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Reconciliation
3 mins

What is accounts receivable (AR) reconciliation?

Accounts receivable (AR) reconciliation is the process of matching customer-related transaction records to corresponding entries in the general ledger.

Published
January 21, 2025
Last Update
October 19, 2026

Key takeaways

  1. AR reconciliation matches internal customer invoices, credit memos, and payments to entries in the general ledger.
  2. The goal is for the AR sub-ledger to align with the main accounting system.
  3. It prevents receivables from being overstated or understated on the balance sheet.
  4. Regular AR reviews can catch duplicate invoices, unauthorized credit memos, or unrecorded payments.

Introduction to accounts receivable reconciliation

Accounts receivable (AR) reconciliation is the process of matching internal records of customer-related transactions—such as invoices, credit memos, and payments—to corresponding entries in the general ledger. The goal is to ensure the amounts your customers owe (as reflected in your AR sub-ledger) accurately align with what is posted in the main accounting system.

Why is AR reconciliation important?

AR reconciliation is an essential control activity that verifies the accuracy of your company’s receivables. By regularly matching sub-ledger details to the general ledger, finance teams not only keep financial statements reliable but also gain valuable insights into cash flow, reduce errors, and maintain strong internal controls.

  • ‍Accurate financial statements: Consistent AR reconciliation prevents overstating or understating your receivables on the balance sheet, which is crucial for financial reporting accuracy.
  • ‍Cash flow insights: It helps you track who has or hasn’t paid, enabling better collection strategies and more accurate forecasting of incoming cash.‍
  • Fraud prevention and error detection: Regular AR reviews can catch duplicate invoices, unauthorized credit memos, or unrecorded payments, helping maintain financial control.

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Key steps in the AR reconciliation process

  1. Gather customer transaction data: Compile sales invoices, payments received, adjustments, and any related documents for each customer.
  2. Compare to general ledger: Match the recorded amounts from the AR sub-ledger (detailed customer-by-customer) with the relevant accounts in the general ledger.
  3. Identify discrepancies: Look for differences stemming from timing issues (e.g., unposted cash receipts) or data entry errors (like transposed digits).
  4. Investigate and correct: Determine the cause of any mismatch and make the necessary journal entries or corrections in your accounting system.
  5. Document and archive: Keep a record of reconciliations and corrections for future reference, audits, and compliance requirements.

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Common challenges with AR reconciliation

  • Delayed or partial payments: Payments might be broken into multiple installments or arrive later than expected, leading to timing mismatches.
  • Unapplied cash: Customer payments recorded without clear invoice references can leave open invoices that appear unpaid.
  • Credit memos and adjustments: Credits may not be properly linked to the right invoices, causing discrepancies in both AR and the general ledger.

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AR reconciliation best practices

  • Regular scheduling: Perform AR reconciliation frequently—monthly or even weekly for high-volume transactions.
  • Automation: Use accounting software features or specialized AR tools that can automatically match payments to invoices, reducing manual errors.
  • Clear policies: Establish standardized processes for issuing and applying credit memos, tracking partial payments, and writing off bad debts.
  • Segregation of duties: Ensure that the person issuing invoices is not the same person reconciling them, which helps mitigate fraud risk.

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How Atlar can help with your AR reconciliation

Atlar integrates directly with ERP systems like Oracle NetSuite and Microsoft Dynamics 365 Business Central as well as over 60 banks and payment providers. By centralizing and standardizing all of your financial data, including incoming payments, Atlar provides customers with a comprehensive transaction overview that greatly simplifies AR reconciliation.

Atlar customers can also automatically import bank statements from any bank directly to their ERP system, removing the need for manual imports. This can be done with any bank connected to Atlar, enabling customers to reliably sync financial data between their banks and their ERP. To learn more, get in touch with our team.

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Frequently asked questions

What is accounts receivable (AR) reconciliation?

AR reconciliation matches customer invoices, credit memos, and payments in the AR sub-ledger to the entries posted in the general ledger.

Why is AR reconciliation important?

It keeps receivables from being over- or understated, reveals how much cash is likely to arrive, and supports internal controls.

What problems does AR reconciliation uncover?

It surfaces unapplied or misapplied payments, duplicate invoices, missing credit memos, and overdue balances that need follow-up.

How does Atlar help with AR reconciliation?

Atlar matches incoming bank transactions with open receivables in your ERP, which speeds up cash application and highlights payments it could not match.

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