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Accounting · head to head

Fiken vs Mercury

Fiken logo

Fiken

Accounting

Norwegian accounting software for sole proprietors and small companies

From
219/month
Rated
-
Full reviewWebsite
Mercury logo

Mercury

Accounting

Banking for startups

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Mercury has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fiken bank integration available only as add-on (69 NOK/month); Mercury treasury access requires a $250,000 balance held with Mercury
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fiken and Mercury actually diverge.

Attributes where Fiken and Mercury differ
AttributeFikenMercury
Starting price219/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsWebWeb, Ios, Android
FoundedUnknown2019

Identical on both: 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 Fiken

Nothing recorded that Mercury does not also cover.

Only in Mercury

  • Business checking
  • Savings accounts
  • Virtual cards
  • Team management
  • API access
  • QuickBooks
  • Xero
  • Stripe

What people use each for

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

Fiken

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

Mercury

  • Business banking and payments for startupsnot Fiken
  • Managing treasury, invoicing and corporate cards from one accountnot 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

Mercury

  • Treasury access requires a $250,000 balance held with Mercury
  • Non USD international wires carry a 1% conversion fee
  • Choosing OUR wire coding, which covers intermediary bank charges, costs $15 per wire
  • ACH invoicing is $1 per transaction on Mercury Plus and only free on the $299 a month Pro plan
  • Advanced and recurring invoicing require Mercury Plus at $29.90 a month

Pricing, plan by plan

Fiken

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

Mercury

Free
  • Mercury (Free)Free
    • ACH payments
    • Domestic wires
    • Real-time payments
  • Mercury Plus$29.9/month
    • Invoice ACH debits
    • Recurring invoices
    • Invoicing API (500/month)
  • Mercury Pro$299/month
    • All Plus features
    • Relationship manager
    • Free ACH invoice debits

Which should you pick?

Choose Fiken if

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

Fiken review

Choose Mercury if

  • You need business checking.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want savings accounts.
Mercury review

Questions people ask

Is Fiken or Mercury better?
Neither clearly leads. Fiken starts at 219/month and Mercury at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fiken or Mercury?
Mercury has a free tier; the other does not. Paid plans start at 219/month for Fiken and Free for Mercury.
Does Fiken or Mercury run on more platforms?
Fiken runs on Web. Mercury runs on Web, Ios, Android.
Can I use Mercury for free?
Yes. Mercury has a free tier, so you can try it without paying. Fiken starts at 219/month.
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 Mercury is typically brought in for.
What can Fiken do that Mercury cannot?
Mercury covers Business checking, Savings accounts, Virtual cards, Team management.

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
Mercury: Is Mercury business banking free?

Mercury's base banking tier is free and includes ACH payments, domestic wire transfers, real-time payments, Bill Pay, and QuickBooks/Xero automations at no monthly cost.

Source
Fiken: Do additional users cost more on Fiken?

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

Source
Mercury: What does Mercury Plus add beyond the free tier?

Mercury Plus costs $29.90 per month and adds invoice ACH debits, recurring invoice capabilities, invoicing API with 500 calls per month, unlimited 1099 filings, and access to partner benefits.

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
Mercury: Does Mercury charge monthly account fees?

No, Mercury states there are no minimum account balance requirements, overdraft fees, required monthly fees, or account opening fees. The free tier includes essential business banking, with paid tiers available for additional features.

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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