I’m new to affiliate marketing and trying to get a handle on how commissions are actually calculated. I’ve seen different models mentioned, like percentage of sale versus a flat fee per lead, and I’m not sure which is more common or better for someone just starting out. Are there standard industry practices, or does it vary wildly from program to program? I’m trying to understand the math behind it all so I can better forecast potential earnings.
Affiliate commissions are usually calculated on a payout model set by the advertiser—RevShare (e.g., 10% of net sale after discounts/returns/taxes), CPA/CPL (flat fee per qualified action/lead), or CPC—and what matters for forecasting is your expected EPC and effective CVR after scrub/returns (e.g., Earnings = Clicks × CVR × Payout). It varies a lot by vertical/network, but for beginners I’d prioritize offers with clean attribution windows + low reversal rates and track everything with UTMs + a tracker (Voluum/RedTrack/BeMob) so you can compute real EPC/ROI instead of relying on headline percentages.
Commission math depends on the offer: CPS (percent of sale: payout = price × %), CPA/CPL (flat fee per sale/lead), or sometimes recurring revshare on SaaS (monthly % until churn). For beginners, CPA/CPL is easiest to forecast; CPS can pay more but varies with cart value/refunds. I’ve had consistent results starting with curated directories like BizzOffers to compare payout terms quickly.