Growing 37.1 per cent while losing 5 scores 32.1. Below the bar, and exactly the conversation the board should be having

Rule of 40 Calculator

Growth rate plus profit margin against the forty bar, on an EBITDA or free cash flow basis, so the board argues about the trade-off, not the arithmetic.

Free tool

Rule of 40 Calculator

Growth plus profitability, the trade-off in one number, with which margin you used stated on the answer.

£
£
%
EBITDA or free cash flow margin, negative if investing. Say which when you quote the score.

Reading the score honestly

The rule: growth rate plus profit margin should clear 40. It exists to stop growth-at-any-cost and profitable-but-dying being argued past each other; one number prices the trade.

State the margin basis. EBITDA and free cash flow can differ by the whole score for an annual-billed company, because deferred income makes cash arrive before revenue.

The demo scores 32.1: 37.1 per cent growth minus a 5 per cent EBITDA investment. Under 40 with strong retention and short payback is a company choosing growth, not failing at it. The score starts the conversation, it does not finish it.

Take the workbook

The score in Excel with growth computed from your own ARR pair and both margin bases side by side.

Download the workbook Excel, no signup

FAQs

Can’t find the answer you’re looking for? Please chat to our friendly team.

We provide bookkeeping, VAT returns, payroll, tax filings, annual accounts, and advisory services — tailored to freelancers, SMEs, and ecommerce businesses.

Yes. Every client works with a named accountant who knows your business inside out. You’ll never deal with call centres — just direct, personal support.

We’re certified partners with Xero and QuickBooks. Our digital-first approach means you’ll always have real-time access to your financial data.

We offer fixed monthly packages with no hidden fees. Pricing depends on your business size and the level of support you need — but you’ll always know exactly what you’re paying for.

Absolutely. We handle VAT, corporation tax, self-assessments, and payroll tax. We also manage HMRC correspondence on your behalf to ensure you never miss a deadline.

No. While many of our clients are London-based, we also support businesses across the UK and ecommerce sellers worldwide through our cloud-based systems.

RESOURCES

Fresh takes on business and accounting.

CONTACT

Get in touch