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Accounting · head to head

IRIS KashFlow vs Lemon Squeezy

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Lemon Squeezy logo

Lemon Squeezy

Accounting

Merchant of record for digital products, so the platform is the legal seller and carries the sales tax registrations

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; Lemon Squeezy the fee is a percentage of revenue and sits well above a direct card gateway's rate, so a business that grows past the point where it could afford its own tax filings is paying an escalating charge for a service whose cost to the provider does not scale the same way.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which IRIS KashFlow and Lemon Squeezy actually diverge.

Attributes where IRIS KashFlow and Lemon Squeezy differ
AttributeIRIS KashFlowLemon Squeezy
Starting price£13.5/monthOn request
Pricing modelsubscriptiontransaction

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 Lemon Squeezy does not also cover.

Only in Lemon Squeezy

  • Merchant of record
  • Global tax handling
  • Hosted checkout
  • Subscriptions
  • Licence keys
  • Digital file delivery
  • Affiliate programme
  • Discount codes

What people use each for

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

IRIS KashFlow

  • business accountingnot Lemon Squeezy
  • invoicing and billingnot Lemon Squeezy
  • VAT managementnot Lemon Squeezy

Lemon Squeezy

  • A solo developer selling a desktop app to buyers in dozens of countries who cannot justify VAT registration and quarterly filings in the EU and the UKnot IRIS KashFlow
  • A small SaaS product whose founders want to launch paid plans this month rather than wait on a tax adviser and a sales tax nexus studynot IRIS KashFlow
  • A studio selling templates, plugins or courses as one off downloads that need licence keys and file delivery alongside the paymentnot IRIS KashFlow
  • An existing product moving off a gateway because US state digital goods thresholds have started to trip and nobody wants to file in twenty statesnot 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

Lemon Squeezy

  • The fee is a percentage of revenue and sits well above a direct card gateway's rate, so a business that grows past the point where it could afford its own tax filings is paying an escalating charge for a service whose cost to the provider does not scale the same way.
  • Because Lemon Squeezy is the merchant of record, its name appears on the card statement and the invoice, which causes support tickets from buyers who do not recognise the charge and creates friction with corporate purchasers whose finance team wants to see the supplier they signed with.
  • It is a billing platform rather than accounting software, so you still need a ledger, and the mapping from gross sales to net payout across tax withheld, platform fees, refunds and the payout timing gap is a reconciliation your bookkeeper has to build and maintain every month.
  • Payout destinations are limited by country and are made on a schedule rather than on demand, so a business in a market outside the supported list, or one that needs funds the same week, has a working capital problem the platform will not solve.
  • Onboarding is subject to acceptance and the platform restricts what may be sold, so a product that drifts into a restricted category, or a merchant flagged during review, can find sales stopped with the platform holding the balance and limited recourse.

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

Lemon Squeezy

On request

No published plan breakdown. See the Lemon Squeezy review.

Which should you pick?

Choose IRIS KashFlow if

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

IRIS KashFlow review

Choose Lemon Squeezy if

  • You need merchant of record.
  • You also want global tax handling.
Lemon Squeezy review

Questions people ask

Is IRIS KashFlow or Lemon Squeezy better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Lemon Squeezy at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Lemon Squeezy?
IRIS KashFlow starts at £13.5/month and Lemon Squeezy at On request.
Does IRIS KashFlow or Lemon Squeezy 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 Lemon Squeezy is typically brought in for.
What can IRIS KashFlow do that Lemon Squeezy cannot?
Lemon Squeezy covers Merchant of record, Global tax handling, Hosted checkout, Subscriptions.

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
Lemon Squeezy: Does using Lemon Squeezy mean I never have to register for VAT?

It means you do not have to register in the buyer's country for those digital sales, because Lemon Squeezy is the seller there. You still have your own home country obligations on the income you receive, and your accountant treats the payouts as your revenue less a cost of sale.

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
Lemon Squeezy: How is this different from using Stripe directly?

Stripe is a payment processor, so you remain the seller and the tax obligations are yours. Stripe Tax will calculate rates but does not register or file for you. Lemon Squeezy takes the seller position and the filings, which is why it costs more.

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
Lemon Squeezy: Stripe acquired Lemon Squeezy. Does the product still exist?

Yes, it continued to operate as a distinct product after the 2024 acquisition. As with any acquired product, treat long term roadmap commitments cautiously and keep your customer and subscription data exportable.

Lemon Squeezy: Can I sell physical goods through it?

No. It is built for digital products, software, subscriptions and downloads. Physical fulfilment and the different tax treatment that comes with it are out of scope.

Lemon Squeezy: What happens to my subscriptions if I want to leave?

Card details are held by the merchant of record, not by you, so moving subscribers to another platform generally means asking existing customers to re-enter payment details rather than migrating tokens. Plan for churn at the switch.

Lemon Squeezy: Will my accountant be able to work with the reports?

The payout statements break out gross, tax, fees and refunds, which is enough for a competent bookkeeper. There is no direct posting into a general ledger, so expect a manual or scripted journal each month.

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