A bank reconciliation statement (BRS) is a document that compares your accounting records with the bank's records to ensure they match. If your books say you have $50,000 but the bank statement shows $48,500, the BRS explains the $1,500 difference.
Common reasons for differences: checks issued but not yet cashed (outstanding checks), deposits made but not yet credited (deposits in transit), bank charges you have not recorded, direct debits you forgot to enter, and interest earned but not yet booked.
Every business should prepare a BRS monthly. It catches errors (both yours and the bank's), detects fraud (unauthorized transactions), and ensures your financial records are accurate. Banks also perform their own reconciliation — cross-checking millions of transactions daily using automated systems.