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Course and newsletter income calculator

Estimate planning profit for online courses, paid newsletters, sponsorships, payment plans and refunds.

Your result will appear here

Use this as a planning prompt before speaking to an accountant.

How to use this result

This is a simplified planning tool. It helps you turn niche revenue into accountant-ready figures, but it does not replace tax advice.

Official guidance checked on 30 May 2026

  • GOV.UK Self Assessment checker
  • GOV.UK trading allowance
  • GOV.UK self-employed records
  • GOV.UK VAT registration

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Online course side hustle tax UK: Kajabi, Teachable and Stripe recordsPaid newsletter income tax UK: Substack, Beehiiv and sponsorshipsSpeak to an accountant
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