Can a Check Be Endorsed Twice?

A check in the name of one person, yet cashed or deposited into the account of another, double endorsed checks can be used for various fraudulent schemes that generally don't end well for either the bank or the holder of the original checking account.

Can you cash a check that's already been endorsed?

Don't endorse a check with just your signature and no further instructions until you're ready to cash or deposit it. A check that's endorsed this way becomes negotiable, which means it can be cashed or deposited by anyone who presents it to the bank, even if that person isn't the payee.

What if I accidentally endorsed a check?

The simplest thing to do is to strike out the endorsement with a line or two through it, and then directly under the erroneous endorsement write "endorsed in error" and then your initials beside that notation. Leave your signature readable though.