Accounts payable outsourcing
Definition
Accounts payable outsourcing
Accounts payable outsourcing is the practice of hiring an external provider to process supplier invoices, approvals, and payments on behalf of a company. Firms use it to cut back-office cost, tighten audit trails, and free finance teams for higher-value work.
Most contracts cover the full invoice-to-pay chain — receipt, coding, matching against purchase orders, approval routing, payment execution, and month-end reporting. Providers work inside the client’s ERP or on their own middleware platform.
The model sits inside the broader finance and accounting outsourcing category. It shares delivery mechanics with back-office outsourcing but focuses on the payables ledger.
Pricing runs per-invoice or as a blended full-time-equivalent rate. Volume dictates the cheaper of the two, and hybrid deals mix both for seasonal spikes.
Key takeaways
- Invoices, approvals, payments, and reporting move to an external provider.
- Per-invoice pricing usually beats FTE-based pricing above 5,000 invoices a month.
- Contracts tie unit cost to SLA targets on cycle time and error rate.
- The Philippines and India dominate delivery for English-language AP work.
- Modern contracts automate 60–80% of invoice capture through OCR and machine learning.
How it works
A provider onboards by mapping the client’s chart of accounts, approval matrix, and payment calendar. Once live, invoices flow through a fixed pipeline — capture, validate, code, route, pay, and reconcile.
Capture starts with optical character recognition. Header and line-item data lands in the client ERP or a middleware layer. Human reviewers handle exceptions OCR cannot resolve, typically 15–25% of monthly volume.
Matching runs against the purchase order and goods receipt. Clean three-way matches pay automatically. Mismatches route to the buyer for reconciliation before the invoice enters the approval queue.
Payment execution respects the client’s cash calendar. Providers cut ACH, wire, or check runs — then post the entries and close the sub-ledger. Month-end reporting delivers aging, accrual, and DPO figures on the client’s schedule.
Pricing shapes the commercial model. The table below summarizes the three common structures.
| Pricing model | Best for | Typical unit cost |
|---|---|---|
| Per-invoice | Volumes above 5,000/month | $0.90–$3.50 per invoice |
| Blended FTE | Volumes under 3,000/month | $1,800–$3,500 per FTE per month |
| Hybrid | Seasonal spikes | Base FTE + overflow per-invoice |
The service-level agreement locks cycle-time, error-rate, and duplicate-payment targets. Providers report against those SLAs each month, and misses trigger service credits.
Examples
Named enterprises across banking, retail, and manufacturing run large accounts payable outsourcing engagements. Volumes range from 50,000 to more than one million invoices a month, depending on group size and industry.
Procter & Gamble’s shared services arm, headquartered in Manila, processes AP for the group’s global entities. The team has run invoice processing for internal business units since the early 2000s.
Diageo migrated its AP function to Genpact in 2016, consolidating regional teams into a single hub. The deal covers roughly 700,000 invoices a year across 40 markets.
Coca-Cola HBC uses Accenture for AP across Central and Eastern Europe. The engagement links directly to the group’s procure-to-pay transformation.
Mid-market firms increasingly outsource to Philippine specialists rather than the big global integrators. According to the Deloitte Global Outsourcing Survey, finance-function outsourcing continues to grow year on year.
Related terms
- Business process outsourcing: the parent category covering any delegated back-office function.
- Finance and accounting outsourcing: broader remit spanning AP, AR, GL, and reporting.
- Invoice processing: the specific workflow AP outsourcing centers on.
- Procure-to-pay: end-to-end cycle from requisition to payment.
- Back-office outsourcing: sibling model for non-customer-facing functions.
- Service-level agreement: the contract clause that governs AP performance.
- Shared services center: in-house alternative to third-party AP outsourcing.
FAQ
How much does accounts payable outsourcing cost?
Per-invoice pricing typically runs $0.90 to $3.50, while blended FTE rates land between $1,800 and $3,500 per month for offshore delivery. Volume, complexity, and geography drive the final number.
Which countries dominate AP delivery?
The Philippines and India lead the English-language market. Poland, Costa Rica, and Malaysia round out the top tier for regional and multilingual coverage.
Is accounts payable outsourcing safe for sensitive vendor data?
Yes, when the provider holds SOC 1 Type II and ISO 27001 certifications and the contract enforces data residency. According to the Institute of Finance and Management, controls testing is standard in AP outsourcing audits.
What is the biggest risk in accounts payable outsourcing?
Duplicate payments are the top risk, usually caused by weak three-way matching between purchase order, receipt, and invoice at the provider — strong buyers require system-based duplicate detection plus periodic supplier statement reconciliation before signing.
Browse the OA directory to shortlist accounts payable outsourcing specialists that match your invoice volume and industry.
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