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Accounting · head to head

IRIS KashFlow vs Tropic

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Tropic logo

Tropic

Accounting

Software procurement combining a workflow platform with human negotiators and price benchmarks

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; Tropic benchmark coverage is concentrated in commonly purchased SaaS, so a company whose spend is dominated by niche, vertical or regionally sold vendors buys intelligence that does not cover its actual contracts.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

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

Attributes where IRIS KashFlow and Tropic differ
AttributeIRIS KashFlowTropic
Starting price£13.5/monthOn request
Pricing modelsubscriptionquote

Identical on both: free tier (No), 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 Tropic does not also cover.

Only in Tropic

  • Contract and renewal repository
  • Price benchmarks
  • Negotiation support
  • Intake and approvals
  • Supplier alerts
  • AI consumption management
  • Redundancy analysis
  • Spend reporting

What people use each for

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

IRIS KashFlow

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

Tropic

  • A finance team facing a large renewal with a vendor that knows the market price better than they donot IRIS KashFlow
  • A company whose AI spend is growing faster than anyone can explain and needs consumption measured against commitmentnot IRIS KashFlow
  • An organisation that keeps paying for two products doing the same job in different departmentsnot IRIS KashFlow
  • A lean procurement function that needs negotiation capacity without hiring specialist negotiatorsnot 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

Tropic

  • Benchmark coverage is concentrated in commonly purchased SaaS, so a company whose spend is dominated by niche, vertical or regionally sold vendors buys intelligence that does not cover its actual contracts.
  • Handing negotiation to a third party can damage a direct supplier relationship that a customer relies on for support and roadmap influence, which is a real cost not captured in a savings figure.
  • Claimed savings are measured against a counterfactual price nobody can verify independently, so the return on the subscription is difficult to audit after the fact.
  • Pricing is quoted and typically scales with spend under management, meaning the fee rises with the very software bill the product is meant to reduce.
  • It is focused on software and AI spend rather than general procurement, so it does not help with services, facilities or physical goods, which for many companies is the larger share of third-party spend.

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

Tropic

On request
  • Tropic$undefined/year
    • Contract repository, intake and renewal management
    • Access to price benchmark intelligence
    • Negotiation support from Tropic staff

Which should you pick?

Choose IRIS KashFlow if

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

IRIS KashFlow review

Choose Tropic if

  • You need contract and renewal repository.
  • You also want price benchmarks.
Tropic review

Questions people ask

Is IRIS KashFlow or Tropic better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Tropic at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Tropic?
IRIS KashFlow starts at £13.5/month and Tropic at On request.
Does IRIS KashFlow or Tropic run on more platforms?
Both run on Web, so platform support will not decide this one for you.
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 Tropic is typically brought in for.
What can IRIS KashFlow do that Tropic cannot?
Tropic covers Contract and renewal repository, Price benchmarks, Negotiation support, Intake and approvals.

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
Tropic: What am I actually buying?

Price intelligence and negotiation capacity, wrapped in a contract and renewal management tool. The benchmark data is the asset; the workflow is table stakes.

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
Tropic: Does it work for niche software?

Less well. Benchmarks are strongest on widely purchased SaaS. Ask for coverage on your top ten suppliers by spend 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
Tropic: Can I verify the savings?

Not independently. Savings are measured against an estimated market price, so treat the figures as directional and negotiate the fee accordingly.

Tropic: Does it cover non-software spend?

No. It is software and AI spend. Services, facilities and goods need a general procurement tool.

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