Donor-Advised Funds: Bunching Deductions to Maximize Tax Savings

$234 Billion Sitting in Donor-Advised Funds Waiting to Be Given

Donor-advised funds held approximately $234 billion in assets at the end of 2022, according to the National Philanthropic Trust — a figure that has roughly tripled in a decade. The explosive growth reflects a straightforward tax reality: since the 2017 Tax Cuts and Jobs Act raised the standard deduction to $14,600 for single filers and $29,200 for married filing jointly in 2024, fewer than 12% of taxpayers itemize their deductions. The bunching strategy, executed through a donor-advised fund, allows donors to capture several years of charitable deductions in a single year, exceed the standard deduction threshold, and then distribute grants to charities over multiple years.

How a Donor-Advised Fund Works

A donor-advised fund is a charitable giving account sponsored by a public charity — typically a financial institution's charitable arm. The donor contributes cash, securities, or other assets, receives an immediate charitable deduction, and then recommends grants to qualifying charities over time. The sponsoring organization legally controls the funds, though in practice it follows donor recommendations unless the recipient is not a qualified 501(c)(3). Funds can be invested in mutual funds or ETFs within the DAF account, allowing assets to grow tax-free before distribution.

• Contributions are irrevocable — once donated to the DAF, assets cannot be returned to the donor
• The deduction is taken in the year of contribution, not the year of grant distribution
• Grant distributions can be made to any IRS-qualified 501(c)(3) at any time, with no required minimum distribution schedule
• Contributions of long-term appreciated stock are deductible at full fair market value, not original cost basis

The Bunching Strategy: Two or More Years in One

A married couple who donates $10,000 per year to charity receives no itemized deduction benefit — the $29,200 standard deduction already exceeds their total itemized expenses. By contributing $30,000 to a DAF in year one (three years of charitable giving combined), their itemized deductions potentially exceed the standard deduction by $800 or more, generating actual tax savings. In years two and three, they take the standard deduction and make grant distributions from the DAF to their preferred charities — maintaining the same giving pattern with substantially better tax efficiency.

Donating Appreciated Securities: The Dual Benefit

Appreciated stock held for more than one year is the ideal DAF contribution. The donor receives a deduction equal to full fair market value and avoids paying capital gains tax on the embedded appreciation. This dual benefit is unavailable when selling the stock and donating the cash proceeds.

Donors can contribute appreciated stock in any public company, mutual funds, ETF shares, private business interests, real estate, and certain other illiquid assets. Private company stock and complex assets require the sponsoring charity's acceptance, valuation documentation, and in some cases an independent appraisal.

AGI Limits on DAF Deductions

Contributions to donor-advised funds are subject to adjusted gross income (AGI) limits. Cash contributions are deductible up to 60% of AGI. Contributions of appreciated long-term capital gain property are deductible up to 30% of AGI. Excess contributions carry forward for up to five years. The 30% AGI limit on stock donations can be a binding constraint for large, one-time donations of concentrated positions.

• A donor with $200,000 AGI donating $100,000 of appreciated stock can deduct $60,000 in year one (30% of AGI) and carry forward $40,000
• Donating a mix of cash and securities allows optimization of the deduction within a single year
• Qualified appreciated stock contributions to operating charities (not DAFs) face the same 30% AGI cap

Major DAF Sponsors Compared

• Fidelity Charitable: No minimum contribution; 0.60% administrative fee (minimum $100/year); accepts stock, mutual funds, cryptocurrency, private equity
• Schwab Charitable: No minimum contribution; 0.60% administrative fee; broad investment menu including Schwab ETFs
• Vanguard Charitable: $25,000 minimum initial contribution; 0.60% administrative fee; emphasis on Vanguard fund options
• National Philanthropic Trust: $10,000 minimum; variable fees; specializes in complex asset donations
• Community foundations: Regional focus; may allow donor recognition; higher minimums but personalized service

This article is for informational purposes only and does not constitute financial or tax advice.