Substack Break-Even Calculator
Enter your monthly expenses and subscription price to see how many paid subscribers you need to break even - plus a few safety-margin targets. Free, no signup.
Find your break-even point
Before Substack's payment processing fees. Targeting a buffer above the exact break-even point covers subscriber churn and expense creep, not just today's costs.
Why a buffer above break-even matters
The exact break-even number is simply your monthly expenses divided by your subscription price, rounded up to a whole subscriber. But that number assumes zero churn and zero expense creep going forward - in practice, some paid subscribers cancel every month, and costs rarely stay perfectly flat.
That's why this tool also shows targets with a 10%, 25%, and 50% buffer built in. Planning toward a buffered target instead of the bare minimum gives you room to absorb normal subscriber churn without dropping back below break-even every time someone cancels.
Questions
How many paid subscribers do I need to break even on Substack?
Divide your monthly expenses by your subscription price and round up - that's the exact break-even point shown by this calculator, before accounting for subscriber churn.
Why does the calculator suggest targeting more than break-even?
The exact break-even number assumes zero subscriber churn and flat expenses forever, which isn't realistic. A 10-50% buffer gives room to absorb normal cancellations without dropping below your costs.
Does this include Substack's payment processing fees?
No - like the other calculators here, this is before payment processing fees, which reduce the revenue that actually reaches you. Build a little extra margin in for that too.
How do I track progress toward my break-even target?
NotesIQ tracks your actual paid subscriber count over time automatically, so you can watch real progress toward this number instead of checking manually.