Top 50% Donor Concentration Analysis

Top 50% Donor Concentration

How to use the Top 50% Donor Concentration analysis

This analysis provides a focused view of how much your fundraising revenue is concentrated among your top donors, specifically by examining the cumulative giving of the top 5%, 10%, 15%,...up to 50% of your donor base over the current and prior fiscal years. Drawing on your Gifts data, it calculates each donor's total giving per fiscal year (aligned to your organization's July-to-June fiscal cycle), ranks donors by their giving, and then determines what proportion of your total fundraising comes from each 5% increment. For each segment (for example, the top 10% or 20% of donors), you'll see both dollar amounts and percentage contributions to overall giving, as well as a year-over-year comparison for understanding shifts in donor concentration.

You should use this analysis to identify how reliant your fundraising outcomes are on your highest-contributing supporters and to spot trends in donor concentration over time. By tracking not only current-year but also prior-year-to-date giving for these donor segments, you can see whether donor engagement at the top of your pyramid is increasing or waning, and whether your base is broadening or narrowing. The analysis does not list individual donors, but if you supplement it with additional Constituent Intelligence data, the Top 100 and/or 1000 donor analytics you can do more granular analysis.

You should review this analysis regularly-ideally, monthly or quarterly- as part of your Constituent Intelligence routines. It is especially valuable for development directors, major gifts officers, and anyone responsible for strategic planning. Use the findings to guide conversations in pipeline meetings, inform major donor portfolio assignments, and evaluate the effectiveness of cultivation efforts. To measure success, track changes in the concentration ratio over time and monitor whether targeted strategies are reducing over-reliance on a small group of donors while increasing the contribution from broader segments. This provides a concrete way to assess the resilience and health of your fundraising program.