Sop Accounts Payable Process

Standard Operating Procedure: Accounts Payable (AP) Process

1. Document Control & Revision History

2. Executive Summary & Scope

This SOP establishes the mandatory protocol for the lifecycle management of Accounts Payable (AP) within the enterprise. The objective is to maintain financial integrity, ensure accurate reporting, and enforce internal controls to mitigate fraud and leakage. This process covers the acquisition of goods/services through final vendor disbursement, adhering to GAAP, SOX compliance requirements, and Internal Revenue Code (IRS) 1099 reporting mandates.

3. Prerequisites & Tool Requirements

• Software Access: ERP System (e.g., SAP, NetSuite, or Oracle Financials) with authorized AP Clerk/Manager credentials.
• Documentation: Digital archive access (DocuSign/Adobe Sign for approvals, central repository for W-9s).
• Infrastructure: Dual-monitor workstation, high-speed secure VPN connectivity, and corporate network access.
• Compliance: Validated vendor master file, verified purchase order (PO) system, and standard digital signature authority.

4. Roles & Responsibilities (RACI Matrix)

Key: R = Responsible, A = Accountable, C = Consulted, I = Informed

5. Step-by-Step Operational Procedure

Phase 1: Ingestion & Validation

• Receive invoice via centralized AP email address or EDI integration.
• Validate invoice against existing PO (Price and Quantity variance check).
• Confirm vendor status in ERP is set to "Active" and tax documentation (W-9) is on file.

Phase 2: Processing & Matching

• Perform Three-Way Match: Verify PO, Receiving Report (Packing Slip), and Vendor Invoice.
• Flag discrepancies (price, quantity, or shipping) exceeding a 5% variance for immediate review.
• Enter GL coding string into the ERP system based on department budget allocation.

Phase 3: Approval & Scheduling

• Route invoice to the designated Department Head for digital signature.
• Schedule payment in the ERP based on net terms (e.g., Net 30) to optimize cash flow and capture early payment discounts.

Phase 4: Disbursement & Reconciliation

• Generate payment batch (ACH/Wire/Check) per the bi-weekly payment cycle.
• Controller reviews and authorizes final disbursement release.
• Reconcile sub-ledger to General Ledger post-payment.

6. Quality Assurance & Verification Criteria

• Thresholds: Any invoice >$10,000 requires secondary approval from Finance leadership.
• Accuracy Benchmark: 100% of invoices must have an attached digital PO or valid cost-center authorization.
• Turnaround Time: Invoice processing must be completed within 3 business days of receipt.
• Audit Trail: Every transaction must contain a timestamped digital audit log within the ERP system.

7. Practical Troubleshooting Scenarios

Scenario A: Invoice Missing Associated PO

• Detection: Automated system flag during ingestion.
• Corrective Action: Contact the requesting department head to provide a valid PO number or initiate a retrospective PO creation process. Do not process payment without a valid purchase authorization.

Scenario B: Three-Way Match Variance

• Detection: ERP highlights a difference between invoice price and PO price.
• Corrective Action: Place invoice in "Hold" status. Initiate "Purchasing Inquiry" to verify if a price adjustment was pre-authorized by the Procurement team. If authorized, update the PO in the ERP; if unauthorized, notify the vendor to submit a corrected invoice.

Scenario C: Vendor Banking Details Change Request

• Detection: Email request for wire instructions change.
• Corrective Action: High Risk. Do not process request via email. Utilize the "Verified Callback Procedure": Call the primary vendor contact at a previously confirmed phone number (do not use phone numbers from the email request) to authenticate the change request verbally. Document the verification in the ERP vendor record.