New York Form AU-11 is the application you file with the Department of Taxation and Finance to recover sales or use tax you paid in error, overpaid, or remitted as a vendor beyond what you actually owed. The Department must process a properly completed NY Form AU-11 sales tax refund claim within six months of receiving it, and many resolve faster.1New York State Department of Taxation and Finance. How to Apply for a Refund of Sales and Use Tax Get the form, deadline, and supporting documents right the first time and the process runs smoothly.
Confirm AU-11 Is the Right Form
AU-11 covers most sales and use tax refund situations, with two exceptions. For a refund of tax paid on motor fuel or diesel motor fuel, file Form FT-500. If you are a Qualified Empire Zone Enterprise seeking a refund on purchases made on or after September 1, 2009, file Form AU-12 instead.2New York State Department of Taxation and Finance. Form AU-11 Application for Credit or Refund of Sales or Use Tax
Who Can File
Two groups can claim a refund. Purchasers who paid tax on an exempt transaction or overpaid the correct amount can file. Vendors who collected and remitted more tax than they owed can also file, but with a catch: a vendor who collected tax from a customer and sent it to the state cannot get that money back until the vendor first repays the customer and can prove it.3New York State Senate. New York Tax Law 1139 – Refunds
Qualifying scenarios include tax paid on property used for fabrication and out-of-state shipment, cancelled sales, returned merchandise, bad debts, tax collected erroneously, and motor vehicle lemon-law buybacks.4New York Codes, Rules and Regulations. 20 CRR-NY 534.1 – General Tax Law Section 1119 adds narrower categories, including bulk purchases later shipped out of state and property bought by contractors under lump-sum construction contracts.5New York State Senate. New York Tax Law 1119
Filing Deadline
File within three years from the date the tax was payable to the Department, or two years from the date you paid the tax, whichever is later.1New York State Department of Taxation and Finance. How to Apply for a Refund of Sales and Use Tax Missing the deadline ends the claim.
Which window you file under also caps how far back the refund reaches. File within the three-year period and you can recover tax paid during the three years before the claim (plus any extension period for the original return). If you miss that window but file within two years of payment, only the tax paid during those two years is recoverable.3New York State Senate. New York Tax Law 1139 – Refunds Filing sooner preserves a larger refund.
A separate rule applies when the Department has assessed tax against a seller and notified the purchaser of the amount due. In that situation, the purchaser has two years from the date of the Department’s notice to file.3New York State Senate. New York Tax Law 1139 – Refunds
What to Gather Before You File
Incomplete submissions are the most common reason claims stall. Pull everything together first.
- Your Social Security number or Employer Identification Number.
- Legible copies of every invoice, showing the vendor’s name and address, the date, items purchased, and tax charged. If the transaction took place somewhere other than the vendor’s address, note where you took title or possession.
- Proof the tax was actually paid: cancelled checks, bank statements, or credit card records.
- The specific sales tax jurisdiction where each transaction occurred. New York has many local jurisdictions at different rates, and the Department credits the refund to the right one.
- If a customer gave you an exemption certificate after you already remitted the tax, include the original invoice, the certificate, any credit memoranda, and proof of repayment to the customer if you have refunded them.
These requirements come from the AU-11 instructions. For claims with many transactions, you can substitute a summary table listing invoice number, date, vendor or customer name, item description, invoice amount excluding tax, tax billed, taxing jurisdiction, and reason for the refund. Contractors have a separate, more detailed table format.6New York State Department of Taxation and Finance. Instructions for Form AU-11 Application for Credit or Refund of Sales or Use Tax
How to Fill Out the Form
Download the current AU-11 from the Department’s website.7New York State Department of Taxation and Finance. Form AU-11 Application for Credit or Refund of Sales or Use Tax It is a fillable PDF, so you can type into the fields before printing.
Enter your name or business name, address, and SSN or EIN at the top. If you are registered for sales tax with the Department, indicate that and provide your sales tax identification number. Registered vendors can split the recovery between a credit applied to a future return and a cash refund; if you want both, state the amounts separately.
Select the reason code that matches your situation. The codes are printed in the AU-11 instructions. Choosing the wrong one can slow processing or generate unnecessary questions from the auditor.
Use the explanation section to describe the basis for the claim in real terms. Do not just write “tax paid in error.” Spell out what you bought, why it was exempt or overtaxed, and how you arrived at the refund amount. If the math spans multiple transactions or jurisdictions, attach a worksheet.
Sign and date the form. Unsigned applications are not processed.
How to Submit
Businesses registered for sales tax can file online through the Business Online Services portal. Log in, select “Sales tax – file and pay” from the left-hand menu, then choose “Sales tax refund request” from the drop-down.7New York State Department of Taxation and Finance. Form AU-11 Application for Credit or Refund of Sales or Use Tax Online filing generates an immediate confirmation.
Individual taxpayers who are not registered for sales tax cannot file online. Print the completed form, attach all supporting documentation, and mail it to the address in the current instructions.7New York State Department of Taxation and Finance. Form AU-11 Application for Credit or Refund of Sales or Use Tax Use the address on the current version; older versions may list an outdated one.
Filing Through a Representative
Someone else can sign and submit AU-11 for you if you also file Form POA-1, Power of Attorney, specifically authorizing the representative to sign tax documents. Without that authorization, the Department will reject the application.1New York State Department of Taxation and Finance. How to Apply for a Refund of Sales and Use Tax
POA-1 accepts individual names, not firms. You and the representative both sign and date it. Joint filers who use different representatives each need their own POA-1. Unless you limit the scope in Section 4, the representative can do anything you could do, including receiving confidential tax information and agreeing to extend the time for the Department to assess tax.8New York State Department of Taxation and Finance. Form POA-1 Power of Attorney If you only want your accountant or attorney to handle the refund claim, narrow the authority in Section 4.
What Happens After You File
The Department has six months to process a properly completed claim.1New York State Department of Taxation and Finance. How to Apply for a Refund of Sales and Use Tax An auditor may ask for additional records or clarification on a specific transaction. Respond quickly; delays on your side extend the timeline.
The Department can approve the claim in full, approve part of it, or deny it. Approved claims are paid by check or applied as a credit against future sales tax liabilities, depending on what you requested and whether you are a registered vendor.
Interest
Interest generally does not apply if the Department processes the claim within three months of receiving it in processible form. Beyond three months, interest may be owed, calculated from the date of overpayment.6New York State Department of Taxation and Finance. Instructions for Form AU-11 Application for Credit or Refund of Sales or Use Tax The overpayment rate is set quarterly; for the first quarter of 2026 it is 6%.9New York State Department of Taxation and Finance. Interest Rates 1/01/2026 – 3/31/2026
Recordkeeping
Keep the AU-11, supporting documents, and the Department’s response for at least three years from the date of the original return, or two years from when the tax was paid, whichever is later.10Internal Revenue Service. How Long Should I Keep Records
If the Claim Is Denied
A denial notice includes a response deadline. That deadline is firm. You have two options.
Conciliation Conference
Request a conciliation conference through the Bureau of Conciliation and Mediation Services by filing Form CMS-1-MN before the deadline on the denial notice. Late requests are not accepted. After BCMS accepts the request, you receive an acknowledgment letter in about 10 days and a formal appointment notice at least 30 days before the conference.11New York State Department of Taxation and Finance. Form CMS-1-MN Request for Conciliation Conference
An impartial conferee runs the session, which typically runs under two hours. A Department representative explains the state’s position, then you present your case and any additional documentation. If the conferee proposes a resolution you accept, you sign a consent and the matter closes. If you disagree, the conferee issues a Conciliation Order that binds both sides unless you appeal further.11New York State Department of Taxation and Finance. Form CMS-1-MN Request for Conciliation Conference
Division of Tax Appeals
You can skip BCMS or, if you disagree with the Conciliation Order, take the next step by filing Form TA-100 with the Division of Tax Appeals. TA-100 can only be filed by mail.12New York State Division of Tax Appeals. Forms Penalty and interest continue to accrue during the appeal, so weigh the delay against the amount at stake.
Penalties for a False Claim
Fraudulent or misleading refund applications carry stacking penalties under Tax Law Section 1145, on top of any other penalty the law provides:
- False exemption certificate: 100% of the tax that would have been due, plus $50 per certificate.
- Willfully filing a false return: up to $1,000 per return containing false information intended to reduce a liability.
- False document submitted to the Department: $100 per document or $500 per return.
- Aiding or assisting a fraudulent filing for compensation: up to $5,000.
Criminal penalties are also available under Article 37 of the Tax Law.13New York State Senate. New York Tax Law 1145 – Penalties and Interest
Federal Tax Treatment
A New York sales tax refund is generally not federal taxable income. The tax benefit rule only pulls a state refund into federal income if you previously deducted the underlying tax on Schedule A and received a federal tax benefit from that deduction. Most taxpayers either take the standard deduction or elect to deduct state income taxes rather than sales taxes, and neither situation creates income when the sales tax comes back. If you did elect to deduct state and local general sales taxes on Schedule A, ask a tax professional whether any portion of the refund must be reported.