Adds net subscriptions, completed sponsorships, and confirmed referrals, then subtracts monthly costs.
No platform fee, conversion rate, CPM, sponsor price, referral bounty, or income target is supplied.
Use dashboard, invoice, contract, payout, and billing records from the same reporting period.
Newsletter & Substack Revenue Calculator
Build a monthly scenario from your own subscriber, pricing, fee, completed-work, referral, and cost figures.
Enter one reporting period
Leave any revenue line at zero when it does not apply.
Monthly scenario
Calculation breakdown
How the newsletter scenario works
Every result is traceable to a visible field.
Subscription formula
Paid subscribers are either entered directly or calculated from list size multiplied by your conversion assumption. Gross subscription revenue equals paid subscribers multiplied by monthly price. The platform fee is the gross amount multiplied by the percentage you enter.
Completed-work rule
Sponsorship and referral lines use completed or confirmed counts multiplied by the net amount entered. This avoids turning an unbooked offer, public CPM claim, or unapproved referral into revenue.
Costs and annualization
Other monthly costs are subtracted once. The annual figure simply multiplies the monthly scenario by twelve; it does not model churn, growth, seasonality, taxes, currency conversion, refunds not entered, or changing platform terms.
Records to retain
- The reporting period and paid-subscriber count.
- The billing record or agreement supporting the platform-fee input.
- Completed sponsorship invoices and confirmed referral reports.
- Processing, software, refund, contractor, and operating costs included in the scenario.
Newsletter scenario questions
The calculator deliberately avoids unstable platform tables and public income benchmarks.
Use the paid-subscriber count, subscription price, and fee percentage shown in your current Substack dashboard, agreement, or billing records. This calculator does not auto-fill a Substack fee because plans, payment processing, taxes, and terms can change.
Enter the percentage shown in your current platform agreement or billing records. Plans and terms can change, so this tool does not supply a fee.
Use the direct paid-subscriber count when your dashboard provides it. Use list size and a user-supplied conversion rate only for an explicitly labeled scenario.
Use completed sponsorship placements and confirmed or approved referrals from the same reporting period. Do not include an unsigned offer or an unverified projection.
No. It performs arithmetic on entered values and does not predict growth, conversion, sponsorship demand, referral acceptance, or future platform terms.