Greyhaven Intelligence
Research on payment infrastructure.
Analysis drawn from underwriting files, migrations and optimization work — written for founders, CFOs and payments operators making infrastructure decisions.
The High-Risk Acquiring Landscape
How acquirers, ISOs, sponsor banks and gateways divide responsibility — and where merchant leverage actually sits.
Building a Multi-Acquirer Payments Strategy
What it takes to run two or more live acquiring relationships without fragmenting reporting, risk or reconciliation.
The Real Cost of Rolling Reserves
Modelling reserve percentage, hold period and release schedule as a cost of capital rather than a line item.
Why Merchants Should Monitor Acquirer Concentration Risk
Single-provider dependency is the most common structural risk we see in businesses above eight figures of volume.
Understanding MATCH and Merchant Underwriting
How listings arise, what they constrain, and how underwriting files are read from the risk officer's side of the table.
Approval Rates: What Merchants Should Actually Measure
Gross authorization rate hides more than it reveals. The useful measures are segmented by issuer, method and retry.
Domestic vs. International Acquiring
Where local acquiring earns its complexity, and where cross-border settlement quietly costs approval rate.
How High-Growth Merchants Should Think About Payment Redundancy
Designing failover before it is needed: warm secondary MIDs, routing rules and the first seventy-two hours.