Corpay vs. Stampli: Accounts Payable Automation Compared (2026)

Corpay and Stampli both automate accounts payable, but they start from different scopes. Stampli built a genuinely well-regarded, NetSuite-native AP platform. Finance teams on Reddit specifically credit it with handling growing invoice volume that outpaced other tools. Corpay's AP automation is one part of a broader payments platform that also runs commercial cards and cross-border FX across all four mid-market ERPs, not NetSuite alone. If you're a controller or AP manager comparing the two, the honest question is whether your finance stack needs AP automation alone or AP paired with cards and cross-border payments on the same platform, not which vendor is better at AP in isolation.

Key Takeaways

• Stampli is a NetSuite-native AP automation platform with a strong reputation for handling growing invoice volume; Corpay pairs AP automation with commercial cards and cross-border FX.

• Stampli serves 1,800-plus customers across 2,800-plus entities and has raised $148 million, including a $61 million Series D led by Blackstone; Corpay serves 800,000-plus businesses.

• Stampli maintains pre-built integrations with 70-plus ERPs and holds Certified NetSuite Partner status; Corpay maintains native integrations with all four mid-market ERP leaders plus cards and cross-border rails.

• Stampli doesn't sell commercial cards or a cross-border FX product; Corpay runs both as core business lines alongside its AP automation.

• Automated invoice processing costs a fraction of manual processing on either platform, though the exact savings depend on your current baseline and how much of the workflow you automate.

What's the core difference between Corpay and Stampli?

Stampli leads with deep NetSuite integration and an AP-first product built to scale with invoice volume. Corpay leads with platform breadth, bundling AP automation with commercial cards, cash rebates, and cross-border FX. Neither claim is a knock on the other. Stampli's NetSuite depth is real and so is Corpay's breadth, and they're solving different-shaped problems for the finance team evaluating them.

Who is Corpay built for, and who is Stampli built for?

Stampli's core buyer is a controller or AP manager running NetSuite who wants an AP tool that plugs into it natively and scales cleanly as invoice volume grows. Corpay's core buyer is a finance leader who needs AP automation alongside commercial cards, cash rebates, and cross-border payments on one platform, particularly when the business runs more than one ERP.

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When does Stampli make more sense for your business?

Stampli is the stronger fit when your AP problem centers on NetSuite specifically and invoice volume is growing past what a lighter tool can handle. That strength shows up directly in user feedback. One finance team switched to Stampli after finding a lighter competitor "really couldn't handle that volume well" past roughly 250 invoices a month, and reported the switch made their job noticeably easier once volume grew past 100 invoices. Another reviewer called out the implementation team as "top notch" and confirmed the platform "works very well" with their NetSuite setup.

The company reporting backs that up:

• 1,800-plus customers processing 400,000-plus invoices per week.

• $390 billion-plus in cumulative spend across the platform.

• Certified NetSuite Partner status, plus a place on G2's 2026 Best Software Awards.

Take the awards for what they are. Certified Partner status is the line that carries weight in a NetSuite shop, because it means the connector is maintained against NetSuite's release cycle rather than reverse-engineered.

When does Corpay make more sense for your business?

Corpay tends to win when the buyer needs more than a NetSuite-native AP tool. That's usually true when:

• The business runs a second ERP alongside or instead of NetSuite, particularly Sage Intacct, Microsoft Dynamics 365, or Acumatica.

• Card spend and vendor-payment volume both run through the same finance team, and one rebate structure across both matters.

• Vendors include international suppliers that need active cross-border FX management, not just domestic invoice processing.

• AP staff need a managed vendor-enrollment service on top of the automation software itself.

A finance team that's happy with Stampli's NetSuite depth but is separately shopping for a commercial card program has the clearest reason to price Corpay's combined platform before adding a fourth vendor relationship.

How do Corpay and Stampli compare on ERP integrations?

The scope difference is sharpest here. Stampli maintains pre-built, native integrations with 70-plus ERPs and holds Certified NetSuite Partner status specifically. Corpay maintains native integrations with all four mid-market ERP leaders, and QuickBooks, Xero, SAP, and Oracle are covered as well. Both platforms cover a broad ERP set on paper, but the practical difference is depth versus breadth of use case. Stampli's invoice automation workflow is purpose-built around NetSuite's data model specifically. Corpay's AP automation workflow runs the same logic across whichever ERP a multi-entity company happens to be running in each division.

For a company running NetSuite AP automation as its single system of record, Stampli's NetSuite specialization is a real advantage worth weighing directly against Corpay's broader coverage.

How do Corpay and Stampli compare on AP automation and invoice processing?

Both platforms cover the same four steps of the invoice workflow, and both measurably outperform manual processing:

1. Invoice capture from email, PDF, or supplier portal.

2. GL coding, AI-assisted on both platforms.

3. PO matching against receipts and purchase orders.

4. Approval routing to the right owner, with reminders.

The fully loaded cost of processing an invoice manually runs several times what a strong automated flow spends on the same invoice, once keying, matching, and approval-chasing labor is counted. Automated teams also close invoices in a fraction of the time a manual queue takes. Stampli's specific strength, backed by its own volume figures and the user feedback above, is handling growth in invoice count without the automation breaking down. Corpay's invoice approval workflow automation runs comparable matching and routing logic. The difference shows up in what sits alongside it on the same platform, namely commercial cards, cash rebates, and payment execution across every rail a vendor is willing to accept.

How do Corpay and Stampli compare on cards and payment rails?

Stampli is an AP automation platform; commercial cards aren't part of its product line. Corpay runs a full commercial card program alongside its AP automation, with cash rebates paid monthly and a dedicated vendor management function that pairs vendor enrollment with payment execution. For a finance team that's already running a separate card program, consolidating AP, T&E, and card spend under one platform removes a vendor relationship rather than adding one. Cross-border is the other clean differentiator. Stampli doesn't offer a dedicated FX or cross-border payments product, while Corpay runs one as a core business line for companies paying international vendors.

Corpay AP automation: More than AP for growing finance teams

If Stampli's NetSuite depth is the reason it's on your shortlist, that's a legitimate, well-supported reason to choose it. The user feedback on volume scaling and implementation quality is real. But if your evaluation also touches commercial cards, a second ERP outside NetSuite, or vendor payments that cross borders, Corpay AP automation is built to cover all three on one platform. It runs alongside Corpay's commercial card program, so cash rebates, vendor enrollment, and AP automation live under a single relationship instead of stacking a card vendor on top of an AP vendor.

Frequently Asked Questions

What's the difference between Corpay and Stampli?

Stampli is a NetSuite-native AP automation platform known for handling growing invoice volume cleanly. Corpay bundles AP automation with commercial cards and cross-border FX across all four mid-market ERPs. The core distinction is scope: AP alone versus AP paired with cards and cross-border payments.

Does Stampli work with ERPs other than NetSuite?

Yes. Stampli maintains pre-built integrations with 70-plus ERPs, including Sage Intacct, Microsoft Dynamics, SAP, QuickBooks, and Acumatica, though its strongest reputation and Certified Partner status is specifically with NetSuite.

Is Stampli only for accounts payable, or does it include cards?

Stampli's core product is AP automation; commercial cards aren't part of its product line. Corpay runs a full commercial card program alongside its AP automation, which is the main structural difference for a buyer evaluating both categories together.

How does Corpay compare to Stampli for a NetSuite-based finance team?

Both connect natively to NetSuite. Stampli's integration is deeper and more specialized for NetSuite specifically, with Certified Partner status; Corpay's NetSuite integration is one of four equally native mid-market ERP connections, which matters more if you run a second ERP alongside NetSuite.

Can Stampli handle high invoice volume?

Real user feedback says yes. One finance team switched to Stampli specifically because a lighter competitor couldn't handle their invoice volume, and reported the change made their AP workload noticeably easier. Stampli's own reporting backs this with 400,000-plus invoices processed weekly across its customer base.

David Luther

Product Marketing Program Manager

David Luther, MBA is a product marketing program manager with years of experience in commercial banking, finance, and technology sectors, with research and writing appearing in financial publications.

AP Automation