How to avoid simple errors in Tax filings with the US IRS. A lot of the processing is done by computers even though the IRS has lost 25% of its people or 28,000 in 2025. Tax filings need to be consistent, with all 1099's for IRA's accounted for, Information needs to be consistent and complete as computers catch these errors and ask for information. Prompt replies can clarify, but its best to do this from the beginning and save time.