Blue Star Bookkeeping · Austin, TX · Updated February 19, 2026
Common Tax Filing Mistakes We See Every Year
Most delays and IRS notices trace back to a small handful of avoidable mistakes: wrong or mismatched Social Security numbers, missing income forms, and math or entry errors from filing without a second set of eyes on the return.
Name and SSN/ITIN mismatches
If the name and Social Security number or ITIN on the return don’t exactly match what the Social Security Administration or IRS has on file — including for dependents — it can delay processing or trigger a notice.
Missing income
A 1099 you forgot about, a small side job, or interest from a savings account are all reported to the IRS independently of your return. If your return does not include them, the mismatch usually generates a letter later.
Filing status and dependent errors
Choosing the wrong filing status, or claiming a dependent that someone else has also claimed, are both common and both slow things down significantly while the IRS sorts it out.
Bank account and address errors
A single wrong digit in a bank routing or account number can send your refund to the wrong place. Double-checking this before filing is one of the simplest ways to avoid a real headache.
Common questions
What happens if I already filed and realize I made a mistake?
In many cases the return can be amended. Bring us what you filed and we will tell you whether an amendment is needed and how the process works.
Can a mistake trigger an IRS audit?
A simple mistake is more likely to trigger a notice asking for clarification than a full audit. If you do receive an audit or notice, our office has an IRS Enrolled Agent available to assist with eligible IRS matters and taxpayer representation.
Related service
Individual Tax Preparation →General information for Austin, TX taxpayers — not personalized tax or legal advice. Rules, thresholds, and deadlines change; confirm specifics for your situation with our office or the relevant government agency.
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Schedule a free 15-minute consultation. We will answer your questions and walk you through the process.