The Short Answer

These three products are not competing for the same buyer, and the pricing pages say so more clearly than the marketing does. Melio publishes five tiers and a complete transaction fee schedule, down to the $1.50 it charges to post a paper check. Tipalti publishes two floors — $99 a month for Accounts Payable, $249 for Mass Payments — and states plainly that per-invoice and per-payment fees apply on top, without publishing a single one of them. Stampli publishes no number anywhere; its pricing page carries a Request a Quote button and an inclusions table.

Read as a signal rather than a nuisance, that tells you the shape of each business. Melio prices like a product you buy without talking to anyone. Tipalti prices like a payments network, where the platform fee is the entry ticket and the volume is the revenue. Stampli prices like an implementation, where invoice count, entity count and which ERP you run change the number enough that a list price would mislead.

Two findings from the arithmetic below, neither of which appears on any page ranking for this query. First, Melio's middle tier never wins — because the $0.50 ACH overage is identical on every plan, Boost costs between $9 and $24 a month more than Core at every possible ACH volume. Second, Melio's published fee schedule becomes a liability at scale: at 900 international payouts a month, the $20 flat international ACH fee alone is roughly $18,000 a month, against a $249 floor for the Tipalti product built for exactly that job.

Every figure below was read from the vendor's own pricing page on 28 August 2026 and is recorded with its check date in our verified accounts payable directory. We sell none of these products and take no payment for placement.

What Each One Is Built Around

Feature grids flatten these three into near-identical products. They are not. Each has one design decision at its centre, and everything else follows from it.

Stampli is built around a conversation. Most AP tools treat an invoice as a record to route; Stampli attaches a dedicated communication thread to each one, so the question a controller asks about a line item, the department head's answer and the vendor's reply sit against the document instead of scattering across an email chain nobody can reconstruct at audit time. Outside contacts can be pulled into a single invoice with limited access — they see the image and a box to answer one question. That is the difference between a comment feature and an approval workflow, and it is why the product shows up in finance teams whose bottleneck is chasing approvers rather than keying data.

Tipalti is built around the payee. Its centre of gravity is everything that happens before money moves: collecting the right tax form from a contractor in a country you have never paid into, validating bank details in a local format, and reporting what you paid at year end. The platform determines which form a payee owes from their residence and tax classification — W-9 for US payees, or the appropriate W-8 variant (BEN, BEN-E, EXP, IMY, ECI) or Form 8233 for foreign ones — runs IRS TIN matching, then prepares and e-files 1099-NEC, 1099-MISC and 1042-S returns. Reach is the other half: the vendor states 200-plus countries and territories, 120 currencies and 50-plus payment methods.

Melio is built around the small business that pays bills from QuickBooks. Its distinguishing feature is not automation but a payment trick: you can pay a supplier who only accepts a bank transfer or a paper check by putting the bill on a credit card, keeping the float and the card points while the vendor is paid the way they asked. Add two-way sync with QuickBooks Online, QuickBooks Desktop, Xero and NetSuite, invoicing on the receivables side, and financing across up to twelve installments, and the fit is a small business or the accounting firm running its books.

One fact about Melio that most listicles ranking for this comparison still omit: it is no longer independent. Xero completed its acquisition on 15 October 2025, at $2.15 billion in cash plus shares valued at $360 million and contingent payments up to $500 million. If you are signing a multi-year commitment, the roadmap now runs through an accounting platform that competes with QuickBooks — worth a question, given that QuickBooks sync is why many buyers shortlist it.

Published, Floored, Quoted

Here is every number the three vendors publish between them, in full. The asymmetry is the point.

VendorWhat is publishedWhat is not
MelioFive tiers ($0 / $25 / $55 / $80 monthly; $0 / $20 / $44 / $64 annual; Platinum custom), ACH allowances per tier, seat costs, and a complete transaction fee schedulePlatinum terms; the cost of the pay-over-time financing
TipaltiTwo floors: AP from $99/mo, Mass Payments from $249/mo, both including unlimited users and a payee portalEvery per-invoice and per-payment fee, all FX margins, and the price of the Procurement, Expenses and Treasury modules
StampliNothing. One quoted core product plus four separately-sold add-onsEverything, including whether the bill scales on invoice volume, entity count or users

Melio's published fee schedule, in full, because it is the only one that exists: $0.50 per ACH beyond the plan allowance, $1.50 per check, $20 for a fast check, $10 per wire, 1% for a same-day wire ($10 minimum, $75 maximum), 2.9% for a card payment whether it lands as ACH or as a check, and $20 flat or 1% for an international ACH depending on currency. Additional users are $10 a month, or $8 on annual billing, on both Core and Boost; the Unlimited tier includes them. Go is capped at a single user.

Tipalti's page names four variables that drive the real number — payments processed, number of legal entities, modules enabled, and the global payment methods and currencies used — which is a fair disclosure and also a warning. A multi-entity company paying in many currencies should not anchor on $99. Third-party pricing trackers report a tiered AP structure of Select at $99 and Advanced at $199; Tipalti's own page shows no named tiers at all, so we record that as unconfirmed by the vendor rather than repeating it as fact.

Stampli's unpriced page still contains something useful, which is the list of what it says sits in the core product rather than behind an upper tier: unlimited entities and locations, unlimited vendors, PO matching, AI invoice capture, 12 pre-built reports and a dedicated customer success manager. One discrepancy our verification pass caught and wrote into the listing: that inclusions table describes the bundled matching as semi-automated 2-3 way matching, weaker phrasing than the agentic, LLM-assisted PO matching the product page markets. Ask which behaviour the quoted plan actually buys.

Melio's Tier Ladder Is Inverted

Melio is the only one of the three you can model exactly, so we did. The result is not what the pricing page's layout implies.

The mechanism is simple: the $0.50 ACH overage is charged at the same rate on every plan. A higher tier therefore only saves money when the value of its extra free payments exceeds the extra subscription cost. Going from Core to Boost on annual billing costs $24 more a month and buys 30 more free ACH payments — worth $15 at the overage rate. You are paying $24 for $15 of allowance.

Write it out. On annual billing, with no extra seats:

ACH payments/monthGo ($0, 5 free, 1 user)Core ($20, 20 free)Boost ($44, 50 free)Unlimited ($64)
20$7.50$20.00$44.00$64.00
40$17.50$30.00$44.00$64.00
60$27.50$40.00$49.00$64.00
100$47.50$60.00$69.00$64.00
108$51.50$64.00$73.00$64.00
150$72.50$85.00$94.00$64.00

Boost is never the cheapest column. It sits between $9 and $24 a month above Core at every volume in the table and at every volume outside it. That is a structural result, not an artefact of the rows we picked: the two tiers charge identical overage and identical seat rates, so the gap can never close. If Boost is on your shortlist, the question to ask Melio is what it adds besides the ACH allowance, because the allowance alone does not pay for it.

The genuine decision is Core versus Unlimited, and it turns on seats at least as much as on volume. Unlimited includes users; Core charges $8 a month for each one on annual billing. Adding S extra seats to Core moves the crossover to N = 108 − 16S ACH payments a month:

Extra users beyond the firstUnlimited becomes cheaper above
0108 ACH payments/month
192
276
360
444
528
6 or moreEvery volume — Core's base plus seats already exceeds $64

On monthly rather than annual billing the same logic gives N = 130 − 20S, because the tier gap widens to $55 while the seat charge rises to $10. Two caveats we will not paper over. The tables price ACH payments and seats only — checks, wires and card payments cost the same on every tier, so they shift each column equally without moving the crossover, but non-payment features may differ between tiers and the vendor's feature grid is where to confirm that. And the free Go tier, cheapest of all on payment cost, allows exactly one user, which is what most businesses actually pay Core to escape.

The Payee Count Where Transparency Stops Helping

Melio's published fee schedule is genuinely useful at 40 bills a month. Run it forward and it becomes the clearest illustration of why these products are not substitutes.

The scenario: a marketplace paying 900 overseas contributors a month — the payee shape Tipalti's Mass Payments product exists for. Priced on Melio's published rates:

LineCalculationMonthly
Melio Unlimited subscription$64, annual billing$64
International ACH in USD900 × $20 flat$18,000
Melio total—~$18,064
Tipalti Mass Payments floorPublished starting price$249
Tipalti per-payment feesNot published — the number that decides thisUnknown

We cannot finish that table, and saying so is the honest result. Tipalti's per-payment fee would have to average about $19.70 for the two to meet, which is implausible for a product marketed on high-volume payouts — but implausible is not verified, and Tipalti publishes nothing. The correct conclusion is not that Melio costs $18,000; it is that Melio is not built for this and its own price list says so loudly. Its mobile apps handle US-to-US business payments only. Nine hundred international payees is the job the W-8 collection, TIN matching and 1042-S e-filing exist to serve.

Run the same exercise at the other end and it reverses. A US services business paying 60 domestic suppliers a month by ACH with two people touching the process pays $40 a month on Melio Core, plus $16 in seats, plus whatever checks and wires it posts. Tipalti's floor alone is $99 before a single transaction fee, for a payee-onboarding and global tax-reporting engine the business will never open. That is not Tipalti being overpriced. It is a $99 product being asked to do a $56 job.

If you are still sizing the workload rather than the software, our invoice due date calculator and invoice generator cover the manual version of this, and the percentage calculator will run the fee math above against your own volumes.

What the 2.9% Card Fee Actually Buys

Melio's card feature is the one genuinely distinctive thing in its price list, and reviews describe it as either free money or an expensive gimmick. It is neither, and three lines of arithmetic settle it.

You pay 2.9% to route a bill through a credit card to a supplier who does not accept cards. On a card returning 2% you are down 0.9% net. What that buys is time: roughly 45 days between paying the bill and settling the card statement, depending where in the cycle the payment falls.

Annualise it. 0.9% over 45 days is 0.9% × (365 ÷ 45) ≈ 7.3% a year on the money you deferred. On a $10,000 supplier bill that is $290 in fees, $200 back in rewards, $90 net for six and a half weeks of working capital.

So the rule is a comparison, not a verdict. If you have a line of credit priced below roughly 7.3%, use the line of credit. If you do not have one, or the realistic alternative is paying the supplier late and damaging the relationship, 0.9% is a defensible price for the float and materially cheaper than most short-term business borrowing. If your card returns 1% rather than 2%, the same calculation gives 1.9% net and about 15.4% annualised — a different answer entirely. Check your actual card rate before treating this as a strategy. Our profit margin calculator shows quickly what a 0.9% financing cost does to the margin on the job the bill relates to.

The ERP Question Decides It First

In practice this comparison is usually over before pricing is discussed, because the general ledger eliminates two of the three.

Your accounting systemMelioTipaltiStampli
QuickBooks Online / DesktopTwo-way syncNamedNamed
XeroTwo-way syncNamedNot named
NetSuiteTwo-way syncNamedNamed
Sage Intacct (and Construction)—Sage named generallyNamed specifically
SAP ECC / S/4HANA—NamedNamed specifically
Microsoft Dynamics 365 BC / Finance / GP—Named generallyAll three named
Acumatica, Oracle Fusion, Sage 100——Named specifically

Stampli claims certified integrations with more than 70 ERPs and names the ones above explicitly, which is the substantive reason it appears in mid-market and construction finance stacks that lighter bill-pay tools cannot serve. If your ledger is Dynamics GP or Sage Intacct Construction, the shortlist is one product long and the quote conversation is unavoidable. If your ledger is QuickBooks and your suppliers are domestic, the opposite holds, and paying for 70 ERP connectors is paying for headroom you will never use.

The same reasoning governs the receivables side of the same finance team, where the integration matrix is equally decisive — we mapped it across fifteen platforms in AR automation and your ERP.

What to Demand in the Stampli Quote

Since a quote is the only way to price Stampli, and Tipalti's real number also arrives by conversation, the useful output of this comparison is a list of questions. These five change the number most, drawn from what each vendor's own page discloses and declines to.

  1. Break the quote out by module. Stampli sells Procurement, Direct Pay, Stampli Card and Advanced Vendor Management separately from the AP core. A quote for the suite is not a quote for AP, and comparing a suite quote to Tipalti's $99 AP floor compares two different products.
  2. Ask which meter the price scales on — invoice volume, entity count or users. Stampli publishes nothing on this, and it determines whether year three resembles year one.
  3. Get Tipalti's per-transaction schedule and FX margin in writing. For any high-volume or cross-border use case, those lines — not the platform fee — are the cost, and they are the only major numbers the vendor does not publish.
  4. Ask Stampli which matching behaviour the quoted plan buys, given the gap between semi-automated 2-3 way matching included on the inclusions table and the LLM-assisted matching on the product page.
  5. Price implementation separately. Stampli describes deployment as weeks rather than months and includes a dedicated customer success manager. Tipalti states standard implementations are included but complex environments may require paid professional services. Establish which side of that line you are on before signing.

One asymmetry worth naming: Stampli offers no free trial. Melio's Go tier is a real free plan rather than a trial, so you can run five ACH payments a month through it indefinitely to test the workflow. That is a meaningful evaluation advantage at the small end and irrelevant at the large one.

The Decision

Three rules, in the order they actually apply.

Start with the payee list, not the invoice count. If your payees are international, high-churn and need tax forms collected before you can pay them — contractors, creators, affiliates, marketplace sellers — Tipalti is the only one of the three built for it, and the $99 or $249 floor is the least interesting fact about the quote. Ask for the transaction schedule first.

Then check the ledger. If it is SAP, Oracle Fusion, Acumatica, Sage Intacct or any Dynamics variant, Stampli is the product with the certified connector, and its per-invoice conversation thread is a real advantage in exactly the environments where approvals sprawl across departments. Budget for a quote-led evaluation.

Otherwise it is Melio, and probably on Core. A US business paying domestic suppliers from QuickBooks or Xero gets a published price, a real free tier, and a card route that converts a supplier who wants a check into 45 days of float for 0.9% net. Take Core over Boost at any volume, and move to Unlimited when sixteen times your extra seat count plus your monthly ACH count crosses 108.

The uncomfortable observation underneath all three: in a category where most large vendors publish nothing, the product with the fully published fee schedule looks expensive precisely because you can see what it costs. That is not evidence it is expensive. It is evidence you have a number.

FAQ

How much do Stampli, Tipalti and Melio cost?

Only Melio publishes a complete price: $0, $25, $55 and $80 a month ($0, $20, $44 and $64 annual), with every transaction fee published — $0.50 per ACH beyond allowance, $1.50 per check, $10 per wire, 2.9% per card payment, $20 flat for an international ACH in USD. Tipalti publishes floors only, $99 a month for AP and $249 for Mass Payments, and states that per-invoice and per-payment fees apply on top without publishing them. Stampli publishes nothing at any tier.

Which Melio plan is cheapest?

Boost never is. Because the $0.50 ACH overage is identical on every plan, Boost costs between $9 and $24 a month more than Core at every ACH volume. The real choice is Core versus Unlimited: with no extra users Unlimited wins above 108 ACH payments a month; with three extra users, above 60; from six extra users, at any volume.

Can Melio replace Tipalti for international payments?

Not at volume. At $20 flat per international ACH in USD, 900 overseas payouts a month is roughly $18,000 in fees against a $249 monthly floor for Tipalti Mass Payments plus unpublished per-payment fees. Melio's transparency is an advantage at 40 bills a month and a warning label at 900 payees.

Why does Stampli not publish pricing?

It sells one quoted core product with four separately-priced add-ons into mid-market teams whose invoice volume, entity count and ERP complexity vary widely. The useful part of the unpriced page is the inclusions list: unlimited entities and locations, unlimited vendors, PO matching, AI invoice capture, 12 pre-built reports and a dedicated CSM, stated as core rather than tiered. There is no free trial.

Is paying a supplier by credit card worth the 2.9% fee?

On a 2% cashback card the net cost is about 0.9% for roughly 45 days of float, which annualises to around 7.3%. Cheaper than most short-term business borrowing, more expensive than a good line of credit. On a 1% card it is 1.9% net and about 15.4% annualised, which usually is not worth it.

Does it matter that Xero owns Melio?

For a short commitment, not much. For a multi-year one it is worth asking about, because the acquisition completed on 15 October 2025 and the roadmap now sits inside an accounting platform competing directly with QuickBooks — and QuickBooks sync is why many buyers shortlist Melio in the first place. Ask what the two-way QuickBooks Desktop sync is committed to for the length of your term.

Prices and inclusions read from stampli.com, tipalti.com and melio.com on 28 August 2026 and recorded with check dates in our verified directory listings; Melio's tier allowances, seat costs and full fee schedule were re-confirmed against the vendor pricing page the same day. The break-even tables price ACH payments and seats only, and assume the published overage rate applies uniformly, as the vendor states. Tipalti's transaction fees are not published and no estimate of them is asserted here. Prices change and enterprise terms are negotiated; this is a software comparison, not accounting or tax advice.