Setting Up an Accounts Payable Process

When a business is small, paying bills is easy: an invoice arrives, you pay it. Then the team grows, invoices land in three inboxes, someone pays the same bill twice and a supplier calls asking where their money is. A simple accounts payable process fixes that. This guide shows you how to set one up in an afternoon, with clear steps, approval rules and a template you can copy.

Accounts payable simply means the money your business owes to suppliers, contractors and service providers for things you have already received. Rent, software, stock, freelance designers, the cleaning company and the accountant all end up here. The amount itself is not the problem. The problem is the messy path each bill takes from arrival to payment.

A clear process gives you three things: fewer mistakes, better control of cash and calmer relationships with the people you buy from. It also makes year-end far easier, because every bill has a record, an approval and a payment date attached. You do not need software to start. A shared inbox, a spreadsheet and a weekly calendar slot will carry most small businesses a long way.

A quick note: this article is general information about bookkeeping and internal controls, not accounting, tax or legal advice. Rules on record keeping and payment terms vary by country, so check with a qualified accountant or bookkeeper for your situation.

What a good accounts payable process looks like

Every AP process, from a two-person studio to a large company, follows the same five stages. The only difference is how formal each one is.

• Receive. Bills arrive in one known place, not scattered across personal inboxes and desk drawers.
• Check. Someone confirms the bill is real, correct and matches what you ordered and received.
• Approve. The right person says yes, based on a simple rule you have written down.
• Pay. Approved bills are paid on a set day, by a set method, close to the due date.
• Record. The bill and payment are entered in your books and the paperwork is filed where you can find it later.

If you can say who does each stage and when, you have a process. If the honest answer to any stage is "whoever sees it first," that is where errors and late payments come from.

Step 1: create one front door for every bill

The single most useful change you can make is giving bills one place to arrive. For most small businesses that means a dedicated email address such as bills@ or invoices@ your domain, set up as a shared mailbox or a forwarding address that several people can see.

1. Create the address. Set up a bills or invoices mailbox and give at least two people access so it is never stuck behind one person's holiday.
2. Tell your suppliers. Send a short note asking them to send all future invoices to the new address and to include your purchase order or reference number if you use one.
3. Redirect the stragglers. When an invoice arrives anywhere else, forward it to the bills address rather than handling it on the spot.
4. Handle paper too. Scan or photograph paper invoices the day they arrive and send them to the same mailbox, then file the original.
5. Log each bill. Add every new invoice to a bills register (see the template below) or your accounting software within a day or two.

Step 2: check every bill before anyone approves it

Checking is where you catch the costly mistakes: duplicate invoices, wrong quantities, prices that crept up and, occasionally, fake bills sent by fraudsters. A quick, consistent check takes a minute per invoice.

The basic invoice check

• Is this a supplier you actually use, and is the business name and address what you expect?
• Does the invoice show a unique invoice number, a date, a due date and clear payment terms?
• Did you order this? Match it against an email, quote, contract or purchase order.
• Did you receive it? For goods, check the delivery note. For services, ask the person who used the service.
• Are the prices and quantities right, and do the totals add up?
• Have you already paid this invoice number? Search your bills register before going further.

Step 3: write a simple approval rule

Approval answers one question: who is allowed to say yes to spending this money? Without a rule, either the owner becomes a bottleneck for every small bill or nobody really approves anything. Write the rule down in a few lines and share it with the team.

A practical approval rule usually combines three things:

• Who owns the budget. The person responsible for an area (marketing, the shop floor, a client project) approves bills for that area.
• An amount limit. Bills above a level you choose need a second approval, often from the owner or a director.
• Recurring versus new. A regular monthly bill at the usual amount can be pre-approved. A new supplier or a changed amount always needs a fresh look.

Choose your own amount limits based on the size of your business. There is no correct figure; what matters is that everyone knows it and the limit is low enough that unusual spending gets a second pair of eyes.

Separate approving from paying

The strongest single control in AP is splitting duties: the person who approves a bill should not be the only person who can send the payment. In a very small business that is not always possible, so use a lighter version. For example, a bookkeeper prepares payments and the owner releases them in online banking, or the owner pays but a second person reviews the bank statement each month.

Step 4: pay on a schedule, not on demand

Paying bills the moment they arrive feels responsible, but it makes cash harder to plan and creates constant interruptions. Paying them late damages trust and may cost you late fees. The middle path is a fixed payment run.

1. Pick a payment day. Once a week works for most small businesses. Some prefer twice a month. Put it in the calendar as a recurring slot.
2. Pull the due list. Before the run, list every approved bill due before the next payment day.
3. Check your cash. Compare the total with your bank balance and expected income for the week. If cash is tight, decide which bills to pay first and contact any supplier you need to delay.
4. Prepare and release. Set up the payments, then have the approver or a second person release them if your bank allows it.
5. Mark as paid. Update the register or software with the payment date and method straight away.
6. Send remittance details. Let suppliers know what you paid, especially when one payment covers several invoices.

Pay close to the due date rather than early, unless a supplier offers an early payment discount that makes sense for you. Holding cash until bills are due gives you more breathing room, and it costs your suppliers nothing as long as you are on time.

Step 5: record, file and review

A bill is not finished when the money leaves your account. It needs to be recorded in your books and filed so you can find it during a tax review, a loan application or a supplier dispute.

• Record it. Enter the bill with the correct expense category and any sales tax or VAT shown, then match the payment to the bank transaction.
• File it. Save the invoice, approval and payment confirmation together, named consistently, for example "2027-11 SupplierName INV1234."
• Keep it. Record-keeping periods depend on your country and business type, so check the current guidance from your tax authority or ask your accountant how long to keep records.
• Review monthly. Once a month, list unpaid bills by age, check for anything stuck in approval and compare supplier statements to your records.

A simple bills register template

Copy these columns into a spreadsheet and add one row per invoice. The suppliers and amounts below are made up for illustration only.

Add a "Notes" column for disputes, partial payments or early payment discounts, and sort by due date before each payment run.

When to bring in AP software

A spreadsheet works well until volume or complexity outgrows it. Signs you may be ready for dedicated tools include dozens of invoices a month, several approvers, suppliers in different currencies, or hours spent typing invoice details into your accounting software.

Accounts payable automation tools such as BILL, Melio, Tipalti and Ramp can capture invoices, route them for approval and schedule payments, while Dext focuses on pulling data from bills and receipts into your bookkeeping. Each works differently and connects to different accounting systems, so check current features, pricing, supported countries and privacy policies before you choose. Start with the process first; software speeds up a good process but cannot fix a confusing one.

Frequently asked questions

The bottom line

An accounts payable process does not need to be complicated. Give bills one front door, check them against what you ordered and received, approve them by a written rule, pay them on a set day and file the proof together. Those five habits catch most errors and most fraud attempts before they cost you money.

Set aside an afternoon this month to create the bills mailbox, start the register and book your first payment run. When December invoices start arriving, you will already have a calm, repeatable way to handle them.