The process of matching your accounting records against bank statements to confirm every transaction is accurate and nothing is missing or double-counted.
Reconciliation is checking your own records against your bank and card statements to make sure every transaction matches. You go line by line: this deposit was that client’s payment, this charge was the software renewal. When your books and the bank agree, they’re reconciled.
For sellers, monthly reconciliation catches the things that quietly cost you money — a client payment that never arrived, a subscription you forgot to cancel, a duplicate charge, a fee you didn’t expect. It’s also what makes tax time painless instead of a frantic reconstruction. For buyers, this is internal bookkeeping, but a professional who reconciles regularly is one whose invoices and records you can trust.
The mistake is treating reconciliation as a once-a-year tax chore. Errors are easy to fix when they’re a month old and nearly impossible to untangle a year later. A 20-minute monthly habit beats a lost weekend in April — especially if you’ve kept business finances separate, which makes every line easy to categorize. A clean chart of accounts makes it faster still.