Accounts payable is the total amount a company owes to its suppliers and vendors for goods or services received but not yet paid for. It appears as a current liability on the balance sheet and is a key lever in working capital management — the longer a company manages its payables, the more cash it retains for operations and growth.
What It Is #
Every time a business receives an invoice from a supplier, it creates an accounts payable entry. That entry records the obligation to pay a specific amount by a specific date. Until that payment is made, the amount sits in accounts payable — a short-term debt to the supplier.
Accounts payable affects cash flow, supplier relationships, and the company’s overall working capital position. Businesses that manage AP well pay suppliers on time, maintain healthy DPO, and avoid both early payment (which drains cash) and late payment (which damages relationships and incurs penalties).
In supply chain finance, AP is the starting point for most buyer-side programmes. Reverse factoring, dynamic discounting, and extended payment terms all operate within the AP process. They transform what was traditionally a passive obligation into an active working capital tool.
The AP Lifecycle #
- Purchase Order Issued — buyer creates a PO outlining goods, quantities, and agreed prices
- Goods or Services Received — supplier delivers; buyer records a goods receipt
- Invoice Received — supplier issues an invoice matching the PO
- Three-Way Match — AP team verifies the invoice against the PO and goods receipt
- Invoice Approved — confirmed as valid and entered into the payment queue
- Early Payment Decision — buyer decides whether to pay early (via dynamic discounting) or on standard terms
- Payment Executed — funds transferred to supplier on or before the due date
- Reconciliation — payment recorded and AP entry closed
Key AP Metrics #
| Metric | What It Measures | Target Direction |
|---|---|---|
| Days Payable Outstanding (DPO) | Average days to pay suppliers | Higher (within reason) |
| Invoice Processing Time | Days from receipt to approval | Lower |
| Straight-Through Processing Rate | % of invoices auto-approved | Higher |
| Duplicate Invoice Rate | % of invoices flagged as duplicates | Lower |
| On-Time Payment Rate | % of invoices paid by due date | Higher |
AP and Working Capital #
AP is the working capital lever most directly under a company’s control. Unlike DSO — which depends on customer payment behaviour — DPO is determined by the buyer’s own payment decisions and supplier negotiations.
Extending DPO from 30 to 60 days on €80 million in annual supplier spend frees up approximately €6.6 million in working capital (30 extra days × €80M ÷ 365). This cash can be redeployed into operations, inventory, or growth without any external financing.
The challenge is that extending DPO places cash flow pressure on suppliers. Supply chain finance programmes — particularly reverse factoring — resolve this tension by allowing buyers to extend DPO while suppliers still access early payment through the programme.
AP Automation #
Manual AP processes are slow, error-prone, and expensive. Automating AP reduces the cost per invoice from an industry average of €12–€15 to under €3, while accelerating approval cycles from days to hours.
Key automation capabilities include:
- OCR and data capture — automatic extraction of invoice data without manual entry
- Three-way matching — automatic reconciliation of invoices against POs and goods receipts
- Exception routing — flagging discrepancies for human review while auto-approving clean invoices
- ERP integration — seamless posting to SAP, Oracle, Microsoft Dynamics, or other systems
- Early payment triggers — automatic identification of invoices eligible for dynamic discounting or SCF programmes
AP Fraud Prevention #
AP fraud is a significant risk, with common schemes including:
- Duplicate invoices — submitting the same invoice twice
- Vendor impersonation — fraudsters changing supplier bank details to redirect payments
- Fictitious vendors — creating fake supplier accounts
- Invoice manipulation — altering invoice amounts after approval
Controls include segregation of duties, bank detail change verification protocols, and automated duplicate detection.
AP vs. Accounts Receivable #
| Accounts Payable | Accounts Receivable | |
|---|---|---|
| Represents | Money the company owes | Money owed to the company |
| Balance sheet | Current liability | Current asset |
| Working capital goal | Maximise DPO (pay later) | Minimise DSO (collect sooner) |
| SCF solution | Reverse factoring, dynamic discounting | Invoice financing, factoring |