The Month-End Close Checklist for Canadian Small Business

A month-end close is a fixed sequence that turns a month of raw transactions into numbers you can act on, and then freezes them. The business case is not tidiness. It is that every problem in your books is cheapest to fix in the month it was created, while the person who made the purchase still remembers what it was for and the supplier can still send a duplicate receipt. Close annually and you will find twelve months of problems during the one week of the year you have the least capacity to fix any of them.

The 60-second version

• Close in a fixed order: cash, then completeness, then judgment, then review, then lock. Each step depends on the one before it.
• The bottleneck is never the bookkeeping. It is waiting on receipts and expense claims from people, which is a process problem, not an accounting one.
• Review GST/HST monthly even if you file quarterly. Net tax under section 225 of the Excise Tax Act is only as good as the support behind the input tax credits [2].
• Section 230 requires records that enable tax payable to be determined [1]. A month closed with unexplained balances does not meet that standard.
• Lock the period. A closed month that silently changes invalidates every report and every return built on it.

Why close monthly instead of annually?

Four reasons, in order of how much money each one saves.

Memory has a half-life. Ask someone in early October what a supplier charge from late September was for and you get an answer. Ask in March and you get a guess, and a guess is not a record that enables tax payable to be determined [1].

Receipts become unobtainable. Most suppliers will reissue a copy within weeks. After a year, the request is often more work than the deduction is worth, and without the prescribed supporting information the input tax credit is not claimable at all [3].

Errors compound. A miscoded recurring charge caught in month one is one correction. Caught at year end it is twelve, plus every report and instalment estimate that used the wrong figure.

Decisions need current numbers. A 13-week cash flow forecast anchored to books last reconciled in the spring is fiction. So is a current-year instalment estimate, which matters directly for corporate tax instalments.

Step 1: Reconcile every bank and card account

Reconcile each account to the statement, not to the feed. Bank feeds miss transactions, duplicate them, and occasionally reclassify them after import. The close is the point at which you confirm the ending balance in your system equals the ending balance on the statement issued by the institution, and you identify every difference.

Do the credit cards with the same rigour as the chequing account. Card accounts are where personal charges hide, where cancelled subscriptions keep renewing, and where the single largest volume of missing receipts lives. Our guide to corporate cards and spend controls covers the matching routine in detail.

Leave nothing in an uncategorized or suspense account at the end of this step. An uncategorized transaction is a question you have deferred to a version of yourself who will know less than you do now.

Step 2: Catch the expenses the system does not know about

This is the step most small businesses skip, and it is the one that most affects the accuracy of the month.

Three populations of missing transactions exist at any month end. First, expense claims incurred on personal cards and not yet submitted, which are real liabilities the accounting system has never seen. Second, card charges with no attached receipt, which are recorded but unsupported. Third, supplier invoices received but not entered.

Work them in that order. Send a single deadline to everyone who spends money: all claims and receipts for the month are due by a named date, usually the second or third business day after month end. Then chase only the exceptions. The discipline works far better when people are not being asked to reconstruct anything, which is the argument for capturing at the point of sale rather than at month end. MapleExpense lets staff photograph a receipt when they pay and file the claim immediately, so the month-end exercise is reviewing a short exception list rather than issuing a general appeal for paperwork. For the rules that make the deadline stick, see our employee expense reimbursement policy guide and expense report approval workflows for small teams.

For anything genuinely unobtainable, document the gap: date, vendor, amount, business purpose and why no receipt exists. A documented gap is a defensible position. A quietly dropped transaction and an invented one are both worse.

Step 3: Review GST/HST collected and input tax credits

Do this monthly even if you file quarterly or annually. Net tax is computed under section 225 of the Excise Tax Act from tax collected or collectible less the input tax credits claimed, and the credits must be claimed in a return filed within the applicable time limit [2]. Subsection 169(4) requires that you have obtained the prescribed supporting information before making the claim [3].

Concretely, the monthly review means three checks: that GST/HST collected in the ledger agrees to the tax on the month's sales, that input tax credits claimed are supported by documents you actually hold, and that no zero-rated, exempt or out-of-province supply has been taxed at the wrong rate. Our input tax credit guide covers the documentation tiers, and GST/HST filing tips covers the return itself. Registrants using the quick method run a different calculation but still need the underlying records.

Step 4: Accruals, prepayments and the entries that require thought

Now record what the cash did not tell you. Accrue expenses incurred but not yet invoiced. Move the unexpired portion of annual payments such as insurance and software into prepaid. Record depreciation or the monthly portion of your capital cost allowance estimate, keeping in mind that the tax deduction follows the CCA class rules rather than your book depreciation policy. Apply the deduction limits that your coding depends on, including the portion restriction on meals and entertainment.

Then apply the test in paragraph 18(1)(a): was this outlay made for the purpose of gaining or producing income [8]. Anything that fails it is either non-deductible or, in a corporation, a shareholder item rather than an expense.

Step 5: Review the balance sheet line by line

The income statement gets all the attention and the balance sheet holds all the errors. Go down it and be able to say what each balance consists of.

Pay particular attention to the shareholder loan account, where a balance moving in the wrong direction has tax consequences that are far easier to manage before year end than after. Our article on the shareholder loan account and personal credit card purchases explains why, and separating business and personal finances covers how to stop the balance from accumulating in the first place.

Check that your account structure still maps cleanly to the codes you will need at year end. A chart of accounts aligned to the GIFI codes used on the T2 return [6] makes the annual filing a mapping exercise instead of a reorganization, and consistent coding month to month is what makes comparative statements meaningful. See expense categorization best practices.

Step 6: Produce the statements, then lock the period

Print the income statement, balance sheet and cash flow, and actually read them against the prior month. The close is not finished when the entries balance; it is finished when someone has looked at the result and can explain the movements.

Then lock the period in your accounting system. This is the step people skip and regret. Without a lock, a backdated entry posted in November silently changes September, which means the GST/HST return you already filed and the instalment you already calculated no longer agree with your books. Corrections after a lock belong in the current period as dated adjusting entries, so the trail shows what changed and when.

Finally, file the supporting records where you can retrieve them. Section 230 sets the obligation to keep records, and CRA guidance confirms that electronic images are acceptable provided they are readable and retained for the required period [1][4][5]. MapleExpense stores the captured receipt with the transaction it supports, which is the arrangement that matters during a review: not a folder of images and a separate ledger, but a document attached to the entry it proves. Our guides to six-year retention of digital receipts and audit preparation cover what retrieval should look like when someone asks.

Twelve closes a year, each taking a few days, replaces one annual reconstruction that takes weeks and produces worse numbers. That is the whole argument.

Frequently asked questions

What is a month-end close?

A month-end close is a fixed sequence of steps that turns a month of raw transactions into financial statements you can rely on, and then locks the period so the numbers stop changing. At minimum it covers reconciling every bank and credit card account to the statement, capturing expenses and receipts that have not yet been submitted, reviewing GST/HST collected and input tax credits, recording accruals and adjusting entries, reviewing the balance sheet account by account, and locking the period.

Why close the books monthly instead of once a year?

Because problems are cheap to fix in the month they happen and expensive a year later. At month end the person who made a purchase still remembers what it was for, a missing receipt can usually still be obtained from the supplier, and a miscoded transaction has not yet propagated through eleven more months of reporting. Monthly closing also produces the reliable figures a cash flow forecast and a tax instalment estimate depend on, which annual closing cannot.

What order should the month-end close steps go in?

Cash first, then completeness, then judgment, then review, then lock. Reconcile bank and credit card accounts to the statements, chase unsubmitted expense claims and missing receipts, reconcile GST/HST collected and input tax credits, record accruals, prepayments and depreciation, review the balance sheet and the shareholder loan account, produce and read the statements, then lock the period. The order matters because each step relies on the completeness of the one before it.

How long should a month-end close take for a small business?

For a business with a handful of accounts and a working receipt capture process, five business days from month end is a realistic target and three is achievable. What determines the number is almost never the bookkeeping; it is how long it takes to collect receipts and expense claims from people. Businesses that capture receipts at the point of purchase close in days, while those that chase paperwork afterward close in weeks.

What is a period lock and why does it matter?

A period lock is a setting in your accounting system that prevents anyone from posting or editing transactions dated in a closed period. It matters because a closed month that silently changes makes every report derived from it wrong, including GST/HST returns already filed and instalment estimates already calculated. Lock the period as the final step of the close and handle later corrections as dated adjusting entries in the current period, so the audit trail shows what changed and when.

What do I do about an expense with no receipt at month end?

First try to obtain a duplicate from the supplier, which is usually possible for card purchases within a few weeks. If it cannot be obtained, record the expense with a written note of the date, vendor, amount, business purpose and why the receipt is unavailable, and flag it for your accountant. Do not silently drop the transaction and do not claim the GST/HST as an input tax credit without the supporting information the regulations require. A documented gap is defensible; a fabricated record is not.

Do I have to reconcile GST/HST every month if I file quarterly?

You are not required to, but you should. Reviewing GST/HST collected and input tax credits monthly means the return is a summary of work already done rather than a reconstruction under deadline, and it surfaces missing supporting documentation while it can still be obtained. Since net tax is calculated under section 225 of the Excise Tax Act from amounts that must be properly supported, finding gaps early is the difference between filing accurately and filing hopefully.

Sources cited in this article

1. Income Tax Act, s. 230 (books and records)
   Requires records and books of account containing information that enables taxes payable to be determined, and sets the retention obligation.
   https://laws-lois.justice.gc.ca/eng/acts/I-3.3/section-230.html
2. Excise Tax Act, s. 225 (calculation of net tax)
   Sets out how a registrant computes net tax for a reporting period, including the condition that input tax credits be claimed in a return filed within the applicable time limit.
   https://laws-lois.justice.gc.ca/eng/acts/E-15/section-225.html
3. Excise Tax Act, s. 169 (input tax credits)
   Establishes entitlement to input tax credits and, in subsection 169(4), the requirement to obtain prescribed supporting information before claiming.
   https://laws-lois.justice.gc.ca/eng/acts/E-15/section-169.html
4. CRA, RC4409 Keeping Records
   CRA guide on what constitutes adequate books and records, supporting documents, electronic records and retention periods.
   https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/rc4409.html
5. CRA, Keeping records
   The CRA landing page for record keeping obligations, including electronic record requirements and when records may be destroyed early.
   https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/keeping-records.html
6. CRA, RC4088 General Index of Financial Information (GIFI)
   The standardized financial statement codes a corporation uses when filing a T2 return, which your chart of accounts should map to.
   https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/rc4088.html
7. CRA, RC4022 General Information for GST/HST Registrants
   Reporting periods, filing and remittance deadlines, input tax credit eligibility and documentary requirements.
   https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/rc4022.html
8. Income Tax Act, s. 18(1) (general limitations on deductions)
   Paragraph 18(1)(a) limits deductions to outlays made for the purpose of earning income; paragraph 18(1)(h) denies personal or living expenses.
   https://laws-lois.justice.gc.ca/eng/acts/I-3.3/section-18.html

All sources verified 2026-09-23. Spotted a link that has moved? Email [email protected] and we will correct it.