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Topic no. 303, Checklist of common errors when preparing your tax return | Internal Revenue Service Topic No. 303, Checklist of common errors when preparing your tax return

COMMON TAX RETURN MISTAKES TO AVOID

Issue Number: Tax Tip 2026-13

Mistakes and errors can happen, but most are easily avoidable when it comes to filing federal income tax returns. Taxpayers are encouraged to review their entire return before filing to make sure it is correct and complete. This is the case even if someone else prepared it, because ultimately, it’s the taxpayer’s responsibility to ensure the information on the return is accurate.

Here are just a few common errors that can be avoided:
Filing too soon: Most tax documents should have been received by now, but taxpayers need to be sure they have all their tax reporting documents before filing. The fastest and easiest way for taxpayers to view their tax records is by logging on to their IRS Online Account.
Incorrect filing status: Be sure to select only one filing status and make sure it is the correct one. What is my filing status? can help with the determination.
Inaccurate information: Taxpayers should carefully when entering any wages, dividends, bank interest and other income they receive to make sure they report the correct amounts.
Misspelled names or missing social security numbers: All names and taxpayer identification numbers must be provided for everyone listed on the return. Social security numbers and names should be entered exactly as they appear on each person’s Social Security card. If there have been any name changes, be sure to contact the Social Security Administration at SSA.gov or call them at 800-772-1213.
Credits and deductions: There are several new deductions and changes to certain credits for 2026. Taxpayers should make sure any deductions and credits are calculated correctly, and necessary documentation is provided.
Unsigned return: An unsigned return is considered invalid. If it’s a joint return, both must sign and date. However, exceptions may apply for members of the armed forces or other taxpayers who have a valid power of attorney.
Incorrect bank account information: Taxpayers who are owed a refund should choose direct deposit. This is the fastest way for them to get their money. However, taxpayers need to make sure they use the correct routing and account numbers on their tax return.

Submitting tax returns electronically ensures greater accuracy. The e-file system often detects common errors and rejects a tax return, sending it back to the taxpayer for correction. This could reduce or eliminate delays in processing a federal tax return.

Source: IRS

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