Most business owners either don’t do their books until they have to, or they hand it off and stop paying attention. Both create the same problem: you arrive at year-end with numbers that don’t match reality and nowhere near enough time to fix them.
The clients who consistently have cleaner books, lower tax bills, and faster audit responses all share one thing: a monthly close routine. Not elaborate. Ninety minutes, once a month.
Week 1: Bank and card reconciliation
Every bank account and credit card should be reconciled in your accounting software — QuickBooks, Xero, whatever you use — within the first week of the following month.
“Reconciled” doesn’t mean the transactions are imported. It means the ending balance in your software matches the ending balance on your bank statement. Every penny. If it doesn’t, there’s a discrepancy — duplicate entry, missed transaction, fraud — that needs to be found before you pile another month of activity on top of it.
This takes 20 minutes for a business with two accounts. Maybe 40 for a business with six.
Weeks 1–2: Categorize everything correctly
Every transaction should be in the right expense category before you move on. This sounds tedious. It is. But it’s the foundation of every useful financial report you’ll ever produce.
The rule: if you look at a transaction three months later and can’t tell immediately what it was and why it was a business expense, it’s categorized wrong.
Meals are the classic example. “Restaurants” is not a business expense category. “Meals — client meetings” is. The IRS cares about the distinction. So does your P&L.
Week 2: Review your P&L against the prior month
Pull your income statement for the current month and set it next to last month’s. Look for anomalies. Revenue higher or lower than expected? Which expense lines moved significantly? Is gross margin stable?
You’re not looking for explanations for everything. You’re looking for things that don’t make sense — a utility bill that tripled, a payroll entry that looks off, a line item that shouldn’t exist.
Fifteen minutes of this review every month will surface more material errors than a year-end audit.
Month-end: Lock payroll and owner’s compensation
If you run payroll, confirm the entries posted correctly. W-2 employees are straightforward. S-Corp owners need to confirm their payroll matches their reasonable-compensation documentation — this is an IRS audit trigger when it’s too low.
Owner’s draws, distributions, and reimbursements should all be properly categorized and separated from compensation.
Quarter-end: Run a tax projection
At the end of each quarter, run a tax projection based on year-to-date numbers. What’s your estimated liability? Is it covered by your estimated payments? Do you need to adjust?
If your accountant doesn’t reach out to do this with you quarterly, ask them to. It’s not extra — it’s the baseline of what a proactive engagement looks like.
The 90-minute monthly close isn’t glamorous. It’s also the difference between business owners who feel in control of their finances and those who dread the call from their accountant every April.
