American Express is known for having some of the best benefits for its customers, particularly for people who use its high-end credit cards. You don't have to be a big spender for one of its best perks, however. American Express Offers is a rebate program whereby participating card members can sign up for rebates on purchases they make with their American Express credit or charge card.

How American Express Offers Works
Log in to your American Express account online and at the bottom of the page you'll find a section titled "Amex Offers & Benefits." At the time of writing, my account had 56 different offers to choose from, as you can see from the image below. (You may see a different number of offers as some are targeted based on your past spending patterns.)

Generally, the offers are rebates for purchases made online and in-store. I clicked on an offer from Allen Edmonds, a men's clothing and shoe store. According to the terms of the offer, I'll receive a $50 credit to my American Express statement if I sign up for this offer and spend $200 or more in-store or online at Allen Edmonds by Sept. 20, 2015.

To sign up, all you have to do is click "Add to Card." You don't have to keep track of receipts or fill out any rebate forms. Qualifying purchases are automatically tracked by American Express.

Not all offers require hefty spending, as the participating stores run the gamut from high-end retailers to low-cost discount stores. Another offer from Dollar General provides for a one-time, $5 statement credit by spending $25 at its stores by Aug. 31, 2015.

For a brief time, Home Depot also had an open offer for a $15 statement credit when cardholders spent $75 or more in-store or online. An offer for Whole Foods provided a $10 statement credit when cardholders spent $75 or more in store.

A few pieces of advice
Most offers seem to have some sort of participation cap. Once enough cardholders have enrolled, offers are removed from the website. The Home Depot and Whole Foods offers were available only for a brief time before they were closed to new members. To get the most out of the program, you'll want to check in frequently, or follow the program's dedicated social media accounts to find out about new offers as they are added to the site.

Pay attention to the terms and conditions of each offer. Some require you to spend a certain amount in-store or online, while others only count specifically online or offline purchases. Some will combine purchases made during the offering period (two $75 transactions would meet a $150 minimum spending requirement, for example) while others require you to spend a certain amount in a single transaction.

Finally, take note that American Express will generally credit your account within 90 days of the close of the offering period. Thus, the statement credit will likely appear several billing cycles after the charge for your purchase is added to your account. If you don't pay your bill in full, interest will accrue on your balances. Do not assume that the statement credit for the offer will appear before a payment is due, and make sure you can always pay your bill in full, with or without the statement credit.