Monthly Accounts Review: What to Check Before Closing the Books
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A structured checklist covering reconciliations, accruals, expense categorisation, and statement sign-off for a reliable month-end close.
Key Takeaways
- Bank and account reconciliations must be completed before books are officially closed each month.
- Unrecorded accruals and prepaid adjustments are among the most common sources of misstated financials.
- Proper expense categorisation protects against tax filing errors and misrepresented profit margins.
- A signed-off financial statement package creates an auditable record for stakeholders and regulators.
- Consistent month-end discipline reduces year-end workload and audit risk significantly.
Why a Structured Month-End Review Matters
Closing the books each month is not simply an administrative ritual — it is a critical control point that validates the integrity of every financial decision your organisation makes downstream. Errors left uncorrected compound: a misclassified expense in January can distort budget variance reports through December and produce a materially misleading set of year-end financials.
For finance-savvy professionals who already understand the mechanics of debits and credits, the challenge is not knowledge — it is consistency. A structured checklist enforces that consistency regardless of staffing changes, workload spikes, or ERP system upgrades. If you need a refresher on foundational concepts before working through this checklist, see our comprehensive introduction to financial record-keeping.
The checklist below is organised into four logical phases: data completeness, reconciliations, adjusting entries, and final sign-off. Work through each group in sequence — later steps depend on earlier ones being clean.
General Ledger / ERP System
The primary system of record for posting transactions, running trial balances, and locking closed periods.
Bank Statements
Official bank-issued statements used to verify and reconcile cash balances against the ledger.
Accounts Payable and Receivable Sub-Ledgers
Detailed records used to reconcile vendor and customer balances to the general ledger control accounts.
Payroll Register
Period summary of gross wages, deductions, and employer costs used to verify payroll journal entries.
Fixed-Asset Schedule
Asset-by-asset register tracking cost, accumulated depreciation, and net book value for each period.
Spreadsheet or Close Management Software
Tracks open items, reconciliation status, and sign-off workflow across the close checklist.
How to Work Through the Checklist
Before launching into reconciliations, confirm that all source data for the period has been imported or posted. Sub-ledgers that feed the general ledger — accounts payable, accounts receivable, payroll, fixed assets — must be fully updated. Running reconciliations against an incomplete general ledger produces false variances and wastes time chasing phantom discrepancies.
Lock the Period Once Sign-Off Is Complete
Posting transactions to a closed period after sign-off undermines the reliability of reported figures and creates an uncontrolled audit trail. Most ERP systems allow period locking at the user-role level — activate this control. Any legitimate late adjustments should be posted in the current open period with clear documentation referencing the prior period they relate to.
Once data completeness is confirmed, move through reconciliations systematically, then adjusting journal entries, and finally the financial statement review. Flag any item that cannot be resolved within the close window as an open item, document the reason, and assign a named owner with a resolution deadline. Open items should never silently roll into the following month without documentation.
For teams managing ongoing record hygiene beyond the close itself, the habits that keep financial records reliable covers the daily and weekly practices that make each month-end faster and cleaner.
Data Completeness
Reconciliations
Adjusting Journal Entries
Final Review and Sign-Off
Avoid Rolling Over Unresolved Items
Posting an unexplained reconciling difference to a suspense account and closing the period creates a cumulative problem that becomes progressively harder to unwind. Every open reconciling item must have documented ownership and a resolution deadline — not an indefinite carry-forward. Regulators and auditors treat unexplained suspense balances as a red flag for weak internal controls.
Expense Misclassification Carries Tax Risk
Recording a capital expenditure as an operating expense — or vice versa — does not merely affect presentation; it alters taxable income and depreciation deductions in ways that can trigger IRS scrutiny. Review any large or unusual expense postings against your capitalisation policy before closing. When in doubt, consult your tax adviser before the period is locked.
After sign-off, the closed period's financial statements become the foundation for deeper analysis. If your role extends to investment or capital allocation decisions, the financial statement analysis routine provides a structured framework for interpreting those numbers before committing capital.
This article is for general informational and educational purposes only and does not constitute accounting, tax, legal, or financial advice tailored to your specific circumstances. Consult a qualified CPA, controller, or financial adviser regarding your organisation's particular situation.
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Accounting & Tax Editorial Team
Accounting & Tax Editorial Team is the collective byline for our editorial team and contributor network. Articles published under this byline or an editorial pen name are researched, written, and reviewed according to our editorial standards for clarity, consistency, and independence before publication.
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