outcome.
Can a tax appeal transfer to the buyer at closing?
In many states, yes. New York and Illinois allow appeal rights to transfer if both parties agree and the assessment board is notified. California is more restrictive. Check your state's rules with a local real estate attorney before filing, because a non-transferable appeal filed by the seller can become an expensive loose end after the deed transfers.
How long does a property tax appeal take?
Most residential appeals take 6 to 18 months from filing to resolution, though informal settlements can happen in 60 to 90 days in some counties. Formal hearings in backlogged jurisdictions like Cook County or New York can take 2 to 3 years. Don't promise a buyer that an appeal will resolve before closing unless you have a very short, specific timeline confirmed by the assessor's office.
What if the appeal deadline passes before we close?
If the deadline for the current tax year has passed, there's nothing to file for that year. Tell the buyer in writing, and explain that they can file their own appeal when next year's assessment cycle opens after they take ownership. This is a legitimate reason to decline the request, and no reasonable buyer can argue otherwise.
Can the buyer file their own appeal after closing?
Yes, in most states, as long as the appeal deadline for the current year hasn't passed when they become the owner of record. In Texas, for example, the deadline is May 15 or 30 days after notice, giving spring buyers real time to file after closing. Check the specific deadline in your county before conceding that only you can file.
Is the purchase price useful evidence in a tax appeal?
Yes, and it's often the strongest evidence available. An arm's-length sale price is widely accepted by assessment boards as evidence of fair market value. If your sale price is significantly below the assessed value, the closing disclosure or HUD-1 from your sale is exactly the document a buyer needs to file a successful appeal after they take title.
Should I hire a contingency firm or file the appeal myself?
For a standard residential appeal with clear comparable sales, DIY is realistic and keeps 100% of any savings. Contingency firms charge 30% to 50% of the first year's savings if they win, which can reduce or eliminate the buyer's benefit. Hire a professional only if the property is complex: commercial, income-producing, or involves unusual valuation arguments.
What should the purchase agreement say about a tax appeal?
At minimum, the agreement should specify who bears the cost of the appeal, how any refund is split (usually prorated by closing date), what happens to the appeal if closing occurs before a hearing, and whether the appeal rights transfer to the buyer at closing. A local real estate attorney should draft or review this language before both parties sign.
Does filing an appeal affect my closing date?
Filing alone won't delay closing. Waiting for a hearing or settlement might, if you've agreed to resolve the appeal before closing. To avoid that, either close on the original schedule and transfer the appeal, or offer a credit and close without tying the timeline to the appeal outcome. Linking closing to appeal resolution is the riskiest structure for sellers.
What if the buyer's agent put appeal language in the purchase agreement I already signed?
Read the exact language carefully. 'Seller shall take reasonable steps' is vague and arguably satisfied by filing the appeal form even if it doesn't resolve. 'Seller shall obtain a reduction of at least X dollars' is much more binding. If the language is ambiguous, have a real estate attorney review it before your closing date, because breaching a contract term over a tax appeal is not worth it.
How is the tax appeal credit handled on the closing disclosure?
A closing credit for a tax appeal is typically listed as a seller credit on the Closing Disclosure under Section L (seller credits) or as a negotiated adjustment to the purchase price. It reduces your net proceeds at closing. The title company handles the accounting. Make sure the credit is clearly labeled in the purchase agreement so there's no ambiguity about what it covers.
Sources
- Consumer Financial Protection Bureau, Closing Disclosure explainer: Property taxes are prorated at closing based on current assessed values and tax rates on the books at time of settlement
- California State Board of Equalization, Assessment Appeals guide: In California, only the assessed owner of record or the person who pays the tax has standing to file an assessment appeal; the lien date is January 1 of each year
- Lincoln Institute of Land Policy, Understanding the Property Tax Appeal Process (2021): Residential property tax appeals typically take 6 to 18 months from filing to resolution depending on jurisdiction and backlog
- National Taxpayers Union Foundation, Property Tax Appeal Fees overview: Contingency-fee property tax appeal firms typically charge 30% to 50% of the first year's tax savings as their fee
- New York City Tax Commission, Appeal Procedures: New York allows a buyer to continue a seller-filed appeal after a property transfer if both parties agree and the Tax Commission is notified
- Florida Department of Revenue, Property Tax Oversight, Taxpayer Rights publication: Florida property owners have 25 days from the mailing of the TRIM notice to file a petition with the Value Adjustment Board
- Texas Comptroller of Public Accounts, Property Tax Protest and Appeal procedures: In Texas, the appeal deadline is May 15 or 30 days after the notice of appraised value is delivered, whichever is later
- International Association of Assessing Officers (IAAO), Standard on Mass Appraisal of Real Property: Arm's-length sale prices are recognized by assessment bodies as strong evidence of fair market value in appeal proceedings