A Monthly Bookkeeping Checklist for Canadian Small Businesses

Quick answer: A monthly bookkeeping checklist should cover complete records, account reconciliations, unpaid invoices and bills, unusual transactions, and a review of the financial reports. The goal is a documented, repeatable process that identifies unresolved items and upcoming commitments. Use this guide to decide what to collect, what to check, and what to ask your bookkeeper.

Bookkeeping becomes harder when each month ends without a clear stopping point. Receipts stay in email, unfamiliar transactions accumulate, and financial reports become something you promise to review later. A consistent monthly routine gives you a better chance of catching small issues before they become a cleanup project.

The right checklist depends on your business, but it should do more than confirm that transactions were imported. It should help you understand what happened, what remains unresolved, and what needs attention next month.

Start by collecting complete records

Gather bank and credit card statements, sales reports, supplier invoices, receipts, payroll reports, and financing statements for the month. Include every account used by the business, even one with little activity. A quiet account can still contain fees, interest, or transfers that need to be recorded.

Give documents clear names and keep them in a consistent location. If something is missing, track the gap with a date, amount, and person responsible for obtaining it. A visible list is more useful than assuming someone will remember.

Reconcile each bank and credit card account

Compare the bookkeeping with the actual account statements. Investigate differences instead of adding an unexplained adjustment to force a match. Duplicate imports, missing fees, and transfers recorded on only one side can all distort the records.

For example, paying a business credit card from your chequing account is normally a transfer between accounts, not a second expense. The original purchases and the payment need to be connected correctly so costs are not counted twice.

Review who owes you and who you owe

Look at unpaid customer invoices by age. Confirm that payments have been applied to the right customer, and separate genuinely overdue balances from disputed invoices or credits waiting to be processed. Assign follow-up rather than simply carrying the same old balances forward.

Review supplier bills in the same way. Compare important supplier statements with your records, check for duplicate bills, and identify payment commitments. Knowing the total payable is helpful; knowing when each amount falls due is more useful for planning cash.

Resolve unusual transactions while they are fresh

A payment description rarely tells the whole story. Ask about unfamiliar purchases, owner transfers, refunds, and large one-time transactions before memories fade. Keep explanations with the supporting document so the same question does not need to be asked again at year-end.

A monthly review also helps distinguish operating expenses from equipment purchases, loan repayments, and personal spending. Your accountant can determine the appropriate treatment when the underlying purpose is unclear.

Read the reports before closing the month

Compare revenue, major expenses, and profit with the previous month and your expectations. Ask whether a change reflects real business activity, a timing difference, or an entry requiring correction. Review the balance sheet as well as the income statement; cash, loans, customer balances, and supplier balances matter too.

Then update upcoming cash commitments. BDC explains how cash flow projections can support planning. A profitable month does not guarantee enough money will be available on every payment date.

Agree on what “complete” means

Before signing off, record which accounts were reconciled and which questions remain open. A monthly close should have a clear owner and a realistic review date. Avoid treating an unresolved month as final simply because a report was generated.

A monthly bookkeeping checklist you can put into practice

A checklist becomes useful when each task has an owner, a source document, and a clear definition of completion. “Check the bank” is too vague. “Reconcile the operating account to the full month-end statement and list unresolved differences” tells the reviewer what evidence should exist.

Use the following sequence as a starting workflow, adjusting it for transaction volume and the systems you use. This is an operational routine, not a universal tax deadline. GST/HST, payroll, and income-tax obligations follow the rules applicable to each account.

1. Collect statements and supporting documents for the month.
2. Check that bank feeds and transaction imports cover the complete period.
3. Record and review sales, purchases, customer payments, and supplier payments.
4. Reconcile the relevant bank, credit card, and payment accounts.
5. Review outstanding customer invoices and supplier bills.
6. Investigate unusual entries and owner or related-company activity.
7. Review reports, document remaining questions, and update cash commitments.

Example: why a payment-processor deposit needs investigation

Suppose your online store collects $12,000 during a reporting period and the processor deposits $11,400 after fees, refunds, and other adjustments. That $600 difference is not automatically one expense. The settlement report may contain several components that need separate entries.

Retrieve the sales report, processor settlement, fee statement, and bank deposit. Compare the dates because a month-end settlement may reach the bank in the following month. Your bookkeeper should be able to explain both the gross activity and the net cash received without creating duplicate sales.

Document the process once, then use it consistently. If the business introduces another processor, repeat the setup review rather than assuming its reports and fee structure work the same way.

Build a CRA document check into the monthly routine

Bookkeeping software can store a total without preserving the evidence behind it. The CRA’s business-records guidance describes income and expense records and their supporting documents. Use the monthly review to identify missing invoices before suppliers or staff become harder to contact.

If your business claims GST/HST input tax credits, review the CRA’s input tax credit documentation requirements. Eligibility and support matter; a payment in a bank feed alone does not answer every question. Flag incomplete supplier information for review rather than guessing it.

Keep a separate calendar of filing and payment obligations. Completing a monthly bookkeeping checklist does not itself submit a return or make a remittance. Confirm who is responsible for each step and what evidence will show it was completed.

Questions to ask when the numbers change unexpectedly

If revenue rises sharply, check whether the increase reflects actual sales, deposits that were misclassified, or invoices entered twice. If an expense category drops, ask whether bills are missing before celebrating a saving. A report is a starting point for a business question, not proof of the explanation.

Review balance-sheet accounts as well. An unusually large customer credit, a negative supplier balance, or an old clearing-account amount can indicate work that has not been completed. Ask for the transaction detail and the proposed next step.

Use comparisons that make sense for your operation. A seasonal business may need the same month last year as well as last month. A contractor may learn more from job-level results than from a company-wide total that combines profitable and unprofitable projects.

What to do when the books are already several months behind

Start with the last reliable reconciled period, not the most recent bank feed. Gather complete records from that point forward and create a missing-document list. Decide with your provider which reporting needs or CRA correspondence require early attention while the historical work continues.

Ask for a catch-up scope that identifies the accounts, periods, transaction volume, and known corrections. Once the backlog is resolved, agree on the recurring handoff date and the owner’s response responsibilities. Without that second step, the same backlog can return quickly.

Our catch-up bookkeeping costs guide explains why the condition of the records affects scope. Organized submissions can reduce document-chasing, but they do not replace reviewing the underlying entries.

Frequently asked questions about monthly bookkeeping

Is monthly bookkeeping necessary if I file taxes annually?

Annual filing and regular financial oversight serve different purposes. A monthly routine can help you identify unpaid invoices, missing documents, and cash commitments sooner. The right review frequency depends on how your business operates.

Can I complete the checklist myself?

Many owners manage some or all of the routine. Be realistic about your time and the complexity of the accounts. Ask for help with entries or balances you cannot explain instead of forcing them into a convenient category.

What does my bookkeeper need from me each month?

Typically, complete statements, invoices and receipts, relevant sales and payroll reports, and explanations of unusual transactions. Agree on a checklist tailored to your accounts, software, and business structure.

How do I know the month is finished?

Ask which accounts were reconciled, what reports were reviewed, and which questions remain. Keep a short close summary with the review date and outstanding items. “All transactions imported” is not the same as “all work reviewed.”

Effortless Accounting helps Canadian businesses establish manageable bookkeeping routines and catch up overdue records. If you are starting with a backlog, our document checklist can help you gather the starting information. Contact us to discuss a routine that fits your business.