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Accounting · head to head

Fiken vs IRIS KashFlow

Fiken logo

Fiken

Accounting

Norwegian accounting software for sole proprietors and small companies

From
219/month
Rated
-
Full reviewWebsite
IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Fiken bank integration available only as add-on (69 NOK/month); IRIS KashFlow advertised monthly prices of £1.35 (Starter) and £2.75 (Business) are a 90% promotional discount off the standard £13.50 and £27.50 rates, and the promotion is described as lasting 6 months before reverting
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Fiken and IRIS KashFlow actually diverge.

Attributes where Fiken and IRIS KashFlow differ
AttributeFikenIRIS KashFlow
Starting price219/month£13.5/month

Identical on both: pricing model (subscription), free tier (No), platforms (Web), user rating (Not yet rated), category (Accounting).

What people use each for

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

Fiken

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

IRIS KashFlow

  • business accountingnot Fiken
  • invoicing and billingnot Fiken
  • VAT managementnot Fiken

Where each one falls short

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

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

IRIS KashFlow

  • Advertised monthly prices of £1.35 (Starter) and £2.75 (Business) are a 90% promotional discount off the standard £13.50 and £27.50 rates, and the promotion is described as lasting 6 months before reverting
  • Listed prices are in GBP plus VAT, and the platform's plans are built around UK VAT filing rather than other tax regimes
  • Annual pricing is quoted at RRP £162/year (Starter) and £291.50/year (Business) before the same promotional reduction

Pricing, plan by plan

Fiken

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

IRIS KashFlow

£13.5/month
  • Starter Monthly$13.5/month
    • 10 invoices
    • up to 25 bank transactions
    • single user access
  • Business Monthly$27.5/month
    • unlimited invoices
    • unlimited bank transactions
    • multi-user access
  • Starter Annual$162/year
    • 10 invoices
    • up to 25 bank transactions
    • single user access
  • Business Annual$291.5/year
    • unlimited invoices
    • unlimited bank transactions
    • multi-user access

Which should you pick?

Choose Fiken if

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

Fiken review

Choose IRIS KashFlow if

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

IRIS KashFlow review

Questions people ask

Is Fiken or IRIS KashFlow better?
Neither clearly leads. Fiken starts at 219/month and IRIS KashFlow at £13.5/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fiken or IRIS KashFlow?
Fiken starts at 219/month and IRIS KashFlow at £13.5/month.
Does Fiken or IRIS KashFlow run on more platforms?
Both run on Web, so platform support will not decide this one for you.
What is Fiken best used for?
Fiken is most often used for solo accounting and invoicing for small businesses, multi-user accounting collaboration at no extra cost, invoice management with ehf e-invoice support, bank integration for transaction tracking. Of those, solo accounting and invoicing for small businesses and multi-user accounting collaboration at no extra cost are not what IRIS KashFlow is typically brought in for.

Answered from the vendors’ own pages

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
IRIS KashFlow: What are IRIS KashFlow's core features across all plans?

All IRIS KashFlow plans include unlimited quotes, online VAT submission, mobile app access, 50+ reports, bank feeds, receipt capture, multi-currency support, and payroll for up to 5 employees.

Source
Fiken: Do additional users cost more on Fiken?

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

Source
IRIS KashFlow: Are there promotional discounts for new IRIS KashFlow customers?

Yes, new customers receive a 90% discount for 6 months on both Starter and Business monthly plans.

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
IRIS KashFlow: Can multiple users access IRIS KashFlow on the Starter plan?

No, the Starter plan is limited to single-user access only. Multi-user access requires the Business plan.

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
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