What are the main affiliate attribution models?

Last-click gives 100% of the commission to the final affiliate touch before purchase — it's the default on most networks. First-click gives it all to the affiliate who started the journey. Linear splits credit evenly across every touch, time-decay weights recent touches more heavily, position-based rewards the first and last touches most, and data-driven attribution uses your own conversion data to assign fractional credit algorithmically. Each answers the same question — who gets paid when there were several clicks — differently.

Can I choose my attribution model as an affiliate?

Almost never. The program or network sets the model, and the overwhelming default is last-click. As a publisher your lever isn't the model — it's where in the buyer journey you sit. Since last-click pays, owning the final, buyer-intent touch (reviews, comparisons, 'best X' pages) matters more than only creating awareness content that a later click will get paid for.

What is last-click hijacking?

It's the well-known flaw in last-click attribution: coupon and deal sites intercept buyers who are already in the purchase flow, overwrite the original affiliate's tracking cookie, and claim credit for a sale they didn't influence. The content affiliate who actually started the journey gets nothing. It's why last-click is simultaneously the industry default and the most criticised model — and why owning the last click, or watching your programs for hijacking, matters.

Affiliate Attribution Models Explained (and Why You Don't Get to Pick One)

Q: Is attribution the same as cookie duration?

No, and confusing them is a common mistake. The cookie window decides how long after a click an affiliate can still earn credit; the attribution model decides which affiliate gets that credit when a buyer clicked several links. A program can have a 90-day cookie and still run last-click attribution — the long window just means the last click can happen up to 90 days out. Amazon's 24-hour cookie, for example, still resolves under last-click.

Attribution is how a program decides which affiliate gets paid when a buyer clicked several affiliate links before buying. Most guides on it are written for program managers choosing a model. This one isn't — because as an affiliate, you almost never get to choose. The network picks the model, it's nearly always last-click, and that fact should shape your strategy more than any of the models themselves.

First: attribution is not your cookie window

These get conflated constantly. Your cookie window decides how long after a click you can still earn credit. The attribution model decides which affiliate gets that credit when there were multiple clicks. They're independent: a program can run a 90-day cookie and last-click attribution at the same time — the long window just means the final click can land months later. Amazon's 24-hour cookie still resolves under last-click. Keep them separate in your head or you'll misread how you're actually paid.

The models, quickly

Attribution decides which affiliate gets paid when a buyer clicks several links. Under last-click — the default on most networks — the coupon site that intercepted the buyer at checkout takes 100%, even though the blog review started the journey. As an affiliate you rarely pick the model; you pick where in the journey you sit.

Last-click — 100% to the final touch before purchase. The default on most networks because it's unambiguous: there's always exactly one last click.
First-click — 100% to the affiliate who started the journey. Rewards awareness and educational content; discourages coupon hijacking.
Linear — credit split evenly across every touch.
Time-decay — more credit to recent touches, less to early ones.
Position-based (U-shaped) — heavy weight on the first and last touch, the rest shared.
Data-driven — algorithmic fractional credit based on your actual paths to purchase. Reportedly used by a majority of advanced programs now, but it needs volume and infrastructure.

What last-click actually means for you

Since you're almost certainly on last-click, two consequences follow — and they matter more than memorising the model list.

You're exposed to last-click hijacking. Coupon and deal sites intercept buyers already heading to checkout, overwrite the original affiliate's cookie, and take the commission for a sale they didn't influence. The blog review that started the journey gets nothing. This is the single most important thing for a content affiliate to understand about attribution.

Your assists are invisible. If your awareness content seeds a purchase but someone else takes the last click, last-click pays you zero for the influence. The model that runs your payout doesn't see the journey — only its final step.

The strategy: own the last click

You can't change the model, so play it. Since last-click pays, the goal is to be the final, buyer-intent touch, not only the top-of-funnel awareness one. That's the whole case for money pages — the reviews and comparisons that catch buyers at the decision moment, when the next click is the purchase. Awareness content still matters for reach and topical authority, but under last-click it's the bottom-of-funnel page that gets paid. Where a coupon site is hijacking your programs, some networks let you flag it or request manual reassignment — worth doing on your best sales.

The two-layer insight

Here's the part most affiliates miss. There are two attributions in your world, and they answer different questions:

The network's model decides how you get paid — usually last-click, not your choice.
Your own first-party analytics decides how you invest — which of your pages and content actually drove the sale.

Don't let the first dictate the second. The network paying you on last-click doesn't mean the last-click page is the only one worth building — your first-party measurement can show that a comparison page converts while a review page seeds the intent, so you fund both correctly. The network's model sets your cheque; your analytics sets your roadmap. Optimise EPC on your own pages with your own data, and treat the network's model as a payout rule to play around, not a verdict on what's working.

The 2026 shift worth watching

The ground is moving. With third-party cookies collapsing — high opt-out rates, widespread ad blockers, and an estimated 30–40% of conversions going untracked and unpaid — the industry is drifting from last-click toward multi-touch and data-driven models built on first-party and server-side data. Programs that have adopted multi-touch attribution report meaningfully higher attributed revenue, and some are finally crediting the assist touches last-click ignored. For you that means two things: first-party, server-side tracking is becoming table stakes, and programs that credit assists are worth seeking out if awareness content is your strength.

Attribute sales to the right pages: Clickolytics ties clicks to the revenue they produced across your own site — so you see which pages seed and which close, whatever model the network pays you on. See how it works →

Frequently asked questions

What are the main models? Last-click (final touch, network default), first-click (first touch), linear (even split), time-decay (recent-weighted), position-based (first + last), and data-driven (algorithmic). They differ in who gets paid when there were multiple clicks.

Is attribution the same as cookie duration? No — cookie window is how long credit lasts; attribution is which affiliate gets it. A 90-day cookie can still run last-click.

Can I choose the model? Rarely — the network does, and it's usually last-click. Your lever is where you sit in the journey, so own the last, buyer-intent click.

What's last-click hijacking? Coupon/deal sites overwrite your cookie at checkout and claim a sale they didn't influence — the flaw that makes last-click both the default and the most criticised model.