Where do i mail 1040X form payment?

To mail your Form 1040X payment, send it to the address specified in the instructions for the form, which varies based on your state of residence and whether you are including a payment. If you are not enclosing a payment, you can mail it to the designated address for processing without payment. For the most accurate address, refer to the IRS website or the instructions included with your Form 1040X. Make sure to use the correct postage and consider sending it via a secure mailing method.