You donate $20,000 to charity every year. You're a generous person who values giving back. But when you file your taxes, you claim the standard deduction because $20,000 in charitable giving plus a few thousand in other itemized deductions doesn't exceed the $30,000 standard deduction for married couples.
Your $20,000 in charitable giving saves you exactly $0 in taxes.
Bunching charitable deductions solves this problem. By concentrating multiple years of charitable giving into a single year, you can itemize deductions when it matters and take the standard deduction in other years, getting tax benefits from the same total giving.
The Standard Deduction Problem
The Tax Cuts and Jobs Act nearly doubled the standard deduction, simplifying taxes for millions of Americans. But it created a problem for charitable givers:
2026 standard deduction:
- Married filing jointly: $30,000
- Single: $15,000
- Head of household: $22,500
Common itemized deductions:
- Charitable contributions
- State and local taxes (capped at $10,000)
- Mortgage interest
- Medical expenses exceeding 7.5% of AGI
For many high earners, total itemized deductions don't exceed the standard deduction. The $10,000 state and local tax (SALT) cap means even high-income taxpayers in high-tax states struggle to itemize.
Example: You're married, donate $20,000 annually, pay $10,000 in SALT, and have $5,000 in mortgage interest. Total itemized deductions: $35,000. This exceeds the $30,000 standard deduction by only $5,000, meaning your $20,000 in charitable giving effectively generated only $5,000 in tax benefit.
Bunching fixes this.
What Is Bunching Charitable Deductions?
Bunching (also called "lumping") is the strategy of concentrating multiple years' worth of charitable giving into a single tax year to exceed the standard deduction threshold, then taking the standard deduction in subsequent years.
How it works:
- Year 1: Donate three to five years' worth of charitable contributions in a single year, creating a large itemized deduction.
- Years 2-4: Take the standard deduction (no charitable donations or minimal donations).
- Year 5: Repeat the bunching cycle.
You give the same total amount over time, but you structure it to maximize tax benefits.
The Donor-Advised Fund Solution
Bunching requires donating multiple years' worth of contributions in one year. But what if you want to support charities annually, not in lump sums every five years?
Enter donor-advised funds (DAFs).
How DAFs work:
- Contribute a large lump sum to a DAF in year one (e.g., $100,000 for five years of giving).
- Claim the full $100,000 charitable deduction in year one.
- Recommend grants from the DAF to charities annually (e.g., $20,000 per year for five years).
From the charity's perspective, they receive annual support. From the IRS's perspective, you made a single large donation in year one. From your perspective, you maximized your tax deduction.
Real-World Example: Bunching vs. Annual Giving
Scenario: You're married, donate $20,000 annually to charity, pay $10,000 in SALT, and have minimal other deductions.
Without Bunching (Annual Giving)
Each year:
- Charitable contributions: $20,000
- SALT: $10,000
- Total itemized deductions: $30,000
- Standard deduction: $30,000
- Tax benefit: $0 (standard deduction equals itemized deductions)
Five-year total: $0 in tax savings from $100,000 in charitable giving.
With Bunching (via Donor-Advised Fund)
Year 1:
- Contribute $100,000 to DAF
- SALT: $10,000
- Total itemized deductions: $110,000
- Standard deduction: $30,000
- Excess over standard deduction: $80,000
- Tax savings at 35% federal + 5% state: $32,000
Years 2-5:
- Take standard deduction: $30,000 each year
- No charitable deductions (DAF makes grants, but you already claimed the deduction)
Five-year total: $32,000 in tax savings from the same $100,000 in charitable giving.
Result: Bunching saves $32,000 compared to annual giving.
Advanced Bunching Strategies
Donate appreciated securities to maximize benefits
Instead of donating cash to your DAF, donate appreciated stocks or mutual funds.
Double tax benefit:
- Avoid capital gains tax on the appreciated securities
- Claim a charitable deduction for the full fair market value
Example: You bought stock for $50,000 that's now worth $100,000. If you sell and donate cash, you pay $10,000-$15,000 in capital gains tax. If you donate the stock directly, you avoid the capital gains tax and deduct $100,000.
Total tax savings: $32,000 from bunching + $15,000 from avoiding capital gains = $47,000.
Coordinate bunching with high-income years
Bunch charitable deductions in years when your income (and tax bracket) is highest.
Example: You're selling a business or exercising stock options in 2026, pushing you into the 37% federal bracket. Donate $200,000 to a DAF in 2026 to offset the high-income spike. This generates tax savings at your highest marginal rate.
Use bunching to optimize Roth conversions
Charitable deductions reduce taxable income, creating room for larger Roth conversions without pushing into higher tax brackets.
Example: You want to convert $150,000 from a traditional IRA to a Roth IRA, keeping you in the 24% bracket. But that conversion would push you into the 32% bracket.
Solution: Donate $50,000 to a DAF in the same year. The $50,000 charitable deduction offsets part of the conversion income, allowing the full $150,000 conversion at the 24% rate.
Bunch state taxes if timing allows
If you can control the timing of state tax payments, bunch them in the same year as charitable giving to maximize itemized deductions.
Example: You typically pay $10,000 in state taxes via estimated payments. In year one, make your Q4 payment in December instead of January (next year). This creates $15,000 in state tax deductions in year one (limited by the $10,000 SALT cap, so only $10,000 deductible, but it adds to itemized deductions).
This is a minor optimization but can help push total itemized deductions higher.
Common Bunching Mistakes
Mistake 1: Waiting too long to start
The longer you wait, the more tax savings you miss. If you're already donating annually and not itemizing, start bunching now.
Mistake 2: Donating cash instead of appreciated securities
Donating appreciated stock provides dual tax benefits. Always donate appreciated securities when possible.
Mistake 3: Not using a donor-advised fund
Some givers bunch by making large direct donations every few years. But this prevents annual support to charities. DAFs solve this problem.
Mistake 4: Forgetting to document contributions properly
Charitable contributions require written acknowledgment for donations over $250 and qualified appraisals for non-cash donations over $5,000. Keep thorough records.
Mistake 5: Over-bunching beyond what makes sense
Don't donate more than you can afford just for tax benefits. Bunch normal giving levels, not beyond.
How to Implement Bunching
Step 1: Calculate your annual charitable giving
How much do you typically give to charity each year?
Step 2: Determine your bunching cycle
Three to five years is typical. Shorter cycles (two to three years) work if your annual giving is smaller. Longer cycles (five to seven years) work for larger annual giving amounts.
Step 3: Open a donor-advised fund
Major providers include Fidelity Charitable, Schwab Charitable, and Vanguard Charitable. Compare fees and investment options.
Step 4: Make your large contribution
Fund your DAF with three to five years' worth of charitable giving. Use appreciated securities if possible.
Step 5: File your taxes and itemize
Claim the full DAF contribution as a charitable deduction. This should push you well above the standard deduction.
Step 6: Recommend grants from your DAF annually
Each year, recommend grants to your preferred charities. They receive annual support even though you already claimed the tax deduction.
Step 7: Take the standard deduction in subsequent years
In years two through four (or five), take the standard deduction. No charitable deductions because you already claimed them.
Step 8: Repeat the cycle
When your DAF balance runs low, repeat the bunching cycle with another large contribution.
Is Bunching Right for You?
Bunching makes sense if:
Your annual charitable giving plus other itemized deductions don't exceed the standard deduction. This is the primary indicator.
You give $10,000+ annually to charity. Smaller amounts may not generate enough tax benefit to justify the effort.
You can afford to fund multiple years of giving at once. If cash flow is tight, bunching may not be practical.
You're in the 24% federal bracket or higher. Lower tax brackets see smaller benefits.
Bunching may not make sense if:
You already exceed the standard deduction significantly. If your itemized deductions are already $50,000+, bunching adds minimal value.
You give sporadically, not consistently. Bunching works best for consistent givers.
You don't have appreciated securities to donate. Bunching still works with cash, but benefits are smaller.
Bunching Is Tax-Smart Generosity
Bunching doesn't change your charitable giving or your commitment to causes you care about. It simply structures giving to maximize tax benefits.
For high net worth individuals who value charitable giving, bunching can save $10,000-$30,000+ per cycle. That's money you can redirect to additional charitable giving or keep for other financial goals.
Work with your financial advisor and CPA to implement bunching. The strategy is straightforward, and the tax savings compound over decades.
This information is not intended to be a substitute for specific individualized tax or investment advice. We suggest that you discuss your specific situation with a qualified tax or investment advisor.
Please consult your tax professional regarding your specific tax situation.
Content in this material is for general information only and not intended to provide specific advice or recommendations for any individual.
Securities offered through LPL Financial, Member FINRA/SIPC. Investment advice offered through Great Valley Advisor Group, a registered investment advisor and separate entity from LPL Financial.
Chesapeake Financial Planners | 2402 Scotlon Ct, Forest Hill, MD 21050 | (410) 652-7868 | www.chesapeakefp.com
