Does Alliant offer Cashier’s checks? Alliant offers an "Official Credit Union Check" that functions the same as a cashier's check. You can request an Official Credit Union Check through online banking or by calling us at 800-328-1935. Funds are deducted from your account at the time the Official Credit Union check is issued. There is no fee for the issuance of an Alliant Official Credit Union check unless you request that the check mailing be expedited, in which case you will be charged for express shipping.