Post-dated checks are perfectly legal. If they weren't, “pay day” lenders, and other crude forms of credit, couldn't exist. Only “properly payable” checks are supposed to be cashed by banks. But just about anything with the right signature on it is properly payable, including post-dated and overdrawn checks.

Will a bank accept a post-dated check?

Can a bank or credit union cash a post-dated check before the date on the check? Yes. Banks and credit unions generally don't have to wait until the date you put on a check to cash it. However, state law may require the bank or credit union to wait to cash the check if you give it reasonable notice.

How long can a check be post-dated?

As previously mentioned, personal checks are usually valid for up to six months after the date they were issued,1 but you shouldn't count on the bank to pay attention to the dates. A money order issuer may charge fees on the order if enough time passes. Check with your issuer for guidelines.