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Field Notes·8 min read·March 12, 2026

The Vendor Cost Review You Should Run Every Quarter

Why the annual renewal panic is the most expensive cadence in payments — and the operating rhythm that replaces it.

SC
SideB Consulting Studio

Most payments cost reviews happen once a year, two weeks before contract renewal. By that point your interchange++, processor markups, cross-border fees and scheme pass-throughs have already drifted 8-12% off the contract you originally signed — and you have almost no leverage to claw it back without threatening a switch.

The operators we work with run a structured cost review every quarter. It takes a senior analyst about a day if the data is clean (and it almost never is, the first time). The deliverable is a single sheet: line-by-line variance vs. contract, exception flags on scheme-fee changes, and a renegotiation memo with three to five surgical asks.

We've never run this exercise and come back empty. The thing the quarterly cadence buys you isn't the savings — it's the credibility. Your processor knows you're watching, and the price drift stops happening between reviews.

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