It normally takes about six to eight weeks for the IRS to issue a refund if you file a “complete and accurate” paper tax return, but it may take less than three weeks if you file electronically. Either way, even minor mistakes could delay the processing of your return. Here are a few of the most common errors the IRS finds on taxpayer forms. Mistakes People Make 1 2 3 4 Incorrect or missing Social Security numbers Misspelled last name (it must match Social Security card) Incorrect filing status for the taxpayer’s situation Math or computation errors (less common when returns are filed electronically) Source: Internal Revenue Service, 2023