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Accounting · head to head

IRIS KashFlow vs Medius Expense

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Medius Expense logo

Medius Expense

Accounting

Expense management, formerly Expensya, now the expense module of the Medius spend platform

From
On request
Rated
-
Full reviewWebsite

The short version

  • 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; Medius Expense the Expensya name is being retired, so contracts, logins and support articles change identity mid-relationship and internal documentation has to be rewritten.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which IRIS KashFlow and Medius Expense actually diverge.

Attributes where IRIS KashFlow and Medius Expense differ
AttributeIRIS KashFlowMedius Expense
Starting price£13.5/monthOn request
Pricing modelsubscriptionquote
PlatformsWebWeb, iOS, Android

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 IRIS KashFlow

Nothing recorded that Medius Expense does not also cover.

Only in Medius Expense

  • Receipt OCR
  • Mileage and per diem
  • VAT recovery
  • Card reconciliation
  • Approval workflows
  • AP suite integration

What people use each for

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

IRIS KashFlow

  • business accountingnot Medius Expense
  • invoicing and billingnot Medius Expense
  • VAT managementnot Medius Expense

Medius Expense

  • A French or Spanish employer needing VAT-compliant receipt capture in local formats and languagesnot IRIS KashFlow
  • A company already running Medius for supplier invoices that wants employee spend on the same platformnot IRIS KashFlow
  • A finance team with heavy mileage claims needing statutory rates applied without spreadsheetsnot IRIS KashFlow
  • A group consolidating several country expense tools into one European platformnot 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

Medius Expense

  • The Expensya name is being retired, so contracts, logins and support articles change identity mid-relationship and internal documentation has to be rewritten.
  • It is now a module inside an accounts payable suite, so expense-specific roadmap items compete with supplier invoice work for engineering time.
  • Pricing is not published and is discounted against bundling with Medius AP, which makes standalone expense quotes less competitive than they look.
  • Strength is concentrated in Europe and the Maghreb; North American and Asian tax and mileage handling are thinner than the European coverage.
  • It does not issue cards, so real-time spend controls are absent and it relies on card feed reconciliation after the fact.

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

Medius Expense

On request
  • Medius Expense$undefined/year
    • Per-user subscription, quoted not published
    • Tiering by feature set and entity count
    • Implementation and OCR configuration fees

Which should you pick?

Choose IRIS KashFlow if

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

IRIS KashFlow review

Choose Medius Expense if

  • You need receipt ocr.
  • You work on Web, iOS, Android.
  • You also want mileage and per diem.
Medius Expense review

Questions people ask

Is IRIS KashFlow or Medius Expense better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Medius Expense at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Medius Expense?
IRIS KashFlow starts at £13.5/month and Medius Expense at On request.
Does IRIS KashFlow or Medius Expense run on more platforms?
IRIS KashFlow runs on Web. Medius Expense runs on Web, iOS, Android.
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 Medius Expense is typically brought in for.
What can IRIS KashFlow do that Medius Expense cannot?
Medius Expense covers Receipt OCR, Mileage and per diem, VAT recovery, Card reconciliation.

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
Medius Expense: Is Expensya still available?

Under that name, no. The product continues as Medius Expense, with the branding cutover on 30 September 2026 and no change to features or data.

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
Medius Expense: Do I have to buy Medius AP as well?

No, but the commercial terms improve materially if you do, which is worth testing during negotiation.

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
Medius Expense: Does it issue corporate cards?

No. It reconciles existing card feeds rather than issuing its own cards.

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