To check your amended return status, use the IRS Where's My Amended Return tool at irs.gov/filing/wheres-my-amended-return. You need your SSN, date of birth, and zip code. Status is available 3 weeks after mailing a paper Form 1040-X, or immediately after e-filing. Amended returns take up to 20 weeks to process. You can also call 866-464-2050.
- Check your amended return status at irs.gov/filing/wheres-my-amended-return or by calling 866-464-2050
- Paper 1040-X: status appears in the tool 3 weeks after mailing. E-filed: status appears immediately.
- Processing takes up to 20 weeks. This is longer than a standard return and requires manual IRS review.
- Three status stages: Received, Adjusted, Completed. Each stage has a specific meaning.
- Do not file a second Form 1040-X while the first is still being processed.
- The tool covers the current tax year plus the 3 most recent prior tax years.
- If your amended return triggers an IRS letter (CP12 math correction, CP21 adjustment, or a CP2000 mismatch on the amended numbers), look it up by CP number in the IRS Notice Response Helper for response options. The IRS Notice Types Guide explains response deadlines and free help.
What Is Where's My Amended Return?
Where's My Amended Return (WMAR) is an IRS online tool that lets you track the status of a filed Form 1040-X. It is separate from the standard Where's My Refund tool, which only covers original returns.
You can access WMAR at irs.gov/filing/wheres-my-amended-return. The tool is available 24 hours a day, 7 days a week. A phone version is available at 866-464-2050, automated 24/7 and staffed Monday through Friday during IRS business hours.
WMAR covers:
- The current tax year (2025 returns filed in 2026)
- The 3 most recent prior tax years (2022, 2023, 2024)
- Only federal Form 1040-X — state amended returns are tracked separately through each state's revenue department
To use the tool you need your Social Security Number (or ITIN), date of birth, and zip code. The tool does not require a filing status or refund amount, unlike the standard Where's My Refund tool.
How to Check Your Amended Return Status: Step by Step
- Go to irs.gov/filing/wheres-my-amended-return on the IRS website.
- Enter your Social Security Number (or ITIN).
- Enter your date of birth (month, day, year).
- Enter the zip code from your most recently filed return.
- Select the tax year of the amended return you want to check.
- The tool will display one of three status stages: Received, Adjusted, or Completed.
If you mailed a paper Form 1040-X, wait at least 3 weeks before checking. The IRS must receive and log the return before it appears in the system. E-filed amendments appear immediately.
The tool updates once per day, overnight. Checking multiple times in one day will not show a different result.
The Three Amended Return Status Stages
Where's My Amended Return displays one of three status stages. Each has a specific meaning.
| Stage | What It Means | What Happens Next |
|---|---|---|
| Received | IRS has your Form 1040-X and is reviewing it | Processing begins. Allow up to 20 weeks. |
| Adjusted | IRS has made changes to your tax account | A notice will be mailed. Refund or bill to follow. |
| Completed | Processing is done | Refund issued or balance due. Check your mail for a notice. |
Received
The Received stage means the IRS has your 1040-X and has begun the review process. This stage can last several weeks to months. The IRS processes amended returns in the order received and each one requires manual review by an IRS examiner. Processing volume and complexity affect how long this stage lasts.
Adjusted
The Adjusted stage means the IRS has completed its review and made changes to your account. The IRS will mail you a notice explaining what changed. If your amendment results in a refund, it will be issued after the account adjustment completes. If you owe additional tax, the notice will include a payment due date.
Completed
The Completed stage means the IRS has finished processing your amended return. Any refund from the amendment is typically issued within 3 weeks of this stage. If you amended to report additional tax owed and paid with the 1040-X, no further action is needed once you see Completed.
How Long Does an Amended Return Take to Process?
The IRS states amended returns can take up to 20 weeks to process. This is significantly longer than a standard original return, which typically processes in 21 days or less for e-filed returns.
The longer timeline exists because amended returns cannot be processed automatically. Each 1040-X requires a manual review by an IRS examiner who must compare the original return to the amended figures and verify supporting documentation.
| Return Type | Typical Processing Time |
|---|---|
| E-filed original return (standard) | 10 to 21 days |
| Paper original return | 4 to 8 weeks |
| Form 1040-X (amended) — any method | Up to 20 weeks |
The IRS does not guarantee a processing date. If your return is beyond 20 weeks with no status update, call 800-829-1040 to speak with an IRS representative.
Interest accrues on amended return refunds. If your amendment results in a refund and the IRS takes longer than 45 days from the return due date (or filing date, whichever is later) to issue it, the IRS pays interest on the refund amount at the federal short-term rate plus 3 percentage points.
E-Filing vs. Paper Form 1040-X: Does It Matter?
For most tax years, Form 1040-X can be e-filed. E-filing does not shorten the processing window — the IRS still requires manual review — but it does provide faster visibility in the WMAR tool and makes your refund eligible for direct deposit.
| Filing Method | Status Visibility in WMAR | Processing Time | Refund Method |
|---|---|---|---|
| E-filed 1040-X | Immediately after submission | Up to 20 weeks | Direct deposit or paper check |
| Paper 1040-X (mailed) | 3 weeks after mailing | Up to 20 weeks | Paper check only |
E-filing is available for most but not all 1040-X situations. Some amended returns must be filed on paper, including certain prior-year returns and amendments involving specific forms not supported by the e-file system. Check with your tax software or preparer to confirm e-file eligibility for your situation.
When mailing a paper 1040-X, use a traceable delivery method (USPS Certified Mail or a private carrier with tracking). Keep proof of mailing in case the IRS claims non-receipt. The IRS mailing address depends on your state of residence and whether you are including a payment.
When to Call the IRS About Your Amended Return
The IRS states that processing can take up to 20 weeks. Wait until the 20-week window has passed before calling. Most calls before that point will result in the representative confirming the return is still in processing with no additional information available.
Call the IRS at 800-829-1040 if:
- Your return has been in Received status for more than 20 weeks
- Your return shows Adjusted but you have not received a notice after several weeks
- Your return shows Completed but no refund has arrived after 3 weeks
- The tool shows no record of your return after the 3-week waiting period (paper) or 2 weeks (e-filed)
Call the amended return hotline at 866-464-2050 for faster access to agents trained on 1040-X questions.
If the processing delay is causing significant financial hardship, contact the Taxpayer Advocate Service at 877-777-4778. TAS is an independent organization within the IRS that helps taxpayers resolve problems when normal IRS channels have not worked.
Common Reasons to File Form 1040-X
Amended returns are filed when the original return contained an error or omission. The most common situations include:
- Missing income: Receiving a corrected W-2 or 1099 after filing that changes your reported income
- Missed deductions or credits: Forgetting to claim the Child Tax Credit, education credits, IRA deductions, or itemized deductions that you were eligible for
- Wrong filing status: Filing as Single when you qualified as Head of Household, or filing separately when a joint return would have been more beneficial
- Incorrect dependents: Adding or removing a dependent that affects credits and deductions
- Carryover corrections: Correcting prior-year errors that affect carryforward amounts such as capital loss carryovers or NOL carryforwards
- State conformity: Some states require you to file an amended state return after filing a federal 1040-X
Simple math errors on your original return do not require a 1040-X. The IRS corrects mathematical errors during processing and notifies you by mail if a correction was made.
The deadline to file an amended return for a refund is the later of: 3 years from the original return due date, or 2 years from the date you paid the tax. For most taxpayers, this is 3 years from April 15 of the filing year.
Amended Return Refunds: How They Are Issued
If your Form 1040-X results in a refund, the delivery method depends on how the amendment was filed. E-filed amended returns can receive the refund by direct deposit. Paper amended returns (mailed Form 1040-X) are issued a paper check regardless of how the original refund was received.
Refunds from amended returns typically arrive 3 to 4 weeks after the Completed stage appears in WMAR. If the refund does not arrive within 4 weeks of the Completed stage, call the IRS at 800-829-1040 to request a refund trace.
If your amendment results in additional tax owed, payment is due when you file the 1040-X. Unpaid balances from amended returns accrue interest and may accrue penalties from the original return due date. Pay as much as possible when filing to limit interest charges.
Practitioner Insight
At LMN Tax Inc., we advise clients to wait the full 20 weeks before calling the IRS about a mailed amended return. Calling before that threshold rarely produces useful information and often results in a generic "still processing" response. The WMAR tool updates weekly, typically overnight on Wednesdays. For clients who e-filed a 1040-X, status appears within 24 to 72 hours of IRS acknowledgment. The most common reason for extended delays we see is a 1040-X that was mailed before the original return was fully processed. Filing the amendment too quickly after the original can cause the IRS processing system to route the amendment into a manual review queue.
Real-World Scenario
Marcus, single filer, TY 2024: Marcus filed his 2024 federal return on March 10, 2025 and received a $1,200 refund by direct deposit on March 28. In April, he received a corrected 1099-R showing additional retirement income of $8,200 that was not included on his original return. He files a Form 1040-X in May 2025 by paper mail, expecting to owe additional tax.
His WMAR status shows Received on May 31 (3 weeks after mailing). He waits. The status updates to Adjusted on August 18, approximately 11 weeks after filing. The IRS notice (CP21B) arrives by mail one week later. The notice confirms he owes $1,148 in additional federal income tax plus $47 in interest. The original $1,200 refund is not affected.
Marcus pays the balance online at IRS Direct Pay within 21 days of the notice date, which stops additional interest from accruing. Total time from amended return filing to resolution: 13 weeks. His experience was within the normal IRS processing range and did not require a Taxpayer Advocate escalation.
When the Amended Return Process Does Not Work as Expected
- Filing too soon after the original return: Amended returns filed while the original is still being processed frequently enter a manual review queue. The IRS recommends waiting until the original return is fully processed and any refund has been received before filing Form 1040-X.
- Filing a second amendment while the first is pending: WMAR can only track up to three amendments at a time, but filing a second 1040-X before the first is resolved adds complexity and typically restarts the processing clock. Amend once with all corrections if possible.
- Expecting WMAR to show status immediately after mailing: Paper-filed 1040-X submissions do not appear in WMAR until approximately 3 weeks after the IRS receives the envelope. Checking before that window returns a "not found" result that does not indicate a problem.
- Claiming the amended refund should arrive quickly: Even after the WMAR status changes to Completed or Adjusted with a refund, delivery takes an additional 3 to 4 weeks for direct deposit (e-filed returns) or 4 to 6 weeks for a paper check (paper returns). The Completed stage does not mean the refund has been issued.
- Using WMAR to track state amended returns: The WMAR tool is federal only. Each state has a separate tracking system for amended state returns, and processing times vary widely by state. Some states do not have online amended return tracking at all.
Frequently Asked Questions
Next Step
Check your amended return status at the IRS WMAR tool (irs.gov/filing/wheres-my-amended-return). Allow 3 weeks after mailing a paper 1040-X before the status becomes available, or check immediately after e-filing. If your status has been in Received for more than 20 weeks, contact the IRS at 866-464-2050. If you are also waiting on your original refund, use the IRS Refund Timeline Guide to understand the standard processing stages for original returns.