Membership ROI Calculator

Clean slate. Enter your own numbers only. All amounts are monthly unless noted.

Starter Estimator

If you don’t have full details yet, use the basics below. You can move these into the full calculator with one click.

Estimated audience size today (people)

people

New members you can add each month (people)

/mo

Monthly dues per member (USD)

$ USD

Members who donate monthly (%)

Avg donation by donating member (USD)

$ USD

Event revenue per member per month (USD)

$ USD

Monthly sponsorship revenue (USD)

$ USD

Monthly churn (% leaving each month)

One‑time setup cost (USD)

$ USD

Platform/tools per month (USD)

$ USD

Staff per month (USD)

$ USD

Event cost per member per month (USD)

$ USD

Marketing cost per new member (USD)

$ USD

Membership & Growth

Current members (people)

people

New members per month (people)

/mo

Monthly churn (% of members)

Dues per member per month (USD)

$ USD

Giving & Events

Members who donate monthly (%)

Avg donation per donating member (USD)

$ USD

Event revenue per member per month (USD)

$ USD

Sponsorships per month (USD)

$ USD

Costs

One‑time setup cost (USD)

$ USD

Platform/tools per month (USD)

$ USD

Staff per month (USD)

$ USD

Event cost per member per month (USD)

$ USD

Marketing cost per new member (USD)

$ USD

Notes: Monthly churn is the share of members who leave each month. Setup cost is counted in month 1.

Total Revenue (12 months)

—

Total Costs (12 months)

—

Net (12 months)

—

ROI

—

Members over time

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Monthly Net Cashflow

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M1M2M3M4M5M6M7M8M9M10M11M12

12‑Month Breakdown

Payback Month: —

Month	Members (people)	Revenue (USD)	Costs (USD)	Net (USD)	Cumulative (USD)

Community Data Analyst

Insights from your inputs

Enter numbers and calculate to see data insights.

Community Growth Expert

Actionable suggestions

After calculation, you’ll get tailored growth steps here.