Nonprofit Fundraising Calculators
For development directors, executive directors, and boards. Put real numbers on donor value, retention, monthly giving, events, and email appeals so you can decide where the next dollar of fundraising effort goes. Results update as you type. No email required.
Donor lifetime value
A first gift is the beginning of a relationship, not the whole value. See what a donor is worth over the years they stay with you, and what you can afford to spend to acquire one.
Lifetime value of a donor
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- Revenue per donor in year one
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- Average years as a donor
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- Net lifetime value after fundraising cost
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- Current acquisition cost as % of LTV
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- Max you can spend to acquire a donor
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- LTV if retention rose 10 points
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- Value of that 10-point gain per donor
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Donor retention cost
Most nonprofits lose more than half their donors every year and spend heavily replacing them. See what the leak costs and what a retention program would be worth.
Cost to replace them just to stay flat
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- Donors lost per year
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- Annual giving lost with them
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- Total cost of churn (lost giving + replacement)
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- New donors needed per year to grow 5%
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- Donors saved per year at target retention
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- Giving retained from saved donors (first year)
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- Acquisition spend avoided
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- Net gain from retention program (year one)
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- Lifetime value of the donors saved each year
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Monthly giving conversion
Monthly donors give more over time, cost less to keep, and make revenue predictable. Estimate what converting a slice of your one-time donors would build.
Annual recurring revenue created
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- New monthly donors
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- What those donors gave before, per year
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- Net increase in year-one giving
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- Per-donor value as one-time donor (lifetime)
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- Per-donor value as monthly donor (lifetime)
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- Lifetime value created by the campaign
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- Monthly revenue still active after 3 years
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- Return on campaign cost (lifetime)
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- Months to recover campaign cost
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Fundraising event ROI
Galas and events raise money but also eat staff time. Find the true net, the net per attendee, and how it compares to other ways of raising the same dollars.
True net (after staff time)
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- Ticket revenue
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- Gross event revenue
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- Hard costs
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- Staff time cost
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- Net before staff time
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- Net per attendee
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- Cost to raise a dollar at this event (cents)
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- Future value of new donors acquired (3 yrs)
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- Return on event cost
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- Raising the same net through other channels would cost
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Email appeal calculator
Forecast what an email appeal will raise, see which step in the funnel matters most, and compare against what your list could do at benchmark rates.
Expected revenue from this appeal
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- Gifts from first send
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- Gifts from follow-ups
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- Total gifts
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- Revenue per 1,000 subscribers
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- Cost to raise a dollar (cents)
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- Value of each subscriber per appeal
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- Adding new subscribers is worth (this appeal)
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| If you improved… | To | Added revenue |
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