What Is Month-End Close? A Step-by-Step Walkthrough for AP and Accounting Teams
Month-end close is the sequence of accounting activities that converts a month's worth of daily transactions into a published set of financial statements. It happens at every business, but for construction companies, the close has a distinctive set of extra steps — closing out pay applications, updating the WIP schedule, accruing retainage, reconciling job costs to general ledger, and processing estimate revisions — that extend the timeline and raise the stakes.
For a mid-market GC, the close typically runs 5-10 business days after month end. The goal of most finance teams is to compress that toward the faster end — every day saved means management has financial information sooner, which means decisions happen on more current data. The close is also the primary quality gate for the company's financial reporting: errors that happen during the month get caught (or missed) during the close.
A completed close produces a specific set of deliverables. For construction companies, these typically include:
Standard outputs of a construction month-end close
- Income statement — revenue, cost of revenue, overhead, and net income for the month
- Balance sheet — assets, liabilities, and equity at month end
- Cash flow statement — how cash moved through the business during the month
- WIP schedule — every active contract's status including earned revenue, over/under billing
- Job cost reports — cost detail by project for PMs and cost engineers to review
- AR aging and AP aging — what's owed to and from the company
- Bank reconciliations — confirming book cash matches bank cash
- Sub-ledger reconciliations — confirming detail sub-ledgers (AR, AP, job cost) agree with GL
A well-run construction close follows a day-by-day rhythm. The specific activities vary by company, but the structure is consistent across operations with mature close processes.
The day's work focuses on cutoff. The AP team processes all invoices received through the day, ensuring everything dated through month end is captured. The AR team finalizes the month's billings — pay applications that were going out this cycle need to be out. Payroll for the final partial-period is calculated so payroll accruals can be recorded.
Focus shifts to accruals — recording expenses that were incurred but not yet invoiced. Construction accruals are extensive: unbilled subcontractor work, materials delivered but not yet invoiced, equipment usage for the month, partial-period wages, employee benefits accruals, insurance accruals, and pay-app accruals for subs whose invoices arrive after cutoff.
PMs update cost-to-complete estimates for every active project. Estimator reviews significant variances. Job costs are reconciled against committed POs and subcontracts to ensure nothing is missing. Revenue is recognized using percentage-of-completion based on the updated cost estimates.
AR sub-ledger is reconciled to GL. AP sub-ledger is reconciled to GL. Job cost sub-ledger is reconciled to GL. Inventory (if any) is counted and reconciled. Bank accounts are reconciled. Any discrepancies are researched and corrected.
The trial balance is finalized. Financial statements (P&L, balance sheet, cash flow, WIP) are generated. Controller reviews for reasonableness. Supporting schedules are compiled. Package is prepared for CFO and leadership review.
Companies that regularly close in 5 days or fewer have a specific cultural pattern: the close isn't a scramble at the end of the month, it's the culmination of continuous accounting discipline throughout the month. The faster close isn't achieved by working harder at the end; it's achieved by not letting things pile up.
AP has a distinct role in month-end close. The AP team's cutoff activities determine what expense and liability records are captured in the month versus what rolls into the next month. The key AP activities in close:
AP month-end close activities
- Cutoff date established — invoices dated through the cutoff are in, later ones are out
- All invoices received through cutoff entered and approved
- Pay application cutoff — sub pay apps through the cutoff processed
- Accrue known but unbilled expenses — materials delivered without invoice, subs' unbilled work, recurring services
- Reconcile the AP sub-ledger to GL control account
- Run AP aging report for month-end balance
- Process any credit memos received through cutoff
- Confirm that stranded invoices (held for compliance, dispute, or approval) are properly classified
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Accruals are the entries that record expenses incurred but not yet invoiced. In construction, getting accruals right is disproportionately important because so much month-end work physically happens before the vendor invoice arrives. Specific accruals that matter most:
Critical construction month-end accruals
- Subcontractor accruals — work performed by subs through month end but not yet billed via pay app
- Material accruals — materials delivered in the current month that will be billed in the next
- Equipment accruals — rental or lease period spanning month end
- Labor accruals — work performed through month end that falls in the next payroll cycle
- Utility accruals — utility usage through month end that won't be billed for 2-4 weeks
- Professional services accruals — legal, accounting, and consulting work performed but not yet billed
- Interest accruals — interest on debt, credit lines, bonds
Every sub-ledger in the accounting system has to agree with its GL control account — otherwise the financial statements can't be trusted. Construction companies typically run four key reconciliations every close.
Critical month-end reconciliations
- AR sub-ledger to GL — total of customer receivables equals AR control account balance
- AP sub-ledger to GL — total of vendor payables equals AP control account balance
- Job cost sub-ledger to GL — total costs on all jobs equal Cost of Revenue + unbilled WIP adjustments
- Bank reconciliations — book cash matches bank cash after adjusting for outstanding items
- Intercompany reconciliations (for multi-entity companies) — intercompany receivables and payables eliminate to zero
The WIP close is distinctive to construction. For each active project, the accounting team confirms the contract amount (including any change orders approved during the month), updates the total estimated cost (based on PM's current view), calculates percent complete and earned revenue, and books the revenue recognition entry. Any project now forecasted to finish at a loss has the full projected loss recognized in the current period.
The WIP close is where cumulative catch-up adjustments happen. A project whose total estimated cost increased by $300K this month has earned revenue that's lower than last month relative to what was previously recorded — and the adjustment flows through the current period. The close is when these adjustments are finalized and reflected in the financial statements.
Companies that want to compress their close timeline typically tackle three areas first:
The highest-ROI close compression investments
- Automated AP and accrual entry — pre-accrual of recurring expenses, automated matching and coding reduces invoice backlog at cutoff
- Real-time job cost posting — invoices coded and posted as they're received (not batch-processed at month end)
- Continuous reconciliation — key reconciliations done weekly rather than only at month end
- Checklist-driven process — every close activity has a documented owner, due date, and status tracked throughout
- Soft close discipline — interim reviews mid-month catch issues before they become close-blocking problems
AP automation specifically compresses the close in several ways. Invoices arrive and are processed continuously rather than piling up for month-end data entry. Automated 3-way matching resolves exceptions in real time rather than creating month-end review queues. Integration with job cost systems means coding is applied automatically and posted immediately, so job costs are always current. The accruals that historically required manual computation become derivative of automated data — the system already knows which subs have pay apps pending, which POs have received goods without invoices, and which equipment rentals span the cutoff.
Month-end close is the most important recurring workflow in construction accounting. It converts the month's transactions into reliable financial statements, ensures reconciliations hold, updates the WIP that lenders and sureties depend on, and gives management current information for decisions. A disciplined five-day close produces better data faster; a scrambling two-week close produces worse data slower. The difference between the two is almost always the quality of the continuous accounting processes during the month, not the heroics applied at month end.
Written by
Sarah Blake
Head of Product
Former AP Manager at a $200M construction firm, now leads product at Covinly. Writes about what AP teams actually need from automation — beyond the marketing promises.
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