What are AP Month-End Accruals?

Definition

AP Month-End Accruals are accounting entries used to recognize goods or services received during an accounting period when the related supplier invoice has not yet been recorded. They ensure expenses and liabilities are recognized in the period in which the underlying economic activity occurs, supporting accurate month-end financial reporting.

For example, if a company receives consulting services in September but the supplier sends the invoice in October, AP can estimate and record the September expense and accrued liability. The accrual is generally reversed or cleared when the actual invoice is recorded, preventing the expense from being recognized twice.

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How AP Month-End Accruals Work

The process starts by identifying goods and services received before the accounting cutoff but not yet represented by posted invoices. AP and accounting teams review purchase orders, receiving records, contracts, service confirmations, and supplier information to determine which obligations require accruals.

invoice processing provides an important source of information because invoices received near the period-end cutoff can determine whether an expense belongs in the current or subsequent period. A structured review can compare received invoices with goods receipts and open purchasing commitments before the accrual journal is prepared.

invoice matching can also help distinguish transactions that already have adequate invoice and receipt evidence from obligations that still require estimation. The workflow described in Vendor Invoice Processing 2025: AI Supplier Workflow Guide illustrates how capture, validation, matching, coding, approval, and posting connect within invoice workflows.

Accrual Calculation and Example

The basic accrual amount represents the best-supported estimate of the expense incurred but not yet invoiced. When the exact amount is known from a contract or service agreement, that amount can generally provide the basis for the journal entry. When the amount is not yet known, accounting teams can use available evidence such as contracted rates, completed service periods, quantities received, or historical usage.

For a simple example, assume a company receives consulting services throughout September under a fixed monthly contract of $12,500, but the September invoice arrives in October. The September accrual is:

Accrual = $12,500

The September journal entry records a $12,500 expense and a $12,500 accrued liability. When the October invoice is posted, the accrual can be reversed according to the organization's established accounting policy and the actual invoice can be recorded.

Month-End Accrual Workflow

A controlled month-end workflow should establish a cutoff date, identify uninvoiced obligations, estimate amounts, obtain appropriate review, post journal entries, and track reversals or subsequent clearing. The goal is to create a complete evidence trail from the underlying transaction to the financial statement impact.

  • Accrual discovery: Review open purchase orders, receiving records, contracts, service confirmations, and uninvoiced transactions.
  • Estimation: Determine the amount using available contractual, operational, or historical evidence.
  • Review: Confirm the business purpose, accounting treatment, entity, cost center, and supporting documentation.
  • Booking: Record the expense and corresponding accrued liability in the appropriate accounting period.
  • Reversal and clearing: Reverse or clear the accrual when the actual invoice or other settlement information is recorded.

accruals workflows can be supported by AP systems that identify uninvoiced obligations, prepare journal entries, maintain ERP posting records, and preserve audit trails for the close process.

GRNI, Cut-Off, and Invoice Timing

Goods received but not yet invoiced are commonly associated with GRNI, or goods received not invoiced. Reviewing GRNI balances at month-end helps accounting teams identify expenses that have been incurred even though supplier invoices have not reached AP.

Cut-off is equally important. An invoice received on October 2 may relate to goods or services received on September 29, meaning the underlying expense may belong in September. Conversely, an invoice received before month-end may relate to services that will be delivered in the following period and should not automatically create a current-period expense.

accounts payable teams should therefore evaluate the underlying receipt or service date rather than relying solely on the invoice date. This approach supports more accurate expense recognition and reduces unexplained movements between accounting periods.

Accrual accuracy depends on coordination between AP, procurement, receiving teams, and accounting. procurement records provide information about authorized purchases, contracted prices, and expected deliveries, while receiving records establish whether goods or services were actually received before the reporting cutoff.

When the underlying invoice subsequently enters the workflow, AP Invoice Matching Approval can provide a defined control point for confirming invoice information against relevant purchasing and receiving evidence before posting.

Accruals also connect with cash planning. Although an accrual records an accounting liability before payment occurs, subsequent settlement affects cash requirements. Coordinating accrual information with payments planning can therefore improve visibility into upcoming supplier obligations without treating an accrual as an immediate cash outflow.

AP Automation Software can connect invoice data, purchasing records, accrual calculations, journal entries, ERP posting, and supporting audit trails within a controlled AP workflow.

Controls and Best Practices

Strong AP month-end accrual practices depend on consistent cutoff policies, documented estimation methods, appropriate review, and timely reconciliation. Each accrual should be traceable to supporting evidence and assigned to the correct entity, account, cost center, and reporting period.

Payment Approval is a separate authorization stage from accrual recognition because recording an accrued liability does not itself authorize a supplier payment. Maintaining this distinction helps preserve clear responsibilities between accounting recognition and cash disbursement.

Month End Accruals should be reviewed against subsequent invoices and reversals so finance teams can identify estimation differences and improve future accrual calculations. Recurring variances can indicate that estimation assumptions, cutoff procedures, or source data need refinement.

Summary

AP Month-End Accruals ensure expenses and liabilities are recognized in the appropriate accounting period when supplier invoices have not yet been received or posted. A disciplined process covers accrual discovery, estimation, review, booking, reversal, and reconciliation, with GRNI and cutoff analysis providing important supporting evidence. Accurate accruals strengthen financial reporting, improve month-end close quality, and provide a clearer view of outstanding obligations.