Tax calculator
Donor-Advised Fund Bunching Calculator
Could bunching charitable gifts create a larger usable federal deduction?
What this tool helps you answer
Could bunching charitable gifts create a larger usable federal deduction?
Bunching several years of charitable gifts into one donor-advised fund contribution can create a larger itemized deduction in the contribution year while grants continue over time. This calculator compares annual and bunched deductions under 2026 rules, including the new charitable floor and visible adjusted-gross-income limits.
Transparent method
How the estimate works
See how the estimate is calculated
Apply the 2026 charitable deduction floor of 0.5% of adjusted gross income to annual gifts and to the larger contribution in the bunching year.
Limit the current deduction to the entered asset type's general adjusted-gross-income percentage, then compare itemized deductions with the filing-status standard deduction each year.
Estimate the tax difference from added deductions and separately show possible long-term capital-gain tax avoided when appreciated public stock funds the account.
What to check before acting on the result
How to read it
- Focus on deductions actually used, not just the size of the contribution.
- Check whether the bunch-year gift exceeds the AGI limit and creates a carryforward.
- For appreciated stock, confirm holding period, basis, valuation, and sponsor acceptance before transferring shares.
Not included
- The separate 2026 limit on the tax value of itemized deductions for some high-income taxpayers
- Appraisals, substantiation, excess-benefit, or donor-advised fund prohibited-benefit rules
- Carryforward use in later tax years with changing income
- State tax, sponsor fees, investment results, grant recommendations, or legal control of the contribution
Common questions
Frequently asked questions
What does charitable bunching mean?
It means making several years of deductible gifts in one tax year so itemized deductions may exceed the standard deduction, then using the standard deduction in other years.
Why use a donor-advised fund?
The donor can make one deductible contribution to the sponsoring charity and recommend grants over time, although the sponsor has exclusive legal control of the assets.
What is the 2026 charitable deduction floor?
For taxpayers who itemize, deductible charitable contributions generally begin only above 0.5% of adjusted gross income starting in 2026.
Can appreciated stock be donated?
Public stock held more than one year may generally support a fair-market-value deduction subject to limits and may avoid realizing embedded gain, but basis and substantiation must be confirmed.
Sources
Rules and references behind this calculator
Want the fine print? See sources, methods, and limits.