What an 810 code means and why the IRS holds your refund
An 810 refund freeze means the IRS has put your tax refund on hold because it detected a mismatch between what you reported and what their records show. The most common trigger is a difference in income reported to them by your employer, bank, or other payer compared to what appears on your return. The IRS does not release the refund until the discrepancy is resolved.
This is not a penalty or an audit notice. It is an automated hold that prevents the IRS from sending money out while they verify the numbers match. The freeze typically lasts between 30 and 120 days, depending on how quickly you respond and how backed up the IRS processing center is.
The IRS will send you a letter (usually within two weeks of filing) explaining which line item triggered the hold and what information they need from you. This letter is your roadmap for fixing it.
Key Takeaways
- An 810 freeze happens when income or other figures on your return do not match what the IRS already has on file from employers, banks, or other sources.
- The IRS sends a letter explaining the mismatch; read it carefully because it tells you exactly what to do next.
- Most 810 freezes resolve by either correcting your return, providing documentation that supports your numbers, or waiting for the IRS to match records on their end.
- You can check the status of your frozen refund using the IRS Where's My Refund tool, but it will show "under review" until the hold lifts.
- If you do not receive a letter within 30 days or if the freeze lasts longer than 120 days, contact the IRS Taxpayer Advocate Service for help.
Read the IRS letter carefully before taking action
The letter the IRS sends will arrive at the address on your return, usually within 14 days of filing. It will have a specific notice number (often CP2000, CP2501, or similar) and will identify which line on your return does not match their records. Do not ignore this letter or assume you know what went wrong.
The letter will tell you one of three things: that you reported income the IRS does not have a record of, that you did not report income they do have a record of, or that a credit or deduction you claimed does not match their data. It will also give you a deadline to respond—usually 30 days from the date on the letter.
Keep the letter and any documents it references. You will need the notice number and the specific items flagged when you contact the IRS or file a response.
Correct your return if you made a mistake
If the IRS letter points out an error you actually made—for example, you transposed a number from a W-2, or you forgot to report a 1099 form—the fastest fix is to file an amended return using Form 1040-X. This tells the IRS you caught the mistake and are correcting it yourself.
File the amended return as soon as you can. Include a note referencing the notice number from the IRS letter so they know this correction is in response to their hold. Mail it to the same IRS address shown on the original letter. Processing an amended return typically takes 8 to 12 weeks, but it often clears the 810 freeze faster than waiting for the IRS to resolve it on their own.
Keep a copy of the amended return and the mailing receipt. If the freeze does not lift within 60 days of mailing, you can use these to follow up.
Provide documentation if your numbers are correct
If your return is accurate and the mismatch is on the IRS side—for example, you reported income correctly but a 1099 form they received shows a different amount—you can respond to the letter by sending documentation that supports your numbers.
Common documents include bank statements showing deposits, copies of the actual W-2 or 1099 forms you received, invoices or receipts for business income, or correspondence from the payer explaining the discrepancy. Write a brief letter explaining which line item you are addressing and why your number is correct, then attach the supporting documents.
Send everything to the IRS address listed on the notice letter. Use certified mail with return receipt so you have proof of delivery. The IRS will review your documents and either lift the freeze or send you another letter if they need more information.
Track your refund status while the freeze is in place
You can check on your frozen refund using the IRS Where's My Refund tool at irs.gov. Enter your Social Security number, filing status, and the exact refund amount from your return. The tool will show "under review" or "being processed" while the 810 freeze is active.
The tool updates once per day, usually overnight. Checking it multiple times in the same day will not give you new information. The IRS does not provide a specific date when the freeze will lift, only that it is under review.
If you filed electronically, you can also call the IRS at 1-800-829-1040 to ask for a status update. Have your Social Security number, filing status, and the notice number from the IRS letter ready. Wait times are often long, especially during tax season.
What to do if the freeze lasts longer than 120 days
Most 810 freezes resolve within 30 to 120 days. If yours has been on hold longer than that and you have not received a second letter from the IRS, contact the Taxpayer Advocate Service (TAS). This is a free IRS office that helps when normal channels are not working.
You can reach TAS by calling 1-877-777-4778 or by visiting taxpayeradvocate.irs.gov. Explain that your refund has been frozen for more than 120 days and you have not received a response to your documentation or amended return. TAS can escalate your case and often get results faster than calling the main IRS line.
TAS will ask for your notice letter, copies of any documents you sent, and a timeline of what you have done so far. They may contact the IRS processing center on your behalf to find out what is holding up the freeze.
Prevent 810 freezes on future returns
Most 810 freezes happen because of simple mismatches that could have been caught before filing. When you receive W-2s and 1099s in January, compare the income figures to what you plan to report on your return. If a number does not match, contact the payer and ask for a corrected form before you file.
If you are self-employed or have multiple income sources, keep detailed records of what you reported to the IRS on prior returns. Income that fluctuates year to year can sometimes trigger a freeze if the IRS system flags an unusual change. A note in your return explaining a large increase in income can help prevent a hold.
File your return as early as possible in the tax season. The IRS processes returns in the order they arrive, and early filers often get through the system before backlogs build up. A return filed in February is less likely to sit in a queue waiting for review than one filed in April.
Frequently Asked Questions
Will I lose my refund if the 810 freeze is not resolved?
No. A freeze holds the refund in place while the IRS verifies the numbers, but it does not cancel the refund or forfeit the money. Once the mismatch is resolved, the IRS will send the refund. If the IRS determines you owe money instead, they will send you a bill rather than a refund.
Can I get my refund before the 810 freeze is lifted?
No. The IRS will not release the refund while the freeze is active. The only exception is if you file an amended return that corrects the issue; in that case, the IRS may process the refund faster, but there is no may provide.
What if I did not receive the IRS letter about the 810 freeze?
Check your mail carefully, including junk folders if you signed up for IRS email notifications. If 30 days have passed since you filed and you have not received a letter, call the IRS at 1-800-829-1040 and provide your Social Security number. They can tell you what triggered the freeze and what you need to do.
Does a 810 freeze affect my other tax credits or deductions?
The freeze typically applies only to the refund itself, not to the credits or deductions you claimed. However, if the IRS determines that the mismatch affects your may be able to access for a credit (for example, if unreported income disqualifies you from the Earned Income Tax Credit), they may adjust those as part of resolving the freeze.
How long does it take to resolve a 810 freeze after I send documentation?
Processing times vary. If you send documents by mail, expect 4 to 8 weeks for the IRS to review them and either lift the freeze or request more information. If you file an amended return, processing typically takes 8 to 12 weeks. During peak tax season (March through May), times can be longer.