Can AI check supplier bills before I pay them? AI accounts payable explained

What accounts payable involves

Accounts payable is everything between a supplier’s bill arriving and it being paid: checking the bill is right, coding it to the right account, knowing when it falls due, and paying at a time that suits your cash. Mistakes here are quiet. A bill paid twice, coded to the wrong account or claimed in a tax period already filed often goes unnoticed until year end.

What Nella’s Payables role shows

Ask “what do we owe?” and the Payables role answers from your purchase ledger:

• The total owed and how much is already overdue, with the as-at date.
• Timing: what falls due in the next 7 and 30 days, with the largest bills named.
• Pressure on cash: what those payments do to your cash position, worked out with the Treasury role.
• Supplier concentration: where one supplier makes up most of what you owe (on Xero and QuickBooks).
• Exceptions: bills with no due date, which are neither overdue nor current, and bills with no document attached.

It ranks bills by size, due date and the pressure they put on cash. Which to pay first is your choice.

Checking bills before you approve them

Each night Nella checks the bills your accounting software brought in: draft bills waiting for approval in Xero (for example from Hubdoc or Xero’s own capture), and bills and expenses entered in QuickBooks and FreeAgent over the last 35 days. Each is compared with that supplier’s last 12 months in your books. It flags:

• a possible duplicate of a bill already in your books
• coding that does not fit the attached document
• a new account for that supplier
• an amount above the supplier’s usual range
• a VAT or GST period already filed
• a missing due date or document
• coding that does not follow the supplier’s rule

The bills that need a look appear as one item on your team board. Nella changes nothing by itself: a bill changes only when you approve the change on Nella’s card. A monthly bill that carries the same number each month, from a supplier who bills that way, is not flagged as a duplicate. Sage is not yet included.

Supplier rules, statements and receipts

What it does not do

Nella pays nothing and moves no money. It does not decide which bills can wait. It does not decide whether VAT or GST on a bill can be claimed, or whether a cost is allowable for tax; those are questions for your accountant. Every change to your books goes through an entry you approve on Nella’s card, which shows the entry before it posts.

Example · illustrative figures

On Tuesday morning the Payables item lists two bills from the overnight check. A £1,240 bill from a hire company matches one entered three weeks earlier: same supplier, amount and invoice number. A £3,600 bill from a regular supplier is about three times its usual range. The owner deletes the duplicate in Xero, confirms the larger bill with the supplier, and approves the rest. Ask “what do we owe?” and Nella shows £18,400 owed, £2,100 of it overdue, with £7,900 falling due in the next 7 days.

Feature pages by market

• UK: Bill checks · Supplier rules · Supplier statements · Receipts
• US: Supplier rules · Supplier statements · Receipts
• Australia: Bill checks · Supplier rules · Supplier statements · Receipts · Supplier ABN and GST check

Related: What is an AI finance team? and Can AI chase unpaid invoices for me?

Sources

• GOV.UK: Running a limited company: company and accounting records
• Australian Business Register: ABN Lookup

Nella provides financial information and education, not accounting or tax advice. Nella shows you the numbers. When a question needs professional judgement, such as a filing or a tax decision, Nella says so and points you to a qualified accountant.