You sold your business last year. Your income for the year is going to look nothing like a normal year — and neither is your tax bill. If you've ever wondered whether there's a way to give generously to causes you care about and soften a once-in-a-decade tax hit, there is, and it's called a donor-advised fund.
Most small business owners have heard the term in passing — usually attached to a wealthy donor's name on a hospital wing — and assumed it wasn't for them. That's a mistake. A donor-advised fund (DAF) is one of the most accessible charitable planning tools available, and 2026 tax law changes just made the timing of when you use one more important than ever.
What a Donor-Advised Fund Actually Is
Strip away the jargon and a DAF is simple: it's a charitable investment account you open through a sponsoring organization (think Fidelity Charitable, Schwab Charitable, or a local community foundation). You contribute cash, stock, or other assets. You get an immediate tax deduction for the full value of what you contributed. The money then sits in the fund, potentially growing tax-free, until you recommend grants out of it to specific charities — this year, next year, or over the next twenty years.
The key feature is the separation of two decisions that are normally locked together: when you get the tax deduction and when the charity actually receives the money. A DAF lets you decouple them. You can front-load the deduction into a high-income year and then distribute the actual giving at whatever pace feels right.
That flexibility is the entire point, and it's especially useful for business owners, whose income rarely looks like a smooth, predictable salary.
Why This Matters More in 2026 Than It Used To
Charitable tax planning changed meaningfully for 2026 under the One Big Beautiful Bill Act (OBBBA), and the changes cut in two directions that both push toward using a DAF strategically rather than giving reflexively.
A new floor on itemized charitable deductions. Starting in 2026, itemizers can only deduct charitable giving that exceeds 0.5% of their adjusted gross income. If your AGI is $200,000, the first $1,000 you give in a year produces zero tax benefit — it's simply below the floor. Give $1,500 and only $500 of it counts. This floor resets every single year, which means donors who spread modest gifts evenly across many years are quietly losing more of their deduction than before.
A new deduction for non-itemizers, with an important carve-out. For the first time, taxpayers who take the standard deduction can also deduct up to $1,000 (single) or $2,000 (married filing jointly) in cash charitable gifts, without itemizing at all. That's a real win for smaller, steady givers — but it explicitly excludes contributions to donor-advised funds, private foundations, and supporting organizations. If your giving strategy centers on a DAF, this new perk isn't available to you for that portion of your giving.
Put those two changes together and the message is consistent: the tax code now rewards concentrated, deliberate giving in the years you can clear the AGI floor, and penalizes evenly-spread giving that never quite gets past it. That's exactly the problem a DAF is built to solve.
The Bunching Strategy, Explained With Real Numbers
"Bunching" means taking several years of charitable giving and compressing it into a single tax year, so you clear both the new AGI floor and (if you don't already itemize) the standard deduction threshold in that one year.
Here's how it plays out. Suppose you normally give $15,000 a year to causes you care about — a habit you've kept up for years, split across a few organizations. Under the old rules, spreading that out evenly was fine. Under the 2026 rules, if your AGI floor eats the first $1,000–$1,500 of every year's giving, you're losing a meaningful chunk of your deduction annually, year after year.
Instead, contribute $45,000 to a donor-advised fund in a single high-income year — say, the year you sold a piece of the business, closed an unusually large contract, or had a banner year in general. You claim the deduction for the full $45,000 that year (subject to AGI limits, more below), clearing the floor by a wide margin and likely pushing you well past the standard deduction threshold too. Then you recommend $15,000 in grants to your favorite charities in each of the following three years, exactly as you would have anyway — except now the deduction happened once, in the year it did the most good for your return, instead of getting shaved down three separate times.
The charities still get the same money, on the same schedule you'd have given it anyway. The only thing that changed is when you claimed the tax benefit.
Donating Appreciated Stock Instead of Cash
Cash isn't the only thing you can put into a DAF, and for business owners it's frequently not the best choice. If you're holding appreciated securities — stock from an old employer, a public company's shares you've held for years, or equity you received in a stock-for-stock deal — donating those shares directly to a DAF does two things at once:
- You get a deduction for the full fair market value of the stock, not just what you originally paid for it.
- You avoid capital gains tax on the appreciation entirely, because you never sold it — you gave it.
Compare that to the alternative: selling the stock, paying capital gains tax on the profit, and donating what's left. Direct-to-DAF donation of appreciated stock routes around that tax hit completely, and the charity ends up with more money than it would have received from the after-tax cash.
There are limits worth knowing: cash contributions are deductible up to 60% of your AGI in the contribution year, while gifts of appreciated assets are capped at 30% of AGI. Anything above those limits carries forward for up to five additional tax years, so a very large contribution isn't wasted — it just gets spread across your returns going forward.
When a Business Sale Makes the Timing Ideal
The single most common trigger for opening a DAF is a liquidity event: selling the business, a large contract payout, or an unusually profitable year that won't repeat. In the year your income spikes, your marginal tax rate spikes with it — which means a charitable deduction taken in that specific year is worth more to you than the same deduction taken in an ordinary year.
If you know a sale or windfall is coming, the sequence that works best is: contribute to the DAF before the transaction closes if the asset itself has appreciated (so you avoid the capital gains tax on it directly), or immediately after if you're contributing cash from the proceeds. Either way, the contribution lands in the same tax year as the spike in income, offsetting it as much as the AGI limits allow.
This is exactly the kind of one-time, high-stakes tax decision where it's worth sitting down with a CPA before you act — the interaction between the sale structure, your entity type, and the AGI limits above isn't something to eyeball.
Why Clean Books Make This Decision Easier
None of this planning works if you don't actually know, in real time, what your income looks like for the year. Business owners who are still reconstructing their financials in March, guessing at what last year's revenue actually was, are in no position to make a bunching decision before December 31 — and a DAF contribution only helps the tax year it's made in, not retroactively.
This is where keeping your books current all year, not just at tax time, pays off directly. If you can see your year-to-date income and rough tax liability at any point, you can recognize a high-income year while there's still time to act on it — and decide, with real numbers in front of you, whether this is the year to make a large DAF contribution instead of spreading gifts thin across the next three.
Plain-text accounting makes that visibility straightforward because every transaction is a line of text you can query, diff, and total up whenever you want — no waiting on a bookkeeper's monthly close to know where you stand. Beancount.io gives you that kind of always-current ledger with the transparency of version-controlled records, so a decision like "should I bunch three years of giving into this one" is based on your actual numbers, not a guess. Check out the documentation to see how it fits into a small business's existing accounting workflow, or the Fava-powered dashboard for a visual read on your finances at a glance.
The Bottom Line
A donor-advised fund isn't a tool reserved for the ultra-wealthy — it's a timing mechanism, and 2026's new AGI floor makes timing matter more than it used to. If you give consistently, if you're holding appreciated stock, or if you're facing an unusually high-income year, moving your giving into a DAF in the right year — and only in the right year — can mean the difference between a deduction that clears the new floor and one that barely dents it. The charities get the same support either way. The only question is whether you're capturing the tax benefit you're entitled to along the way.