§ 25-216.Part payment; acknowledgment of debt; effect upon accrual.

A debtor’s own conduct can give a contract claim new life. Section 25-216 provides that when part of the principal or interest on a contract-based claim has been voluntarily paid, or when the debtor has made a written acknowledgment of an existing liability, debt, or claim, or a written promise to pay it, the creditor can bring an action within the ordinarily applicable period, counted fresh from the date of that payment, acknowledgment, or promise.

The distinction between the payment trigger and the acknowledgment or promise trigger matters: a partial payment restarts the clock on its own, without needing to be in writing, while an acknowledgment of the debt or a promise to pay it has to be in writing to have that effect. Either way, the practical result is the same — the debtor’s conduct gives the creditor a fresh limitations period measured from that later date, rather than the original date the debt was incurred.

The section carves out one exception. It doesn’t apply to a real estate mortgage that has already become barred under section 25-202 as against subsequent encumbrancers and purchasers for value. Once that mortgage deadline has run against those later parties, a partial payment or written acknowledgment by the original debtor can’t revive it against them.