1. Gather the Month’s Records
Start with bank and credit card statements for every business account. Collect customer invoices, supplier bills, receipts, loan statements, and relevant payment processor reports. Keep records for unusual activity, such as equipment purchases or owner contributions, with the month they relate to.
A downloaded transaction is useful information, but it may not explain what the purchase was for. Save the supporting document while it is still easy to find.
2. Review Income and Expense Categories
Look for uncategorized activity, duplicate entries, and categories that do not fit the transaction. Check transfers between your own accounts so they are not accidentally treated as new income or expenses. Separate owner activity from customer payments and business costs.
Make a short question list rather than choosing a category you cannot support. Resolving five unclear transactions is easier when each has a date, amount, account, and specific question.
3. Reconcile Bank and Credit Card Accounts
Compare each account with its statement for the period. Investigate differences and check that the starting point is reliable. Keep a record of what remains unresolved and why. A month should not be treated as finished simply because most transactions have downloaded.
4. Review Reports and Open Balances
Read the profit and loss statement alongside the balance sheet. Look at outstanding customer invoices and supplier bills where you maintain those records. Ask what changed, whether any amount looks unusual, and whether the reports include all the records for the month.
For example, a large expense increase might reflect a one-time equipment purchase, a duplicate, or a genuine change in costs. The report gives you a question to investigate.
5. Keep a Simple Completion Checklist
Statements collected. Supporting documents saved. Transaction questions answered. Categories reviewed. Accounts reconciled. Reports reviewed. Open invoices and bills checked. Unresolved items documented.
Assign an owner to each step and choose a regular review date. The routine does not need to be elaborate; it needs to happen consistently.
When to Get Support
If the checklist keeps rolling into the next month, the problem may be time, missing records, or a setup that needs attention. Lighthouse provides monthly bookkeeping for service businesses nationwide, with cleanup reviewed separately when older periods are behind.