I've got some insights regarding the instructions for amending the 1099-NEC forms, @j-boysen.
For the 2023 1099-NEC or 1099-MISC forms, if you e-file them with us, you can submit amended forms through QuickBooks Online, QuickBooks Contractor Payments, or QuickBooks Payroll starting in 2024. Currently, we don't have a specific date for when the instructions will be available. You can check back later for updates.
For all other years, you'll need to work directly with the IRS to amend your 1099 forms manually. You can find instructions from the IRS on how to do so. Once you've corrected the forms, you'll need to provide the corrected return to the recipient or contractor yourself.