Open JSON Schema Released to Standardize Payment Processing Statement Audits

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A processor-neutral audit toolkit has been released to help merchants accurately compare and analyze card payment processing statements, which often use inconsistent labels and pricing structures. The kit includes a JSON Schema Draft 2020-12 contract, a CSV comparison template, a synthetic example, and a standardized fee taxonomy grouping charges by economic role. Its core metric is the effective rate — total processing fees divided by total card volume — stored as a decimal to avoid ambiguity in calculations. The schema supports multiple pricing models, including interchange-plus, flat-rate, and tiered, and uses an 'unknown' classification to avoid incorrect guessing. Files are publicly available in the Lifted Holdings payment-processing-resources repository and at liftedpayments.com/payment-processing-statement-audit.

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