Commission Engine

The commission engine is the calculation core of any affiliate or IB platform. It takes the conversions that have been attributed by the tracking layer, applies the relevant commission rules, and produces the earnings figures that show up in the partner portal and finance system. Inputs typically include the deal structure (such as CPA, revshare, hybrid, tiered, or lot-based), the underlying conversion event, the partner's contract, and any program-wide overrides. Outputs are commission line items that are immutable once finalized but can be reversed through documented adjustments.

A well-designed engine handles several mechanics that are easy to get wrong. Rule precedence determines which deal applies when more than one is eligible, for example when a partner has both a default revshare and a campaign-specific CPA bonus. Qualification rules determine when a commission becomes payable, often gating CPA on minimum trading volume, deposit value, or wagering thresholds. Commission holds and rolling reserves delay payout until risk windows close. Multi-tier commission logic spreads earnings across master and sub-partners. Retroactive adjustments support chargebacks, refunds, and revenue true-ups without breaking historical reports.

Pitfalls cluster around dispute resolution, performance, and auditability. If the engine cannot show partners exactly which events fed each commission, disputes become time-consuming and erode trust. If recalculations are not deterministic, finance reconciliation breaks. High-volume programs need the engine to scale with conversion throughput while preserving exact replays for compliance. Mature engines version their rules, log every input that drove a calculation, and expose calculation trails through the partner portal so that finance, compliance, and partners can each verify the numbers against their own systems.