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infographic · chapter · numbers · drafted

Below about £5, the fixed fee is the price

For ch. 19, Price it, then give it away · proposal card-fee-arithmetic in the plan

Four tiles. On a £20 payment the card fee is 2.5%. On £5 it is 5.5%. On 50p it is 41.5%. On 10p the fee is more than the payment. Below: payments of pence only work aggregated.
Four tiles. On a £20 payment the card fee is 2.5%. On £5 it is 5.5%. On 50p it is 41.5%. On 10p the fee is more than the payment. Below: payments of pence only work aggregated.

The SVG The data Review it in the plan

What it is for

Readers valued this arithmetic; drawn, any founder pricing in pence can see in a second where the model stops existing.

How it is made

Drawn by admin/build/infographic_svg.py from admin/content/infographics/drawn/card-fee-arithmetic.json, as a numbers. Change the data and rebuild; the picture follows. It keeps the book's colours in every theme of this site, because it is a printed picture: the same file goes into the PDF.

Notes

Fees check: £20 gives 50p (2.5%), £5 gives 27.5p (5.5%), 50p gives 20.75p (41.5%), 10p gives 20.15p. Stripe's rate is the published UK standard rate in 2026; recheck before printing and date it on the graphic.

Checked against the source

Every line below is on the drawing or behind it, and the build found each one word for word in v2/content/6-start-the-company/19__price-it-then-give-it-away.md. A line changed in the chapter and not here stops the release.

  • “Stripe's standard UK card rate is 1.5% plus 20p.” ✓
  • “On a £20 payment that is 2.5%. On £5 it is 5.5%. On 50p it is 41.5%, and on 10p the fee is more than the payment.” ✓
  • “Below about £5, the fixed fee is the price.” ✓
  • “So payments of pence only work aggregated: one charge a year that covers many things, or a platform that already holds a balance and settles in bulk.” ✓