The Monthly Bookkeeping Checklist Every UK & US Small Business Needs

If your books only get attention when something breaks, you’re paying for it twice — first in stress, then in scramble fees at year-end. A clean monthly close prevents both.

Why a monthly checklist matters

Consistent monthly closes give you accurate margins, real cash visibility, and a paper trail that survives an audit, a sale, or a funding round. They also make tax season a 30-minute job instead of a three-week panic.

The AccoTiva monthly bookkeeping checklist

1. Reconcile every bank and card account

Match every transaction in QuickBooks or Xero to your statement. Investigate anything that doesn’t match within 48 hours.

2. Reconcile payment processors

Stripe, PayPal, Square, Shopify Payments — each has fees, refunds, and chargebacks that need to land in the right account. Skip this and your revenue will be wrong.

3. Categorise every transaction

No “Uncategorised Expense” should remain. Use sub-categories that mirror how you actually run the business.

4. Review accounts receivable

Anything 30+ days late gets a friendly nudge. 60+ days, a phone call. 90+ days, a payment plan or write-off decision.

5. Review accounts payable

Schedule what to pay and when, so cash never surprises you.

6. Run payroll and post journal entries

Payroll, pension contributions (UK PAYE) or benefits (US), and any owner draws.

7. Generate and review the P&L and balance sheet

Look at gross margin, operating expenses, and net profit vs last month. Anything moved >10%? Find out why before next month.

8. Back up and lock the period

Once reconciled, lock the period in your accounting software so nobody edits closed months.

Time-saving tips

• Set a fixed close date (e.g. the 10th of every month) and protect it on your calendar.
• Use bank rules in QuickBooks/Xero to auto-categorise repeating transactions.
• Take photos of receipts the moment you get them — Hubdoc, Dext, or QuickBooks mobile work great.

Need help running it?

AccoTiva runs this exact close process for 200+ SMBs in the UK and USA, every month, on time. Talk to us about a free 30-minute consultation.