See your saving in about thirty seconds.
Adjust your invoice volume, processing method, and how many of your suppliers are already on the Peppol network. The calculator returns an annual saving figure, a cost-per-invoice comparison, and a payback period against your platform subscription and implementation cost.
Your AP automation saving.
Manual processing cost: Paper = $30/invoice (ATO benchmark). PDF = $27/invoice (ATO benchmark). Mixed = weighted average. All figures AUD.
Automated processing cost (PDF): ~$10/invoice, a conservative mid-point from the Billentis cost breakdown, consistent with Ardent Partners research ($2 to $5 at the low end; $10 used as conservative ANZ mid-market estimate).
eInvoicing uplift: For Peppol-registered suppliers, per-invoice cost reduces to ~$3 to $5 as the capture step is eliminated. Access point fees (~$0.05/transaction) are included in the automated cost. This calculator uses $4 as the blended eInvoice cost.
What the $27 benchmark includes: The ATO benchmark is the fully-loaded cost of all AP steps: data entry, GL coding, approval routing, PO matching, exception resolution, and archiving. It is approximately 94% workflow cost and 6% capture cost (Billentis, 2017).
Payback period: Implementation cost divided by monthly net saving (processing saving minus platform subscription). Excludes error/fraud/audit savings which would shorten the payback further.
Disclaimer: This calculator provides directional estimates only. Actual costs and savings vary by business complexity, platform, invoice mix, and supplier Peppol readiness. Request a tailored assessment from Acume for a precise figure.
Four independent sources. One consistent finding.
The benchmarks behind this calculator come from four separate research bases that arrived at corroborating conclusions about the cost of manual invoice processing in Australia and New Zealand. They measure the same thing – the fully-loaded cost of moving an invoice through every AP step – from different methodologies and geographies.
Australian Taxation Office
Approximately $30 per paper invoice, $27 per PDF invoice processed manually, and under $10 per structured Peppol eInvoice. The ATO's benchmark is the anchor for Australian and New Zealand mid-market businesses.
NZ Ministry of Business, Innovation and Employment
NZD $28 to $30 for a manually processed PDF invoice. NZD $7 to $9 for a structured Peppol eInvoice. Independently confirms the ATO figures in the New Zealand market.
Business Case E-Invoicing / E-Billing (2017)
Commissioned by the ATO in 2015 and updated through 2019. Provides the detailed cost breakdown showing that approximately 94% of manual processing cost is workflow (coding, approval, matching, archiving) and only 6% is capture.
Ardent Partners State of ePayables
Annual benchmarking across hundreds of organisations globally. Finds $15 to $40 per invoice manual cost and $2 to $5 automated – corroborating the ATO and Billentis ranges from a separate research base.
Three more savings this calculator deliberately leaves out.
The figure above is a conservative estimate of the processing-cost saving alone. It is the most quantifiable layer and the right place to start a business case. Three more layers materially strengthen it – but they are harder to model in a calculator, so they sit outside the figure.
Errors and duplicate payments
The Billentis research finds that 20 to 30 percent of manually processed invoices require exception handling. Each exception is additional cost on top of the base benchmark. Automated AP environments materially reduce this exception rate.
Fraud exposure
The ACCC consistently identifies Business Email Compromise as one of the most financially damaging scam types targeting Australian businesses. A single mid-market BEC incident typically exceeds the annual cost of the AP platform that would have prevented it.
Compliance and mandate readiness
Australia's Peppol eInvoicing mandate is expanding through 2026. Building eInvoicing capability now, as part of a planned AP project, is materially cheaper than retrofitting it under deadline pressure later.
For the full ROI framework including all five layers, see How to Build a Business Case for AP Automation.
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A real conversation about your AP. We'll run the model on your specific invoice volumes, supplier Peppol coverage, and approval logic, and walk you through what changes.