Monthly Bookkeeping Checklist for Solo Businesses

Pick one day a month — the same day, if possible — and run through this checklist. It takes most freelancers 30-60 minutes once it becomes routine.

• Reconcile your business bank and credit card accounts against your bookkeeping records
• Categorize any uncategorized transactions from the month
• Send any overdue invoices and follow up on unpaid ones
• Review your profit and loss statement for the month
• Set aside your tax percentage from this month's profit (see the tax calculator)
• Note any large or unusual expenses that might need documentation later

Why monthly, not quarterly or annually

Monthly is frequent enough to catch errors and missing documentation while details are still fresh, but infrequent enough to not feel like a daily chore. Waiting until quarterly tax payments force a review means three months of transactions to sort through at once — waiting until year-end means twelve.

What "done well" looks like after a year

Twelve months of this checklist, done consistently, means your tax preparer (or you, doing it yourself) can pull a complete, accurate profit and loss statement and expense list in minutes rather than days — because the work happened gradually all year instead of compressed into a single stressful sprint every April.