Financial Form Validation Audit

finserv-form-validation · v1.1.0 · paid

Evaluates currency and amount input validation, account number format enforcement, calculation accuracy, rounding rules, and financial math edge cases.

Currency & Amount Validation

currency-amount · weight 0.3

Currency inputs reject negative values at validation layer
ab-001437
critical
Decimal amounts stored as integers (cents), never floats
ab-001438
critical
Banker's rounding (round-half-to-even) for interest calculations
ab-001439
high
Currency conversions server-side, locked at transaction time
ab-001440
high
Routing number ABA check digit validated
ab-001441
high
No cumulative floating-point errors in multi-step transactions
ab-001442
high

Account & Routing Formats

account-routing · weight 0.25

Account number format validated per region (IBAN/ABA)
ab-001443
high
Invalid IBAN structure rejected before submission
ab-001444
medium
Max amount limits enforced at submission
ab-001445
medium
Min transaction amount enforced with clear error
ab-001446
medium
Crypto address checksum validation where applicable
ab-001447
low

Calculation Accuracy

calculation-accuracy · weight 0.25

Client-side validation matches server-side
ab-001448
low
Tax/fee calculations pre-filled with server verification
ab-001449
low
Interest/APY rounded consistently
ab-001450
low
Percentage inputs reject unrealistic range
ab-001451
low
Calculated totals recalculated server-side
ab-001452
info

Error Handling & Edge Cases

error-edge-cases · weight 0.2

inputmode="decimal"/"numeric" used appropriately
ab-001453
low
Duplicate submissions prevented via idempotency token
ab-001454
medium
Error messages specify exact requirement
ab-001455
info
Calculation logic unit-tested with edge cases
ab-001456
info