"Source:
https://www.irs.gov/uac/Pay-Taxes-by-Electr[product key removed]rawal
To cancel your payment you can go to the IRS website linked above. Scroll down to "Cancellations, Errors and Questions."
It will tell you how to phone "IRS efile Payment Services" and cancel."
I just went to their website and there is a phone number to call, it is all automated and I had my payment canceled in about 3 minutes. you need the amount of your payment and your bank account number where the EFT was coming from. Pretty easy.
