Accounts payable: Definition, process, 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 covers unpaid amounts due to anyone who has already delivered something to your company.

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.

So what does accounts payable mean inside a company? The term also refers to the team or function that verifies, approves, and pays supplier invoices. That work sits inside the wider procure-to-pay (P2P) cycle, which starts with a purchase request and ends when the vendor is paid, and most companies split it across a few roles, from AP clerks to AP directors.

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.

Accounts payable vs. accrued expenses and notes payable

All three are short-term obligations, but each one starts differently. AP covers invoices you've received, accrued expenses are costs you've incurred but haven't been invoiced for yet, and notes payable are formal borrowings backed by a written promise to repay.

For example, say an $8,000 December utility bill doesn't arrive until January. You accrue the cost at year-end, then move it to AP once the invoice lands.

Trade payables are the subset of AP tied to goods bought for production or resale, such as raw materials and inventory.

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.

The accounts payable process picks up once a purchase order and a vendor invoice exist, as one stage of the wider P2P cycle. A typical accounts payable workflow runs in five steps:

1. Receive and record invoices

Collect vendor bills through channels like email or your accounts payable system, and record their details in your accounting software. Before you record each invoice, check it for duplicates and confirm the vendor exists in your vendor master file.

2. Match and code invoices

Use 3-way matching to compare purchase orders, receiving reports, and vendor invoices before processing payment. Two-way matching compares only the PO and the invoice, while 3-way matching adds the receiving report to confirm you got what you ordered.

AP also assigns GL codes, the account numbers that categorize each transaction, so every bill posts to the right expense or asset account.

3. Route invoices for approval

Once verified, route the invoice to the appropriate managers or departments for approval. Most teams set routing rules by invoice amount, department, or vendor type, so a $500 office supply bill might need one sign-off while a $50,000 equipment invoice needs two.

Ramp's AP Agents code invoices from your own coding history and recommend approvals, and finance teams accept roughly 90% of those recommendations.

4. Schedule and 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.

5. Reconcile and report

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.

For example, a $12,000 packaging invoice arrives on day 1, gets matched to its PO and receiving report on day 2, is approved on day 4, and is paid by ACH on day 28, inside net-30 terms.

Accounts payable roles and responsibilities

The AP team owns the invoice-to-payment cycle, and most accounts payable duties split across a few common roles. Titles vary by company size, but a typical accounts payable job description falls into one of these:

• AP clerk or associate: Enters invoice data, applies GL codes, and schedules payments
• AP specialist: Processes invoices, reconciles vendor statements, and handles vendor communication
• AP manager: Oversees the team, enforces policy compliance, and leads process improvement
• AP director: Sets AP strategy and keeps payables aligned with treasury and procurement

Payable work at every level calls for attention to detail, accounting fundamentals, ERP fluency, and clear vendor communication. Automation shifts that work from data entry toward analysis: Ramp Bill Pay users process bills with 86% fewer clicks than legacy AP tools.

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 Jan. 1: $80,000
• AP balance on Dec. 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 an average AP of $100,000 and COGS of $660,000:

DPO = ($100,000 / $660,000) * 365 ≈ 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

Here's how those controls map to the most common AP risks:

For example, an email asks you to update a supplier's bank account before a $40,000 payment. A callback to the vendor's number on file, required by your vendor master file policy, confirms the request is fake.

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 with lower invoice volumes may need a simpler tool than those handling thousands of invoices a month. 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 flags potential fraud using 60+ signals.
• 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

Manual invoice coding, chasing approvals, and pushing payments slow down every stage of AP. Ramp Bill Pay cuts that manual effort by handling AP end-to-end, from invoice intake to ERP sync. You can run it as a standalone product or alongside Ramp's cards, expense management, and procurement.

AP Agents code line items, check for fraud, recommend approvals, and complete card payments. You stay in control while the clicks go away.

• AI invoice processing: Capture invoice data with 99% OCR accuracy on invoice headers and line items
• Approval workflows: Set custom routing by amount, department, or vendor type, plus AP Agent approval recommendations
• Flexible payment methods: Pay vendors by ACH, check, card, or wire from one place
• Two-way ERP sync: Keep bills and payments in sync with NetSuite, Sage Intacct, QuickBooks, and Xero

Finance teams using Bill Pay process invoices 2.4x faster than legacy software¹, and 95% of businesses reported improved visibility². That means you spend less time keying in data and more time managing cash and closing the books.

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