Form 1040-V – Payment Voucher for Individual Income Tax

IRS Form 1040-V is a payment voucher used by taxpayers who are mailing a check or money order to pay their federal income tax balance due. It helps the IRS apply your payment correctly and efficiently. If you owe taxes after filing Form 1040, 1040-SR, or 1040-NR, include Form 1040-V when sending your payment by mail. Be sure to complete the form accurately with your Social Security Number and payment details to avoid processing delays.

https://us.meruaccounting.com/....what-we-do/tax-retur