If you already e-filed, it is too late to add or change banking information. You had to do that before you e-filed. If nothing was entered about banking information, it will default to a check mailed to the address on your tax return.
REVIEW REFUND METHOD
https://ttlc.intuit.com/community/refunds/help/how-do-i-review-the-federal-refund-method-i-chose-aft...
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