Federal income tax direct debit payments can be canceled up to 48 hours (midnight, Eastern time) before the date you designated the funds to be debited. To cancel your direct debit transaction, call (888) 353-4537 also see Cancellation, Errors, and Question in this link for more information: IRS Electronic Funds Withdrawal
You can fill out Form 9465 online on the IRS website if you have already e-filed.
See this TurboTax article for additional information.
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