At a glance: Accounts payable can be digitalised in four clearly separated phases: as-is assessment, pilot operation with cooperative suppliers, roll-out, stabilisation. The early payment discount deadline is the lever where the change becomes visible.

In many finance departments at mid-sized companies, accounts payable is the biggest time sink. The good news: doing it properly is not a year-long project, it is a clearly structured roadmap.

What keeps the roadmap lean

The roadmap stays lean when three prerequisites are in place:

  • A solution has already been chosen or is already being implemented
  • Internal ownership is clearly assigned, with a realistic amount of time set aside
  • At least two cooperative suppliers are willing to take part in the pilot operation

Phase 1: as-is assessment

The first phase is diagnosis. Interview everyone who touches invoices today. Count invoices per month and per intake channel. Mark your top 10 suppliers as pilot candidates. Result: an as-is assessment file with a workflow diagram and a volume overview.

Phase 2: pilot operation

Start with two or three suppliers. Set up one intake channel, build the workflow in the DMS, train the finance team. Result: pilot operation running with three suppliers, 50 to 100 invoices processed, workflow stable.

Phase 3: Roll-out

Write to your top 50 suppliers with the receiving address for e-invoices and your preferred format. Set up mailbox routing, make sure the handover to the ERP works. Result: the majority of supplier invoices arrive automatically.

Phase 4: stabilisation

Settle disputed invoices, adjust tolerance corridors, set up the KPI dashboard. Result: stable live operation. The first early payment discount gains become measurable.

The early payment discount deadline as a lever

How big that lever is depends on four figures. Work through them with your own numbers:

invoices × amount × discount rate × share of missed deadlines = forgone early payment discount

With a digitalised workflow, fewer early payment discount deadlines are missed. How strongly the lever works for you depends on volume, payment terms and your approval process.

Typical pitfalls

Pitfall 1: underestimating supplier discipline. Without clear instructions, paper keeps arriving.

Pitfall 2: master data quality. Incorrect supplier and item master data break automatic classification.

Pitfall 3: approval bottlenecks. When approvers are on holiday and no deputy is defined, invoices pile up.

Pitfall 4: underestimating ERP integration. The DMS rarely talks to the ERP directly. Clarify the interface effort up front.

FAQ

What if our ERP has no modern API? Older ERP systems can be connected too, often via CSV or XML exports. The implementation effort rises accordingly.

What happens to paper invoices? They are scanned, structured by OCR and fed into the same workflow. Recognition quality depends on the quality of the document; anything not recognised reliably goes to the team for manual follow-up.

How quickly does the change pay for itself? Early payment discount gains take effect once live operation is stable. How quickly the rollout pays off overall depends on invoice volume and the share of invoices with a discount.

Conclusion

The four-phase roadmap carries a mid-sized company through the digitalisation of accounts payable, provided the prerequisites are clear. The early payment discount lever brings noticeable relief, clean master data upkeep makes the effect last. As at September 2026

This article provides general information on legal requirements and is no substitute for legal or tax advice in an individual case.

Further reading

Accounts payable with OXS.eco

From intake and checks to approval by your team: this is how accounts payable works in OXS.eco.

View accounts payableBook a demo