10 questions every controller should ask when evaluating AP automation software
- Introduction
- How do you handle non-PO invoices?
- What is your straight-through processing rate for invoices like ours?
- How do you detect duplicate invoices and potential fraud?
- How does your system enforce our internal approval policies?
- How does three-way matching work in practice?
- What visibility will we have into AP liabilities and invoice status?
- How does your platform integrate with our ERP?
- How do suppliers interact with the system?
- How quickly can we retrieve a full audit trail for any invoice?
- What does implementation and support look like after go-live?
- Final takeaway
Before you choose an AP automation platform, you should pressure-test how it handles accuracy, controls, and reporting in real-world scenarios, not just in a demo. The right questions help you see beyond product features and understand whether the system will reduce manual work and risk – or quietly introduce new ones.
Use the questions below to evaluate how well an AP automation platform meets the practical demands of a controller’s role. If you want the full evaluation framework behind these questions, start with the AP automation software guide for controllers.
How do you handle non-PO invoices?
Non‑PO invoices are where most manual work and control risk sits, so this is usually where systems start to show their limits. A strong system turns what is typically a manual task into a structured, rule-driven, and automated process.
A strong answer explains how non‑PO invoices are automatically captured, coded, routed, and approved with minimal manual input.
A red flag is any reliance on email flows or manual coding outside the system, which quickly creates inconsistencies.
What is your straight-through processing rate for invoices like ours?
Straight-through processing is one of the clearest indicators of whether the system will actually reduce manual effort and improve data quality. The higher the percentage, the fewer invoices your team needs to touch.
A strong answer references similar customers and invoice types, and explains how automation improves over time as the system learns.
A red flag is a generic percentage that doesn’t take your mix of suppliers, formats, or processes into account.
How do you detect duplicate invoices and potential fraud?
Errors and fraud don’t usually happen in obvious ways, so controls need to run continuously and quietly in the background. This is where you start to see the difference between basic checks and more robust detection.
A strong answer outlines automated detection for duplicates, vendor changes, and unusual activity patterns.
A red flag is reliance on manual review or controls that only trigger at limited points in the process.
How does your system enforce our internal approval policies?
Consistent policy enforcement is what keeps AP efficient without losing control. A well-configured system allows invoices to move quickly while still adhering to your rules.
A strong answer shows how thresholds, delegation, and escalation paths are configured and enforced.
A red flag is limited flexibility or workflows that don’t clearly support how approvals work in your organization.
How does three-way matching work in practice?
Three-way matching is where you see whether the system can actually handle volume without constant oversight. When it works as intended, invoices are matched to POs and receipts automatically, with only a small number of exceptions.
A strong answer explains how matching is automated, how tolerances are set, and how exceptions are handled efficiently.
A red flag is frequent manual intervention or unclear logic when mismatches occur.
What visibility will we have into AP liabilities and invoice status?
As a controller, you need to understand where things stand without waiting for reports or building your own trackers. This becomes especially important during month-end, when timing and accuracy matter most.
A strong answer live access to invoice status, accruals, and aging without needing to export or reconcile data.
A red flag is reliance on delayed reporting or exporting data into spreadsheets to get a clear picture.
As a controller, you need real-time access to invoice status, accruals and aging without needing to export or reconcile data in spreadsheets.
How does your platform integrate with our ERP?
A clean integration ensures that data moves into your financial system consistently and without additional work. When this is done well, it reduces reconciliation effort and avoids delays during close.
A strong answer explains how data is synced, how errors are handled, and whether the integration is standardized rather than custom-built.
A red flag is manual uploads, delayed syncing, or unclear ownership of integration issues.
How do suppliers interact with the system?
Giving suppliers the ability to submit invoices and check status directly reduces inbound queries and improves data accuracy from the start. That frees up your team to focus on managing the process rather than answering questions.
A strong answer includes a supplier portal for invoice submission, status tracking, and payment updates.
A red flag is heavy reliance on email and manual follow-ups, which tends to increase workload over time.
How quickly can we retrieve a full audit trail for any invoice?
Strong audit traceability makes it easier to explain decisions, resolve issues, and respond to auditors without extra work. When everything is recorded in one place, you avoid scrambling for documentation later.
A strong answer shows how every step in the invoice lifecycle is logged and easily retrievable.
A red flag is fragmented records or processes that require manual reconstruction.
What does implementation and support look like after go-live?
A smooth implementation helps you realize value faster, but ongoing support is what keeps the system working as expected over time. This is often where the real differences between vendors show up.
A strong answer clearly outlines time to go-live, required internal effort, and how support works once the system is live.
A red flag is vague timelines, unclear responsibilities, or support that depends heavily on internal IT resources.
Final takeaway
These questions help you move past feature lists and understand how an AP automation software performs under real conditions. The answers you get will show whether the platform reduces workload and risk – or creates new dependencies and workarounds.
For a structured way to evaluate AP software vendors across accuracy, controls, reporting, and audit readiness, use the AP automation software guide for controllers.
