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Accounting · head to head

IRIS KashFlow vs Orb

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Orb logo

Orb

Accounting

Revenue design platform automating usage-based billing and pricing strategy

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; Orb custom pricing model requires sales consultation, no transparent public pricing
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where IRIS KashFlow and Orb differ
AttributeIRIS KashFlowOrb
Starting price£13.5/monthOn request
Pricing modelsubscriptionCustom pricing based on billing volume and events
PlatformsWebWeb, API

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 Orb does not also cover.

Only in Orb

  • Usage metering
  • Automated billing
  • Pricing modeling
  • Revenue recognition
  • Spend controls
  • Pricing calculator
  • NetSuite integration
  • Data warehouse sync

What people use each for

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

IRIS KashFlow

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

Orb

  • Implementing usage-based billing for cloud infrastructure providersnot IRIS KashFlow
  • Modeling and testing multiple pricing strategies before launchnot IRIS KashFlow
  • Automating revenue recognition for financial reportingnot IRIS KashFlow
  • Managing complex hybrid pricing (seats plus usage) at scalenot IRIS KashFlow
  • Providing customers real-time spend controls and usage visibilitynot 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

Orb

  • Custom pricing model requires sales consultation, no transparent public pricing
  • Pricing based on both events and billing volume adds complexity to cost estimation
  • Enterprise-focused positioning may be overkill for simple subscription use cases
  • Requires integration with existing accounting systems for full value
  • Limited information on free tier or trial availability

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

Orb

On request
  • Core$undefined/custom
    • Real-time event ingestion (up to 250K+ events/second)
    • Real-time alerting
    • Hybrid and usage-based billing
  • Advanced$undefined/custom
    • All Core features
    • Data warehouse sync
    • Salesforce integration
  • Enterprise$undefined/custom
    • All Advanced features
    • Enterprise-grade SLAs
    • Dedicated support

Which should you pick?

Choose IRIS KashFlow if

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

IRIS KashFlow review

Choose Orb if

  • You need usage metering.
  • You work on Web, API.
  • You also want automated billing.
Orb review

Questions people ask

Is IRIS KashFlow or Orb better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Orb at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Orb?
IRIS KashFlow starts at £13.5/month and Orb at On request.
Does IRIS KashFlow or Orb run on more platforms?
IRIS KashFlow runs on Web. Orb runs on Web, API.
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 Orb is typically brought in for.
What can IRIS KashFlow do that Orb cannot?
Orb covers Usage metering, Automated billing, Pricing modeling, Revenue recognition.

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
Orb: How does Orb pricing work?

Orb uses custom pricing based on your billing volume (total value of invoices) and events (raw data records ingested). Specific costs must be discussed with their sales team.

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
Orb: What is the difference between Core, Advanced, and Enterprise plans?

Core includes event ingestion and basic billing automation. Advanced adds data warehouse sync and Salesforce/NetSuite integrations. Enterprise adds SLAs, dedicated support, and mission-critical guarantees.

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
Orb: Can Orb handle hybrid pricing models?

Yes. Orb supports hybrid pricing combining seat-based, usage-based, and flat-rate components, making it suitable for complex monetization strategies.

Source
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