A recurring expense is the same document every month. So when you submit a purchase marked recurring, NapkinLedger creates a checklist reminder for next month — carrying the exact inputs you just typed.

When the reminder fires, its form opens pre-filled: same vendor, same amount, same months. Confirm or tweak, submit, and the next reminder spawns. Bookkeeping becomes confirmation, not data entry.

This is the quiet compounding advantage of a document-first ledger: every entry remembers itself.