A monthly close gives a small business a reliable picture of profit, cash and outstanding commitments. It works best as a short checklist with named owners, supporting records and a review date.
This is an internal operating checklist, not a statutory filing timetable. Payroll and tax deadlines may fall outside your close schedule. Keep them on a separate compliance calendar and confirm the dates applicable to your company.
1. Collect and Complete the Records
Gather invoices, bills, credit notes, expense claims, payroll summaries and bank statements for the period. Include payment gateways, cash sales and business card transactions. List missing documents and ask the responsible person to provide them before the agreed cut-off.
Check that sales and purchase records belong to the right period. Avoid relying solely on payment dates: an unpaid invoice may still need recording. Separate owner contributions and loans from trading income. The double-entry guide explains why the classification matters.
2. Reconcile Money and Outstanding Balances
| Balance | Check |
|---|---|
| Bank and cards | Ledger matches statements; outstanding items are explained. |
| Payment platforms | Gross sales, fees and settlements reconcile. |
| Customers | Invoices, receipts and credit notes agree to ageing reports. |
| Suppliers | Bills and payments agree; unusual balances are investigated. |
| Payroll | Approved payroll, liabilities and confirmed payments agree. |
| Loans and owners | Movements have evidence and are not mixed with revenue. |
Keep unresolved items visible. A small unexplained difference repeated each month can become a larger problem than a single clearly documented timing difference.
3. Review Adjustments and Tax Working Papers
Review inventory movements, fixed assets, depreciation, prepayments and accrued costs where relevant. Record the calculation and approval for each adjustment. Do not copy last month's journal without checking whether it still applies.
Prepare VAT reconciliations if applicable, but do not assume that a monthly close means a monthly VAT return. Check your assigned tax period and official account. For current tax materials, use the FTA Corporate Tax guides and our VAT compliance guide.
4. Review Reports, Not Just Totals
Prepare a profit and loss report, balance sheet, cash summary and receivables/payables ageing. Compare results with the prior period and investigate unexpected changes. Ask whether margins moved because of real trading activity, missing purchases or an incorrect posting.
Illustrative review: revenue rises while bank receipts remain flat. Check customer ageing and invoice dates before treating the higher sales figure as available cash. Likewise, a loan received improves cash but does not make operations profitable.
Our financial reporting service can help organise a management pack with explanations rather than numbers alone.
5. Approve, Archive and Prepare the Next Month
Name the preparer and reviewer, record the approval date and retain the final reports and reconciliation schedules. Lock a reviewed period where your software supports it, with controlled access for later corrections. Back up or export records and keep sensitive payroll information restricted.
For planning, you might collect records during the first three working days, reconcile during the next two and review reports afterwards. This is an example, not a legal deadline. Adjust it to your volume and ensure it does not delay payroll or filings. If older months remain incomplete, run a separate backlog clean-up.
Frequently Asked Questions
Does Every Small Business Need the Same Checklist?
No. Add stock, projects, multiple currencies or industry-specific schedules as needed, without dropping basic reconciliations.
What Is the Most Important Monthly Check?
There is no single substitute for a complete review. Bank reconciliation and supported customer and supplier balances are useful starting controls.
Can a Closed Month Be Corrected?
Yes, through a controlled adjustment process. Retain the reason, evidence and approval instead of silently replacing reviewed records.
Reviewed October 2, 2026. General educational information, not personalised accounting, tax or legal advice. Check current official guidance for your circumstances. Profitrack is an independent private consultancy, not a government authority.