Good bookkeeping makes transactions understandable and allows a business to check its cash position and support its records. Software can help, but imported bank data still need review. This guide focuses on routine recordkeeping; tax and entity requirements depend on the relevant jurisdiction.
Ten mistakes to check
- Missing transactions: capture every business payment and receipt, including cash and processor activity.
- Mixing personal spending: keep separate records and, where appropriate, separate accounts. Record owner withdrawals or contributions accurately rather than treating them as ordinary sales or expenses.
- Skipping reconciliation: compare the ledger with bank and processor statements, checking timing differences and unexplained items.
- Recording an imported payment twice: match a bank feed to an existing invoice payment instead of adding another sale.
- Losing supporting documents: keep invoices, receipts and the business purpose where needed. A description in the bank feed may not establish deductibility.
- Confusing loans with revenue: borrowed money increases cash but creates a repayment obligation.
- Ignoring processor fees: reconcile gross customer payments, fees and the net bank deposit.
- Using inconsistent categories: maintain a clear method and review unusual transactions before accepting an automatic suggestion.
- Leaving everything until a deadline: schedule a short regular review so missing records are easier to find.
- Relying on an untested backup: protect access and check that exported or backed-up records can be restored.
A duplicate-payment example
Illustration: you issue a $300 invoice and record the customer payment when it arrives. Later, a bank feed imports the same $300 deposit. If you add it as new revenue, the books can show $600 of income even though the customer paid once. Match the deposit to the existing payment and retain the invoice and payment record.
Do not correct a historical error by silently inventing a different transaction. Keep an understandable correction trail and obtain advice if an error affects a filed return or closed period.
What U.S. tax records need to support
The IRS recordkeeping guidance explains the role of records in showing income, expenses and amounts reported on returns. Retention periods depend on the record and circumstances; one blanket deletion rule is not appropriate for every document.
Bookkeeping profit, cash in the bank and taxable income may differ. Depreciation, unpaid invoices, loan transactions and the accounting method can affect the comparison. A bank balance alone does not show the amount available to withdraw safely.
A monthly review you can repeat
- Gather bank, card and processor statements.
- Match transactions and reconcile closing balances.
- Identify missing receipts, unpaid invoices and duplicate entries.
- Review owner transactions, loans and unusual categories.
- Check upcoming payments and filing responsibilities.
- Save a readable report and a protected backup.
When professional help is useful
Ask for qualified support when hiring staff, changing accounting methods, operating across borders or correcting material errors. Bring organized records and specific questions. For a document setup, see the small-business documents and tax checklist. If the business starts as extra work, review the side-business profit example before confusing revenue with earnings.