Segregation of Duties
An internal control that splits key financial tasks — authorizing, recording, and safeguarding assets — across different people, so no single person controls a transaction end to end.
If the same person can approve an invoice, cut the check, and reconcile the bank statement, there’s nothing structurally stopping (or catching) a fraudulent payment to themselves. Segregation of duties breaks that chain apart — one person requests or approves a payment, someone else issues it, and a third person reconciles the resulting bank activity.
Small nonprofits with lean finance teams often can’t achieve full segregation of duties with staff alone, which is exactly where compensating controls matter: a treasurer or board finance committee reviewing bank statements independently, requiring two signatures above a dollar threshold, or having the external accountant perform monthly reconciliations the internal bookkeeper doesn’t touch.
Auditors evaluate segregation of duties as part of assessing internal control risk, and a documented weakness here — even without any actual fraud found — typically shows up as a recommendation in the audit’s management letter.
See also: Reconciliation, Whistleblower Policy
