Why the New Tax Law Made Donor Advised Funds More Valuable, Not Less
- J.T. Hardcastle
- Jul 6
- 6 min read
When I first read through the new charitable giving rules for 2026, my gut reaction was the same one I've heard from almost everyone since: this is going to make giving harder. A new floor on deductions, a cap for the highest bracket, a handful of new limits stacked on top of each other. It sounds like the tax code just got less friendly to generous people.
Here's what I have learned since sitting with the actual math: the opposite is true for anyone giving through a donor advised fund. The new rules don't shrink the value of a DAF. They sharpen it. The features that always made a DAF useful — separating the tax event from the giving schedule, and funding gifts with assets instead of cash — are worth more now than they were a year ago, precisely because the rules got trickier for everyone else.
What Actually Changed
I've written before about the full shape of the 2026 tax law, so I'll keep this part brief. Two pieces matter most here. First, itemizers can now only deduct the portion of their giving above 0.5% of adjusted gross income — what I've called the floor, and it resets every single year. Second, for donors in the top 37% bracket, the deduction is capped at 35 cents on the dollar rather than the full 37. There's also a new above-the-line break for non-itemizers, but it specifically excludes contributions into a donor advised fund, so it doesn't touch what we're talking about here.
Read quickly, all three of those sound like bad news. Read carefully, two of them are an argument for using a DAF, not against it.
Put a number on it and the shape becomes clearer. Take a donor in the top bracket with $800,000 of AGI, giving $40,000 a year in cash, directly, to a handful of charities. The floor claims the first $4,000 of that gift before anything counts. Of the remaining $36,000, the cap trims the value of the deduction from 37 cents on the dollar down to 35. Two modest changes, stacked on the same gift, and the effective tax benefit is meaningfully smaller than it would have been a year ago. That's the version of 2026 most direct givers are living in. It's also exactly the version a donor advised fund is built to avoid.
The Floor Rewards the One Thing a DAF Already Does Well
A donor advised fund has always done one job better than any other giving vehicle: it lets you separate when you get the deduction from when the charity gets the money. You can put a large contribution into the fund in a single year, take the full deduction that year, and then grant it out to your causes on whatever steady schedule you'd already been using. The charity's experience never changes. Only the timing of your tax event does.
Before 2026, that separation was a nice convenience. Under the new floor, it becomes the difference between losing money to the tax code every single year or losing it only once. Picture a household giving $20,000 a year, every year, directly. At a $500,000 AGI, the floor claims $2,500 of that annually — money given, but permanently invisible to the deduction. Stretch that out honestly, and it adds up faster than most people expect.
Now take that same generosity and route it through a fund instead. Bunch three years of giving into a single $60,000 contribution, made once every three years. The floor still takes its bite — $2,500 — but only in the year you fund the DAF. Over nine years, a direct annual giver loses $22,500 to the floor. A DAF buncher giving the same total loses $7,500. Same generosity. Same causes. A third of the tax cost, because the fund lets you concentrate the contribution without concentrating the giving.
That's not a workaround the new law accidentally left open. It's the exact mechanism a donor advised fund was built to provide, and the floor just made it considerably more valuable to use.
The Cap Makes Appreciated Assets Worth More, Not Less
The 35% cap for top-bracket donors trims a few cents off every dollar of deduction. On its own, that's a real but modest change. Where it matters more is in how it changes the comparison between giving cash and giving appreciated stock, real estate, or business interests — the assets a donor advised fund is built to accept.
When the deduction on a cash gift is worth a little less than it used to be, the other benefit of donating an appreciated asset — avoiding the capital gains tax you'd owe if you sold it first — becomes a proportionally larger share of the total tax benefit. A donor who was on the fence about the extra paperwork of gifting stock instead of writing a check now has one more reason to make the move. The deduction shrank a little. The capital-gains avoidance didn't shrink at all. Funding your DAF with the asset, rather than the cash equivalent, is worth more relative to the alternative than it was last year.
The Part Most People Miss: Growth While You Wait
There's a third piece of this that rarely gets mentioned, and I think it deserves more attention than it gets. Once money is inside a donor advised fund, it can be invested and grow tax-free while it waits to be granted out. A $60,000 bunched contribution isn't sitting still for the three years between gifts — it has the chance to grow, which means the fund can end up granting out more than the amount that was originally contributed, at no additional cost to the donor.
That advantage existed before 2026. But it matters more now, for a simple reason: when the direct-giving path is quietly taxed a little more each year through the floor, the DAF path — bunch, invest, grant — is one of the few places left where your original generosity can compound instead of erode.
Go back to the $60,000 bunched contribution from earlier. Invested modestly and granted out over the following three years, that fund can easily finish ahead of the amount that went in, simply from ordinary market growth accumulating tax-free inside the account. A direct giver writing three separate $20,000 checks gets no such benefit — each dollar leaves before it has a chance to grow, and each year's gift meets the floor on its own. The DAF donor gets the floor relief and the growth. The gap between the two approaches, in real dollars, is wider than it was a year ago.
The right numbers here depend entirely on your AGI, your bracket, and how you already give. A general example can point you in a direction, but it can't tell you exactly where your own advantage lands.
Want to see what the new rules mean for your actual giving plan? Book a Clarity Call — 30 minutes with a Partner, your real numbers, no pitch.
Where to Start
If this resonates, here's what I'd tell you to do this week.
1. Find your floor. Take 0.5% of your expected AGI. That's the amount your giving has to clear each year before any of it counts toward a deduction.
2. Look at your giving rhythm. If you give a steady amount every year, you're hitting that floor every year. Bunching several years into one DAF contribution clears it once instead of repeatedly, without changing what your charities actually receive.
3. Check what you're funding with. If most of your giving is cash, ask whether appreciated stock or another long-held asset could do the same job while sidestepping capital gains — a benefit that's now worth relatively more against a slightly smaller deduction.
4. Ask what peak-income years are coming. If you know a high-income year is ahead — a bonus, a sale, an unusually good year — that's often the smartest single year to front-load a DAF, since the deduction is worth the most against your highest-taxed income.
None of this requires a complicated structure. It requires treating the new rules as information rather than discouragement.
I understand why the first reaction to this law is "giving just got less rewarding." For most direct givers, that reaction is fair. But for anyone already using — or considering — a donor advised fund, the honest read is closer to the opposite. The rules didn't make generosity less valuable. They made the tools that already separate timing from generosity worth more than they were before.
Every donor's floor, bracket, and asset mix are different, and the version of this plan that fits you rarely matches a general article. The conversations that turn "interesting" into "actually done" happen one set of numbers at a time.
Curious what your DAF is actually worth under the new rules? Let's look at your numbers together.
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