Skip to content

Instantly share code, notes, and snippets.

@NPCollaborator
Created February 28, 2025 06:12
Show Gist options
  • Save NPCollaborator/cdf5f88a534cce884052134cd6198b1f to your computer and use it in GitHub Desktop.
Save NPCollaborator/cdf5f88a534cce884052134cd6198b1f to your computer and use it in GitHub Desktop.
Segment Concentration Risk
Segment Concentration Risk
Nonprofit fundraising is often heavily skewed toward a small number of large donors. Sector-wide data show an extreme Pareto distribution: for example, donors giving over $5,000 represented only about 1.8% of the donor pool but contributed roughly 73% of all donation dollars in early 2023​ nonprofitpro.com
. Conversely, micro donors (<$100) and small donors ($101–$500) made up over 88% of donors but only around 10% of total contributions​
nonprofitpro.com
nonprofitpro.com
. This imbalance means many organizations are highly reliant on mid-level and major donors, raising concerns about financial stability if those donors reduce or cease giving. Recent trends have exacerbated this risk: overall donor counts have been declining (especially among small donors), even as total dollars have risen due to big gifts. In 2022, the number of donors dropped over 7%, driven largely by steep declines in small donors, while total fundraising dollars increased ~6%, buoyed by major gifts​
nonprofitpro.com
. In short, fewer donors are carrying more of the fundraising load – a classic donor concentration risk. If a nonprofit “puts all its eggs” in the major-donor basket, the loss of even one top donor can cause a huge revenue shortfall​
virtuous.org
. In fact, ratings analysts and regulators encourage nonprofits to disclose when a few donors account for a large portion of revenue, similar to disclosing concentration of investments, because it represents a material risk​
tax.thomsonreuters.com
.
Failing to continuously acquire and cultivate small donors can undermine long-term sustainability. Many major donors begin as modest donors – they may give for several years at lower levels before growing into larger contributors​
bloomerang.co
. Thus, a shrinking base of new small donors today means a weaker major donor pipeline for tomorrow. The Fundraising Effectiveness Project has documented significant drops in new donor acquisition (down ~20% year-over-year in early 2023) alongside declines in newly retained donors​
afpglobal.org
. This creates a “troubling paradigm” of heightened reliance on a shrinking pool of loyal, long-term donors​
afpglobal.org
. As GivingTuesday’s Chief Data Officer cautioned, “The sector’s over-reliance on large donors has hit a critical stage…Swift adoption of diversified fundraising strategies and broad engagement of grassroots givers can help ensure sector stability…while creating a stronger base for future cultivation.”​
afpglobal.org
Major donors themselves are not immune to external factors – they often pull back giving during economic instability or down markets​
nonprofitpro.com
. If an organization has neglected acquiring and stewarding a broad base of supporters, it may find itself highly vulnerable when a few big gifts don’t materialize.
Donor retention patterns further underscore the importance of a balanced donor portfolio. Smaller donors tend to have very low retention rates (often only ~18–22% of first-time donors give again the next year​
bonterratech.com
afpglobal.org
), whereas larger donors are likelier to stick around (recent benchmarks show annual retention around 51% for “major” donors ($5K–$50K) vs. only ~21% for micro-donors​
afpglobal.org
). While major donor loyalty is higher, it’s still only about a coin flip year-to-year, which can translate to big swings in revenue if a few top donors lapse. The key is to diversify the donor base so no single segment’s decline puts the organization at risk. Nonprofits that strike a healthy balance – sustaining a broad base of small donors and a cadre of mid-level and major donors – are more resilient against revenue volatility​
virtuous.org
virtuous.org
. On the other hand, organizations overly dependent on a handful of major funders often struggle to plan and budget effectively, and those with solely lots of small donors may miss out on the transformative impact of bigger gifts​
virtuous.org
virtuous.org
. In practice, diversifying your donor mix is critical for long-term financial sustainability. As AFP’s CEO Mike Geiger notes, fundraisers must adapt strategies “to encourage broader engagement with donors at all levels… building a more diverse and inclusive donor base” for future success​
afpglobal.org
.
Giving Tiers and Donor Segmentation
Nonprofits commonly segment their donors into tiers by gift size – for instance: small or “annual” donors, mid-level donors, major donors, and sometimes principal or transformational donors at the very top. The exact dollar ranges for these tiers vary widely depending on an organization’s size and fundraising context. Industry surveys show no single standard definition of a “major gift.” In one study of 700 nonprofits, about 44% of organizations defined a major gift as above $1,000, while 36% defined it as above $10,000​
bloomerang.co
. This reflects how a mid-sized charity with a $500K budget might consider a $5,000 donation to be major, whereas a large university might reserve the “major donor” label for gifts over $100K or more. Some organizations further distinguish “principal” or transformational gifts at levels so high that they can be truly game-changing – often seven-figure or eight-figure donations that significantly expand programs or endow the future. In practice, each nonprofit sets tier thresholds appropriate to its own donor base and revenue goals. The key is that tiers should stratify donors into meaningful groups for strategy and stewardship (e.g. a “mid-level” segment that gets more personal touch than small donors, but is managed differently than the top 1% of donors).
For benchmarking purposes, reports like the Fundraising Effectiveness Project (FEP) often use standard dollar brackets to categorize giving tiers. Below is an example of tiered donor segmentation (by annual giving amount) and the share of donors and revenue each tier represents sector-wide:
Donor Tier (Annual Gift)
% of Donors
% of Total Giving (sector)
Micro Donors (< $100)
Part of ~88% †
Part of ~10% †
Small Donors ($101 – $500)
Part of ~88% †
Part of ~10% †
Mid-Level Donors ($500 – $5,000)
~10%​
nonprofitpro.com
~17%​
nonprofitpro.com
nonprofitpro.com
Major Donors ($5,001 – $50,000)
~1.6%​
nonprofitpro.com
~26%​
nonprofitpro.com
Supersize/Transformational (>$50K)
~0.2%​
nonprofitpro.com
~47%​
nonprofitpro.com
<small>​
nonprofitpro.com
nonprofitpro.com
†Combined micro and small donors make up >88% of donors but only ~10% of dollars.</small>
This segmentation illustrates how top-heavy fundraising results can be – the top 1.8% of donors (those giving $5K+) contributed roughly 73% of all donation dollars, whereas the vast majority of donors (over 88%) giving less than $500 combined for just a tenth of the revenue. Many nonprofits use similar tiered models in their annual reports or donor databases (even if the exact cut-offs differ) to analyze giving patterns. For example, a nonprofit might label donors as Bronze (<$100), Silver ($100–$999), Gold ($1,000–$9,999), Platinum ($10,000+), etc., to track how many donors and how much revenue comes from each level. Such tiered reporting is useful for benchmarking and strategy: it can reveal, say, an over-reliance on a few Platinum donors, or an opportunity to cultivate more Silver-level supporters into Gold.
Notably, mid-level donors are a crucial but sometimes overlooked segment. They often form the bridge between broad-base giving and major gifts. In the data above, mid-level donors (roughly $500–$5K) accounted for about 10% of donors and 17% of revenue​
nonprofitpro.com
nonprofitpro.com
. Many organizations find that with targeted attention, mid-level donors can be encouraged to “step up” their giving. For instance, Planned Parenthood’s national mid-level program (the President’s Circle) treats donors giving in the four- to five-figure range as a special community, with dedicated stewardship and upgrade asks, explicitly to create a pipeline into the major gifts program for those who might someday give $25K+​
nonprofitpro.com
. The essence of tiered segmentation is to meet donors where they are: small donors get efficient, broad-base cultivation (e.g. mass emails, social media outreach); mid-level donors might receive personal calls, special newsletters or invitations; major donors get one-to-one relationship management; and potential transformational donors (e.g. a prospect capable of a six or seven-figure gift) may involve the CEO or board members in cultivation. Using tiers allows a nonprofit to allocate its fundraising efforts and recognition appropriately across donor levels, and to set giving “asks” that are ambitious yet reasonable for each segment. For example, knowing that your average gift is $250​
thegivingblock.com
, you might structure appeals with suggested ask amounts that correspond to small, mid, and major gift ranges (ensuring you’re not under-asking a donor who could give much more). Tier models like these are prevalent in fundraising strategy because they help organizations diversify their income streams across a spectrum of donor sizes and track progress in each segment.
Major Donor Metrics and Dependency
When assessing donor concentration and major donor performance, nonprofits often look at specific major donor metrics and ratios. Key metrics include:
Donor Dependency Rate – This measures how much of your fundraising comes from top donors. It’s often expressed as the percentage of total gifts or revenue contributed by a select few donors (e.g. your top 5 or 10 donors, or the top 1% by gift size). A classic benchmark is the Pareto Principle (80/20 rule), which in fundraising suggests that roughly 20% of donors contribute 80% of revenue​
thegivingblock.com
. In reality, many nonprofits are even more top-heavy. For instance, one analysis found 88% of funds came from just 12% of donors​
plannedgiving.com
– highlighting intense major-donor dependence. A high dependency rate signals concentration risk: if half your annual budget is tied up in a few major gifts, an unexpected cut from any one of those donors could be devastating. It’s not inherently “bad” to have generous major donors (indeed, it’s a sign of effective major gift work), but organizations should be aware of this ratio and strive not to let it creep too high without corresponding growth in the donor base​
thegivingblock.com
thegivingblock.com
. Calculating this metric is straightforward: rank your donors by contribution and sum the gifts of the top segment (e.g. top 10 or top 20% of donors), then divide by total gifts and multiply by 100​
thegivingblock.com
. The result is the share of income from your biggest donors. For example, if your top 20 donors gave $600K out of a $1M total, your donor dependency would be 60%. Monitoring this over time can reveal whether your revenue is diversifying or becoming more concentrated. Many finance experts recommend disclosing in audits if any single donor accounts for a unusually large share of support, because it indicates vulnerability​
tax.thomsonreuters.com
.
Major Donor (or Top Donor) Dependency Rate – Similar to the above, this is sometimes used to specifically denote the portion of revenue coming only from donors above a certain “major” threshold. For instance, you might calculate what percentage of total fundraising this year came from all donors who gave $5,000 or more. In recent FEP data, donors $5K+ accounted for roughly 73% of all giving​
nonprofitpro.com
, as noted. A smaller nonprofit might find, say, that “gifts of $1K and up make up 50% of our revenue.” This metric helps quantify the degree to which your nonprofit relies on major gifts versus broad-based support. A useful exercise is comparing this to prior years or against targets. If your strategic plan calls for, say, “no more than 50% of revenue from major donors,” and you find it creeping to 60%, that’s a prompt to ramp up efforts in other segments. Major donor dependency has clear impacts on stability – as one report put it, heavy reliance on a few large donations can create instability if those gifts are sporadic or lost​
virtuous.org
. In Q1 2023, when major gifts (>$5K) dropped nearly 10%, it had an outsized effect because those donors represented nearly three-quarters of the funds; their pullback “amplified volatility and uncertainty” for nonprofits that year​
afpglobal.org
afpglobal.org
.
Major Donor Acquisition Rate – This metric tracks your success in gaining new major donors. One way to calculate it is (# of first-time major donors this year ÷ total number of major donors this year) × 100. For example, if you have 50 major donors total in 2024 and 5 of them are new (they never gave at major level before), your major donor acquisition rate is 10%. A higher percentage means you’re feeding fresh prospects into your top donor tier. (Another definition looks at the conversion rate of major gift prospects to actual donors​
thegivingblock.com
– e.g. you identified 20 prospects and 5 made a gift = 25% conversion. Both formulations aim to gauge how well you’re adding new big donors.) In general, acquisition at the major level tends to be challenging and slow – so any positive movement is significant. There aren’t broad “benchmarks” for this rate since it depends on your prospecting effort, but measuring it internally year over year is useful. Why it matters: if your pool of major donors is static or aging, you could be one retirement or one changed mind away from a revenue dip. Bringing new major supporters on board regularly helps stabilize the program. Many nonprofits intentionally set goals for adding a certain number of new major donors each year to keep their pipeline healthy.
Major Donor Retention and Churn – Retention rate is the percentage of last year’s major donors who gave again this year; churn (attrition) rate is the flip side (the percentage who lapsed, i.e. did not give again). Retention is critical for major gifts because each donor represents a substantial amount of revenue and typically significant cultivation effort. A high major donor churn rate can spell trouble – if, say, 4 out of 10 top donors from last year didn’t renew, that lost income might dwarf what you gain from dozens of smaller donors. On the other hand, improving major donor retention has a big payoff: keeping an existing major donor is far more cost-effective than acquiring a new one​
afpglobal.org
afpglobal.org
, and loyal major donors often increase their gifts over time if stewarded well. What are typical retention rates? It varies, but major donors usually have better retention than the overall donor population. For instance, one benchmark found about 51% of prior-year “major” donors were retained year-to-date (vs. under 40% for small donors)​
afpglobal.org
. Some organizations achieve 70%+ retention for their top donors through very personalized stewardship, while others might see much lower retention if their big gifts were tied to one-time campaigns or events. It’s helpful to track major donor churn rate annually: (# of last year’s major donors who lapsed ÷ last year’s total major donors) × 100. This identifies how many high-value supporters you’re losing. If that number is high, it flags a need for improved relationship management or understanding why those donors didn’t continue. For context, overall donor retention across all levels is around 43% annually (and just ~19% for first-time donors) in recent years​
bonterratech.com
. So, a major donor retention of 60%+ might be reasonable, whereas 30% would be alarming. Exit surveys or personal outreach to lapsed major donors can sometimes provide insight (perhaps their financial situation changed, or they felt less engaged), allowing you to adjust strategies.
Major Donor Contribution Growth (Upgrade Rate) – Beyond just retaining major donors, nonprofits look at whether those donors are giving more, less, or the same each year. A donation retention metric (or upgrade rate) focuses on gift value: of the major donors who renewed, what percentage increased their gift size or gave additional gifts? For example, if 10 major donors renewed and 6 of them gave a larger amount than previously, that’s a 60% upgrade incidence. This speaks to donor cultivation quality – ideally, major donors deepen their commitment over time. If many are downgrading or only giving at minimum levels, it may indicate missed opportunities to demonstrate impact or align on bigger initiatives. One hallmark of a robust major gifts program is growth in average major gift size year-over-year, indicating donors are inspired to stretch. Tracking metrics like average major gift size and its growth, or the number of donors who upgraded into a higher tier, can be useful. For instance, if you consider $10K+ a “principal” level at your org, you might count how many donors moved from the $5K range into the $10K+ range this year.
In summary, these metrics help a nonprofit quantify its donor concentration and the performance of its major gifts efforts. A quick self-check might reveal, for example: “80% of our money comes from 15 donors; we added 3 new major donors but lost 2 from last year; about half our major donors increased their giving.” Each of those data points can inform strategy. If dependency is very high, you know diversifying is urgent. If new major donor acquisition is lagging, you might invest more in prospect research or board introductions. If churn is creeping up, it’s a cue to bolster stewardship or explore why top donors are lapsing. The end goal is to maintain strong revenue from major donors while keeping an eye on balance – ensuring that one donor or a tiny cohort doesn’t hold the organization’s fate in their hands. As the Virtuous nonprofit benchmark report notes, many nonprofits see as much as 80% of revenue from major gifts, but “while significant donations are valuable, they can create instability…or a huge loss if that major donor leaves.”​
virtuous.org
Thus, tracking these metrics over time allows you to manage and mitigate that risk proactively.
Strategies to Mitigate Donor Concentration Risk
To strengthen financial resilience, mid-sized nonprofits (and organizations of all sizes) should take intentional steps to broaden and balance their donor base. Here are several actionable strategies, supported by industry best practices, to reduce over-reliance on a few donors and cultivate a more diversified funding stream:
Broaden Donor Acquisition Efforts: Building a pipeline of new donors is critical, especially at the grassroots level. Invest in multi-channel acquisition campaigns aimed at attracting a high volume of small donors to refresh the base. This can include direct mail appeals, online lead generation, social media campaigns, peer-to-peer fundraising, and community events. For example, testing a modest direct mail acquisition or a crowdfunding drive can bring in hundreds of first-time donors. Likewise, events (both in-person and virtual) and peer-to-peer fundraisers (like charity runs or Facebook fundraisers) can tap into donors’ personal networks to reach new supporters​
virtuous.org
. The goal is to continually feed the funnel with fresh donors who can be cultivated upward. While these entry-level gifts may be small, they add up and, importantly, provide future upgrade opportunities. Broadening the base also means reaching diverse audiences – younger donors through online engagement (partnering with influencers, using Instagram/TikTok for awareness)​
virtuous.org
, and community groups that may be underrepresented in your current file​
donorbox.org
donorbox.org
. The more diverse and extensive your donor pool, the less you’ll suffer if one subset (or one big donor) pulls back. Remember that acquiring donors has a cost, so track your acquisition cost per donor and first-year retention, and ensure you are welcoming and thanking new donors promptly to start building the relationship.
Invest in Small Donor Retention and Upgrades: It’s not enough to get new donors – you need to keep them engaged. With first-time donor retention averaging below 20%​
bonterratech.com
, focus on converting those one-time givers into repeat donors through excellent stewardship and communication. Send personalized thank-you messages, show impact stories of what their gift accomplished, and consider a welcome series for new donors. Even simple touches like a thank-you call from a board member for donors who give, say, over $100 can dramatically increase renewal rates. As small donors continue to give, encourage recurring giving (monthly donations) to boost their lifetime value. A strong monthly giving program can turn a $50 one-time donor into a $10 per month sustainer – yielding $120/year and higher loyalty. Over time, identify those consistent small donors who might have capacity to increase their support, and make targeted upgrade asks. For instance, if a donor has given $100 annually for three years, invite them to join a “Circle” at $250 or $500 with special recognition. Many donors simply give at the level asked; by creating tiers (like an “Ambassador Club” for $500+ donors), you provide stepping stones for donors to rise to higher tiers. This lifts the broad base upward gradually, chipping away at the gap between small and major donors.
Build a Mid-Level Donor Program: Mid-level donors (those who give perhaps in the few-hundred to few-thousand dollar range) are the prime candidates to become tomorrow’s major donors. Yet they often don’t get as much attention as either the mass donors or the top donors. Designing a formal mid-level donor program can significantly improve retention and upgrade rates in this segment. This might involve assigning a specific staff member (or enthusiastic board members) to personally steward mid-level donors with periodic check-in calls or handwritten notes. Provide mid-level supporters with enhanced communications, such as an invite-only webinar briefing, a mailed newsletter or impact report, or small tokens of appreciation. The idea is to make them feel like an insider community. For example, a humane society might create a “Guardian Society” for donors giving $500+ annually, offering behind-the-scenes tours of the shelter and special updates on animals helped. Such efforts make mid-tier donors feel valued and more connected to the mission, increasing the likelihood they’ll renew and consider larger gifts. In practice, splitting your mid-level segment into even more targeted cohorts can help tailor approaches. Planned Parenthood, for instance, subdivided its 55,000 mid-level donors by giving behavior (new vs. lapsed vs. long-term, etc.) to send more relevant appeals and successfully upgrade under-performing donors​
nonprofitpro.com
nonprofitpro.com
. By nurturing mid-level donors, nonprofits can both reduce churn in the middle and create a steady flow of candidates ready to be cultivated as major gifts.
Deepen Major Donor Relationships (and reduce one-donor reliance): For the major donors you do have, proactive stewardship is essential to maintain their support and potentially inspire even bigger commitments – but also to ensure you’re not caught off guard by a withdrawal. High-touch stewardship includes regular personalized updates, meetings or calls from leadership, exclusive invitations to see the work first-hand, and sincere recognition of their impact. The more integrated a major donor is with your organization’s “family” (serving on an advisory board, volunteering expertise, involving their family in the cause), the less likely they are to drop off suddenly​
afpglobal.org
afpglobal.org
. This builds donor loyalty and boosts your major donor retention. However, even with great stewardship, life events (or shifting interests) can cause a major donor to stop giving. That’s why it’s crucial to continually identify and cultivate new major donor prospects to broaden the top tier. Encourage your board and existing major donors to help identify peers who might be interested (“friends inviting friends” can open doors to new high-capacity donors). Leverage prospect research tools and wealth screenings to flag mid-level donors or event attendees who have the capacity for major giving​
virtuous.org
. The strategy is twofold: keep your current major donors happy and engaged and steadily add new ones to reduce reliance on any single donor. Some nonprofits set specific policies to avoid over-concentration, such as capping what percentage of the budget can come from one donor, or seeking multi-year pledges from major funders to smooth out year-to-year volatility. If one donor currently gives an outsized portion, it may be wise to have frank conversations about your plans to diversify and even involve them in the solution (they might help fund a new donor acquisition initiative, for example).
Diversify Funding Sources: In addition to individual donor diversification, consider bolstering other revenue streams to mitigate risk. Many mid-sized nonprofits augment individual giving with grants, corporate sponsorships, events, or earned income. If, say, 90% of your funding is coming from individuals (and within that, a handful of donors), pursuing foundation grants or a wider base of smaller corporate gifts could lessen the pressure on those few donors. Similarly, donor events (galas, auctions) and campaigns targeted at specific donor communities (e.g. alumni, local businesses, online followers) can bring in new revenue pockets. The key is a balanced fundraising portfolio – much like an investment portfolio – where a mix of sources ensures stability. When one source dips, another can help fill the gap. For example, during COVID-19 some nonprofits saw event revenue collapse, but those who had strong online small-donor programs or grant support were able to weather it​
donorbox.org
. Aim for a mix that makes sense: perhaps some reliable recurring revenue (memberships, monthly donors), some big plays (major gifts, capital campaigns), some opportunistic income (one-time events or emergency appeals), etc., so that you’re never overexposed to one donor or one mechanism.
Encourage Donor Legacy and Multi-Year Giving: One way to solidify the commitment of both major and mid-level donors is to encourage longer-term pledges or legacy gifts. If appropriate, invite major donors to consider a multi-year pledge (e.g. “Would you be willing to commit $25,000 per year for the next 4 years?”). This not only secures future revenue, but it psychologically turns a one-time donor into a partner for the long haul. Additionally, promoting planned giving (bequests, endowment contributions) can convert a donor’s passion into a lasting legacy for the organization, which ultimately diversifies the types of gifts supporting you. While planned gifts won’t help your immediate annual budget, building an endowment or reserve through bequests can provide a financial cushion that reduces reliance on yearly fundraising highs and lows. Mid-sized nonprofits often overlook this, but even a small endowment or legacy society can over time grow into a significant support mechanism.
In implementing these strategies, use data to guide your efforts. Set up reports to track the distribution of giving by tier each year, your donor retention by segment, and the movement of donors between tiers (upgrading or lapsing). For example, if you see that donors giving $250-$999 have a much lower retention than those at $1,000+, it may indicate the need for a better mid-level touch point. Or if your top 5 donors went from 40% of revenue to 50% of revenue this year, that’s a warning sign to diversify. By measuring and managing these indicators, you can catch dependency risks early.
Crucially, creating a culture of philanthropy and gratitude at all levels will support donor diversification. When every donor – $10 or $10,000 – feels appreciated and understands their impact, retention improves across the board. Small donors who feel connected may introduce friends or increase their giving as their capacity grows. Mid-level donors who see their extra efforts recognized will stick around. Major donors who are treated as true partners will be more likely to maintain (or increase) their support and even tolerate a “bad year” without walking away. As fundraising experts emphasize, balance is key: “A well-balanced giving portfolio maximizes generosity and reduces financial risk…engage all tiers of donors to ensure your organization remains resilient and adaptable.”​
virtuous.org
By expanding the base, cultivating the middle, and stewarding the top, a nonprofit can mitigate donor concentration risk and thrive with a stable, diverse community of supporters.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment