What is period closing?
Published
Period closing is completing a period's entries, adjustments, and reconciliations, then locking it so the system accepts no recording or edit dated inside it. The closing date is the boundary set in the system: everything before it is carved, everything new records after it - which is what makes figures submitted on a return or statement defensible forever.
The monthly closing checklist - in execution order
□ 1. Recording complete: all the month's invoices (sales and supplier) and vouchers in□ 2. Bank (and company card) reconciliation - that page holds the full example□ 3. Adjusting entries: accruals (salaries, utilities) · prepayment release (Al-Waha's 12,000 rent) monthly depreciation (500) · end-of-service provision□ 4. Inventory: book agreement, physical count if scheduled□ 5. Clear the parked: unmatched transactions, "unclassified," opening balance equity□ 6. VAT: outputs ÷ 0.15 matching e-invoicing sales? every input backed by its invoice?□ 7. Trial balance review: odd signs, jumps, the owner's current account□ 8. Issue and compare the basic reports□ 9. Set the closing date ← period locked
Item 6 before the lock, not after - deliberately ordered: a period locked before its tax reconciliation produces a return on unexamined numbers.
Monthly and annual
Monthly closing is managerial, per the list above. Annual adds: the full count, ageing and provision reviews (doubtful debts, slow stock), the year's depreciation completed, then the closing entries moving result accounts into retained earnings (Al-Waha: 150,000 + 27,250 − 18,000 = 159,250) - opening the new year with zero revenue and a carried balance sheet.
Something arrived for a closed period - the three cases
| Case | Treatment |
|---|---|
| A late-arriving invoice | Record in the first open period, referencing its origin |
| A discovered error | A correcting entry in an open period, with its memo - no reopening |
| A material error touching a filed return | The accounting correction above plus the authority's return-correction path (its page) |
Reopening locked periods "to tidy the numbers" is precisely what makes books indefensible - a period reopens as a documented, decided exception, never a habit.
Frequently asked questions
How long should a monthly close take?
With a system and rolling reconciliations: a few working days into the next month. A close stretching weeks is a backlog symptom, not a closing disease.
Who holds the closing-date permission?
The narrowest set: the responsible accountant or management - and changing it is, by design, a logged system event.