Many new charitable tax rules are scheduled to begin on January 1, 2026, under the recently enacted federal tax law known as the One Big Beautiful Bill. That makes the remainder of 2025 a key “Giving Window” to plan gifts, consider bunching strategies, and review how you use a donor‑advised fund (DAF) so your giving stays tax‑smart now and after the rules change.
If you are weighing a larger gift, funding or adding to a DAF, or timing grants across years, now is the time to map out your approach with your advisor and our Giving Team.
“Bunching” Charitable Contributions
Bunching means concentrating two or more years of charitable gifts into a single tax year so that your total itemized deductions exceed the standard deduction that year. In the following year(s), you take the standard deduction again. The giving stays consistent over time, but the timing of the tax deduction changes in your favor.
An Example
The strategy is best illustrated with a simplified example (note: the example does not factor in inflation, so consult with your financial advisor when planning for your specific needs).
A couple typically gives $6,000 each year and also pays mortgage interest, state and local taxes (SALT), and other deductible expenses, totaling $25,500 in a typical year. In 2025, the married‑filing‑jointly standard deduction is $30,000, so itemizing $25,500 would not beat the standard deduction.
If the couple instead “bunches” two years of donations – $12,000 – in 2025 to a donor-advised fund (DAF), their total itemized deductions rise to $37,500. They itemize in 2025 and claim a larger deduction that year. In 2026, they take the standard deduction again, but still make grants to nonprofits from their DAF to maintain steady support.
A donor‑advised fund at San Diego Foundation lets you claim the full deduction in the year you contribute to the fund, then recommend grants to nonprofits on your own schedule.
FAQs on Bunching Charitable Donations
1. What is bunching charitable donations?
Alternating between itemizing in one year (by concentrating gifts) and taking the standard deduction in the next, to reduce taxes over a multi‑year period while keeping your giving steady.
2. Who benefits most?
Households whose itemized deductions in a typical year are close to, but below, the standard deduction.
3. How often do people bunch?
Every two or three years is common. Your plan depends on income, goals and other deductions.
4. Can I bunch with a DAF?
Yes. You can make a large, tax deductible gift to your DAF in one year and recommend grants to charities on your timeline.
5. What records do I need?
Save receipts and acknowledgments for all donations. Your DAF simplifies this by consolidating tax receipts.
Charitable Contributions 2025 Standard Deduction
For tax year 2025, the IRS inflation adjustment set the standard deduction at:
- $30,000 for married couples filing jointly
- $15,000 for single filers and married filing separately
- $22,500 for heads of household
These figures help you decide whether bunching could push your itemized deductions above the threshold in 2025.
Keep Your Favorite Nonprofits Funded Every Year
Many nonprofits count on steady support. If you bunch gifts in 2025, you can still keep annual grants flowing by using a DAF at San Diego Foundation (SDF) to schedule grants in 2026 and beyond.
Talk With Us
The SDF team can help you evaluate bunching, fund a DAF or plan non‑cash gifts. Connect your tax advisor and our Giving Team to align your giving plan with the 2025 Giving Window and the new rules on the horizon in 2026.










