What is accounts payable (AP)? Definition and examples

Accounts payable (AP) refers to the short-term debts your business owes for goods or services bought on credit.

Your AP team manages these obligations from the moment an invoice arrives until payment clears, usually within 30, 60, or 90 days. Tracking AP well tells you what you owe, protects supplier relationships, and keeps your working capital healthy.

What is accounts payable?

Accounts payable (AP) is the short-term money your business owes suppliers, contractors, and vendors for goods or services purchased on credit. It represents unpaid amounts due to any entity that has provided your company with something it has already received.

AP appears on your balance sheet as a current liability because it's a debt your business must pay within 1 year or within its normal operating cycle. Payment is typically due in 30, 60, or 90 days, depending on the vendor's terms.

AP tracks outstanding invoices for items like raw materials, inventory, utilities, subscriptions, and professional services. Clear AP records help you understand what you owe, plan cash outflows, avoid missed payment deadlines, and maintain healthy working capital.

Key components of accounts payable

The accounts payable team manages the invoice-to-payment process and keeps it running smoothly. An efficient AP workflow relies on several main components:

• Invoice: Document that outlines how much you owe a supplier or vendor for goods or services
• Purchase order: Document your company sends to a supplier requesting goods or services, with details on quantities, prices, and delivery terms; used as a reference when verifying invoices
• Payment terms: Agreed expectations for due dates, payment options, and any available discounts
• Vendor information: Supplier profiles that include contact details, tax forms, and vendor IDs
• General ledger (GL) code: Numbering system that categorizes financial transactions for accurate reporting and analysis

Managing accounts payable has a direct impact on your cash flow and liquidity, influencing how much cash you have available for day-to-day operations. Thoughtful payment timing helps keep cash levels healthy, preserve flexibility, and create opportunities to capture early payment discounts.

Poor accounts payable management can lead to late payment penalties, cash shortages, and strained supplier relationships, all of which can disrupt operations. Strong AP practices also help balance payment schedules with revenue collection, which is especially important during seasonal slowdowns or economic uncertainty.

Examples of accounts payable

Accounts payable covers any supplier bill you've received but haven't paid yet. Everyday purchases land in AP, and each one hits your books differently.

1. Raw materials and inventory: A manufacturer receives a $25,000 invoice for steel on net-30 terms. This purchase increases an asset (inventory) until the materials are used or sold.
2. Professional services: Your legal firm sends a $9,000 invoice for contract work on net-15 terms. Services like legal or IT hit the income statement as an expense.
3. Utilities and rent: The monthly electricity bill arrives at $3,200, due in 20 days. Utilities are period costs that flow straight to the income statement.
4. Software subscriptions: You buy a $12,000 annual software license on net-30 terms. The cost is typically expensed over the subscription period.
5. Equipment and CapEx: A vendor invoices you $40,000 for warehouse machinery on net-45 terms. This purchase increases a fixed asset rather than an expense.

Accounts payable vs. accounts receivable

Accounts payable is money you owe suppliers; accounts receivable is money customers owe you. An easy way to remember the difference between accounts payable and receivable: "AP for pay, AR for receive." The two are mirror images of the same credit transaction, since one company's payable is another company's receivable.

Managing both sides well keeps your cash conversion cycle short: you collect receivables promptly while timing payables to hold onto cash as long as your vendor terms allow.

Is accounts payable an asset or a liability?

Accounts payable is a current liability on your balance sheet, not an asset and not an expense. It represents a short-term obligation you must settle, usually within a year, so it sits alongside other current liabilities like accrued expenses and short-term debt.

Expenses and payables are easy to confuse. An expense records the cost of goods or services on your income statement and reduces net income. Accounts payable records the obligation to pay for those goods or services on your balance sheet. When the invoice for an expense arrives, you often book both at once: the expense on the income statement and the payable on the balance sheet.

How to record accounts payable

Recording accounts payable uses double-entry bookkeeping. When an invoice arrives, you credit accounts payable to log the obligation. When you pay, you debit accounts payable to clear it and credit cash to reflect the outflow.

Consider a $5,000 inventory invoice on net-30 terms:

When the invoice arrives:

• Debit: Inventory $5,000
• Credit: Accounts payable $5,000

When you pay 30 days later:

• Debit: Accounts payable $5,000
• Credit: Cash $5,000

Ramp Bill Pay offers real-time, two-way ERP sync with NetSuite, QuickBooks, Xero, and Sage Intacct that posts these entries automatically and keeps your ledger audit-ready.

How to process accounts payable

Accounts payable processes include receiving invoices, verifying their accuracy, routing them for approval, and making payments on time. Clear steps help your team stay organized and reduce the risk of delays or errors.

Step 1: Record invoices

Collect vendor bills through channels like email or your accounts payable system, and record their details in your accounting software.

Step 2: Verify expenses and get approval

Use 3-way matching to compare purchase orders, receiving reports, and vendor invoices before processing payment. Once verified, route the invoice to the appropriate managers or departments for approval.

Step 3: Execute payment

Schedule payments based on vendor terms and your cash flow needs. Disburse funds using the vendor's preferred method, such as check, ACH, or wire transfer.

Step 4: Reconcile inconsistencies

Update your general ledger to reflect the payment and ensure all transactions are properly documented. Work with your AP team to resolve any issues or discrepancies.

How to calculate the accounts payable turnover ratio

The accounts payable turnover ratio shows how quickly your company pays its suppliers by measuring how many times you pay off your average AP balance in a year. A higher ratio means you pay vendors more frequently, while a lower ratio indicates slower payments.

The AP turnover ratio formula is:

AP turnover ratio = Total supplier purchases / Average accounts payable

To find average AP, add the beginning and ending balances for the period and divide by 2:

Average AP = (Beginning AP + Ending AP) / 2

Consider this example:

• Total supplier purchases: $500,000
• AP balance on January 1: $80,000
• AP balance on December 31: $120,000
• Average AP: ($80,000 + $120,000) / 2 = $100,000
• AP turnover ratio: $500,000 / $100,000 = 5

This means your business pays off its average accounts payable balance five times per year.

Understanding AP turnover ratio

The AP turnover ratio offers insight into your cash management practices and vendor relationships. A high ratio may suggest you're paying bills more quickly than necessary and forgoing the chance to use that cash elsewhere. A low ratio can indicate cash flow challenges or that you're extending payments to preserve liquidity.

It's helpful to compare your ratio to industry benchmarks and track it over time to identify trends. Pair it with other metrics, such as the cash conversion cycle, to understand how accounts payable fits into your broader working capital management.

Days payable outstanding (DPO)

Days payable outstanding (DPO) is the companion metric to AP turnover, and it translates that ratio into an average number of days. DPO tells you how long, on average, your business takes to pay its suppliers, which makes it easy to compare against your vendor terms.

The DPO formula uses your cost of goods sold (COGS) for the period:

DPO = (Average accounts payable / COGS) * 365

Using the same $100,000 average AP from above, and assuming COGS of $660,000:

• DPO = ($100,000 / $660,000) * 365
• DPO ≈ 55 days

So your business takes roughly 55 days to pay a typical supplier bill. A DPO close to your standard net terms usually signals healthy payment timing, while a much higher figure can strain vendor relationships.

Accounts payable best practices

Use a consistent method for receiving invoices, approving them, processing payments, onboarding vendors, and reconciling the ledger at month-end. For example, an AP email inbox or vendor portal can centralize incoming invoices and reduce the risk of missed documents or duplicate submissions.

Standardization also includes keeping an organized vendor master file with contracts, payment terms, contact information, W-9s, and historical invoices to minimize errors and compliance issues.

Implement compliance and internal controls

Compliance ensures your financial process follows laws, regulations, and accounts payable policies. Internal controls help prevent errors, fraud, and mismanagement by adding safeguards throughout the workflow. Key practices include:

• Segregation of duties: Assign different people to key responsibilities. The person who approves invoices should not also process payments, which reduces fraud risk.
• Authorization hierarchies: Set approval thresholds by invoice amount so smaller purchases require fewer sign-offs than larger ones
• Vendor master file controls: Verify and approve changes to vendor information before updating payment details
• Documentation retention: Maintain accurate records, such as invoices, purchase orders, goods receipts, and payment confirmations, to support audits and resolve disputes
• Clear policies and procedures: Document AP steps and update them regularly, then train your team to ensure consistent execution

Strong controls create a reliable AP process, support accurate reporting, and build trust with stakeholders.

Conduct regular audits

Routine accounts payable audits confirm that invoices are processed accurately, approvals follow policy, and payments align with vendor terms. Regular reviews also help detect unusual patterns or discrepancies early, preventing costly issues and reinforcing compliance.

Audits often include tracking KPIs such as invoice processing time, average days payable outstanding (DPO), error rates, and discount capture. Reviewing these metrics highlights inefficiencies and supports continuous improvement across the AP workflow.

Benefits of automating accounts payable

Automating accounts payable transforms how you manage invoices and payments, reducing manual work and improving accuracy across the entire workflow. Automation reduces AP errors, eliminates repetitive tasks, and streamlines approvals and payments. It can also improve cash flow management and free up time for more strategic work.

Here's a close look at the top AP automation benefits:

Calculating ROI for AP automation

Before switching to an automated AP system, you should calculate the ROI on using AP software to confirm it's worth your time.

Your ROI using AP automation can be calculated by first adding up your estimated yearly savings on labor, error reduction, early discounts, late fees, and paper processing. Then, determine the total cost of purchasing and renewing AP licensing software every year.

You can then plug these numbers into the classic ROI formula:

ROI = ([Annual savings – Annual costs] / Annual costs) * 100

So if your company estimates $20,000 in savings every year and the cost of implementing AP software is $10,000 per year, your ROI would be 100%.

ROI = ([$20,000 – $10,000] / $10,000) * 100 = 100%

A positive ROI means the savings outweigh the costs; the higher the percentage, the greater the return.

Features of AP automation software

AP automation software features that are right for you depend on your business's size, industry, and specific needs. For instance, companies processing fewer than 500 invoices a month may require a simpler tool than those handling thousands. However, most AP automation providers include these essentials:

• OCR technology: Scans invoices and extracts key data, such as vendor details, charges, and due dates; standardizes data capture to improve accuracy and reporting reliability
• Automated matching: Uses 2- or 3-way matching to compare invoices against purchase orders, receipts, or contracts to ensure details align; prevents overpayments and duplicate payments
• Electronic approvals: Routes invoices digitally to the appropriate approvers; helps maintain deadlines and create transparency across the approval process
• Invoice verification: Checks for duplicates, fraud indicators, or policy violations; enforces internal controls to reduce security and compliance risks
• Vendor portal: Provides suppliers with a self-service platform to onboard, submit invoices, track payment status, and update their information; supports transparency and improves vendor satisfaction
• Integration capabilities: Connects your AP automation software with accounting systems, procurement tools, and banking platforms; keeps financial records accurate with real-time syncing
• Tracking and storing AP documents: Provides strong AP document management to secure invoices, approvals, receipts, and audit logs in a centralized digital location; improves audit readiness and reduces the risk of lost or damaged documents
• Analytics reporting: Collects and analyzes AP data, such as spending patterns and vendor performance; tracks KPIs to optimize AP efficiency and flag compliance issues

You may also want to evaluate customer support and the software's total cost, not just the initial price.

Common accounts payable challenges and how to solve them

Your accounts payable department faces several challenges that can slow down invoice processing or create financial risks. Common issues include:

• Invoice errors: Manual data entry can lead to typos, duplicate invoices, or mismatched amounts. Automated invoice capture and matching validate data before it enters the workflow.
• Late payments: Invoices may slip through the cracks, leading to vendor dissatisfaction. An automated AP schedule ensures invoices are processed and paid on time.
• Vendor disputes: Discrepancies between purchase orders and invoices can delay payments. Maintain clear communication and accurate vendor records to reduce inconsistencies.
• Fraud and compliance risks: Stay current on regulations and use fraud detection tools to catch fraudulent invoices, unauthorized purchases, or policy violations. Ramp's AP Agent screens every invoice across 60+ fraud signals before it reaches approval.
• High invoice volume: As your company grows, you'll manage more purchase orders, vendors, and invoices. AP automation helps handle increased data entry and approvals without slowing down operations.

By tackling these challenges with automation and clear processes, you'll build an AP function that's faster, more accurate, and easier to scale.

Automate accounts payable with Ramp Bill Pay

Ramp Bill Pay handles your accounts payable end-to-end with zero manual work. Four AP Agents manage invoice coding, spot fraudulent transactions, generate approval summaries, and process vendor payments. Its OCR achieves 99% accuracy on line-item details and moves invoices 2.4x faster than older AP platforms for a touchless experience.¹

Run Ramp Bill Pay as a standalone system, or connect it with Ramp's corporate cards, expense management, and procurement tools for unified spend control. 95% of businesses report better payables visibility after switching to Ramp.²

Top Ramp Bill Pay features

• Intelligent invoice capture: Digitizes invoice data across all line items with 99% accuracy
• Automated PO matching: Compares incoming bills to purchase orders using 2-way and 3-way reconciliation, flagging discrepancies before authorization
• Four AP Agents: Categorize invoices, scan for fraudulent activity, compile approval documentation, and initiate card-based payments
• Custom approval workflows: Route invoices by department, amount thresholds, or vendor type
• Roles and permissions: Maintain appropriate segregation of financial responsibilities
• Payment methods: ACH, corporate cards, checks, or wire
• International payments: Pay vendors across 185+ countries
• Batch payments: Execute multiple vendor disbursements simultaneously rather than individually
• Real-time ERP sync: Maintain bidirectional synchronization of vendor information with leading accounting platforms including NetSuite, QuickBooks, Xero, Sage Intacct, and others, ensuring your books stay audit-ready
• Reconciliation: Complete your monthly close in less time through automatic transaction matching
• Bulk W-9 collection: Request all W-9s and e-consent at once instead of chasing vendors with one-off emails
• AI-powered 1099 prep: Ramp automatically maps bill pay spend to 1099-NEC and 1099-MISC boxes with calculations done for you
• One-click IRS filing: File directly with the IRS and eligible states in minutes with no extra portals or logins
• Vendor onboarding: Request and store W-9 forms, validate taxpayer identification numbers, and organize 1099 documentation in one system
• Vendor Portal: Offer suppliers a self-service hub where they can update banking details, monitor payment timing, and reach your AP staff directly
• Corporate cards: Provision physical and virtual payment cards with built-in spending guardrails
• Expense management: Scan receipts, reimburse employees, and enforce spending policies without juggling multiple tools
• Procurement: Review and authorize purchase requests before your team commits to spending

Why choose Ramp Bill Pay?

Ramp Bill Pay functions as a full AP system on its own. Or if you're looking to handle bill payments, card transactions, employee expenses, and procurement all in one place, Ramp can also unify these.

No matter your setup, Ramp Bill Pay processes AP with accuracy and speed that traditional platforms can't keep up with. Over 2,000 verified G2 reviews give Ramp a 4.8-star rating, and users consistently rank it as one of the easiest AP platforms to use. Finance teams rely on Ramp to cut out busywork, prevent costly mistakes, and finish month-end close faster.

Try an interactive demo to see how Ramp automates your accounts payable from invoice to payment.