Call the IRS e-file Payment Services at 1-888-353-4537. They're available 24/7:
- Once the return has been accepted the information pertaining to the payment, such as the account information, payment date or amount cannot be changed.
- If changes are needed, the only option is to cancel the payment transaction and choose another.
- To inquire about or cancel a payment wait 7 to 10 days after the return was accepted before calling.
- Scheduled payments can be canceled up to 11:59 p.m. ET two business days before the scheduled payment date. The cancellation must be authorized by the taxpayer.
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