Cash back and coupons both promise savings, but they work in completely different ways. One lowers the price you pay today; the other returns a percentage later. On AliExpress and DHgate the difference matters more than usual, because coupons there can be unusually generous.
How each one works
Coupons and promo codes reduce the price at checkout. On AliExpress that means store coupons from each seller plus one sitewide promo code; on DHgate, one monthly promo code or the store coupon and DHcoupon DHgate applies for you.
Cash back doesn't change the price. You activate a cash back service before shopping, the store pays the service a commission, and the service passes part of it to you, usually weeks later and often only after you reach a minimum balance.
The math on a typical order
Take a US $120 order on DHgate. In November 2026, DHgate's monthly codes included US $12 off US $120, and Rakuten listed 2% cash back on DHgate.
| Coupon | Cash back (2%) | |
|---|---|---|
| Price at checkout | US $108 | US $120 |
| Money back later | none | US $2.40 |
| Effective cost | US $108 | US $117.60 |
| When you get it | Immediately | Weeks later |
On this order the coupon saves four times as much. Percentage cash back only catches up on very large orders, or during promotions when cash back rates are temporarily boosted.
Where cash back wins
Cash back isn't a bad deal. It shines when:
- there's no good coupon, for example between AliExpress sales when no sitewide code exists;
- rates are boosted. Cash back services occasionally run much higher rates for a day or two during big sales;
- the order is large and percentage returns add up.
You don't always have to choose
Cash back and coupons don't automatically cancel each other out. Whether you get both depends on the cash back service's terms, and many exclude orders that used codes not published by the store or by the service itself. Read the terms before counting on both.
If you use both:
- Activate cash back first, then shop.
- Apply coupons at checkout.
- Don't run several affiliate-based extensions at once: the store credits whichever referral came last, which can stop your cash back from tracking. It won't change your price either way.
Our take
On AliExpress and DHgate, coupons usually save more, and immediately. That's why we built AutoAli and DHgate Auto Coupon as free coupon tools rather than cash back services. They apply the best coupons at checkout and only keep a code if your total goes down. If you also like cash back, a service such as Rakuten can add a little on top. Just check its terms first.
See this month's DHgate coupon codes and how to find AliExpress coupons.