What are the best AI payment processors for digital goods?

As of November 6, 2026: Stripe Managed Payments for most AI products already on Stripe (Stripe becomes merchant of record for 3.5% per transaction on top of normal Stripe payment fees, with tax handled in 80+ countries); Polar for indie developers who bill for tokens or usage (merchant of record, built-in usage-based billing, 5% + 50 cents on the free plan or 3.4–3.8% on paid plans); Paddle for B2B SaaS that wants a mature merchant of record at 5% + 50 cents; Lemon Squeezy for simple one-off downloads and licence keys at 5% + 50 cents; and plain Stripe when you want the lowest fees and will handle sales tax yourself.

What is a merchant of record and do I need one to sell an AI app?

A merchant of record is the company that legally sells your product to the customer. It collects and remits sales tax, VAT and GST, handles fraud and chargebacks, and sends receipts. Digital goods are taxed where the buyer lives, so a solo founder selling to 40 countries would otherwise register for tax in many of them. If you sell globally and have no finance team, a merchant of record is usually worth its higher fee.

Which payment processor is best for usage-based AI billing?

Polar and Stripe both meter usage. Polar ingests events such as LLM tokens consumed through its Events Ingestion API, turns them into meters and charges metered prices while acting as merchant of record. Stripe Billing does metered usage too, and Stripe Managed Payments supports subscriptions through Billing. Paddle and Lemon Squeezy are built mainly around subscriptions and one-off purchases.

How much does a merchant of record cost compared with Stripe?

On a $30 sale, a 5% + 50 cent merchant of record keeps $2.00 before any international surcharge. Plain Stripe in the US starts at 2.9% + 30 cents (about $1.17) but you then owe the work of collecting and filing sales tax and VAT. Stripe Managed Payments adds 3.5% (about $1.05) on top of the Stripe payment fee. Polar's Scale plan ($400 a month) charges 3.4% + 30 cents.

Quick Answer

Best AI Payment Processors for Digital Goods (2026 Guide)

Published: November 6, 2026

The short answer

If you sell an AI product to consumers or small businesses worldwide, use a merchant of record (MoR) so someone else files the sales tax. As of November 6, 2026:

Stripe Managed Payments — best default if you already use Stripe.
Polar — best for developers billing per token or per call.
Paddle — best for B2B SaaS that wants an established MoR.
Lemon Squeezy — best for simple digital downloads and licence keys.
Plain Stripe — lowest fees, but tax compliance is your job.

This page is about selling digital goods (an AI app, API credits, prompts, models, templates). If your AI agent is the one buying, see the hub page best AI agent payment solutions.

The comparison

	Merchant of record?	Fee (list, Nov 6, 2026)	Usage-based billing	Best for
Stripe Managed Payments	Yes (customer sees “Sold through Link”)	3.5% per transaction plus Stripe payment fees	Via Stripe Billing	AI SaaS already on Stripe
Polar	Yes	Starter free: 5% + 50¢ · Pro $20/mo: 3.8% + 40¢ · Growth $100/mo: 3.6% + 35¢ · Scale $400/mo: 3.4% + 30¢	Yes, event ingestion + meters	Token/usage billing, indie devs
Paddle	Yes	5% + 50¢ per checkout transaction; custom for high volume	Subscriptions; no native token metering	B2B SaaS, invoicing
Lemon Squeezy	Yes	5% + 50¢, extra fees in edge cases	Subscriptions, licence keys	Downloads, small software
Stripe (standard)	No — you are	2.9% + 30¢ US cards; Stripe Tax extra	Yes, Stripe Billing	Teams with a finance function

Fees from each vendor’s pricing page or docs on November 6, 2026. International cards, currency conversion, payouts and disputes cost extra on all of them: Polar, for example, adds 1.5% for international cards and $15 per dispute.

1. Stripe Managed Payments — the default for Stripe users

Managed Payments is Stripe’s own merchant-of-record service for SaaS, software, digital content and downloads. Stripe calculates, collects, files and remits sales tax, VAT and GST in more than 80 countries, runs fraud prevention, handles disputes, and its Link service gives customers receipts and transaction-level support. It works with Stripe Checkout and Payment Links, and subscriptions run through Stripe Billing. The price is 3.5% per successful transaction on top of standard Stripe payment fees. Two limits: it does not support platforms (Stripe Connect), and customers see Link as the seller.

Pick it if your product already runs on Stripe and you want tax off your plate without migrating.

2. Polar — best for usage-based AI billing

Polar is a merchant of record aimed at developers, with every rate published. Its Usage Based Billing ingests events from your app (Polar’s own first example is “a customer consumed AI LLM tokens”), aggregates them into meters and charges metered prices, which is exactly how most AI products want to bill. The free Starter plan is 5% + 50¢; paid plans swap part of the percentage for a monthly fee, and Polar states the break-even points: about $1,379 a month in sales for Pro, $5,634 for Growth and $19,048 for Scale. Organisations created before May 27, 2026 keep an Early Member rate of 4% + 40¢ (+0.5% on subscriptions).

Pick it if you charge per token, per image or per API call and want tax handled.

3. Paddle — the established B2B choice

Paddle charges 5% + 50¢ per checkout transaction with no monthly fees, and that covers payments, checkout, subscription billing, global tax compliance, fraud protection, chargebacks and buyer support. It also sends tax-compliant invoices internationally, which B2B buyers expect, and offers custom pricing for high-volume, low-value transactions. It has no event-based token metering like Polar’s, so usage pricing usually becomes credit packs or tiers.

Pick it if you sell AI software to businesses and want a long-standing MoR with invoicing.

4. Lemon Squeezy — simplest for downloads

Lemon Squeezy (owned by Stripe since 2024) consolidates its fees into 5% + 50¢ per transaction, with small additional fees in edge cases. It is strongest at what it was built for: one-off digital downloads with signed, throttled links, licence keys issued and revoked automatically, coupons, bundles, affiliates and a hosted storefront. For a new subscription AI product, Stripe now steers digital sellers toward Managed Payments, so compare the two before you start.

Pick it if you sell a downloadable model, prompt pack, plugin or desktop app with licence keys.

5. Plain Stripe — cheapest, if you handle tax

Without an MoR you are the seller. Fees are lower (2.9% + 30¢ for US cards; outside the US the rates differ, for example 2.5% + €0.25 for UK cards from an Estonian account, plus 2% when currency conversion is needed), and Stripe Billing meters usage. But you must register for and file sales tax and VAT where you have obligations; Stripe Tax calculates it for an extra fee.

Pick it if you mainly sell to businesses in one country or already have tax registrations.

What it costs on a $30 sale

Option	Approximate fee	What you still do yourself
Paddle / Lemon Squeezy / Polar Starter	$2.00	Nothing on tax
Polar Scale (3.4% + 30¢, $400/mo)	$1.32 + share of $400	Nothing on tax
Stripe Managed Payments	$1.05 + Stripe payment fee (~$1.17 US)	Nothing on tax
Plain Stripe (US card)	$1.17 + Stripe Tax if used	Register, file and remit tax

Before international-card and currency surcharges. Run the numbers at your real average order value: the fixed 30–50¢ dominates on small purchases like $5 credit top-ups, so sell credits in larger packs.

How to choose

Are you already on Stripe? Turn on Managed Payments.
Do you bill per token or per call? Polar, or Stripe Billing with Managed Payments.
Selling to companies that need invoices? Paddle.
One-off downloads with licence keys? Lemon Squeezy.
Do you have tax registrations and a finance person? Plain Stripe.

For pricing the product itself, see how to price an AI product with token costs, and check model costs against current API prices.

Last verified: November 6, 2026.