Why close your books every month when you have twelve customers?

01What “closed” means#

A month is closed when four things are true: every bank and card transaction is categorized, every balance-sheet account reconciles to an outside source (the bank statement, Stripe, the loan agreement, the payroll register), the accruals and schedules for the month are booked, and the period is locked so a late edit can’t change numbers you already sent someone.

• Cash ties to the bank statement, to the cent.
• Revenue ties to Stripe (or your billing system), with refunds and fees separated out.
• Prepaids, deferred revenue and fixed assets have a schedule behind them that ties to the balance sheet.
• Payroll ties to the payroll provider’s register, including employer taxes.

02Why it matters before you think it does#

Your burn and runway are only as right as your last close. If December’s software bills were never accrued, December looks cheap and January looks like a crisis. Investors who see that pattern in a data room ask why, and “we do the books at year end” is not a good answer.

Every outside party that looks at your company eventually wants monthly, accrual-basis statements: an investor in due diligence, a venture lender checking covenants, a 409A valuation firm, a buyer, and an auditor. Rebuilding twelve months at once is slower, more expensive and less accurate than closing each one as it ends. By then the receipts are gone and nobody remembers what the $4,000 wire was.

03A worked example: the bill that arrives in January#

Your cloud provider invoices December’s usage on January 3: $8,400. The bank feed knows nothing about it until the card is charged in January, so books kept from the bank show December $8,400 cheaper than it was and January $8,400 more expensive.

The close fixes it with an accrual dated December 31: debit hosting expense $8,400, credit accrued liabilities $8,400. December now carries its own cost. On January 1 the accrual reverses, and when the real invoice is booked and paid in January the two net to zero, so January carries only January. The same pattern covers a contractor who invoices late, payroll that spans the month end, and interest on a loan. None of it is visible in the bank feed, which is why “the bank is reconciled” and “the month is closed” are different statements.

04The order of a close#

The steps run in the same order every month, because each one depends on the one before: a balance can’t be reviewed until the entries behind it are in.

• Categorize every bank and card transaction, and match receipts.
• Reconcile cash and cards to the statements, and the payment processor to its payouts.
• Book the month’s accruals, and run the schedules: prepaids, deferred revenue, depreciation, leases.
• Tie payroll, including employer taxes, to the provider’s register.
• Reconcile every other balance-sheet account to its support, and explain any account that moved more than you expected.
• Review the statements, sign off, and lock the period.

05What a real-time close changes#

The traditional close happens after the month ends, which is why most small companies see last month’s numbers around the 20th of this one. A continuous close does the same work as transactions arrive: categorize, match, reconcile, run the schedules. By the first of the month the only things left are the handful of items that need a human decision, and your sign-off.