Is Adyen or Fiken better?

Neither clearly leads. Adyen starts at $0.13/per-transaction and Fiken at 219/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Adyen or Fiken?

Adyen starts at $0.13/per-transaction and Fiken at 219/month.

Does Adyen or Fiken run on more platforms?

Adyen runs on Web, Api, Pos. Fiken runs on Web.

What is Adyen best used for?

Adyen is most often used for card acquiring with interchange plus pricing for larger merchants, accepting local payment methods across multiple countries, settling in several currencies through linked bank accounts, unified online and in-person payments. Of those, card acquiring with interchange plus pricing for larger merchants and accepting local payment methods across multiple countries are not what Fiken is typically brought in for.

What can Adyen do that Fiken cannot?

Adyen covers Payment processing, Risk management, Unified commerce, Issuing.

Accounting · head to head

Adyen vs Fiken

Adyen

Accounting

The payments platform built for growth

From: $0.13/per-transaction
Rated: -

Full review Website

Fiken

Accounting

Norwegian accounting software for sole proprietors and small companies

From: 219/month
Rated: -

Full review Website

The short version

Each has a real cost: Adyen there is a minimum monthly invoice, set by industry and business model and only disclosed through the sales team, so small volumes are not economic; Fiken bank integration available only as add-on (69 NOK/month)
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Adyen and Fiken actually diverge.

Attributes where Adyen and Fiken differ
Attribute	Adyen	Fiken
Starting price	$0.13/per-transaction	219/month
Pricing model	usage-based	subscription
Platforms	Web, Api, Pos	Web
Founded	2006	Unknown

Identical on both: free tier (No), user rating (Not yet rated), category (Accounting).

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 Adyen

Payment processing
Risk management
Unified commerce
Issuing
Platform payments
SAP
Salesforce
Oracle

Only in Fiken

Nothing recorded that Adyen does not also cover.

What people use each for

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

Adyen

Card acquiring with interchange plus pricing for larger merchantsnot Fiken
Accepting local payment methods across multiple countriesnot Fiken
Settling in several currencies through linked bank accountsnot Fiken
Unified online and in-person paymentsnot Fiken

Fiken

Solo accounting and invoicing for small businessesnot Adyen
Multi-user accounting collaboration at no extra costnot Adyen
Invoice management with EHF e-invoice supportnot Adyen
Bank integration for transaction trackingnot Adyen

Where each one falls short

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

Adyen

There is a minimum monthly invoice, set by industry and business model and only disclosed through the sales team, so small volumes are not economic
Published fees are indicative rather than a rate card, with real pricing negotiated
Interchange++ means the card cost varies per transaction rather than being a single predictable percentage
Alternative payment methods carry their own rates on top, such as 3.3 percent plus $0.10 for American Express in North America

Fiken

Bank integration available only as add-on (69 NOK/month)
Project accounting requires separate add-on (69 NOK/month)
Payroll and employee features cost extra (69 NOK/month)
Physical mail invoicing costs 25 NOK per invoice

Pricing, plan by plan

Adyen

$0.13/per-transaction

Transaction-Based Pricing$undefined/mo
- Fixed $0.13 USD per transaction
- Variable fee determined by payment method
- No setup fees

Fiken

219/month

Base Plan$219/month
- Complete accounting functionality
- Unlimited invoice sending via email and EHF
- Unlimited user accounts

Which should you pick?

Choose Adyen if

You need payment processing.
You work on Web, Api, Pos.
You also want risk management.

Adyen review

Choose Fiken if

Nothing in the data separates Fiken from Adyen on the points above - pick on price and on how each one feels to use.

Fiken review

Questions people ask

Is Adyen or Fiken better?: Neither clearly leads. Adyen starts at $0.13/per-transaction and Fiken at 219/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Adyen or Fiken?: Adyen starts at $0.13/per-transaction and Fiken at 219/month.
Does Adyen or Fiken run on more platforms?: Adyen runs on Web, Api, Pos. Fiken runs on Web.
What is Adyen best used for?: Adyen is most often used for card acquiring with interchange plus pricing for larger merchants, accepting local payment methods across multiple countries, settling in several currencies through linked bank accounts, unified online and in-person payments. Of those, card acquiring with interchange plus pricing for larger merchants and accepting local payment methods across multiple countries are not what Fiken is typically brought in for.
What can Adyen do that Fiken cannot?: Adyen covers Payment processing, Risk management, Unified commerce, Issuing.

Answered from the vendors’ own pages

Adyen: How much does Adyen charge per transaction?

Adyen charges a fixed $0.13 USD per transaction plus a variable fee based on the payment method used. Credit cards typically cost $0.13 + 0.60% + interchange, while digital wallets and BNPL options cost between $0.13 + 0.99% to $0.13 + 4.99%+, depending on the specific method and region.

Source

Fiken: Is there a free trial for Fiken?

Yes, Fiken offers a 30-day free trial with no credit card required. After the trial, the base plan costs 219 NOK per month.

Source

Adyen: Does Adyen have monthly subscription or setup fees?

No, Adyen has no setup fees or monthly recurring charges. You pay only for each transaction processed. The transaction fee structure remains the same regardless of transaction volume or business size.

Source

Fiken: Do additional users cost more on Fiken?

No, Fiken includes unlimited user accounts at no extra cost on the base plan.

Source

Adyen: What's Adyen's Interchange++ pricing option?

Adyen offers an Interchange++ transparent pricing model that passes interchange and scheme fees directly to merchants instead of bundling them into a percentage rate. This allows visibility into exact costs for each payment method.

Source

Fiken: What add-ons are available and how much do they cost?

Monthly add-ons include bank integration, project accounting, KID number system, and API access (69-99 NOK each). Time tracking, payroll, and expense reimbursements also cost 69 NOK per month. Annual tax filing costs 1,290 NOK for sole proprietors or 1,590 NOK for limited companies.

Source

Adyen: Can I process payments in multiple currencies with Adyen?

Yes, Adyen supports 100+ payment methods across multiple currencies. You can link multiple bank accounts in different currencies to avoid currency conversion fees on international transactions.

Source

Fiken: What are the per-transaction costs?

SMS invoicing costs 3 NOK, e-invoicing via Vipps costs 5 NOK, physical mail invoicing costs 25 NOK, and credit checks cost 15 NOK per transaction.

Source

Adyen vs Fiken

Adyen

Fiken

The short version

Where they differ

What each one covers

Only in Adyen

Only in Fiken

What people use each for

Adyen

Fiken

Where each one falls short

Adyen

Fiken

Pricing, plan by plan

Adyen

Fiken

Which should you pick?

Choose Adyen if

Choose Fiken if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Adyen

More on Fiken

Keep looking

Other head to heads