Money orders are safe alternatives to cash, and filling them out correctly is key to avoid payments getting canceled or refunded. Fill in the recipient and your address; for bills, include an account number; sign it; keep proof of payment.Many credit card companies will charge extra fees on purchases of money orders. Pay with cash or debit card to avoid those fees. 2. A money order is a secure form of payment that can be used as an alternative to cash, a personal check, a cashier's check or a credit card. Demand, the amount of the refund if the designated payee, purchaser, or financial institution cashes the original money order. Places where you can buy money orders for a small fee include post offices, banks and grocery stores. Money orders are safe and easy to buy or cash at U.S. banks, credit unions, post offices, retailers, grocers, and convenience stores. Thank you for your continued interest to operate your business in Palm Beach County. You'll see a line for the purchaser's signature, usually on the front of the money order near the bottom.