Accounts payable: handling supplier invoices

At most small clients, accounts payable is not a department. It is a drawer. Supplier invoices arrive by post, by email, folded inside the delivery box, or as a photo forwarded by the boss three weeks later. Some get paid before anyone records them. Some get recorded twice. Some never reach the firm at all.

Then at month-end or year-end, the firm’s staff sit down with the pile: sort it by supplier, key every invoice line by line, and try to make the creditor balances agree with what the suppliers say is owed. When they don’t agree, the chasing starts.

What accounts payable means

Accounts payable (trade creditors, or simply “creditors”) is the money a business owes its suppliers for goods and services already received but not yet paid for. It sits under current liabilities on the balance sheet.

You will hear two names for the same document:

• Supplier invoice is what the supplier issues: their bill to your client.
• Purchase invoice is the same document seen from your client’s side: it records a purchase.

Each one is posted to the purchases (or expense) account and to that supplier’s account in the creditors ledger, then cleared when the payment goes out.

LHDN expects this to be kept properly. Public Ruling 4/2000 for companies lists a purchases ledger among the books a company should keep, says entries should be made as soon as possible and in any case not later than 60 days after the transaction, and names invoices among the supporting documents to retain. Under section 82 of the Income Tax Act 1967, those records are kept for 7 years. More in how long to keep receipts in Malaysia.

The documents in the payables flow

Not every client uses all of these, but it helps to know which piece proves what:

Document	Who issues it	What it proves
Purchase order (PO)	Your client	What was ordered, at what price
Delivery order (DO)	Supplier	What was actually delivered
Supplier invoice	Supplier	What is owed, and when it is due
Credit note	Supplier	A reduction: returns, overcharges, discounts
Debit note	Supplier	An additional charge on an earlier invoice
Statement of account	Supplier	Everything the supplier thinks is still unpaid
Payment voucher and bank record	Your client and the bank	That the invoice was paid

Larger clients match the PO, DO and invoice before paying (the “three-way match”). Most small clients only have the invoice and the bank transfer, which is fine if the invoice itself is checked.

What to check on every supplier invoice

Before an invoice is keyed or approved, someone should look at:

1. Supplier name and registration number. Is it the supplier you think it is, and is it billed to your client’s company, not the director personally?
2. Invoice number and date. The date decides which month it belongs to. The number is how you spot duplicates.
3. Description, quantity and unit price. Does it match what was ordered or delivered?
4. Tax. If the supplier charges SST, is their SST registration number shown and is the tax worked out correctly? See SST record keeping.
5. Totals. Do the lines add up to the subtotal, and subtotal plus tax to the total?
6. Payment terms and due date. Cash, 30 days, 60 days. This drives the ageing.
7. Has it been recorded already? The same invoice often arrives twice: once by email, once on paper with the goods.

Some of your clients’ larger suppliers now issue e-invoices, which arrive as PDFs with a validation QR code. They still need the same checks and the same posting. Which clients have to issue them is covered in e-invoice thresholds.

Reconciling a supplier statement: a worked example

Most suppliers send a monthly statement of account. Comparing it with the client’s creditor ledger is the quickest way to catch missing invoices, unrecorded credit notes and payments in transit.

A made-up client, Bengkel Maju Sdn Bhd, at 30 April 2026:

• The supplier’s statement shows RM12,640.00 owing.
• The client’s ledger for that supplier shows RM9,880.00.

Going through both line by line, three differences turn up:

• Invoice INV-2291 dated 28 April for RM2,160.00 is on the supplier’s statement but not in the ledger. The client has it in a drawer.
• Credit note CN-118 for RM900.00, for returned parts, is on the statement but was never recorded by the client.
• A payment of RM1,500.00 made by the client on 30 April is in the ledger but not yet on the supplier’s statement.

Creditor ledger	RM
Balance per ledger, 30 April	9,880.00
Add: invoice INV-2291 not recorded	2,160.00
Less: credit note CN-118 not recorded	(900.00)
Corrected ledger balance	11,140.00

Supplier statement	RM
Balance per supplier statement, 30 April	12,640.00
Less: payment made 30 April, not yet on statement	(1,500.00)
Adjusted statement balance	11,140.00

Both sides agree at RM11,140.00. The invoice and the credit note get posted. The payment should appear on May’s statement; if it doesn’t, ask the supplier.

The same logic works from the other direction. A payment on the bank statement with no supplier invoice behind it is a missing document. That is the chase list in a bank reconciliation.

Common problems at small clients

• Wrong period. An invoice dated 29 March, received in April, belongs in March. This matters most at year-end.
• Credit notes forgotten. Suppliers issue them, clients file them with the goods, nobody tells the bookkeeper.
• Paid but never invoiced. The bank shows a transfer to a supplier, but there is no invoice on file.
• Invoices arrive in one lump. Twelve months of invoices handed over in March is the main reason for the year-end rush.

A month-end payables checklist

1. All supplier invoices for the month collected, from email, post and the client’s phone.
2. Each invoice checked against the list above, and duplicates removed.
3. Invoices posted to the right month, the right expense account and the right supplier.
4. Credit notes and debit notes posted.
5. Payments matched to the invoices they settle.
6. Statements from the main suppliers reconciled to the ledger.
7. Bank payments with no invoice listed and sent to the client.
8. Every invoice stored where it can be found again by supplier, date and amount, for 7 years.

Where AccPilot fits

The slow part of payables is the sorting and keying, not the judgement. In AccPilot, supplier invoices come in by web upload, phone snap, email, or the upload link you send the client. AccPilot reads the supplier, date, amounts, tax and line items, and marks each invoice Ready or Check with the reason. It remembers how each supplier was posted last time, matches the client’s bank statement lines to the invoices, and turns the lines with no document into a chase list. Your staff review, then export one clean Excel that imports into your accounting software; see what the Excel export contains. Every invoice stays searchable by supplier, date and amount for 7 years.

What stays with your firm: whether an invoice is genuine business spending, which account it goes to, which period it belongs in, and what to do about a supplier balance that doesn’t agree. Plans are billed monthly or yearly, with credits pooled across the firm and no per-client fee; see pricing.

To see it on a real stack of your clients’ supplier invoices, book a free demo.