Closing the month is the process of making sure every transaction for the month is recorded, matched to the bank, and reviewed, so the reports you look at afterward are true. It isn’t accountant-speak for anything mysterious. If you own a small business and you’ve never been sure what your bookkeeper does during the first week of the month, this month-end close checklist lays out all 12 steps, in order, and what each one catches.
Key takeaways
- A close is finished when every account is reconciled, the balance sheet makes sense, and the period is locked.
- Reconciliation is the step that catches the most, but the balance sheet review is the one owners skip.
- A close that regularly runs past mid-month is a sign the weekly work isn’t happening.
What “closing” means and why the date matters
Every month has a cutoff. Transactions dated on or before the last day belong to that month; everything after belongs to the next one. Closing means you’ve done the work to make that cutoff real: the transactions are all in, the accounts match outside records, adjustments are posted, and then the period is locked so nothing changes by accident.
The date matters because reports are comparisons. Your March profit and loss statement only means something next to February’s and last March’s, and that only works if each month contains exactly its own activity. A $4,200 insurance bill that lands in March because nobody entered it in February makes March look worse and February look better than either one was. Closing on a consistent schedule keeps the comparisons honest, which is the whole reason you run reports in the first place.
The 12 steps, in order
Say you run a three-bay auto repair shop with a checking account, a savings account, one business credit card, an equipment loan, payroll through Gusto, and card sales through a processor. Here’s what closing March looks like, and what each step is there to catch.
- Get every transaction in. Pull the bank and card feeds through March 31 and categorize everything sitting in “for review.” Attach the receipts that go with them. Catches: the $640 parts order still uncategorized, the missing receipt for the compressor repair.
- Enter every invoice and bill. Record all customer invoices for work finished in March and every vendor bill dated in March, even the ones you’ll pay in April. Catches: revenue earned but never billed, and expenses that would otherwise land in the wrong month.
- Reconcile the bank accounts. Match checking and savings to the March statements, line by line, until the difference is zero. Our bank reconciliation walkthrough covers the mechanics. Catches: duplicates, missing transactions, bank fees, and anything you didn’t authorize.
- Reconcile the credit card and the loan. Same process for the card statement. For the equipment loan, match the balance to the lender’s statement and split each payment into interest and principal. Catches: loan payments booked entirely as expense, which overstates costs every single month.
- Clear undeposited funds and clearing accounts. Every card sale should be matched to the processor’s deposit, net of fees. Undeposited Funds should be near zero at month-end. Catches: sales counted twice (once at the sale, once at the deposit).
- Review the AR and AP aging reports. Look at who owes you and who you owe, by age. Apply any unapplied payments and credits. Catches: a fleet customer’s $2,900 invoice quietly sliding past 60 days, and vendor bills entered twice.
- Reconcile payroll. Tie the wages, employer taxes, and payroll liabilities in the ledger to Gusto’s March reports. Catches: net pay booked as wages, and tax liabilities that never cleared because the deposit was recorded to the wrong account.
- Reconcile sales tax. Compare sales tax collected on March invoices to the liability account and to what you’ll remit. Catches: sales tax sitting inside revenue, which inflates sales and creates a surprise when the return is due.
- Count and adjust inventory. If you stock parts, count them (or at least the expensive ones) and adjust the inventory balance so cost of goods sold reflects what was actually used. Catches: margins that look better than they are.
- Post the adjusting entries. Depreciation on the lifts and equipment, one-twelfth of the annual insurance premium moved out of prepaid, and any accrued expenses. Catches: a $4,200 insurance bill making one month look terrible instead of spreading $350 across twelve.
- Review the balance sheet, line by line. Every balance should be explainable. Negative liabilities, a loan balance that hasn’t moved in a year, or owner draws hiding in expenses all show up here. Catches: the errors the profit and loss statement can’t see.
- Review the profit and loss statement, then lock the period. Compare March to February and to last March. Ask about anything that moved more than you’d expect. Then set the closing date in your software so nothing changes without a password (QuickBooks support and Xero Central both show where the setting lives). Catches: misclassified expenses, and the accidental edit in June that would otherwise rewrite March.
The reports that come out the other side
Once the period is locked, three reports become trustworthy. The profit and loss statement shows what you earned and spent for the month; our guide to reading a profit and loss statement shows where to look first. The balance sheet shows what you own, what you owe, and what’s left, as of March 31. And the AR and AP aging reports show the cash that’s about to arrive and leave.
Those three are what you bring to your monthly money meeting. Reading them before the close is finished is like reading a draft; the numbers may move.
How long should the close take?
For a business like the repair shop, with a few hundred transactions a month and the weekly work kept up, a bookkeeper can usually finish the close within the first ten business days of the following month, and often sooner. The bank statements set the floor: you can’t reconcile until they’re available, which for many banks is the first few days of the month.
The close takes much longer when the weekly habits slip. If nobody touched the bank feed all month, step one alone can eat a full day. That’s why the monthly bookkeeping checklist puts so much in the weekly column: the close is fast when it’s mostly confirmation.
What to do when the close slips
A late close is common and fixable. The order matters: don’t try to close March and April at once. Finish March completely, lock it, and then do April, because April’s opening balances depend on March’s ending ones.
If you’re several months behind, pick the oldest unreconciled month and work forward, one at a time, doing only the 12 steps for each. Resist the urge to “just fix the current month first”; the errors are usually upstream. And if the backlog is more than three months, be honest with yourself about whether the weekend project ever happens. Our small business bookkeeping guide walks through the catch-up options, including handing it off.
Closing the month vs. closing the year
The year-end close is the twelfth monthly close plus a few extra steps: the CPA’s final adjusting entries for depreciation and accruals, closing the income and expense accounts into retained earnings (your software does this automatically), collecting the reports your tax preparer needs, and preparing W-2s and 1099s for their early-year deadlines. None of that is hard if the twelve monthly closes were done. All of it is miserable if they weren’t. The best year-end preparation is a clean close every month.
Frequently asked questions
Do I need to close every month if my business is small?
Yes, though “close” can take an hour for a tiny business. The habit matters more than the size. Skipping months is how a small cleanup becomes a large one.
What does “locking the period” actually do?
It sets a closing date in your accounting software. Any change to a transaction dated on or before that date triggers a warning or requires a password, which stops accidental edits from rewriting a month you’ve already reported on.
Can I close before the bank statement arrives?
You can do steps one and two, but the reconciliations need the statement. Some banks let you download statements a day or two after month-end; otherwise wait. Closing against an incomplete statement means reopening the month later.
Where to go from here
Print the twelve steps and check them off for last month, even if it was closed weeks ago. You’ll find out fast which steps are being done and which are being assumed. Then put the close on the calendar for the same days every month.
If you’d rather not be the one doing it, that’s fine too. A BooXkeeping team runs this checklist every month as part of small business bookkeeping, and sends you the reports when the period is locked.
BooXkeeping is a bookkeeping company, not a CPA firm or a law firm. This article is general information for business owners, not tax, legal, or financial advice. Rules change and your situation is specific, so confirm anything here with your CPA or attorney before acting on it.
Closing the month is the process of making sure every transaction for the month is recorded, matched to the bank, and reviewed, so the reports you look at afterward are true. It isn’t accountant-speak for anything mysterious. If you own a small business and you’ve never been sure what your bookkeeper does during the first week of the month, this month-end close checklist lays out all 12 steps, in order, and what each one catches.
Key takeaways
- A close is finished when every account is reconciled, the balance sheet makes sense, and the period is locked.
- Reconciliation is the step that catches the most, but the balance sheet review is the one owners skip.
- A close that regularly runs past mid-month is a sign the weekly work isn’t happening.
What “closing” means and why the date matters
Every month has a cutoff. Transactions dated on or before the last day belong to that month; everything after belongs to the next one. Closing means you’ve done the work to make that cutoff real: the transactions are all in, the accounts match outside records, adjustments are posted, and then the period is locked so nothing changes by accident.
The date matters because reports are comparisons. Your March profit and loss statement only means something next to February’s and last March’s, and that only works if each month contains exactly its own activity. A $4,200 insurance bill that lands in March because nobody entered it in February makes March look worse and February look better than either one was. Closing on a consistent schedule keeps the comparisons honest, which is the whole reason you run reports in the first place.
The 12 steps, in order
Say you run a three-bay auto repair shop with a checking account, a savings account, one business credit card, an equipment loan, payroll through Gusto, and card sales through a processor. Here’s what closing March looks like, and what each step is there to catch.
- Get every transaction in. Pull the bank and card feeds through March 31 and categorize everything sitting in “for review.” Attach the receipts that go with them. Catches: the $640 parts order still uncategorized, the missing receipt for the compressor repair.
- Enter every invoice and bill. Record all customer invoices for work finished in March and every vendor bill dated in March, even the ones you’ll pay in April. Catches: revenue earned but never billed, and expenses that would otherwise land in the wrong month.
- Reconcile the bank accounts. Match checking and savings to the March statements, line by line, until the difference is zero. Our bank reconciliation walkthrough covers the mechanics. Catches: duplicates, missing transactions, bank fees, and anything you didn’t authorize.
- Reconcile the credit card and the loan. Same process for the card statement. For the equipment loan, match the balance to the lender’s statement and split each payment into interest and principal. Catches: loan payments booked entirely as expense, which overstates costs every single month.
- Clear undeposited funds and clearing accounts. Every card sale should be matched to the processor’s deposit, net of fees. Undeposited Funds should be near zero at month-end. Catches: sales counted twice (once at the sale, once at the deposit).
- Review the AR and AP aging reports. Look at who owes you and who you owe, by age. Apply any unapplied payments and credits. Catches: a fleet customer’s $2,900 invoice quietly sliding past 60 days, and vendor bills entered twice.
- Reconcile payroll. Tie the wages, employer taxes, and payroll liabilities in the ledger to Gusto’s March reports. Catches: net pay booked as wages, and tax liabilities that never cleared because the deposit was recorded to the wrong account.
- Reconcile sales tax. Compare sales tax collected on March invoices to the liability account and to what you’ll remit. Catches: sales tax sitting inside revenue, which inflates sales and creates a surprise when the return is due.
- Count and adjust inventory. If you stock parts, count them (or at least the expensive ones) and adjust the inventory balance so cost of goods sold reflects what was actually used. Catches: margins that look better than they are.
- Post the adjusting entries. Depreciation on the lifts and equipment, one-twelfth of the annual insurance premium moved out of prepaid, and any accrued expenses. Catches: a $4,200 insurance bill making one month look terrible instead of spreading $350 across twelve.
- Review the balance sheet, line by line. Every balance should be explainable. Negative liabilities, a loan balance that hasn’t moved in a year, or owner draws hiding in expenses all show up here. Catches: the errors the profit and loss statement can’t see.
- Review the profit and loss statement, then lock the period. Compare March to February and to last March. Ask about anything that moved more than you’d expect. Then set the closing date in your software so nothing changes without a password (QuickBooks support and Xero Central both show where the setting lives). Catches: misclassified expenses, and the accidental edit in June that would otherwise rewrite March.
The reports that come out the other side
Once the period is locked, three reports become trustworthy. The profit and loss statement shows what you earned and spent for the month; our guide to reading a profit and loss statement shows where to look first. The balance sheet shows what you own, what you owe, and what’s left, as of March 31. And the AR and AP aging reports show the cash that’s about to arrive and leave.
Those three are what you bring to your monthly money meeting. Reading them before the close is finished is like reading a draft; the numbers may move.
How long should the close take?
For a business like the repair shop, with a few hundred transactions a month and the weekly work kept up, a bookkeeper can usually finish the close within the first ten business days of the following month, and often sooner. The bank statements set the floor: you can’t reconcile until they’re available, which for many banks is the first few days of the month.
The close takes much longer when the weekly habits slip. If nobody touched the bank feed all month, step one alone can eat a full day. That’s why the monthly bookkeeping checklist puts so much in the weekly column: the close is fast when it’s mostly confirmation.
What to do when the close slips
A late close is common and fixable. The order matters: don’t try to close March and April at once. Finish March completely, lock it, and then do April, because April’s opening balances depend on March’s ending ones.
If you’re several months behind, pick the oldest unreconciled month and work forward, one at a time, doing only the 12 steps for each. Resist the urge to “just fix the current month first”; the errors are usually upstream. And if the backlog is more than three months, be honest with yourself about whether the weekend project ever happens. Our small business bookkeeping guide walks through the catch-up options, including handing it off.
Closing the month vs. closing the year
The year-end close is the twelfth monthly close plus a few extra steps: the CPA’s final adjusting entries for depreciation and accruals, closing the income and expense accounts into retained earnings (your software does this automatically), collecting the reports your tax preparer needs, and preparing W-2s and 1099s for their early-year deadlines. None of that is hard if the twelve monthly closes were done. All of it is miserable if they weren’t. The best year-end preparation is a clean close every month.
Frequently asked questions
Do I need to close every month if my business is small?
Yes, though “close” can take an hour for a tiny business. The habit matters more than the size. Skipping months is how a small cleanup becomes a large one.
What does “locking the period” actually do?
It sets a closing date in your accounting software. Any change to a transaction dated on or before that date triggers a warning or requires a password, which stops accidental edits from rewriting a month you’ve already reported on.
Can I close before the bank statement arrives?
You can do steps one and two, but the reconciliations need the statement. Some banks let you download statements a day or two after month-end; otherwise wait. Closing against an incomplete statement means reopening the month later.
Where to go from here
Print the twelve steps and check them off for last month, even if it was closed weeks ago. You’ll find out fast which steps are being done and which are being assumed. Then put the close on the calendar for the same days every month.
If you’d rather not be the one doing it, that’s fine too. A BooXkeeping team runs this checklist every month as part of small business bookkeeping, and sends you the reports when the period is locked.
BooXkeeping is a bookkeeping company, not a CPA firm or a law firm. This article is general information for business owners, not tax, legal, or financial advice. Rules change and your situation is specific, so confirm anything here with your CPA or attorney before acting on it.