Quick Answer: Cashback tracking works by recording your click through a partner link and matching it to a confirmed, unreturned order at the retailer, and it only pays out once that match is verified. Ad blockers, a second tracked click, and app checkouts are the most common reasons a purchase never gets matched.
Cashback tracking works by attaching a small tracking reference to your visit when you click through a partner link, then matching that reference to a confirmed order once the retailer reports the sale back. Cashback is only paid once that match is confirmed and the retailer's return window has passed, which is exactly the point where a lot of claims go missing. The mechanism itself is simple, but there are several ordinary places along the way it can quietly break.
What is cashback, and how does the tracking actually work?
Cashback is a share of the commission a retailer pays an affiliate partner for sending them a paying customer, handed on to you instead of being kept entirely by the middleman. When you click a cashback link, the site sets a tracking cookie, or on some retailer apps passes an identifier through the checkout itself.
That reference has to survive from your click all the way to the retailer's confirmation for the sale to be recorded against you. Once the retailer reports the order back to the cashback network with your tracking ID attached, the claim shows as pending, typically for several weeks while the retailer confirms the order was not returned or cancelled.
Card and app-based cashback works a little differently: the card issuer or banking app has a direct relationship with participating retailers and reads the transaction off your statement rather than off a click. That is one reason it tends to track more reliably, even when the rate on offer is lower than a portal's headline figure.
Why does a cashback click sometimes fail to track?
Tracking usually fails because something interrupts the chain between your click and the retailer's confirmation, most often an ad blocker or privacy extension that strips the tracking parameters before the retailer's site ever reads them.
Opening a second tab, running a browser's built-in coupon finder, or clicking a different loyalty or comparison link later in the same session can overwrite your original click, since most retailers only credit the last tracked click before checkout, not the first.
Switching from a browser to the retailer's own app partway through, or finishing the order by phone or in store after browsing online, breaks the chain completely, because the app or till has no way to see the cookie your browser set earlier.
Why doesn't cashback always stack with a voucher code?
Retailers exclude some discounted orders from their affiliate agreement entirely, so if the code you used falls outside the terms set for that particular cashback network, the network is never even told the sale happened, code or no code.
This is not the cashback site being difficult with you; it is the retailer choosing, in its own terms, whether a discounted order still counts toward the commission pool that funds both the code and the cashback. Sale items, gift cards, and anything already reduced are commonly excluded outright.
The practical result is you can lose the cashback and keep the discount, keep the cashback and skip the code, or occasionally get both. The only reliable way to know which applies is to check that specific retailer's cashback terms before you check out, not after, since stacking codes with other offers works differently store by store.
How is portal cashback different from a card or app cashback offer?
Both pay you a share of a purchase after the fact, but they differ in who confirms the sale, how long that takes, and how likely the payout is to actually land in your account.
| Type | Who confirms the sale | Typical wait | Stacks with a code |
|---|---|---|---|
| Cashback portal | Retailer reports back to the network | Weeks to a few months | Depends on the retailer's terms |
| Card or app cashback | Read directly off your statement | Usually faster, set by the issuer | Usually yes, since it is not tied to affiliate terms |
| Retailer's own loyalty scheme | Retailer's own account system | Often instant to a few days | Varies, check the scheme's own rules |
What should you do if a purchase never tracks?
A missed tracking event is common enough that every serious cashback network has a process for it. Work through it in order rather than repeating the purchase and hoping the second attempt tracks instead.
- Take a screenshot of your order confirmation, including the date, retailer, and order total, straight after checkout.
- Check your cashback account for a pending or missing-click record before assuming nothing was captured at all.
- Use the network's own missing cashback claim form rather than emailing support directly, since the form routes the case to the retailer with the right reference.
- Attach the order confirmation and, if you have it, a screenshot showing you clicked through the tracked link before buying.
- Give the retailer's stated response window time to run before chasing again, since most claims are investigated on the retailer's own schedule, not the network's.
- If the claim is declined without explanation, ask the network directly why, rather than accepting a blanket "not tracked" response.
Is chasing cashback worth the effort on a small order?
On a low-value order, a missing cashback claim is usually a percentage of a small number, and the time spent gathering screenshots and filling in a claim form can outweigh what is actually at stake.
It is generally worth the effort when the order is large, when the cashback rate was unusually high for that retailer, or when several missing claims have built up across a few orders, since networks often let you batch evidence into one dispute.
For everyday, lower-value shopping, treating cashback as a bonus on top of a genuine saving, rather than the main reason to choose a retailer, keeps the maths sensible either way.
What should you check before you trust a cashback offer?
The honest objection to cashback is the delay and the uncertainty: you cannot be sure the money is coming until weeks after you have already paid full price at checkout, and a certain code-based discount today can feel more trustworthy than an uncertain percentage later.
That objection is fair, and the answer is not to pretend cashback is guaranteed. Read the specific retailer's exclusions before you buy, keep your evidence in case a claim needs chasing, and treat the payout as a bonus rather than something you have already budgeted to receive.
Checking a retailer's current voucher codes and live deal listings before you check out settles at least half of that uncertainty up front, since a stacking conflict shows up there rather than after the order has already gone through.
Where to check today's live vouchers and deals
Before you rely on a cashback offer for a specific purchase, look up the retailer on the stores page to see its current codes and deal terms in one place, or browse money-saving guides by category if you are comparing more than one option. Checking the terms first, rather than after a claim goes missing, is the one habit that actually protects the saving you are counting on.
For related reading on getting the most out of a checkout, see the wider ArekNet blog, and if a retailer never explains why a tracked claim was declined, Citizens Advice's guidance on problems with an online purchase is a reasonable next step.
Frequently asked questions
Does cashback stack with a voucher code?
Sometimes, but not always. Retailers choose in their own affiliate terms whether a discounted order still counts toward cashback, and sale items or already-reduced products are commonly excluded outright. Check the specific retailer's terms before checkout rather than assuming both will apply.
How long does cashback take to pay out?
It typically sits as pending for several weeks while the retailer confirms the order was not returned or cancelled, though the exact wait varies by retailer and network. Card or app-based cashback, which reads your statement directly, is usually faster than portal cashback.
Why did my cashback show as pending and then disappear?
A pending claim can be declined if the order was returned, part-cancelled, or if the retailer decides the sale fell outside its affiliate terms after review. If this happens without explanation, use the network's missing cashback form and ask the retailer directly why the claim was declined.
Can an ad blocker stop cashback from tracking?
Yes. Ad blockers and privacy extensions often strip the tracking parameters from a cashback link before the retailer's site can read them, which means the click is never recorded. Pausing the extension for that one purchase, or using the network's official browser extension, usually avoids the problem.
Is card cashback better than a cashback portal?
It depends what you value. Card and app cashback tends to track more reliably because it reads your statement directly rather than relying on a click surviving your whole session, but portal cashback often offers a higher headline percentage on specific retailers.
What should I do if a cashback claim never tracks at all?
Screenshot your order confirmation straight after checkout, check your account for a pending or missing-click record, then use the network's official missing cashback claim form with that evidence attached rather than repeating the purchase and hoping it tracks the second time.