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IRS Form 1040X (2015) — Amended U.S. Individual Tax Return
Download IRS Form 1040X (2015) to amend your tax return, correct filing mistakes, or update income and deductions. Complete, print, and submit your form with confidence.
Official IRS form · Instant download · No signup required
What Is This Form
IRS Form 1040X (2015) is the Amended U.S. Individual Income Tax Return used to correct errors or update information on a previously filed tax return. It applies to anyone who already filed a 1040, 1040A, or 1040EZ for tax year 2015 and needs to fix income, deductions, credits, or filing status.
Late Filers
This IRS form allows taxpayers who filed their 2015 tax return after the April 2016 deadline to correct errors or omissions.
Multiple Income Sources
Filers with wages, self-employment income, or investment earnings may need to amend if a W-2 or 1099 was incorrect, updated, or originally omitted from their filed return.
Itemizing Deductions
Those who claimed the wrong deduction type or missed a qualifying expense can file an amended return to correct their deduction method or add overlooked amounts.
Claiming 2015 Credits
Filers who missed a 2015 credit, like the Earned Income Credit, Child Tax Credit, or Premium Tax Credit, can amend their tax return to claim it.
IRS Compliance
If the IRS notifies you of an error on your tax return, read the instructions carefully. Some situations require a Form 1040X. Others require a direct response.
Citizens Abroad / Military
If their returns incorrectly report foreign income exclusions or special deductions, U.S. citizens living abroad or military personnel may need to amend their returns.
Eligibility
Individuals who identify an error after submitting a 2015 federal tax return are required to submit IRS Form 1040X (2015). This form is intended to rectify an earlier tax return, not to replace it.
Late Filers
If their 2015 return was filed after the April 2016 deadline and errors were found, taxpayers should file an amended return to correct the figures.
Multiple Income Sources
After filing, people who receive a corrected W-2 or 1099 should update their return with the correct income, including wages, freelance income, dividends, and retirement distributions.
Itemizing Deductions
In 2015, filers who took the standard deduction but later realized they could itemize can file an amended return to correct their deduction method.
Claiming 2015 Credits
If you missed the Earned Income Credit, American Opportunity Credit, or Premium Tax Credit, file an amended return before the refund window closes.
IRS Compliance
CP2000 notices and IRS 2015 return correspondence contain instructions. File Form 1040X only if the adjustment is correct and the filer has additional income, credits, or expenses.
Citizens Abroad / Military
U.S. citizens abroad or active-duty military who misreported foreign-earned income exclusions, combat pay, or treaty-based adjustments should file an amended return.
Step-by-Step
Complete your amended tax return correctly with these steps. Do not assume general instructions when amending your return. Some steps reflect 2015 tax year rules and figures.
1. Gather your documents before starting
Before you begin, collect your original 2015 tax return, all W-2s and 1099s, and any updated income or correction documents. Having complete records ready helps prevent errors and ensures your amended return is accurate from the start.
2. Choose the correct filing status (2015 Only)
The five filing statuses that candidates may select for the 2015 tax year are single, married filing jointly, married filing separately, head of household, and qualifying widow or widower with dependent child. After the filing deadlines, status changes are restricted, and certain eligibility rules or labels may differ from those that are in effect for the current tax year.
3. Report all income on the correct lines
When reporting income, utilize the line references from the 2015 Form 1040. Wages are recorded on Line 7, interest on Line 8a, dividends on Line 9a, IRA distributions on Line 15a, pensions on Line 16a, unemployment on Line 19, and other income on Line 21. In 2015, unemployment compensation was fully taxable.
4. Calculate Adjusted Gross Income (AGI)
Deducting total income from above-the-line adjustments, such as educator expenses, student loan interest, contributions to an individual retirement account (IRA), and self-employment tax deductions, is how the AGI is calculated. Your adjusted gross income (AGI) determines whether or not you are eligible for a variety of credits, deductions, and phase-out limits.
5. Choose your deductions and apply exemptions (2015 Only)
In 2015, the standard deduction for singles and married couples filing separately was $6,300; for married couples filing jointly and qualifying widows or widowers, it was $12,600; and for head of household, it was $9,250. There was a phase-out of exemptions for higher-income individuals, but each exemption was $4,000.
6. Claim the 2015 Premium Tax Credit (2015 Only)
If eligible, claim the 2015 Premium Tax Credit on Form 8962. This credit helps pay health insurance premiums for Marketplace plans based on household size and income. Include Form 8962 in your amended return.
Filing Deadline — April 18, 2016
The original filing deadline for 2015 tax returns was April 18, 2016, which was moved from April 15 due to Emancipation Day in Washington, D.C. Taxpayers who requested an extension had until October 17, 2016, to file. Interest on unpaid taxes began accruing from the April deadline, regardless of any extension status.
Refund Deadline — Likely Expired
The refund deadline is typically the later of three years from the original filing date or two years from the date the tax was paid. For most 2015 returns, this window has closed. However, certain exceptions may apply depending on filing circumstances, so review your situation carefully.
Processing Time — Allow Several Months
Amended returns for tax year 2015 generally take eight to twelve weeks to process after the IRS receives them. In some cases, processing can take 16 weeks or longer. If additional tax is owed, submitting payment with your Form 1040X can help reduce penalties and interest.
E-Filing Restrictions — Paper Only
Form 1040X for tax year 2015 cannot be filed electronically and must be submitted by mail. All amended returns for this year must be filed on paper and sent to the correct IRS processing center. Always review the official IRS instructions to confirm the proper mailing address for your state.
Missing W-2s or Tax Records for 2015?
Late filers often no longer have their original 2015 income documents. IRS and Social Security Administration records can help you reconstruct the information needed to file an amended return accurately.
IRS Wage & Income Transcript
This transcript contains all income reported to the IRS for tax year 2015, including W-2s, 1099s, and other third-party statements filed under your Social Security number.
IRS Account Transcript
This transcript shows your original tax return details, including tax assessed, payments made, and any adjustments or penalties posted to your 2015 account for review purposes.
Social Security Administration
The SSA can provide copies of W-2s and earnings data from prior years, allowing you to complete Form 4852 when original forms are missing or unavailable.
Contact Prior Employers
Employers are generally required to retain payroll records for a minimum of four years, meaning some may still have your 2015 wage documentation on file.
Do not estimate income figures — use IRS transcripts to match reported amounts exactly and reduce the risk of follow-up notices or further IRS correspondence.
Missing W-2s or Tax Records?
You can still complete your return even without original records
Penalties and interest on any unpaid 2015 tax have been accruing since April 18, 2016. Filing the correct return and submitting an additional tax payment as soon as possible can help limit further interest and penalty exposure on your outstanding balance.
Failure-to-File Penalty
(5% per month, up to 25%)
This penalty applies when you do not file your return on time and have unpaid taxes. It accrues at 5% per month from the original due date and caps at 25%, with a minimum penalty if the delay exceeds 60 days.
Failure-to-Pay Penalty
(0.5% per month + interest)
This penalty applies to unpaid taxes, even if you filed your return on time. It accrues at 0.5% per month on the outstanding balance, while interest compounds daily on both the tax owed and any accumulated penalties.
Penalty Abatement Options
(First-Time Abatement & Reasonable Cause)
The IRS may reduce or remove penalties through First-Time Abatement or reasonable cause relief. First-Time Abatement is available if you have a clean compliance history, while reasonable cause requires showing valid circumstances that prevented timely filing or payment.
Filing late is always better than not filing. Filing your return quickly can reduce penalties because the failure-to-file penalty is ten times higher than the failure-to-pay penalty.
These are the most common errors that cause IRS delays, processing issues, or missed credits when filing an amended 2015 return.
- Using the wrong tax year form — File a separate Form 1040X for each year amended. Using the wrong year’s forms or instructions can delay processing or cause rejection.
- Missing Schedule M / 2015-specific credit — Failing to include Form 8962 for the Premium Tax Credit is common. Always attach the required year-specific forms when correcting credits.
- Wrong filing status label — Not all filing status changes are allowed. Switching from married filing jointly to separate after the deadline is generally not permitted.
- Applying Pease limitations incorrectly — The 2015 Pease limitation reduced itemized deductions for higher-income taxpayers. Misapplying or ignoring it can result in overstated deductions and inaccurate totals.
- Making unemployment compensation partially tax-free — In 2015, unemployment compensation was fully taxable, and reporting only part of that income is incorrect and must be corrected on the proper line.
- Assuming a refund is still available — Most 2015 refund claims are now time-barred, so confirm eligibility before filing an amended return if you expect to receive a refund from the IRS.
- Missing or incorrect Social Security numbers — An incorrect or missing SSN prevents IRS record matching. Such errors often cause delays or result in the return being rejected.
- Unsigned return — Form 1040X must be signed and dated before submission. Joint returns require both spouses’ signatures, or the IRS will treat the return as incomplete.
- Missing attachments — Include all revised schedules, W-2s, and corrected 1099s. Missing documents can delay processing or cause the IRS to return the amended filing unprocessed.
What is IRS Form 1040X (2015) used for?
IRS Form 1040X (2015) is used to correct errors on a previously filed 2015 tax return. You can update income, change filing status, claim missed credits, or adjust deductions after receiving corrected tax documents like a revised W-2 or 1099.
Can I still file an amended return for tax year 2015?
Yes, you can still file an amended return for tax year 2015 if you previously submitted an original return. However, the deadline to claim a refund has likely passed. You can still amend to correct errors, report additional income, or address IRS notices.
Can I electronically file Form 1040X for 2015?
Form 1040X for the 2015 tax year cannot be submitted electronically. You are required to complete the form on paper, attach any necessary supporting documents, and mail it to the IRS processing center that is specified in the official instructions.
How long does it take the IRS to process an amended return?
The IRS typically processes amended returns within 8 to 12 weeks, though some cases can take up to 16 weeks or longer. Processing time depends on the complexity of the return, the accuracy of submitted information, and the IRS’s current workload and backlog.
What if I owe additional tax on my 2015 amended return?
If you owe additional tax on your 2015 amended return, submit payment with your filing to reduce interest and penalties. Interest has been accruing since the original due date, so paying promptly can minimize the total amount owed and avoid further charges.
Do I need to file state forms as well?
An amended federal return may affect your state tax return, depending on your state’s rules. Some states require separate amended filings if federal changes impact taxable income. Review your state’s requirements carefully and include supporting documents if a state amendment is necessary.
How can I check the status of my amended return for IRS Form 1040X (2015)?
You can check your amended return status using the IRS “Where’s My Amended Return” tool on the IRS website. Enter details from your previously filed tax return, including filing status and income. Processing updates may take weeks to appear after you submit your amended tax return.
What information do I need to complete Form 1040X (2015)?
To complete Form 1040X, gather your original tax return, supporting documentation, and details about any mistakes. Use the three columns to show original amounts, changes in Column B, and corrected totals. Include updated income, deductions, credits, and any additional tax owed when you submit.
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