I have an error on Form 8606 -Non Deductible IRA- Form 8606 is used to report nondeductible contributions to traditional IRAs, track your IRA basis, report conversions to Roth IRAs, and report certain Roth IRA distributions. If you have an error on Form 8606 related to nondeductible IRA contributions, it is usually caused by incorrect reporting of contributions, incorrect basis tracking, or misreported distributions. The form requires accurate year-by-year tracking of your IRA basis, which is the cumulative total of nondeductible contributions reduced by any tax-free distributions taken in prior years.
Common Errors and How to Correct Them
- Line 1 Error: Line 1 reports your nondeductible contributions to traditional IRAs for the year. This amount is generally your total IRA contributions for the year minus any amount you are eligible to deduct as a traditional IRA deduction, subject to contribution limits and IRS rules. You should also include any qualifying repayments that are treated as IRA contributions. You should not include contributions that were returned to you as excess contributions (with or without earnings).
- Line 2 Error: Line 2 reports your total basis in traditional IRAs as of the beginning of the year. If this is your first year filing Form 8606, your basis is zero. Otherwise, you must carry forward the prior year’s basis from your most recently filed Form 8606. This basis may be adjusted for prior distributions or corrections, and it must be tracked consistently from year to year.
- Line 7 Error: Line 7 reports distributions from traditional IRAs during the year. You must include taxable and nontaxable distributions except for amounts specifically excluded under IRS rules, such as direct trustee-to-trustee rollovers, Roth conversions (reported separately), recharacterizations, qualified charitable distributions, or certain corrective distributions. Accurate classification of distributions is required to avoid overstating taxable income or basis recovery.
- Line 14 Error: Line 14 represents your adjusted basis in traditional IRAs for the following year. It is generally calculated using IRS worksheet methods based on your total basis, distributions, and any remaining nondeductible contributions. The exact computation depends on whether part of your distribution is taxable or nontaxable, and it may require applying IRS allocation rules rather than a single fixed subtraction formula.
Amending Form 8606
If you discover an error after filing, you must correct it by filing Form 1040-X (Amended U.S. Individual Income Tax Return) and attaching a corrected Form 8606 for each affected year. The corrected form should reflect the accurate basis, contributions, and distributions as if the original error had not occurred. In some cases, taxpayers may also need to adjust related IRA transactions, such as recharacterizations or excess contribution removals, within IRS time limits.
Source:
Form 8606 Instructions (2025)
Disclaimer: Always verify details with current IRS forms and instructions or consult a tax professional for personalized advice.