Bunching itemized deductions is a year-end tax planning strategy that can turn otherwise lost deductions into real tax savings. The concept is straightforward: instead of spreading deductible expenses evenly across two or more years, you concentrate them into a single tax year so the total exceeds your standard deduction threshold. For tax year 2026, the standard deduction is $16,100 for single filers and $32,200 for married couples filing jointly, and many taxpayers find that their annual deductible expenses fall just short of making itemization worthwhile. Bunching tax deductions solves that problem by giving you a year where itemizing clearly wins and a year where you simply take the standard deduction instead.
This bunching strategy is especially relevant for taxpayers who sit near the line between itemizing and claiming the standard deduction. If your total deductible expenses, such as mortgage interest, state and local taxes, charitable contributions, and miscellaneous itemized deductions, hover close to the standard deduction amount, you may get little or no benefit from itemizing in any given year. By deliberately timing when you pay certain expenses, you can push one year’s total well above the standard deduction while accepting the standard deduction in the alternate year. The result is a measurable reduction in your overall tax bill across the two-year period.
How the bunching strategy works in practice
The mechanics of bunching itemized deductions are simple. You identify the deductible expenses you have control over, primarily charitable contributions, medical expenses, and certain professional fees, then accelerate or defer them so they land in the same tax year. For example, instead of donating $5,000 to charity each year, you might donate $10,000 in one year and nothing the next. In the bunching year, your total deductions are more likely to exceed the standard deduction, giving you a larger tax benefit than two years of modest giving would provide.
Charitable contributions are the most flexible category for bunching because you control when and how much you give. Medical expenses, investment advisory fees, and tax preparation costs also lend themselves to this approach, though each comes with its own rules and limitations. A coordinated plan built with your tax advisor keeps these moving parts aligned with the rest of your return.
Which expenses qualify for bunching itemized deductions
Not every deductible expense is equally suited for a bunching strategy. The best candidates are expenses where you have meaningful timing control. The primary categories to consider follow below.
Charitable contributions are the easiest to bunch. You can prepay multiple years of giving into a single tax year. Donor-advised funds make this particularly convenient: you contribute a lump sum to the fund in your bunching year, claim the full deduction immediately, and then distribute grants to your chosen charities over the following years at your own pace. The IRS sets clear documentation and substantiation rules for these gifts, summarized in its guidance on charitable contributions. One change makes bunching even more attractive starting in 2026: under the One, Big, Beautiful Bill Act, itemizers can deduct charitable gifts only to the extent they exceed 0.5% of adjusted gross income. Concentrating several years of giving into one year helps you clear that new floor once rather than losing a slice of the deduction every year.
Medical and dental expenses are deductible only to the extent they exceed 7.5% of your adjusted gross income (AGI). If you have elective procedures or significant dental work planned, scheduling them in the same year as other large medical costs can help you clear that floor. The IRS outlines what qualifies in Topic No. 502, Medical and Dental Expenses.
State and local tax (SALT) deductions are capped under current law, and the cap recently changed. The One, Big, Beautiful Bill Act raised the SALT deduction limit to $40,000 ($20,000 for married filing separately) for tax years 2025 through 2029, up from the prior $10,000 ceiling, with the benefit phasing down for taxpayers whose modified AGI exceeds $500,000. Because SALT timing is constrained by when those taxes are actually due, charitable giving and medical expenses usually remain the more controllable targets for a bunching approach.
Professional and advisory fees, including tax preparation, financial planning, and certain legal fees, may be deductible depending on your situation. Where they are, timing payments into a single year supports the bunching strategy. Because the deductibility of these fees has narrowed in recent years, confirm each item’s treatment before you rely on it.
Why the standard deduction makes bunching more valuable
Before the Tax Cuts and Jobs Act (TCJA) of 2017, a much larger share of taxpayers itemized deductions every year. The TCJA nearly doubled the standard deduction, which pushed millions of filers into standard deduction territory, and the One, Big, Beautiful Bill Act made those higher amounts permanent and indexed them for inflation. That shift is precisely what makes bunching itemized deductions so valuable today. You can confirm current amounts using the IRS standard deduction page and its tax year 2026 inflation adjustments.
When the standard deduction is high, your itemized deductions need to reach a higher threshold to justify itemizing. In years where you spread expenses evenly, you may fall short of that threshold every single year, effectively getting zero benefit from those deductible expenses. Bunching ensures you capture a meaningful tax benefit from those same expenses at least every other year.
Consider a married couple filing jointly with $20,000 in annual deductible expenses. The 2026 standard deduction of $32,200 exceeds their itemized total, so they gain nothing from itemizing. But if they bunch two years of charitable giving into one year, they might have $35,000 or more in deductions, enough to itemize and capture a real tax benefit, while taking the standard deduction the following year.
Using donor-advised funds to make bunching easier
A donor-advised fund (DAF) is one of the most practical tools for executing a bunching strategy with charitable contributions. You make a large, one-time contribution to the fund, receive an immediate tax deduction for the full amount, and then recommend grants to your favorite charities over time.
DAFs remove the main friction point of charitable bunching: you do not have to identify every recipient charity upfront. You simply fund the account in your bunching year and make distributions whenever you choose. This means you maintain your giving pattern to the causes you care about while optimizing the tax timing.
Most major brokerage firms and community foundations offer donor-advised funds with low minimum contributions, making them accessible to a wide range of taxpayers. Before funding one, confirm the contribution rules and any AGI percentage limits that apply to your gift type.
Watch out for the alternative minimum tax
One critical consideration when using this strategy is the alternative minimum tax (AMT). The AMT is a parallel tax calculation that disallows certain deductions, including state and local taxes and many miscellaneous itemized deductions. If you are subject to the AMT, bunching certain expenses into a single year may not produce the expected tax benefit because those deductions are eliminated under the AMT calculation. The IRS explains the mechanics in its guidance on the alternative minimum tax.
Before executing a bunching strategy, check whether your income level and deduction profile put you at risk for the AMT. Working with a tax professional to run both the regular tax and AMT calculations can help you avoid a costly surprise.
AGI-based phase-outs and income thresholds to consider
Taxpayers with higher incomes should also be aware of limitations on the value of itemized deductions. The old Pease limitation, which reduced total itemized deductions by 3% of the amount by which AGI exceeded a threshold, was suspended by the TCJA and has now been permanently repealed. Beginning in 2026, the One, Big, Beautiful Bill Act replaces it with a new rule that caps the tax benefit of itemized deductions at 35 cents per dollar for filers in the top 37% bracket. Staying current on these thresholds matters because they directly affect whether this bunching approach will produce the savings you expect.
If your AGI is near any relevant phase-out threshold, you may want to combine bunching with income-timing strategies, such as deferring a bonus or accelerating Roth IRA conversions, to maximize the net benefit. These moves interact with each other, so model the full picture before you commit to any single step.
How to decide if bunching is right for you this year
The decision to bunch starts with a mid-year checkup. Add up your deductible expenses incurred so far and estimate what you expect to pay for the rest of the year. Compare that total to the standard deduction for your filing status. If your total is close to but not clearly above the standard deduction, bunching tax deductions in the current or following year is likely worth considering.
Ask yourself these questions:
- Can I prepay any charitable contributions before December 31?
- Are there elective medical procedures I have been considering?
- Do I have flexibility on when I pay professional fees?
- Would a donor-advised fund contribution make sense for my giving goals?
If the answer to several of these is yes, you are a strong candidate for the bunching strategy. If you do not see a path to exceeding the standard deduction even with bunching, take the standard deduction and revisit the strategy next year. For households with complex returns, our tax and accounting team can model the two-year outcome and confirm the timing that produces the largest after-tax benefit.
Frequently Asked Questions
What does bunching itemized deductions mean?
Bunching itemized deductions means concentrating two or more years’ worth of deductible expenses into a single tax year. The goal is to exceed the standard deduction in that year, allowing you to itemize and capture a tax benefit you would otherwise lose by spreading expenses across multiple years.
When does it make sense to bunch deductions instead of taking the standard deduction?
Bunching makes sense when your annual deductible expenses are close to but consistently below the standard deduction. By shifting the timing of charitable gifts, medical procedures, or professional fees, you can push one year’s total above the threshold while taking the standard deduction in alternate years.
What types of expenses are best for a bunching strategy?
Charitable contributions offer the most flexibility because you control the timing and amount. Medical and dental expenses, tax preparation fees, and investment advisory fees are also strong candidates. Donor-advised funds are a popular tool for bunching charitable giving without disrupting your year-to-year giving habits.
How does the alternative minimum tax affect bunching deductions?
The AMT disallows certain deductions that are permitted under the regular tax system, including state and local taxes and some miscellaneous itemized deductions. If you are subject to the AMT, some of the expenses you bunch may not produce the expected tax savings. Always run both calculations before committing to a bunching plan.
Can I use a donor-advised fund to bunch charitable donations?
Yes. A donor-advised fund lets you make a large charitable contribution in one tax year, claim the full deduction immediately, and then distribute grants to charities over future years. This approach is one of the most efficient ways to bunch charitable deductions while maintaining consistent giving to organizations you support.
How often should I bunch deductions?
Most taxpayers who use this strategy alternate between a bunching year, when they itemize, and a standard deduction year. A typical cadence is every other year, but the right timing depends on your specific income, expense patterns, and any changes to the tax code. Review your situation annually with a tax advisor to determine the best approach.
