Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Estimated grant to your org
$6,435
Estimated total annual DAF payout
$42,900
Engagement multiplier applied
130%
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How to use this
- 1Enter known or estimated daf balance ($).
- 2Enter assumed annual payout rate (%).
- 3Enter donor engagement level.
- 4Enter your typical share of their annual giving (%).
- 5Read your estimated grant to your org on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Donor-advised funds hold over $250 billion in the US, but unlike private foundations, DAFs have no legal minimum annual payout requirement, so aggregate payout rates vary widely by sponsor even though the national average reported by the National Philanthropic Trust has hovered around 20-25% of assets industrywide in recent years. If you're trying to estimate what a known DAF holder might realistically grant to your organization this year, this calculator applies a payout rate assumption to their fund balance and lets you adjust for whether the donor is an active or passive granter, since research consistently shows a small share of DAF accounts are dormant for years while active accounts pay out much faster than the aggregate average suggests.
Worked example
Using the values the calculator loads with:
Inputs
- Known or estimated DAF balance: 150000 $
- Assumed annual payout rate: 22 %
- Donor engagement level: Active granter (gives most years)
- Your typical share of their annual giving: 15 %
Results
- Estimated grant to your org: $6,435
- Estimated total annual DAF payout: $42,900
- Engagement multiplier applied: 130%
What each field means
Inputs
- Known or estimated DAF balance ($)
- The known or estimated daf balance used in the calculation, measured in $. Starts at 150000 $ so you have a working example on load.
- Assumed annual payout rate (%)
- The assumed annual payout rate used in the calculation, measured in %. Starts at 22 % so you have a working example on load. Accepted range: 0–100 %.
- Donor engagement level
- Pick the option that matches your situation — the maths changes per option. Choices: Active granter (gives most years), Occasional granter, Rarely grants.
- Your typical share of their annual giving (%)
- The your typical share of their annual giving used in the calculation, measured in %. Starts at 15 % so you have a working example on load. Accepted range: 0–100 %.
Results
- Estimated grant to your org
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Estimated total annual DAF payout
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Engagement multiplier applied
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Is there a legal minimum DAF payout requirement?
No. Unlike private foundations, which must distribute roughly 5% of net investment assets annually, DAFs have no federal minimum payout requirement, which is exactly why aggregate payout rates vary so widely between an actively-granting donor and a dormant account sitting untouched for years.
Where do I get a donor's actual DAF balance?
You generally can't, since DAF sponsors don't disclose individual account balances. Estimate based on the size and pattern of past gifts from that fund, wealth screening data, or direct conversation with the donor about their giving capacity and intentions.
Should I ask a DAF donor for a multi-year pledge?
Yes, and it's increasingly common practice. Multi-year DAF pledges help you plan and encourage the donor to actually move money out of the fund rather than let it sit, addressing the sector's broader concern about DAF assets accumulating without reaching working charities.
Can a DAF fulfill a legally binding pledge?
IRS guidance says no, a DAF grant cannot satisfy a donor's pre-existing legally binding personal pledge, since that would provide impermissible personal benefit to the donor. Draft pledge agreements for DAF donors as non-binding statements of intention instead.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Donor-Advised Fund Payout Estimator. Retrieved from https://www.revenuelab.fyi/toolbox/donor-advised-fund-payout
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/donor-advised-fund-payout" target="_blank" rel="noopener">Donor-Advised Fund Payout Estimator — RevenueLab</a> (2026).</p>
Source: [Donor-Advised Fund Payout Estimator — RevenueLab](https://www.revenuelab.fyi/toolbox/donor-advised-fund-payout) (2026).