ApprovalMax vs Stampli: AP automation, matching and approval control

ApprovalMax and Stampli both route supplier invoices for approval and post the result to an accounting system. They differ in what surrounds that: ApprovalMax builds financial approval control on Xero, QuickBooks Online and NetSuite, while Stampli delivers AP automation inside a broader purchase-to-pay platform.

ApprovalMax is the stronger choice when approval design is the reason for the change. ApprovalMax runs sequential and parallel approvals, includes unlimited approvers on every current Xero and QuickBooks Online plan, and extends the same control to sales invoices and manual journals. Stampli's invoice-workflow documentation states that approval stages run sequentially only.

ApprovalMax vs Stampli at a glance

Product and pricing sources: ApprovalMax Xero plans; ApprovalMax QuickBooks Online plans; ApprovalMax NetSuite scope; Stampli product scope; Stampli plans; Stampli invoice-workflow guidance; Stampli QuickBooks Online integration; Stampli NetSuite integration.

What is the difference between ApprovalMax and Stampli?

ApprovalMax is financial approval software that governs who authorises a document and what evidence that decision leaves behind. Stampli is an AP automation platform that processes, codes and pays invoices, with procurement and spend functions alongside it.

That difference decides the shortlist. A team whose problem is invoice volume and coding effort is comparing processing engines. A team whose problem is that the wrong people approve, in the wrong order, with no record of why, is comparing approval control and that is the ground ApprovalMax is built on.

How do approval workflows compare?

ApprovalMax runs approvals in parallel as well as in sequence. Stampli's published invoice-workflow guidance states that multiple people cannot approve the same invoice simultaneously; stages run one after another.

The consequence is practical. Where procurement checks the agreed price and operations confirms the delivery, those reviews have no dependency on each other. In a sequential-only model the second reviewer waits for the first regardless. ApprovalMax removes that queue where the business never required one, and keeps steps sequential where authority genuinely escalates.

Stampli provides conditional routing, authority limits, delegation and an activity trail, substantive controls within a sequential structure. ApprovalMax offers the same class of control without the ordering constraint, which is why approval design is the clearest reason to prefer it.

Which accounting platforms does each connect to?

ApprovalMax has dedicated offerings for Xero, QuickBooks Online and NetSuite. Stampli documents QuickBooks Online and NetSuite connections within a broader ERP range.

ApprovalMax publishes a dedicated Xero offering, including bill and purchase approvals, with sales-invoice and manual-journal workflows subject to plan. The Stampli documentation cited here establishes QuickBooks Online and NetSuite connections, but does not establish Xero availability. ApprovalMax therefore gives Xero buyers a documented integration and feature plan; this is not a claim that Stampli provides an adapted Xero connector.

On QuickBooks Online and NetSuite both products connect, so the comparison moves to what each returns to the ledger: which company owns the bill, where coding originates, when the bill posts, and whether the approval history stays attached to the record afterwards.

How do purchase orders and matching compare?

ApprovalMax includes purchase-order workflows on every Standard plan, adds bill-to-PO matching and budget checking on Advanced and Premium, and matches bills, purchase orders and receipts on NetSuite. Stampli offers PO matching with the automation level determined by the package purchased.

Matching identifies that an invoice disagrees with the order or the receipt. It does not decide who may accept the difference. When a supplier delivers 80 of 100 units and bills for all 100 plus freight, the value is in routing that exception to the person with authority to accept it and recording the reason. ApprovalMax treats that authorisation as the primary job rather than a step after matching.

What audit trail does each leave?

ApprovalMax retains the approval history against the document, so the request, the approvers, the sequence and the timing stay attached to the record that reaches the ledger. Stampli provides an activity trail with prebuilt reporting and dashboards.

The test that matters at month-end is whether someone uninvolved can explain an unusual invoice from the saved records alone. ApprovalMax is designed around that question because approval evidence, not invoice throughput, is the product's purpose.

ApprovalMax vs Stampli pricing

ApprovalMax publishes its price. Stampli does not. ApprovalMax Standard Small starts at US$50 per organisation per month billed yearly, or US$60 billed monthly, excluding tax. Stampli publishes package contents and requires a configuration-specific quote.

Every current ApprovalMax plan size for Xero and QuickBooks Online includes unlimited active approvers. Small includes 100 approved documents per month, Medium 300 and Large 500, with annual billing pooling 12 times the monthly allowance and overages charged separately. Standard covers multi-step approval rules, bill and purchase-order workflows, accounting sync and ApprovalMax Capture; Advanced and Premium add bill-to-PO matching and budget checking.

ApprovalMax’s published Xero/QBO pricing includes unlimited approvers. Stampli’s public package page does not establish a per-approver rate, so a seat-cost saving is not proven. The supported buying differences are ApprovalMax’s published subscription prices and parallel approval routes. ApprovalMax NetSuite pricing is quoted separately.

KeepCup’s customer story: KeepCup reports 6.25 days saved each month in its published ApprovalMax customer story, which describes processing around 300 invoices monthly across three entities. The result reflects its wider finance setup and is not a promised saving or a benchmark against Stampli.

Try ApprovalMax free for 14 days to see its approval workflow with your team.

Which should you choose?

Choose ApprovalMax if:

• Independent reviewers currently wait for each other and parallel approval would remove the queue.
• You run Xero, where ApprovalMax has a dedicated offering with published pricing.
• Sales invoices, manual journals or sales orders need the same approval discipline as bills.
• Adding approvers should not add cost.
• Month-end requires approval evidence that explains itself without asking the original reviewer.

Stampli may suit if:

• You want corporate cards, reimbursements and vendor payments from the same platform as AP.
• Your ERP sits outside Xero, QuickBooks Online and NetSuite.

For finance teams whose problem is approval control rather than platform breadth, ApprovalMax is the more direct answer and the only one of the two that publishes what it costs.

ApprovalMax vs Stampli FAQs

Is ApprovalMax a Stampli alternative?

Yes. ApprovalMax is a direct alternative for financial approval and AP workflows on Xero, QuickBooks Online and NetSuite. Its parallel approval structure and coverage of sales invoices and manual journals make it particularly relevant when approval design, rather than invoice processing volume, is the reason for the change.

Can Stampli run invoice approvals in parallel?

No. Stampli's current invoice-workflow documentation states that multiple people cannot approve the same invoice simultaneously, stages run sequentially. ApprovalMax supports both parallel and sequential approvals, so reviewers with no dependency on each other can work at the same time rather than queueing.

Does ApprovalMax charge for each approver?

No. Every current ApprovalMax plan size for Xero and QuickBooks Online includes unlimited active approvers, so adding an approver adds no seat charge. Price is set by feature plan, organisation count and approved-document volume: 100 documents a month on Small, 300 on Medium and 500 on Large.

Is ApprovalMax cheaper than Stampli?

ApprovalMax publishes Xero and QuickBooks Online pricing from US$50 per organisation per month billed yearly, excluding tax, with unlimited approvers. Stampli does not publish a subscription price and requires a quote, so no public comparison figure exists. NetSuite terms are quoted separately for both products.

Do ApprovalMax and Stampli work with QuickBooks Online?

Yes. Both publish dedicated QuickBooks Online offerings. The difference is in approval structure rather than connectivity: ApprovalMax adds parallel approvals and unlimited approvers, and extends approval workflows to documents beyond supplier bills on higher plans.

Does ApprovalMax offer native OCR?

Yes. ApprovalMax Capture reads supported documents inside the product and is included from the Standard plan, so invoice data extraction does not require a separate subscription or a third-party tool alongside the approval workflow.

Does Stampli support purchase orders?

Yes. Stampli's product range includes procurement and purchase-order functions alongside invoice matching, with the automation level set by the package purchased. ApprovalMax includes purchase-order workflows on every Standard plan and adds bill-to-PO matching on Advanced and Premium.

Bring approval control to your accounting platform

ApprovalMax runs parallel and sequential approvals across Xero, QuickBooks Online and NetSuite, with unlimited approvers on current Xero/QBO plan sizes.

Pricing reviewed on 14 September 2026. Editorial corrections and selected feature checks completed on 15 September 2026. Existing accounts may hold different contract terms.