Most reviews still describe Stampli as accounts payable automation. That undersells what it now sells. Stampli positions itself as a procure-to-pay platform covering the full cycle from purchase request through payment, with an AI layer it markets as an “AI employee” rather than a feature.
The design idea that actually distinguishes it is older and simpler: the invoice itself is the workspace. Every question, approval and document lives on the invoice rather than in email threads beside it. If your AP delays come from chasing approvers for context, that matters more than any feature list.
This review covers what Stampli actually costs and why it will not tell you, the current product line, what its AI does and does not do, and where it fits against Bill, Tipalti and AvidXchange.
What Stampli is
Stampli captures supplier invoices, codes them to your chart of accounts, routes them for approval, matches them against purchase orders, and pays them. Around that core it now sells procurement, payments, corporate cards and vendor management as separate modules.
The differentiator is the communication model. Rather than approvals happening over email with the invoice attached, Stampli puts a discussion thread on the invoice record itself, visible to AP, approvers and, where you allow it, the vendor. Everything said about an invoice stays attached to it, which is what makes the audit trail genuinely useful rather than merely complete.
Stampli pricing in 2026
Stampli publishes no prices. Its pricing page is a feature comparison against unnamed “other providers” with a Request a Quote button and no numbers anywhere. That has not changed in years, and you should plan for a sales conversation rather than a signup page.
Third-party estimates put it roughly in the $250 to $1,500 per month range depending on invoice volume and modules. Treat that as an order of magnitude only. Aggregator figures for this category are notoriously unreliable, and Stampli prices per deployment.
What Stampli does state on the pricing page is more useful than a number, because it tells you what is bundled rather than billed:
| Included in the quote | Detail |
|---|---|
| Users | Unlimited. Approvers do not cost extra, which matters because approver count is where per-seat competitors get expensive. |
| Entities, locations and vendors | Unlimited. |
| Dedicated Customer Success Manager | Included, not an upgrade tier. |
| Support | Included, with a stated response time of under 90 seconds, staffed by AP and ERP specialists. |
| Onboarding and team training | Included. |
| Stampli Card | Free for Stampli customers. |
| Reporting | 12 pre-built reports plus interactive dashboards. |
| PO matching | Semi-automated 2 and 3-way matching included. Full automation via Stampli Cognitive AI is available but quoted separately. |
The cost variables to pin down in the quote are invoice volume, which modules beyond core AP you take, and whether you want full AI automation of matching rather than the semi-automated version. Stampli is explicit that every deployment is centred on the core AP product and other modules are added on top, so ask for the base and each module itemised.
The product line
Five products, modular, with AP as the mandatory core.
| Product | What it does |
|---|---|
| Stampli Accounts Payable | The core. Capture, GL coding, approval routing, PO matching, duplicate and variance flagging, and the invoice-as-workspace discussion thread. Every deployment includes it. |
| Stampli Procurement | Purchase requests and PO creation with budget validation and GL context applied before money is committed. Supports PO, card or service request paths, and can export POs to your ERP. |
| Stampli Direct Pay | Payment execution: domestic check and ACH, global ACH and wire, and virtual cards, with pre-payment ERP checks and one-to-one reconciliation. |
| Stampli Card | Virtual and physical corporate cards with pre-set controls and pre-coded GL logic, expense management and a mobile app. Free to Stampli customers. |
| Advanced Vendor Management | Vendor onboarding through a secure portal, vendor messaging and document compliance, with payment eligibility enforced automatically. |
Note the naming, because it is frequently got wrong: the card product is Stampli Card, not “Simply Card”.
Billy, and what the AI claims actually mean
Stampli’s AI is branded Billy and sold as an “AI employee” for procure-to-pay rather than as a document-reading feature. The underlying engine is marketed as Stampli Cognitive AI.
What it does, concretely: extracts and codes invoices, predicts the right approvers, performs line-level PO matching, flags duplicates and variances, and learns from each correction. In procurement it turns free-text purchase requests into structured financial data and splits multi-item requests into separate PO line items.
Two vendor figures are worth reading carefully rather than dismissing or swallowing:
- “Stampli AI performs on average 87% of finance work across 2,700+ ERP-aligned fields.” This is a vendor metric with no published methodology. “Finance work” is undefined, and field-level automation is not the same as invoices needing no human touch. Ask in the demo what percentage of invoices post with zero human intervention on your data, which is the number that changes headcount.
- A 10-year AI track record. This one is defensible. Stampli has been applying machine learning to coding and approver prediction since well before the current AI wave, which is a genuine difference from competitors who added a model recently. The practical benefit is that accuracy comes from accumulated corrections rather than a general-purpose model guessing at your chart of accounts.
ERP integration
Stampli does not replace your accounting system, it feeds it, and the integration model is the part worth scrutinising. It mirrors your chart of accounts, dimensions, entities and approval hierarchies at field level, validates transactions before posting, and syncs bi-directionally so the ERP stays the source of truth.
Pre-validation is the meaningful detail. A system that posts first and reconciles later generates month-end cleanup; one that rejects a bad coding at entry does not. If you are comparing AP tools, ask each vendor whether validation happens before or after posting.
Where it is strong
- Unlimited users. Approvers, budget holders and reviewers cost nothing extra. Per-seat competitors create a quiet incentive to keep people out of the system, which is precisely the wrong incentive for approval speed.
- Communication attached to the invoice. The single best reason to choose Stampli. Exception handling stops being an email archaeology exercise.
- Audit readiness is structural, not bolted on. Immutable trail, enforced segregation of duties, and the full conversation attached to each transaction.
- Mature AI on the specific task. A decade of coding and approver prediction on AP data, rather than a recently added general model.
- Deployment measured in weeks. Stampli claims a fulfilment-first implementation that deploys in weeks rather than months. Competitors in this bracket routinely run longer.
- Support and a CSM are included, not a premium tier, with a stated sub-90-second response target.
Where it is not
- No published pricing at all. You cannot budget, shortlist or benchmark without a sales call, and there is no self-serve tier. For a finance team evaluating four vendors that is real friction.
- Full match automation is quoted separately. Semi-automated 2 and 3-way matching is included; full automation by Cognitive AI is an add-on. The headline AI story and the included functionality are not the same thing.
- Not aimed at small operations. The unlimited-user, CSM-included, quote-only model is built for organisations with real invoice volume and multiple approvers. A very small business is paying for structure it will not use.
- Reported friction around payment terms and sorting. Users consistently report difficulty sorting and selecting approved invoices by payment terms, and that some workflows require exporting bills before paying them.
- Approvers cannot always fix coding. A recurring complaint is that an approver who spots a wrong expense classification has to send the invoice back to finance rather than correct it, which adds a round trip to the exact exception the product is meant to shorten.
- Import and export is the rough edge. Where users report the most difficulty, and where payment-export error detection is reported as weakest.
- The 87% figure is unaudited. Treat it as marketing until it is reproduced on your own invoices in a pilot.
Alternatives
- BILL, the broadest SMB option, with payments and AR alongside AP.
- Tipalti, stronger on global mass payouts, supplier tax compliance and multi-entity payment operations.
- AvidXchange, deep in mid-market real estate, construction and HOA verticals with a large supplier payment network.
- Lightyear, which also gives unlimited users but prices by document credits, and publishes its prices.
- SAP Concur, stronger on travel and employee expense than supplier invoices.
- Our wider accounts payable automation software comparison covers the rest of the market.
Two names that appear on older Stampli comparison lists have since been acquired, which changes their roadmaps and is worth knowing before you shortlist them. Airbase is now Airbase by Paylocity, acquired on 1 October 2024 and steered toward combined payroll and non-payroll spend. MineralTree was acquired by Global Payments and now sits inside a payments company rather than operating independently.
Other details
| Category | Procure-to-pay, positioned beyond AP automation alone |
| Deployment | Cloud, web-based, with a mobile app for cards and approvals |
| Pricing model | Quote only, modular, core AP required |
| Users | Unlimited on every deployment |
| Best fit | Mid-market and enterprise finance teams with many approvers and real invoice volume |
| Support | Email, phone, chat, knowledge base, dedicated CSM, sub-90-second stated response |
| Implementation | Vendor states weeks, not months |
FAQs
How much does Stampli cost?
Stampli publishes no prices. Its pricing page is a feature comparison with a Request a Quote button and no figures, so budgeting requires a sales conversation. Third-party estimates put it roughly between $250 and $1,500 per month depending on invoice volume and modules, but treat that as an order of magnitude only. Cost is driven by invoice volume, which modules you add beyond the required core AP product, and whether you take full AI match automation, which is quoted separately from the included semi-automated matching.
Does Stampli charge per user?
No. Every Stampli deployment includes unlimited users, along with unlimited entities, locations and vendors. This is a meaningful difference from per-seat competitors, because it means adding approvers and budget holders costs nothing and you are not incentivised to keep people out of the approval workflow.
What is Billy in Stampli?
Billy is Stampli’s AI, marketed as an AI employee for the whole procure-to-pay cycle rather than as a single feature, running on what Stampli calls Cognitive AI. It extracts and codes invoices, predicts approvers, performs line-level purchase order matching, flags duplicates and variances, and learns from corrections. In procurement it converts free-text purchase requests into structured data and splits multi-item requests into separate line items.
What products does Stampli sell?
Five, and they are modular with Accounts Payable as the mandatory core: Stampli Accounts Payable, Stampli Procurement, Stampli Direct Pay for ACH, cheque, wire and virtual card payments, Stampli Card for virtual and physical corporate cards, and Advanced Vendor Management for vendor onboarding and compliance. Note the card product is called Stampli Card, not Simply Card, a name several review sites get wrong.
Is Stampli suitable for small businesses?
Generally no. The quote-only pricing, unlimited-user model, included customer success manager and procure-to-pay scope are built for organisations with substantial invoice volume and multiple approvers. Very small operations end up paying for structure they will not use, and would be better served by a vendor with published pricing and a self-serve tier.
Does Stampli replace my accounting system?
No. Stampli feeds your ERP rather than replacing it. It mirrors your chart of accounts, dimensions, entities and approval hierarchies at field level, syncs bi-directionally, and validates transactions before posting rather than after, so the ERP remains the single source of truth and you avoid month-end reconciliation cleanup.
The short version
Stampli is a strong choice if your AP bottleneck is approval and exception handling rather than payment execution, and if you have enough approvers that per-seat pricing hurts. The invoice-as-workspace model and unlimited users are a genuinely good pairing, and the AI has a longer track record on this specific task than most rivals can claim.
Go in knowing two things. You will not get a price without a sales call, so line up comparable quotes before you start. And separate the included semi-automated matching from the full AI automation that is quoted on top, because the marketing does not, and that is where a reasonable-looking base quote grows.