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Accounting · head to head

IRIS KashFlow vs Lexware

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Lexware logo

Lexware

Accounting

Accounting and invoicing software for German small businesses and freelancers

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Lexware has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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; Lexware 50% discount only applies for first 3 months
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where IRIS KashFlow and Lexware differ
AttributeIRIS KashFlowLexware
Starting price£13.5/monthFree
Free tierNoYes

Identical on both: pricing model (subscription), 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.

IRIS KashFlow

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

Lexware

  • German business accountingnot IRIS KashFlow
  • Invoicing and bookkeepingnot IRIS KashFlow

Where each one falls short

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

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

Lexware

  • 50% discount only applies for first 3 months
  • Regular prices are double the discounted prices after promotion
  • Pricing is in EUR only

Pricing, plan by plan

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

Lexware

Free
  • S$3.95/month
    • Belegerfassung und -archiv (Document capture and archive)
  • M$6.45/month
    • Angebote, (E-) Rechnungen und Mahnungen (Offers, invoices, reminders)
  • L$10.95/month
    • Buchhaltung, EÜR und Umsatzsteuer (Accounting, EÜR, sales tax)
  • XL$16.45/month
    • EU- und Abschlagsrechnungen, API (EU invoices, installment invoices, API)

Which should you pick?

Choose IRIS KashFlow if

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

IRIS KashFlow review

Choose Lexware if

  • You want to start without paying.
Lexware review

Questions people ask

Is IRIS KashFlow or Lexware better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Lexware at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Lexware?
Lexware has a free tier; the other does not. Paid plans start at £13.5/month for IRIS KashFlow and Free for Lexware.
Does IRIS KashFlow or Lexware run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Lexware for free?
Yes. Lexware has a free tier, so you can try it without paying. IRIS KashFlow starts at £13.5/month.
What is IRIS KashFlow best used for?
IRIS KashFlow is most often used for business accounting, invoicing and billing, vat management. Of those, business accounting and invoicing and billing are not what Lexware is typically brought in for.

Answered from the vendors’ own pages

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
Lexware: How much does Lexware cost?

Lexware pricing ranges from €3.95/month (plan S) to €16.45/month (plan XL) at discounted rates. Regular pricing is €7.90 to €32.90/month. All prices include hosting, backups, updates, and support.

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
Lexware: Is there a current promotional offer?

Yes, Lexware offers 50% discount for the first 3 months on all plans, then regular pricing applies. The billing period is monthly and cancellable anytime.

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
Lexware: Does Lexware offer a free trial?

Yes, Lexware offers a 30-day free trial with full XL features plus Lohn & Gehalt (payroll) access included.

Source
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