Creator income

Substack Income Calculator

Paid subs depend on conversion and churn, not just list size.

Last updated June 2, 2026

Enter free subscribers, conversion, price, and churn for monthly net.

Example values are shown so you can see how it works. Replace them with your own.

Free subscribersFree list.

Paid conversionFree to paid.

Monthly pricePaid tier.

Monthly churnPaid cancellations.

Platform feeSubstack cut.

Tax reserveA rough set-aside, not a tax calculation.

Estimated net monthly profit

$1,208

Gross monthly revenue$1,579
Total costs and fees- $158
Estimated tax reserve- $213
Net monthly profit$1,208
Profit margin76.5%
Annualized net$14,497

Strong

Probably worth testing

Healthy margin per sale. Focus on consistent volume and keeping fees and returns under control.

Suggested next steps

Re-run with your worst month's costs, not your best.
Track fees and returns separately as volume grows.
Raise price before scaling ad spend.

Estimates only, based on the numbers you enter. Nothing is saved to the page address. Tax figures are rough planning numbers, not filing advice.

Assumptions this calculator makes

Revenue and costs are steady monthly averages.
Tax reserve is a rough set-aside, not tax advice.

This is an estimate, not advice

Every result here is a rough model based only on the numbers you enter. Sidequity is an informational tool and does not provide professional, tax, legal, investment, or financial advice, and it makes no income guarantees. Any tax set-aside is a planning placeholder, not a tax calculation.

For decisions that affect your money, taxes, or business, review your situation with a qualified professional. See our full disclaimer.

How to use it

Use real per-unit costs.
Include ad spend if you run ads.
Check margin before scaling volume.

What this number means

Net monthly is what you can plan around.

Thin margin leaves no room for a bad month.

Common mistakes

Ignoring marketplace fees.
Forgetting ad spend.
Using gross revenue as profit.

Frequently asked questions

Is profit guaranteed?

No. This is an estimate from your inputs.

What tax reserve should I use?

A rough planning set-aside, often 20 to 30 percent of profit. Confirm with a tax professional.

Why are margins thin?

Fees, ads, returns, and unit costs stack on every sale.

How do I improve margin?

Raise price, cut input cost, or reduce fees and ad spend.

Substack Income Calculator last updated June 2, 2026. Back to all calculators.