Deal basics · Shopping guide
Coupon Codes vs Automatic Discounts
Some discounts appear on their own; others need a code, a minimum spend or a sign-up. Learn how each type works, how to compare them, and how to avoid checkout surprises.
Online stores reduce prices in two broad ways. An automatic discount is already applied: the sale price on the product page, or a promotion that appears in your cart without you doing anything. A coupon code only applies if you enter it at checkout, and usually comes with conditions.
Knowing the difference saves money and frustration. It explains why one shopper pays less than another for the same item, why a code found online fails at checkout, and how to tell which of two offers is actually better.
The main types of discount
- Sale price: the product's price is reduced for everyone. Nothing to do; this is the simplest and most transparent discount.
- Automatic cart promotion: "buy two, get one free" or "$20 off orders over $100", applied once the cart qualifies.
- Public coupon code: a code anyone can use, shared by the store or by deal sites. Often has an expiry date and exclusions.
- Targeted or single-use code: sent to one customer, for example after an email sign-up, as a birthday reward or to bring back an abandoned cart. Usually cannot be shared.
- Membership or loyalty price: visible only when signed in, or only to paying members.
- Payment or card offers: a discount or statement credit for using a particular card or payment service.
Read the conditions before you count the saving
- Minimum spend: a $20-off code that needs a $100 order is only a saving if you would spend $100 anyway.
- Exclusions: sale items, certain brands, gift cards and new releases are commonly excluded.
- One code per order: most stores accept only one code, and some codes cannot be combined with sale prices.
- Expiry and limits: codes can expire at a specific time zone's midnight or after a set number of uses.
- Account or channel requirements: some codes work only in the app, for new customers, or for a specific email address.
- Returns: if you return part of an order bought with a threshold discount, the refund may be reduced by the discount you no longer qualify for.
Comparing percent-off and dollar-off offers
Percentage discounts scale with your order; fixed-dollar discounts do not. The better one depends on how much you spend.
Code A: 20% off your order. Code B: $15 off orders of $75 or more.
On a $70 order, A saves $14 and B does not apply. On a $75 order, A saves $15 and B saves $15, the same. On a $120 order, A saves $24 and B still saves $15.
If you would need to add a $10 item you do not want to reach B's minimum, that $10 is part of its cost. (Figures are illustrative.)
Stacking: what can combine
Stacking means using several discounts on one order. The most common combination is an automatic sale price plus one coupon code, if the code's terms allow sale items. Combining a store discount with a payment or card offer, or with a cashback program, is often possible because they come from different companies. Two store coupon codes on the same order are rarely allowed.
Why a coupon code fails at checkout
- It has expired, or reached its usage limit.
- It was single-use or tied to another customer's account or email.
- Something in your cart is excluded, or the cart is below the minimum.
- Another promotion is already applied and the code cannot be combined.
- It was never valid: some coupon listings are guesses or out of date.
Be cautious with browser extensions or sites that promise codes for every store. Some codes they surface are genuine; others are expired. A code that does not work is not a loss, but switching stores because of a code you never actually had can be.
Coupons and discounts on OfferNab
When a deal on OfferNab needs a code, the deal says so and shows the code, and we describe a coupon price as conditional rather than as the price everyone pays. Promotions with a minimum purchase show that minimum as a condition. You can browse current codes and promotions on the Coupons page. A store's own terms always decide whether a code applies, so check the cart total before you pay.
Common mistakes to avoid
- Spending more than planned just to reach a coupon's minimum.
- Assuming a sitewide code applies to sale items or every brand.
- Comparing a percent-off code and a dollar-off code without doing the math on your actual cart.
- Expecting two store codes to combine.
- Forgetting that returning part of an order can reduce the refund.
- Choosing a store because of a code you have not confirmed works.
Shopping checklist
Run through this before you buy.
- I know whether the discount is automatic or needs a code.
- My cart meets the minimum spend without adding things I do not want.
- None of my items are excluded, and the code works with sale prices.
- I have compared offers on my real cart total.
- I know what can stack: sale price, one code, card or cashback offers.
- The discount appears in the checkout total before I pay.
Put this guide to work
Compare current online deals and discounts on OfferNab. You always complete your purchase on the retailer's own site.