Regulation E Error Resolution and Liability Calculator
Updated 04/01/2026
This calculator can be used to determine consumer liability under Regulation E and to check error resolution timing requirements.
Rule: 12 CFR Part 1005 – Electronic Fund Transfers (Regulation E)
Toolkit: Regulation E
Keywords: Regulation E, Reg E, Unauthorized EFT, Debit Card Fraud, Lost or Stolen Debit Card, Consumer Liability, Error Resolution, Unauthorized Transactions, Notice of Error, Liability Calculator
4/1/2026 – Updated to clarify liability treatment for unauthorized transactions occurring on the date of notification.
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