Newsletter Monetization Calculator

Calculate revenue from sponsorships and paid subscriptions

Substack · Beehiiv · ConvertKit

Audience & Revenue Streams

Currency:
Total Subscribers
Average Open Rate
Industry avg: 20-45%
Sponsorship CPM
Per 1,000 opens per sponsorship slot
Paid Conversion Rate
% of subscribers on paid tier
Monthly Paid Price
Platform Fee
Substack/Beehiiv ~10% of paid subs
Self‑Employment Tax
Rate (%)
Social Security + Medicare for self-employed creators
Income Tax
Rate (%)
Applied after self‑employment tax
Monthly Sponsorship
$0.00
Based on opens × CPM
Monthly Paid Revenue
$0.00
After platform fee
Yearly Profit
$0.00
Before tax
Assumptions: Sponsorship calculated as (Subscribers × Open Rate / 1000) × CPM per sponsorship slot (assumes 1 slot per issue, 1 issue per week). Paid revenue = Subscribers × Paid% × Price × (1 − Platform Fee). Affiliate and ad network revenue not included.
Monthly Breakdown
Gross sponsorship revenue
—
Gross paid subscription revenue
—
Platform fee
—
Net monthly profit
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