Softwr

Accounting · head to head

Polar vs Trustly

Polar logo

Polar

Accounting

Billing and revenue platform for AI and infrastructure companies

From
Free
Rated
-
Full reviewWebsite
Trustly logo

Trustly

APIs

Pay-by-bank payments network, majority-owned by private equity firm Nordic Capital

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Polar has a free tier, so it costs nothing to try first.
  • Each has a real cost: Polar percentage-based fees higher than some specialized processors for high-volume transactions; Trustly it is majority-owned by Nordic Capital, a private equity firm, so its long-term roadmap is ultimately oriented toward an eventual sale or IPO rather than indefinite independent operation.
  • They diverge on capability: Polar covers Usage Billing, Trustly covers Pay by bank checkout.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Polar and Trustly actually diverge.

Attributes where Polar and Trustly differ
AttributePolarTrustly
Starting priceFreeOn request
Pricing modelPercentage of transaction plus per-transaction feequote
Free tierYesNo
CategoryAccountingAPIs

Identical on both: platforms (Web, API), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Polar

  • Usage Billing
  • Subscriptions
  • Seat Management
  • Prepaid Credits
  • Hosted Checkout
  • Cost Insights
  • Merchant of Record

Only in Trustly

  • Pay by bank checkout
  • Instant refunds
  • Verified payouts
  • Multi-market bank connectivity
  • Merchant dashboard and reconciliation
  • Fraud and risk tooling

What people use each for

The jobs each tool is most often brought in to do.

Polar

  • Billing for token and API call consumption by LLM applicationsnot Trustly
  • Managing tiered pricing for infrastructure usage-based servicesnot Trustly
  • Handling subscription and usage hybrid modelsnot Trustly
  • Monetizing AI APIs with usage metering and creditsnot Trustly

Trustly

  • An e-commerce merchant wanting a lower-cost alternative or complement to card payment acceptancenot Polar
  • A gaming or gambling operator needing verified, instant payouts to players' bank accountsnot Polar
  • A merchant wanting instant refunds processed directly to a customer's bank account rather than card reversal delaysnot Polar
  • A business in a market with strong open banking adoption wanting pay-by-bank as a checkout optionnot Polar

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Polar

  • Percentage-based fees higher than some specialized processors for high-volume transactions
  • Merchant of record model may not suit companies preferring direct payment control
  • Free Starter tier limited with 5% fees reducing appeal for production use
  • Setup and integration effort required despite API simplicity

Trustly

  • It is majority-owned by Nordic Capital, a private equity firm, so its long-term roadmap is ultimately oriented toward an eventual sale or IPO rather than indefinite independent operation.
  • Consumer familiarity with paying by bank transfer still lags card payments in most markets, so merchants typically see it used as a secondary option rather than a full card replacement.
  • The 1.15 to 3.15% merchant fee range is not a single published rate, so a merchant cannot know its actual cost without a sales negotiation.
  • As with all open banking-dependent payment methods, reliability depends on the consistency of the underlying banks' own APIs, which Trustly does not control.
  • Its verified payout functionality is heavily used in gaming and gambling, a sector with additional regulatory scrutiny, which is worth factoring in when evaluating vendor risk exposure by association.

Pricing, plan by plan

Polar

Free
  • StarterFree
    • 5% + $0.50 per transaction
    • Free tier for testing
    • Basic features
  • Pro$20/month
    • 3.8% + $0.40 per transaction
    • Full platform access
    • Cost insights
  • Growth$100/month
    • 3.6% + $0.35 per transaction
    • Priority support
    • Volume benefits
  • Scale$400/month
    • 3.4% + $0.30 per transaction
    • Dedicated support
    • Custom integration

Trustly

On request
  • Trustly$undefined/month
    • Typical merchant cost of 1.15% to 3.15% depending on volume and market
    • Exact rate negotiated per merchant, not published as a flat card

Which should you pick?

Choose Polar if

  • You need usage billing.
  • You want to start without paying.
  • You work on Web, API.
  • You also want subscriptions.
Polar review

Choose Trustly if

  • You need pay by bank checkout.
  • You work on Web, API.
  • You also want instant refunds.
Trustly review

Questions people ask

Is Polar or Trustly better?
Neither clearly leads. Polar starts at Free and Trustly at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Polar or Trustly?
Polar has a free tier; the other does not. Paid plans start at Free for Polar and On request for Trustly.
Does Polar or Trustly run on more platforms?
Both run on Web, API, so platform support will not decide this one for you.
Can I use Polar for free?
Yes. Polar has a free tier, so you can try it without paying. Trustly starts at On request.
What is Polar best used for?
Polar is most often used for billing for token and api call consumption by llm applications, managing tiered pricing for infrastructure usage-based services, handling subscription and usage hybrid models, monetizing ai apis with usage metering and credits. Of those, billing for token and api call consumption by llm applications and managing tiered pricing for infrastructure usage-based services are not what Trustly is typically brought in for.
What can Polar do that Trustly cannot?
Polar covers Usage Billing, Subscriptions, Seat Management, Prepaid Credits. Trustly covers Pay by bank checkout, Instant refunds, Verified payouts, Multi-market bank connectivity.

Answered from the vendors’ own pages

Polar: Do you handle international payments and taxes?

Yes, Polar acts as merchant of record in 100+ markets, handling payment processing, tax collection, and compliance automatically.

Source
Trustly: Who owns Trustly?

Nordic Capital, a private equity firm, holds a 51.1% majority stake; Alfven & Didrikson and BlackRock hold smaller stakes.

Polar: Is there a free tier?

Yes, the Starter plan is free and charges 5% + $0.50 per transaction, ideal for testing and early-stage development.

Source
Trustly: Is Trustly going public?

It has discussed an IPO but as of its most recent comments said one remained at least a year away.

Polar: Do you offer discounts for startups?

Yes, the Startup Program provides the Scale plan free for 12 months for early-stage AI companies.

Source
Trustly: What does it typically cost a merchant?

Roughly 1.15% to 3.15% of transaction value depending on volume and market, negotiated per merchant.

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