Most nonprofits don't have a metrics problem. They have a prioritization problem. Tracking 23 KPIs in a spreadsheet doesn't make you data-driven; it makes you tired. This guide flips the usual reference list on its head: start with the 5 metrics every nonprofit should track first, then use the full 23-metric breakdown as a reference when you're ready to go deeper.
Why most nonprofits track the wrong metrics (and what to do instead)
Walk into the average small nonprofit and you'll find a spreadsheet with 20-plus columns no one looks at. The list grows because every conference talk, board meeting, and CRM demo adds another "must-track" KPI. The list stops being useful the moment it stops fitting on one screen.
The frame that actually helps: leading vs. lagging KPIs. Leading KPIs predict future outcomes (donor engagement rate, retention rate, donation growth, recurring sign-ups). Lagging KPIs measure past performance (average gift size, event attendance, fundraising ROI). You need a handful of each, not 20 of either.
According to Zeffy's 2025 Donor Behavior and Giving Trends Research Survey, the nonprofits that grow donor revenue year over year aren't the ones tracking the most metrics. They're the ones tracking the same 4 to 6 metrics every month and acting on what those numbers tell them.
The 5 metrics every nonprofit must track first
If you only track five things, track these. Each one answers a different strategic question, and together they cover acquisition, retention, efficiency, and sustainability.
1. Donor retention rate
Why it matters: retention is the single most predictive metric for sustainable growth. Industry consensus across nonprofit fundraising research suggests retention is significantly cheaper than acquisition, so a one-point gain in retention compounds for years.
Benchmark to compare against: Zeffy's own data puts average nonprofit donor retention in the 40 to 45% range. If you're under 40%, retention is your highest-leverage starting point.
Formula: (Donors who gave both this year and last year / donors who gave last year) x 100.
The data behind this number lives wherever you record gifts. Zeffy's free donor management system tracks giving history by donor automatically, so you can pull the calculation without rebuilding a spreadsheet each year.
2. Average gift size
Why it matters: a rising average gift size with stable donor count means your stewardship is working. A flat or falling average usually means you're acquiring lower-capacity donors and not upgrading them.
Formula: Total donation amount / number of donations.
3. Donor acquisition cost
Why it matters: if you don't know what a new donor costs, you can't tell whether your ads, events, or peer-to-peer campaigns are worth repeating. Calculate per channel, not in aggregate.
Formula: Acquisition spend on a channel / new donors from that channel.
4. Fundraising ROI
Why it matters: ROI is your bluntest efficiency check. A campaign that raises $50,000 for $25,000 spent looks healthier than one that raises $100,000 for $80,000 spent, even though the gross is double.
Formula: Total revenue / total fundraising expenses.
5. Recurring giving rate
Why it matters: recurring donors give predictable revenue and stay longer than one-time donors. The percentage of your donor base on a recurring plan is the closest thing fundraising has to a subscription metric.
Formula: Active recurring donors / total active donors x 100.
To grow this number, the lift is operational. Add a clear monthly option to your donation form and steward the recurring base separately. See how a recurring giving program on Zeffy is set up.
What good looks like: Kids Cancer Care Foundation of Alberta
Kids Cancer Care Foundation of Alberta, a CRA-registered charity based in Calgary supporting families affected by childhood cancer, ran 1,030 Zeffy forms and raised $1.66M fee-free between June 2024 and May 2026. Over that span, they maintained an active monthly-donor program alongside one-time campaigns.
The takeaway for your prioritization: sustained form volume plus a recurring base is the operational shape of a healthy retention strategy. You don't need 23 KPIs to get there. You need to watch retention and recurring-giving rate every month, and use the rest of the list as context.
Donation metrics: measuring what you raise
1. Gifts secured
Total donations received over a chosen time window. Segment by gift type (major, mid-level, small, recurring, planned) to see which categories are growing.
How to measure: sum all gifts received in the period.
Example: 800 donations received in 2026 means gifts secured for the year is 800. See our guide on major donor fundraising for the upper end of this segmentation.
2. Average donation size
The typical donation amount from a donor group, campaign, or period. Trends in this number reveal the health of your stewardship more clearly than total revenue.
How to measure: total donation amount / number of donations.
Example: 90 donations totaling $3,000 = $33.33 average gift.
3. Donation growth rate
Year-over-year change in donation revenue. A useful lagging indicator of overall program health.
How to measure: ((This year's donations - last year's donations) / last year's donations) x 100.
Example: $15,000 this year vs. $10,000 last year = 50% growth rate. Our guide on donor engagement strategies covers the levers that move this number.
4. Donation frequency
How often donors give in a period. Useful for understanding whether your engagement cadence matches donor appetite.
How to measure: total donations / unique donors.
Example: 400 donations from 200 unique donors = 2 gifts per donor per year.
5. Average giving capacity
An estimate of what donors can give based on past behavior and (if available) wealth indicators. Used for major-gift cultivation.
How to measure: sum estimated capacities across donors / number of prospects.
Capacity research is typically a paid-tool category (wealth screening). For most small nonprofits, the more useful proxy is the highest past gift from each donor, which lives in your donor record.
Donor relationship metrics: measuring who gives
6. Donor retention rate
Covered above as a top-5 metric. Quick reference:
How to measure: (donors who gave both periods / donors who gave last period) x 100.
7. Donor growth rate
The percentage increase (or decrease) in your active donor base over a period.
How to measure: ((Current-year donors - prior-year donors) / prior-year donors) x 100.
Example: 200 donors last year, 250 this year = 25% growth.
8. Donor lifetime value (LTV)
The total amount a donor is expected to contribute across their entire relationship with your nonprofit. The clearest signal of which acquisition channels are actually worth the spend.
How to measure: average donor lifetime (in years) x average gift frequency per year x average gift amount.
Recurring donors typically push this number meaningfully higher than one-time donors, which is why the recurring giving rate is a top-5 metric. The data for LTV lives in your donor history, which is exactly what Zeffy's free donor management system stores by default.
9. Conversion rate
The percentage of people who complete a desired action (donating, registering, signing up) out of those who had the opportunity.
How to measure: completed actions / opportunities x 100.
Benchmark from Zeffy's own data: pre-filled donation forms with a 23% average conversion rate on Zeffy, vs. a 15% nonprofit-wide average. If your donation page is converting under 15%, the form itself is usually the lever, not the traffic.
10. Donor acquisition cost
What it costs to bring in a new donor. Calculate per channel.
How to measure: channel spend / new donors from that channel.
Example: $1,000 in social ads producing 50 new donors = $20 per donor. $2,000 in direct mail producing 40 new donors = $50 per donor. See our guide on donor acquisition for channel-by-channel tactics.
11. Donor attrition rate
The percentage of donors who stop giving in a period. The mirror image of retention.
How to measure: lapsed donors / prior-period donors x 100.
Example: 600 donors last year, 100 didn't give this year = 16.6% attrition.
12. Lapsed donor rate
Sometimes called donor churn. Similar to attrition but typically scoped to a longer dormancy window (12 to 24 months).
How to measure: (lapsed donors / total prior-period donors) x 100.
Example: 500 donors total, 100 lapsed = 20% lapsed rate. A high lapsed rate alongside healthy acquisition is a stewardship-and-communication problem, not a marketing problem.
Campaign and event metrics: measuring how you raise
13. Revenue by strategy
Total revenue broken down by channel: events, peer-to-peer, online, direct mail, major gifts, grants. This is the highest-leverage diagnostic for resource allocation.
How to measure: sum revenue per channel for the period, then compare.
14. Fundraising ROI
Revenue raised per dollar spent. A value over 1.0 means profit; under 1.0 means loss.
How to measure: total revenue / total fundraising expenses.
Example: $10,000 raised on $200 in costs = 50:1 ROI. Most channels won't get near that; events in particular run lower because of venue, food, and staff time.
Cross-channel ROI benchmarks vary widely by org size, geography, and methodology, and several commonly cited figures don't hold up under sourcing review. The table below shows what benchmarks are available with credible sourcing; where verified data doesn't exist, the cell notes that.
|
| Online giving | Benchmark unavailable | Varies too widely by org size and form quality for a single figure to be reliable |
| Peer-to-peer fundraising | Benchmark unavailable | Depends heavily on peer network size and coaching investment |
| Events | Benchmark unavailable | Venue, staffing, and catering costs vary too much for a single industry figure |
| Direct mail | Benchmark unavailable | Widely cited ranges have not held up under sourcing review for this article |
| Major gifts | Benchmark unavailable | ROI depends on staff time allocation, which most orgs don't track per-gift |
For your own org, compute ROI per channel and compare year over year. That internal benchmark is more useful than any industry average. One operational note: platform and processing fees show up in the denominator of every channel's ROI. Switching event ticketing to a fee-free event ticketing setup removes one fee variable from the math entirely.
15. Cost per dollar raised (CPDR)
The inverse of ROI: cents spent per dollar raised. Useful when communicating efficiency to boards and grantors.
How to measure: channel expense / channel revenue.
Example: $4,000 spent to run an event that raised $40,000 = $0.10 CPDR.
16. Online gift percentage
The share of total revenue that comes through digital channels. Useful for spotting whether your offline-to-online migration is keeping pace with donor behavior.
How to measure: online donations / total donations x 100.
Example: $4,500 online out of $15,000 total = 30% online gifts.
17. Event follow-up conversion rate
The percentage of event attendees who take a follow-up action (donate, join monthly giving, volunteer). This is the metric that separates an event from an isolated party.
How to measure: attendees who took the action / total attendees x 100.
Example: 60 of 80 trivia-night attendees donated afterward = 75%.
18. Event attendance rate
Attendees vs. invites sent. A diagnostic for promotion, timing, and pricing.
How to measure: attendees / invites x 100.
19. Revenue per attendee
Average contribution per event participant. The clearest measure of whether your event is generating enough per head to justify the cost.
How to measure: total event revenue / attendees.
Example: $20,000 raised at an event with 200 attendees = $100 per attendee.
Digital engagement metrics: measuring your reach
These are supporting metrics, not core fundraising KPIs. They tell you whether your top-of-funnel content is healthy enough to feed acquisition and retention work.
20. Email open rate
The share of recipients who opened a campaign email. Useful for testing subject lines, send times, and list health, but increasingly noisy thanks to privacy-protection features in modern email clients (which pre-fetch images and inflate opens).
How to measure: opens / delivered emails x 100.
Benchmark numbers vary widely by sector and audience; compare against your own prior-period averages rather than chasing an industry figure.
21. Email click-through rate
The share of opens that clicked a link. A cleaner signal of engagement than opens, because clicks aren't inflated by privacy protections.
How to measure: clicks / opens x 100.
Example: 40 clicks on an email opened by 120 people = 33.3% CTR.
22. Website sessions
Unique visits to your site in a period. The cleanest top-of-funnel volume metric.
23. Social media engagement rate
Likes, shares, comments, and clicks across your social channels, expressed as a percentage of reach or followers.
Most native platform analytics include this calculation by default. Use it to spot which content types deserve more of your time.
How to choose the right metrics for your nonprofit
The right starter set depends on where your org is in its lifecycle.
New nonprofits (under 2 years)
You don't have enough historical data for retention or LTV to mean much yet. Focus on:
- Donor acquisition cost per channel. You need to know what works before you scale anything.
- Conversion rate on your donation page. Fix the form before you buy traffic.
- Average gift size, so you can set realistic revenue projections.
Growing nonprofits (2 to 5 years)
You have a donor base. The question is whether you're keeping it. Focus on:
- Donor retention rate. Compare against the 40 to 45% Zeffy benchmark.
- Donor lifetime value. Tells you which acquisition channels are worth doubling down on.
- Recurring giving rate. The single fastest way to stabilize revenue.
Established nonprofits (5+ years)
You have data and channels. The question is efficiency and diversification. Focus on:
- Fundraising ROI by channel.
- Revenue by strategy to spot over-reliance on any single source.
- Lapsed donor rate to catch erosion early.
The simple diagnostic: if you don't know your current donor retention rate, start there. It tells you more about your org's health than any other single number.
How to track these metrics without spreadsheet chaos
Most small nonprofits track metrics by hand in a spreadsheet someone updates once a quarter, when they remember. The errors compound, the formulas break, and by the time the board asks for a number, no one trusts it.
The fix isn't a $300-a-month CRM subscription. The fix is putting your fundraising data in one place that calculates these metrics for you, so the spreadsheet becomes optional.
- Donor retention rate and lapsed donor rate: pulled from giving history stored in Zeffy's free donor management system.
- Donor lifetime value: computed from cumulative giving by donor record.
- Donor acquisition cost by campaign: when you run acquisition through Zeffy forms, the new-donor count is in the dashboard; you supply the spend.
- Online gift percentage: all online giving on Zeffy is captured by default.
- Conversion rate: Zeffy's donation forms surface form-level conversion.
Zeffy serves as the system of record where the numerator and denominator of your KPIs live, fee-free, in one dashboard. For most small nonprofits, that system of record is the missing piece. Custom dashboard builders, predictive churn models, and wealth-screening tools can come later.
Putting your metrics to work: a monthly review checklist
The single highest-leverage habit in fundraising operations is a 30-minute monthly metrics review. Copy the checklist below into a doc, calendar it for the first Monday of every month, and run it.
Monthly metrics review (copy-paste)
MONTHLY FUNDRAISING METRICS REVIEW
Date: __________
Reviewer: __________
This month: ____% Last month: ____%
Action if down: review lapsed-donor list, send re-engagement.
This month: $____ Last month: $____
Action if down: check whether new-donor mix is shifting smaller.
- 1. DONOR ACQUISITION COST (by channel)
Best-performing channel: __________ ($____/donor)
Worst-performing channel: __________ ($____/donor)
Action: shift next month's spend toward the best channel.
- 1. FUNDRAISING ROI (by channel)
Highest-ROI channel: __________ (____:1)
Lowest-ROI channel: __________ (____:1)
Action if any channel under 1:1: review or pause.
This month: ____% Last month: ____%
New monthly donors this month: ____
Action: confirm welcome series for new monthly donors triggered.
NOTES / DECISIONS:
________________________________________
________________________________________
You don't need to act on every metric every month. The point is to notice movement early enough to do something about it. Tracking 5 metrics consistently beats tracking 23 metrics sporadically.
FAQs about nonprofit fundraising metrics
What are the most essential metrics for small nonprofits to focus on?
For smaller nonprofits, these five give you the most insight per minute of effort: donor retention rate (keeping existing donors costs significantly less than acquiring new ones), average gift size (reveals donor capacity and stewardship effectiveness), conversion rate (tells you whether your donation page is doing its job), recurring donation rate (the closest thing fundraising has to predictable revenue), and fundraising ROI (how efficiently each campaign turns spend into revenue).
How often should fundraising metrics be reviewed?
Review your core 5 metrics monthly so you can catch movement early. Run a deeper quarterly review to look at trends across channels, and an annual review to compare year-over-year performance and reset goals. Monthly is the cadence that actually changes behavior; quarterly and annual are for strategy.
How can nonprofits improve their fundraising ROI?
The fastest moves: personalize donor communications, A/B test channels to find what resonates, segment your list so the right donors get the right ask, and invest in stewardship of existing donors before scaling acquisition. Removing platform and processing fees from the cost side by running events and donations on a platform with zero fees also improves ROI mechanically.
What's a good donor retention rate?
Zeffy's data puts the average nonprofit donor retention rate in the 40 to 45% range. If you're at or above that, you're doing well; if you're below, retention is the highest-leverage place to focus. First-year donor retention is typically lower than overall retention, so don't be surprised if new-donor cohorts hold below the average.
How do I calculate donor lifetime value?
The simplest formula: average donor lifetime (in years) x average gift frequency per year x average gift amount. A donor who gives twice a year for 4 years at $50 a gift has an LTV of 4 x 2 x $50 = $400. Recurring donors usually have meaningfully higher LTV than one-time donors because both lifetime and frequency are higher.
Which metrics should I report to my board?
Boards want strategy, not noise. Report these five on a one-page dashboard each quarter: donor retention rate (with prior-year comparison), total revenue by strategy, fundraising ROI overall and per major channel, recurring giving rate and active monthly donors, and one narrative metric tied to mission impact. Everything else stays in the operating team's monthly review.
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