The Accounts Payable Process, Step by Step (for Owners)

TL;DR

• The accounts payable process has five steps: receive, verify, approve, pay, and record each invoice. Skip one and money leaks.
• Verification is where duplicates get caught. APQC puts duplicate or erroneous payments at a median of 1.5% of all disbursements.
• Approval is where the process stalls, usually because it lives in email threads with no clear owner.
• Paying on the agreed date, not early and not late, protects both your cash and the supplier relationship. Large UK businesses still paid 15% of invoices late in 2025 (gov.uk).
• The manual version costs about 9.40 USD per invoice and takes 9.2 days on average (Ardent Partners, 2025). Best-in-class teams get that down to 2.78 USD.

The accounts payable process is how a business pays what it owes its suppliers, and it runs in five steps: receive the invoice, verify it, approve it, pay it, and record it. Followed in that order, the process is what stops you paying a bill twice, paying one that was never yours, or missing one until the supplier chases. Most owners without a finance team already run some version of this in their heads. The catch is that each manual invoice still costs an average of 9.40 USD to process and takes 9.2 days to clear, according to Ardent Partners' 2025 State of ePayables, and every one of those days is a point where something can slip.

What the accounts payable process actually is

Accounts payable is the money you owe suppliers for goods and services you have received but not yet paid for. The accounts payable process is the repeatable set of steps that takes each of those supplier invoices from arrival to paid and recorded. If you are still fuzzy on the term itself, start with what accounts payable actually is and come back, because the process only makes sense once the definition is clear.

Two quick boundaries. This process covers supplier bills, not payroll and not the money customers owe you, which sits on the accounts receivable side. And it is not the same as procurement. Procurement is deciding what to buy and raising the order. Accounts payable picks up once the invoice for that order lands.

Step 1: Receive and capture the invoice

Every invoice has to enter your system before anything else can happen. In a small business they arrive in a mess of channels: PDF attachments in one inbox, an inline HTML bill from a software vendor, a paper invoice a supplier handed over, a link to a vendor portal.

Capture means getting all of them into one place with their key details recorded: supplier, invoice number, date, amount, due date, and what it was for. This step sounds trivial and is where the most damage starts. An invoice that never gets captured cannot be verified, approved, or paid, and you usually only find it when the supplier stops delivering. Whatever else you fix, fix capture first, because every later step inherits the gap.

Step 2: Verify the invoice before you trust it

A received invoice is a claim, not a fact. Verification is where you check the claim before money is on the line.

The classic control is three-way matching: you line up the invoice against the purchase order (what you agreed to buy) and the goods receipt (what actually arrived). If all three agree on quantity and price, the invoice is clean. For services with no physical delivery, a two-way match against the order or contract does the same job. This is also where you catch duplicates, the same bill arriving twice with a tweaked date or reference. APQC benchmarks duplicate or erroneous payments at a median of 1.5% of all disbursements, which is real money for any business paying hundreds of invoices a year.

Step 3: Get the invoice approved

Once an invoice is verified, someone with authority has to say yes to paying it. In a large company that follows an approval matrix by amount and department. In a small business it is often just you, or the person who owns that budget line.

Simple in theory, and the single biggest source of delay in practice. Approvals stall when the invoice is stuck in one person's inbox, when nobody knows whose sign-off it needs, or when the approver is away and there is no backup. Ardent Partners put the average invoice exception rate at 14% in 2024, and exceptions are what pull invoices out of the smooth path and into the pile that waits. If this is your bottleneck, it is worth understanding why invoice approvals get stuck before you try to speed them up.

Step 4: Pay on the right date

Approved invoices get scheduled and paid according to their terms. The goal is not to pay as fast as possible. It is to pay on the agreed date.

Pay too late and you risk fees, stopped service, and a supplier who moves you down the priority list. Large UK businesses still paid 15% of their invoices late in 2025, taking an average of 32 days to settle, according to gov.uk payment practices data, so late payment is common and costly. Pay too early, though, and you give up cash you could have held. That trade-off is measured by days payable outstanding, which tracks how long, on average, you take to pay. The healthy target is not zero and not maxed out, it is paying exactly on terms.

Step 5: Record and reconcile

Paying the invoice is not the end. The final step is recording it in your books and reconciling it, so your accounts match reality.

That means posting the bill and the payment to the right accounts, keeping the invoice on file for VAT and audit, and matching what left the bank against what you recorded. Done well, this keeps your accounts payable balance accurate, so at any moment you know what you still owe. Done badly, or skipped, and your books drift from your bank, month-end becomes an investigation, and you lose the audit trail exactly when a tax authority asks for it.

Where the process breaks for owners without an AP team

Here is the honest part. On paper these five steps are simple, and nobody struggles to understand them. The process breaks in practice for one reason: when it is manual and spread across inboxes, every step depends on a human remembering to do the previous one.

The first domino is almost always capture. An invoice that arrives as an HTML email, or lands in a shared inbox nobody owns, never gets logged, so it is never verified, never approved, and quietly becomes a missed payment or a duplicate later. The rest of the process is only as reliable as the moment the invoice comes in. This is why automating the accounts payable process tends to start at the front, with capture, rather than at approval or payment.

That front step is exactly the layer Gennai works on. It reads invoices straight out of your inbox, pulls the key fields, flags likely duplicates, and pushes clean records into Xero, QuickBooks, or Holded, so the verify, approve, pay, and record steps all start from complete data instead of a half-full inbox. The process stays yours. The manual catching just stops being the weak link.

Frequently asked questions

What is the difference between the accounts payable process and AP automation?

The process is the five steps every business follows to pay suppliers: receive, verify, approve, pay, record. Automation is using software to do the manual parts of those steps, especially capturing invoices and matching them. The steps stay the same; automation changes how much of the work is done by hand.

What is three-way matching?

Three-way matching is a verification control that checks an invoice against the purchase order and the goods receipt. If all three agree on quantity and price, the invoice is approved for payment. It is the standard way to catch overcharges, wrong quantities, and invoices for things you never received.

Who approves invoices in a small business?

Usually the owner, or whoever owns the relevant budget. There is rarely a formal approval matrix, which is why approvals in small businesses often stall in one person's inbox. Even a simple rule, such as a second look above a set amount, adds control without slowing things down.

How is accounts payable different from procurement?

Procurement decides what to buy and raises the order. Accounts payable takes over once the invoice for that order arrives, and handles verifying, approving, paying, and recording it. Procurement is the buying side; accounts payable is the paying side.

The accounts payable process only works when every invoice makes it in. Gennai handles the first and hardest step for you, capturing supplier invoices from your inbox and filing them as clean records in Xero, QuickBooks, or Holded, duplicates flagged before you pay them. Start free, no card required, and watch a month of invoices land in one place.