If you scheduled a payment through Electronic Federal Tax Payment System (EFTPS), click on Payments from the EFTPS home page, login, then click Cancel a Tax Payment from the left menu and follow the instructions. You must do so at least two business days before the scheduled payment date.
You may revoke (cancel) your payment by contacting the U.S. Treasury Financial Agent at 888-353-4537. You must call to make a payment cancellation request no later than 11:59 p.m. ET two business days prior to the scheduled payment date.
If you scheduled a payment by credit card or debit card, contact the card processor to cancel the card payment.