Once you reserve a PO Box at the Post Office location, link it to your USPS.com account. You can manage it online instead of the Post Office location. Link a PO Box to an USPS.com Account
Quick Answer. Cashier's checks themselves do not expire as personal checks do. However, the funds behind the check are subject to state escheat laws.
Wavebreakmedia Ltd/Wavebreak Media/Getty Images. You can still get the money owed to you even if a check has expired. To be courteous, alert individuals and businesses when you plan to cash an expired check. If the check is more than 6 months old or has a void date, ask for a replacement.Your bank may still honor an expired check, and the state may have a record of unclaimed funds for your check.hen you can't get an old check reissued, see what your bank can do. According to Bankrate, banks sometimes cash checks older than 6 months even though they are not required to do so. If the bank believes the check is valid and that the payer has the funds to cover the check, the bank may cash it.