Invoice automation goes wrong when it starts with the tool instead of the rules. Before anything reads an invoice, the team needs one intake point, agreed coding habits and clear approvers. These four steps set those up first, then let automation draft the entry while a person still approves every invoice before it is posted or paid.

Step 1 — Map the current flow

Goal: See where invoices arrive, wait and get re-keyed.

  1. List every way invoices arrive today: inboxes, uploads, supplier portals and paper.
  2. Follow a few recent invoices from arrival to payment and note each hand-off.
  3. Record who approves which suppliers, cost centres and amounts.
  4. Note where late fees, duplicates or coding corrections have happened.

You finish with: A one-page map of the invoice flow with approvers and problem points.

Step 2 — Set the rules

Goal: Agree the rules automation will follow.

  1. Pick one intake address or folder and ask suppliers to use it.
  2. Write down the usual coding for your most frequent suppliers.
  3. Set approval rules by cost centre and amount, with a backup approver for each.
  4. Decide which cases always go to a person: new suppliers, changed bank details, mismatches and credit notes.

You finish with: Written intake, coding and approval rules with named owners.

Step 3 — Draft entries for review

Goal: Let automation prepare the entry while people decide.

  1. Extract supplier, dates, amounts and line items from each invoice.
  2. Match against the purchase order, receipt and previous coding for that supplier.
  3. Draft the accounting entry with suggested codes and flag any mismatch or possible duplicate.
  4. Route each draft to its approver; nothing is posted or paid without approval.

You finish with: Draft entries with suggested coding, routed to the right approver.

Step 4 — Measure and tighten

Goal: Show the time saved and improve the rules.

  1. Track time from invoice received to approved, against the starting point.
  2. Track how many drafts were approved without edits.
  3. Review corrected codes each month and update the supplier coding notes.
  4. Review exceptions and late payments with the finance owner.

You finish with: A monthly view of cycle time, edits and exceptions, with updated rules.

Common pitfalls

  • Automating before intake, coding and approval rules are agreed.
  • Posting or paying without a person’s approval.
  • Accepting changed supplier bank details without a separate check.
  • Letting coding notes go stale after suppliers or cost centres change.

See it as a workflow

Finance

Supplier invoice coding and approval

Read incoming supplier invoices, match them to purchase orders and past coding, and route each one to the right approver with the draft entry ready.

See the workflow

More guides like this

Related answers

Read as Markdown Automate the repeatable