Hong Life CalculatorsUnderstanding the paid newsletter revenue calculator — concept and principle
Writers who run a paid newsletter on a subscription platform usually grow a free list first and convert a small share of readers into paying subscribers. This calculator estimates how many paying subscribers a given list produces, the gross monthly recurring revenue (MRR) they pay, and the net MRR left after the platform's share and payment processing.
How it is calculated
- Paying subscribers = free subscribers × conversion rate
- Gross MRR = paying subscribers × monthly price
- Net MRR = gross MRR × (1 − platform fee % − processing fee %)
The free subscriber count is your list size; the conversion rate is the percentage of that list who pay. Both fees are entered as percentages of gross revenue. Any currency works.
The principle
A newsletter's income is a funnel: audience × conversion × price. Each step multiplies the next, so a change in any one moves revenue in proportion. Doubling the conversion rate has the same effect as doubling the list. Fees are then taken as a share of what readers pay, so the net amount is a fixed fraction of gross under this model.
Worked example
- Free subscribers = 8,000, conversion = 5%, price = $8, platform fee = 10%, processing = 3.5%.
- Paying subscribers = 8,000 × 0.05 = 400.
- Gross MRR = 400 × 8 = $3,200.00.
- Fees = 10% + 3.5% = 13.5%, so net MRR = 3,200 × 0.865 = $2,768.00.
How to read the result
Net MRR is the figure to compare with your time and costs; multiply by 12 for a yearly run rate before tax. Conversion rates for paid newsletters vary widely with niche, how exclusive the paid content is and how long readers have been subscribed, so measure your own rate and test the effect of raising it or the price. If the net amount is too small, a larger list, a higher conversion or a higher price are the three levers; this calculator lets you see which one is most realistic.
Common mistakes
- Treating the whole list as active readers; inactive addresses rarely convert.
- Ignoring the fixed per-transaction part of card fees, which weighs more on low prices and is not in this percentage model.
- Counting annual plans at full price per month instead of annual price ÷ 12.
- Forgetting refunds, failed payments, sales tax/VAT and cancellations.
Frequently asked questions
Is a 5% conversion rate realistic?
It is only an example input. Your own rate depends on topic and audience, so start from your real data once you launch paid plans.
Should I offer an annual plan?
Annual plans are often discounted and may reduce churn. Enter their equivalent monthly price (annual price ÷ 12) when using this calculator.
Does net MRR include taxes?
No. It is after platform and processing fees only. Income tax and any sales taxes are separate.
Sources: Kotler and Keller, Marketing Management (customer funnel and conversion)