What you’ll learn
- Which metrics actually predict income — EPC, revenue per visitor, conversion rate
- How to track affiliate clicks and revenue reliably
- Attribution beyond last-click, so the right pages get credit
- Privacy-first measurement that survives consent banners and ad blockers
Featured
Postback vs API: How Affiliate Conversion Tracking Really WorksServer-side affiliate tracking comes in two flavours — postback (the network pushes each sale to you) and API (you pull them on a schedule). Here's how each works, how to set them up on Impact, and which to choose — with the code.Affiliate Attribution Models Explained (and Why You Don't Get to Pick One)Last-click, first-click, linear, time-decay, data-driven — attribution models decide which affiliate gets paid when a buyer clicks several links. But as an affiliate you rarely choose the model; the network does, and it's almost always last-click. Here's what that means and how to play it.Do Affiliate Sites Need a Cookie Banner? (2026)Whether your affiliate site needs a cookie consent banner depends on your cookies, not your affiliate links. Here's what the law actually requires in 2026 — ePrivacy, GDPR, UK PECR, and US state laws — when you need a banner, when you might not, and how cookieless analytics changes the answer. Not legal advice.Privacy-First Analytics vs Google Analytics: The Switch Isn't the Trade-Off You ThinkEveryone assumes leaving Google Analytics for privacy-first analytics means giving up data. For content and affiliate publishers, it's often the opposite — GA4 undercounts by 15–40% from ad blockers and consent rejection, while cookieless tools capture nearly everyone. Here's the honest head-to-head, and who should actually stay on GA4.Recurring Commissions and LTV: Why EPC Undercounts Subscription ProgramsEPC is the master affiliate metric — but it has a blind spot. For recurring and subscription programs, a single click keeps paying for months, and EPC computed on the first commission badly undercounts it. Here's the LTV-per-click math, the churn caveat, and how it changes which programs you should promote.Revenue Per Visitor: The Metric That Ranks Your Traffic SourcesEPC tells you how well a click converts; revenue per visitor (RPV) tells you what a whole visit is worth. Because RPV = affiliate CTR × EPC, it captures the full visitor-to-commission funnel — making it the right metric for ranking pages and traffic sources, where EPC alone misleads. Here's how to use both.Affiliate Analytics: The Complete Guide (Beyond Pageviews)Most affiliate 'analytics' is just Google Analytics — traffic, not revenue. Learn the affiliate analytics stack, the questions your data should answer, and how to measure what actually earns.Cookieless Analytics for Affiliates: Why the Cookie Banner Is Costing YouCookieless analytics tracks visitors without cookies or consent banners. For affiliate sites — where declined visitors break your attribution — it isn't a compromise, it's an upgrade. Here's how it works.Affiliate Revenue Attribution Explained (When the Network Won't Tell You)Affiliate attribution isn't about first-click vs last-click models — it's about bridging the gap between tag-level earnings and page-level content. Here's the practical method, with a calculator.What Is EPC (Earnings Per Click)? A Complete Guide for AffiliatesEPC — earnings per click — is the single number that tells you what an affiliate click is actually worth. Learn how to calculate it, what a good EPC looks like, and how to improve it.
More guides
Clicks Are Up But Earnings Are Flat: A DiagnosticMore clicks, same earnings — the most disheartening dashboard in affiliate marketing. It splits into two families of cause: measurement problems (the clicks aren't real earning-clicks) and value problems (real clicks worth less). Check measurement first, because no amount of conversion tuning fixes a broken tag. Here's the full diagnostic.Google Analytics' Limitations for Affiliate Sites (2026)GA4 is a capable on-site analytics tool — but affiliate revenue is earned off-site, so the one number that matters (what a click earns) is structurally invisible to it. Add the 30-event cap, attribution thresholds that dump 98% of affiliate paths into 'direct,' and thresholding that hides your niche rows, and GA4 alone leaves affiliates blind. Here's the honest breakdown.GDPR for Affiliate Marketers (Plain English, 2026)GDPR feels overwhelming for a solo affiliate, but the highest-leverage move is simple: collect less data. Here's what GDPR actually requires of a niche-site owner in 2026 — lawful basis, data subject rights, DPAs, the GA4/EU-transfer situation — in plain English. Not legal advice.How to Improve Your EPC: The Levers That Actually Move ItEPC = conversion rate × value per conversion, so 'improve my EPC' is really two questions: are clicks converting, and is each conversion worth enough? Here are the levers for each half, why chasing high commission percentages backfires, and why you need per-page EPC to know which lever to pull.What Counts as Personal Data in Web Analytics? (2026)Most publishers think 'personal data' means names and emails. Under GDPR it's far broader — IP addresses, cookie IDs, device fingerprints, even hashed identifiers count, because they can single out one person. Here's the real line for web analytics, why pseudonymous isn't anonymous, and where cookieless tools sit. Not legal advice.Do Affiliates Need Real-Time Analytics? (An Honest Answer)Every analytics tool sells real-time as a headline feature. For affiliate earnings it's mostly vanity — your commissions don't settle for weeks, so a live ticker just shows you noise. But real-time genuinely matters for one job: detection. Here's when to watch live data, and when to ignore it and wait for settled numbers.Server-Side Affiliate Tracking: What It Solves (and What It Doesn't)Server-side tracking recovers the 20–50% of click data ad blockers strip out — a real win for accurate affiliate measurement. But it's oversold: it doesn't make you consent-free, doesn't close the off-site revenue gap, and isn't cheap or simple. Here's the honest breakdown, and why cookieless first-party analytics gets most affiliates the main benefit without the build.The Visitor Behavior Metrics That Actually Predict Affiliate RevenueBounce rate, time on site, pages per session — the metrics general analytics obsesses over are mostly vanity for affiliate sites. Here are the behavior signals that actually predict earnings, and how to read them to fix a low-EPC page.How to Track Affiliate Links: Every Method Compared (2026)GA4 events, WordPress plugins, network tracking IDs, or a dedicated tool? Compare every way to track affiliate links — ranked by how far each gets you toward knowing what actually earns.
Frequently asked questions
What analytics does an affiliate site actually need?
Click tracking that captures the source page and context, plus the revenue metrics (EPC, RPV) that show which pages earn. Pageviews alone don't tell you what a visit is worth.
Can I measure well without cookies?
Yes. First-party, cookieless tracking captures clicks and revenue without consent-banner drop-off, and for affiliate sites it's usually more complete than a consent-gated Google Analytics setup.
Where should I start?
With EPC and revenue per visitor — they fold conversion rate and commission value into single numbers you can compare across pages, offers, and placements.