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Accounting · head to head

IRIS KashFlow vs Spendbase

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Spendbase logo

Spendbase

Accounting

SaaS and cloud spend management that charges a share of the savings it finds rather than a licence

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Spendbase 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; Spendbase charging a share of savings gives the vendor an interest in defining savings generously, and the customer cannot verify a counterfactual price it never saw.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

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

Attributes where IRIS KashFlow and Spendbase differ
AttributeIRIS KashFlowSpendbase
Starting price£13.5/monthFree
Pricing modelsubscriptionFree card tier, plus a share of savings on the managed plan
Free tierNoYes

Identical on both: platforms (Web), 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 Spendbase does not also cover.

Only in Spendbase

  • Subscription visibility
  • Discount marketplace
  • Virtual cards
  • Cashback
  • Renewal management
  • Savings-share billing

What people use each for

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

IRIS KashFlow

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

Spendbase

  • A startup with no procurement function that wants renewal dates and subscription owners in one placenot IRIS KashFlow
  • A company with heavy Azure or cloud spend that can use pre-negotiated credit allocationsnot IRIS KashFlow
  • Issuing virtual cards per subscription so a forgotten trial cannot renew silentlynot IRIS KashFlow
  • A finance lead who wants software cost reduction without hiring anyone to do itnot 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

Spendbase

  • Charging a share of savings gives the vendor an interest in defining savings generously, and the customer cannot verify a counterfactual price it never saw.
  • The savings share is reported at around 25 percent but is not published on the pricing page, so the actual commercial terms only appear in a contract.
  • Spendbase is both a banking provider and your software negotiator, so a company using both concentrates operating cash and vendor relationships in one small, young company.
  • Banking is delivered through partners rather than held directly, meaning deposit protection and service continuity depend on those partners rather than on Spendbase.
  • It is scoped for startups and small companies, so organisations needing approval workflows, purchase orders or ERP integration will find it thin against a real procurement platform.

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

Spendbase

Free
  • Digital bankingFree
    • No monthly fee per user
    • Up to 100 virtual cards
    • EUR and GBP account details
  • Spend management$undefined/year
    • Everything in the free tier
    • Reported share of roughly 25 percent of savings achieved
    • 200 percent return guarantee against a deposit

Which should you pick?

Choose IRIS KashFlow if

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

IRIS KashFlow review

Choose Spendbase if

  • You need subscription visibility.
  • You want to start without paying.
  • You also want discount marketplace.
Spendbase review

Questions people ask

Is IRIS KashFlow or Spendbase better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Spendbase at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Spendbase?
Spendbase has a free tier; the other does not. Paid plans start at £13.5/month for IRIS KashFlow and Free for Spendbase.
Does IRIS KashFlow or Spendbase run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Spendbase for free?
Yes. Spendbase 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 Spendbase is typically brought in for.
What can IRIS KashFlow do that Spendbase cannot?
Spendbase covers Subscription visibility, Discount marketplace, Virtual cards, Cashback.

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
Spendbase: Is Spendbase free?

The card and banking tier is genuinely free with no per-user fee. The spend management service is paid from a share of the savings it finds, reported at around 25 percent.

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
Spendbase: How is a saving calculated?

The methodology is not published. Agree the baseline, the measurement period and what counts as a saving in writing before signing.

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
Spendbase: Does Spendbase hold my money?

Banking is provided through regulated partners including Moorwand in the UK and EEA and Sutton Bank in the US, with Mastercard issuing the cards.

Spendbase: Is it suitable for an enterprise?

No. There are no purchase orders, approval hierarchies or ERP integration; it is built for startups.

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