Learn how charitable bunching with a Donor-Advised Fund can significantly reduce your 2026 tax bill while maximizing your charitable impact.
A retired engineer walked into my office genuinely frustrated. He'd been giving $12,000 a year to his church and a couple of local nonprofits for as long as he could remember. Good man, generous heart. But every April, his CPA would tell him the same thing: "You're taking the standard deduction again. Your charitable giving isn't saving you a dime in taxes."
That bothered him. Not because he needed a tax break to justify generosity, but because he felt like he was leaving money on the table that could have gone back to those same charities.
I introduced him to a strategy called charitable bunching with a Donor-Advised Fund. One simple shift in timing, not in how much he gave or where it went, turned his tax situation around completely.
Here's the core idea: instead of giving $12,000 every year, you pile two, three, or even four years of donations into a single tax year through a Donor-Advised Fund (more on what that is in a moment). You get a massive deduction in year one, then donate nothing the next year or two and take the standard deduction those years. The charities still get their money on your normal schedule. The IRS gets less of yours.
Let me walk you through how this works in 2026, including a couple of moves that can make it even more powerful.
"What Exactly Is a Donor-Advised Fund?"
Think of a Donor-Advised Fund, or DAF, as a charitable savings account with a superpower. You make a contribution to the DAF, claim your tax deduction immediately in that year, and then direct grants out to your favorite charities on whatever timeline you choose: next month, next year, or five years from now.
The money inside the DAF can be invested and grow tax-free while it sits there. And the sponsoring organization (Fidelity Charitable, Schwab Charitable, Vanguard Charitable, and many community foundations all offer them) handles the administrative work.
According to the Donor Advised Fund Research Collaborative's Annual DAF Report published in April 2026, there are now 3.59 million DAF accounts holding a record $327.87 billion in charitable assets. DAFs have gone from a niche planning tool to a mainstream giving vehicle, and for good reason.
"Why Does the Standard Deduction Make Bunching So Important in 2026?"
This is the heart of the whole strategy, so bear with me for a minute.
When you file your federal taxes, you either take the standard deduction (a flat amount the IRS lets everyone claim, no receipts required) or you itemize (you list out actual deductions like mortgage interest, state and local taxes, and charitable gifts). You only benefit from itemizing when your actual deductions add up to more than the standard deduction.
Here's the problem in 2026: the standard deduction is $32,200 for married couples filing jointly and $16,100 for single filers. Those are historically high numbers. The Tax Cuts and Jobs Act set them there, and the One Big Beautiful Bill Act, signed in 2025, made those levels permanent law. They are not sunsetting. This is the new normal.
On top of that, while the SALT deduction (State and Local Taxes) cap was increased to $40,400 in 2026, many retirees pay much less than that. Let's say you pay a more typical $10,000 in property and state income taxes.
Do the math for a married couple:
- SALT: $10,000
- Mortgage interest: maybe $8,000
- Annual charitable giving: $12,000
-Total itemized deductions: $30,000
That's less than the $32,200 standard deduction. Your generosity generates zero additional tax benefit. That's exactly where my engineer client was stuck.
Now watch what happens when he bunches three years of giving ($36,000) into a single DAF contribution:
- SALT: $10,000
- Mortgage interest: $8,000
- DAF contribution (3 years bundled): $36,000
-Total itemized deductions: $54,000
That's $21,800 above the standard deduction. At a 32% marginal tax rate, that's roughly $7,000 in real tax savings in a single year. Years two and three, he takes the standard deduction. The charities receive their grants from the DAF on the same annual schedule they always did. Nothing changes for them.
"Can I Use Stock Instead of Cash to Fund My DAF?"
Yes, and honestly, this is one of my favorite moves in the whole planning toolkit. I call it the double play.
Let's say you've held a mutual fund or a stock position for years and it's sitting on a big, unrealized gain. If you sell it, you owe capital gains tax on the profit. But if you donate those appreciated shares directly to your DAF, two things happen simultaneously:
1. You avoid paying capital gains tax entirely on the appreciation.
2. You get a full fair-market-value deduction for the current value of the shares, not just what you originally paid.
So instead of writing a $36,000 check to your DAF, you transfer $36,000 worth of stock that you originally bought for $15,000. You sidestep the capital gains tax on that $21,000 gain and you still get the full $36,000 deduction. The DAF sells the shares internally with no tax consequence, and the cash is ready to grant to your charities.
For clients who've built up concentrated positions over the years, this can be a genuinely significant savings. If you're holding appreciated assets and you're going to be charitable anyway, there's almost never a reason to donate cash instead.
"How Does a Roth 401(k) Fit Into This?"
This question comes up a lot for high-income earners, and it's a smart one.
Here's the situation: when you bunch a large charitable contribution into a DAF, you're lowering your taxable income significantly in that year. That's great. But here's a thought, what if you could simultaneously shift more of your future earnings into a completely tax-free bucket while your current tax burden is already being reduced?
That's where a Roth 401(k) comes in. Unlike a traditional 401(k), where contributions are pre-tax and you pay taxes on withdrawals in retirement, a Roth 401(k) is funded with after-tax dollars and grows completely tax-free. And here's what a lot of people don't realize: unlike a Roth IRA, a Roth 401(k) has no income limits. High earners who are phased out of Roth IRA contributions can still make full Roth 401(k) contributions through their employer's plan.
Additionally, under the SECURE 2.0 Act, Roth 401(k) accounts no longer require Required Minimum Distributions (RMDs) during the owner's lifetime. That means you can let the money compound indefinitely without being forced to draw it down.
So the pairing looks like this: in a year where you're doing heavy DAF bunching and your itemized deductions are high, your taxable income is already reduced. That can mean you're in a lower bracket than usual for that year. You fund your DAF, you max your Roth 401(k) contributions, and you're building tax-free retirement wealth while managing your current-year tax exposure at the same time. It's a layered approach, and for the right client, it's a genuinely elegant plan.
"Is This Strategy Actually Working for People?"
The data says yes, and in a big way.
According to the 2026 DAF Fundraising Report published by K2D Strategies and Chariot in June 2026, nonprofits reported a 75% median growth in DAF revenue from 2021 to 2025, compared to just 9% to 12% growth for non-DAF donations over the same period. DAF giving isn't just growing, it's transforming how major donors interact with the organizations they care about.
The same report found that the median DAF gift to nonprofits is 12 times larger than the median non-DAF gift. That tells you something important: people who give through DAFs aren't just being more tax-efficient. They're also giving more, because the structure encourages thoughtful, intentional philanthropy rather than reactive checkbook giving.
I had another client, a physician in her mid-50s, who initially resisted the DAF idea because she thought it sounded complicated. "I just want to write a check to my causes," she told me. We set up her DAF in an afternoon. She's now batching two years of contributions, donating appreciated shares from her brokerage account, and her charities receive their grants like clockwork every December. She told me last year it's the most organized her giving has ever felt.
"How Do I Get Started?"
The mechanics are simpler than most people expect. You open a DAF account (often in under 30 minutes) with a sponsoring organization of your choice. You make your contribution: cash, stock, mutual funds, or other appreciated assets before December 31 to lock in the current-year deduction. Then you recommend grants to your charities at any pace you like.
The planning around how much to contribute, which assets to use, and how to coordinate it with your Roth 401(k) or other retirement accounts, that's where the real value of working with an experienced advisor comes in.
If you've been giving generously for years and quietly wondering whether your taxes actually reflect that generosity, the answer might just be a timing shift away.
If you'd like to run the numbers for your specific situation and see what a bunching strategy could look like in 2026, I'm happy to walk through it with you. Reach out through the contact form below, or at BryonT@WRAnderson.com and let's put your generosity to work twice over.
1.) Generally, a donor advised fund is a separately identified fund or account that is maintained and operated by a section 501(c)(3) organization, which is called a sponsoring organization. Each account is composed of contributions made by individual donors. Once the donor makes the contribution, the organization has legal control over it. However, the donor, or the donor's representative, retains advisory privileges with respect to the distribution of funds and the investment of assets in the account. Donors take a tax deduction for all contributions at the time they are made, even though the money may not be dispersed to a charity until much later. 2.) Cetera Advisors LLC exclusively provides investment products and services through its representatives. Although Cetera does not provide tax or legal advice, or supervise tax, accounting or legal services, Cetera representatives may offer these services through their independent outside business. This information is not intended as tax or legal advice.