1. Confirm exactly what's wrong. A corrected 1099 covers a few different problems: a wrong dollar amount, a misspelled name, a bad address, or an incorrect tax ID (SSN or EIN). Know which one you're fixing, since the amount matters for whether the IRS needs a correction with a new total or just corrected identifying information.
2. Fix it in QuickBooks first. Open the vendor's profile and correct the name, address, or tax ID directly on the record. If the dollar amount was wrong because of a miscategorized transaction, fix that transaction too, so your underlying numbers, not just the form, are accurate going forward.
3. Check whether you're still inside the correction window with QuickBooks' e-file service. If you e-filed the original through QuickBooks' 1099 e-file service, that service generally allows a corrected filing for a period after the original, not indefinitely. Go back into the Prepare 1099s flow and look for a correction or amendment option tied to the form you already filed.
4. If the window's closed, file the correction directly with the IRS. That means a paper Form 1099-NEC or 1099-MISC with the CORRECTED box checked, along with a corrected Form 1096, mailed to the IRS. This happens outside QuickBooks once its own correction window has passed.
5. Send the contractor an updated copy. They need the corrected form too, not just the IRS, especially if the dollar amount changed and it affects their own tax filing.
6. Keep a note of what changed and when. There's no dedicated correction log in QuickBooks, so a short note on the vendor record or in your own files, what was wrong, what you fixed it to, and the date, saves a headache if anyone asks later, your accountant included.