A voided check is a check that can no longer be accepted as payment from anyone. It has the word “VOID” written across it and therefore is not a blank check either. A voided check will still have your account details on it but it cannot be used to process any payment.
The most common reason to send a voided check is to share your account details with an employer. If you recently changed jobs or bank accounts, for example, your employer will want your account information and may ask for a voided check.