Banking
Calculation Remediation Under Regulatory Attention
A credit-card interest error across customer balances, under active regulatory attention.
Illustrative engagement
The engagement
Where the decision had to hold under scrutiny
A credit card interest calculation was producing errors across customer balances, creating financial and regulatory risk at scale. The issue drew regulatory attention and required changes to the underlying approach. Illustrative work covers calculation accuracy, control design, and output validation, including assurance tooling and close work with compliance and legal teams. This helps build a defensible record around the calculation and supports remediation under scrutiny.
Key challenges
The problem, and what was done about it
Challenge 01
A credit-card interest calculation was producing errors across customer balances at scale, and the issue had drawn regulatory attention that demanded changes to the underlying approach.
What was done
Corrected the calculation approach, designed controls around it, and built assurance tooling to validate outputs — proving accuracy rather than asserting it.
Challenge 02
Under scrutiny, the correction itself had to be defensible — compliance and legal needed a record they could stand behind.
What was done
Worked closely with compliance and legal to certify the corrected logic and lock an evidenced record of the fix, so the remediation could withstand challenge.
Illustrative — reconstructed from the engagement context
How Verdica makes it defensible
The same five stages, applied to this decision
Every engagement runs the same path. For this one, the weight falls on Reason, Assure, Certify — the stages where a decision of this kind is most often challenged.
Trace
Map every point where the decision could be challenged — before a line of logic is written.
Reason
Build the logic in the open: explainable, deterministic, same input, same output — no black box.
Assure
Validate coverage and oversight before anything ships; nothing unassessed is waved through as safe.
Certify
Lock an immutable, versioned record of exactly what was decided and on what basis.
Evidence
Hand over the audit trail — the pack that holds the moment someone says prove it.
Related engagements
The same standard, holding elsewhere
Discuss a related situation
A decision like this can be made defensible — on the record, not after the fact
A short discussion is usually enough to locate where the risk sits — in the logic, the controls, the evidence, or a combination — and where Verdica makes it hold.