Most rejected or delayed returns are not caused by complicated tax positions. They are caused by a name that does not match a card, a missing signature, or a number typed one digit off. The IRS publishes the list of errors it sees most, and almost all of them are mechanical.
The errors the IRS sees most
- Wrong Social Security number or name. Every SSN must appear exactly as printed on the card, and every name — yours and each dependent's — must match the name on that person's Social Security card.
- Filing before all your documents arrive. A return sent before the last 1099 shows up is a return that will need correcting.
- Wrong filing status. More than one status can apply to the same person, and the wrong choice changes the tax.
- Math errors. Still common, from simple addition to the calculations behind credits.
- Inaccurate income entries. Wages, dividends, interest and anything else already reported to the IRS on an information return.
- Wrong bank routing or account number. A refund sent to the wrong account is a slow problem to unwind.
- An unsigned return. An unsigned return is not valid. On a joint return, in most cases both spouses must sign.
Filing electronically prevents a good share of these, because the software does the arithmetic and prompts for what is missing. It does not catch a name that does not match a card, and it does not catch the two errors below.
Two that hit our clients harder than most
An ITIN that has gone inactive. An ITIN not used on a federal return for three consecutive tax years becomes inactive. Renewal requires a Form W-7 and it is not instant. A return filed with an inactive ITIN can lose credits the household actually qualified for. If anyone on your return uses an ITIN, check its status in the autumn, not in April. That is part of what we handle with ITIN applications and renewals.
Name mismatches in households with two surnames. Social Security records hold one exact version of a name. If the card says one thing and the return says another — a compound surname shortened, a maternal surname dropped, a married name never updated — the return can be rejected over something that has nothing to do with your taxes. Copy the card, not your memory of it.
The question everybody has to answer
Every person filing a Form 1040, 1040-SR, 1040-NR, 1041, 1065, 1120 or 1120-S must check "Yes" or "No" to the digital asset question. It is not limited to people who bought or sold anything — every filer answers it.
It gets missed because it looks like it belongs to somebody else, and it gets answered wrongly because people assume that not selling means the answer is no. If you received digital assets in any form during the year, that assumption is worth checking before you sign. What counts as a reportable digital asset event is a longer subject than the checkbox suggests.
You already filed and something is wrong
Not every error needs an amended return. The IRS corrects some math errors on its own and will write to you about it. When an amendment is genuinely needed, it is filed on Form 1040-X, and you file a separate 1040-X for each year you are amending.
The important thing is to know which situation you are in before you act. Filing an unnecessary amendment on top of a correction the IRS has already made creates a second problem. If you have received a notice you do not understand, that is the moment to get help reading it — before replying and before the response window closes. That is exactly what audit assistance is for.
When it stops being a typo
A letter proposing changes to your return, a request for documents, or an examination is a different situation from a mistyped digit. In those cases you are entitled to be represented, and an Enrolled Agent — a practitioner licensed to represent taxpayers before the IRS — or a CPA can deal with the agency directly on your behalf.
This article describes general IRS guidance current as of July 2026. It is not advice about your return or about any notice you have received.
Got a letter from the IRS? Do not answer it alone
Bring the notice, the return it refers to, and the envelope it came in — the deadline is usually printed on it. We will tell you what the IRS is actually asking for, whether an amended return is the right answer, and who should sign the response. Start with representation before the IRS, or call +1 (954) 724-1114.