2025 Session Last amended: 1992 session

§ 336.3-407 — Alteration

Plain-Language Summary

An alteration is an unauthorized change to an instrument that modifies a party's obligation. A fraudulent alteration discharges the altered party's obligation, but a holder in due course can enforce the instrument according to its original terms.

Practical Notes
If someone changes the amount on a check, the original signer is not liable for the changed amount. But an innocent holder can still collect the original amount.