个人支票一般是180天, 超过了银行可以拒付 支票还是应该及时去兑现,不然一段时间后写支票的人说不定都忘记保持一定数目的钱 在帐户里了 Uniform Commercial Code: § 4-404. BANK NOT OBLIGED TO PAY CHECK MORE THAN SIX MONTHS OLD. A bank is under no obligation to a customer having a checking account to pay a check, other than a certified check, which is presented more than six months after its date, but it may charge its customer's account for a payment made thereafter in good faith. Source: http://www.law.cornell.edu/ucc/4/article4.htm#s4-404