Velocity Checks and Rate Limiting: First Lines of Fraud Defence

Simple velocity rules catch most opportunistic fraud. Here's how to configure them without blocking good transactions.

The chargeback process was designed to protect consumers, but it has become a significant source of revenue leakage for merchants. Building a robust dispute management programme — with clear policies, strong evidence packages, and timely responses — is essential for any business processing significant card volume.

Key Considerations for Implementation

Before rolling out any new payment capability, it is worth investing time in a thorough discovery phase. Mapping your current state, identifying integration dependencies, and defining clear success metrics will save significant rework downstream. The businesses that skip this step often find themselves revisiting the same problems six months later.

The regulatory environment for payments in Canada is becoming more complex, not less. OSFI, FINTRAC, the Bank of Canada, and provincial regulators each have a piece of the puzzle. Building a compliance calendar that tracks all relevant deadlines is no longer optional.

The Regulatory Dimension

Any significant change to your payment infrastructure needs to be evaluated through a compliance lens from the outset. Engaging your legal and compliance teams early — rather than treating them as a final gate — reduces the risk of costly rework and ensures that your implementation meets all applicable requirements.

Small and medium-sized enterprises are the backbone of the Canadian economy, yet they frequently pay the highest effective rates for payment processing. Understanding interchange categories, negotiating acquirer fees, and routing intelligently can materially improve margins.