Engineering

Architecting a Compliant IB Commission Engine on MT5

Multi-tier IB structures, rebate models and the audit trail decisions that decide whether your engine survives a regulator review.

atombit team · 7 min read · 25 May 2026

The non-obvious risk

IB engines fail audits not because the math is wrong, but because the state machine is unclear. Every rebate must trace to a trade, a tier, a date, and a settlement event.

What we ship

Tier definitions versioned as immutable rows
Rebate accruals stored separately from settlements
Settlement runs as auditable transactions, not scripts
A reporting layer that any compliance officer can read