Spreadsheet Failure ModeManual Workflow
Root Operational Bottleneck
Trade FX conversions are booked from the bank's statement rate typed into a settlement tracker, so the spread versus the wholesale mid is never measured.
Control Hazard & Audit Exposure
Hidden 120 bps bank FX conversion spreads erode international deal margins because the booked rate is not compared to an independent mid.
Deterministic Software ReplacementClient-Owned Architecture
Wholesale FX Gateway with Real-Time Conversion Spread Transparency Monitor
Wholesale FX gateway that captures the mid and the executed rate on each conversion and posts the spread as a visible treasury cost, not a buried invoice difference.
Continuous Assertion Rule
Spread assertion: a conversion cannot post unless it stores the mid, the executed rate, and the basis-point spread, and a spread above the policy cap is flagged before settlement.