Quick Answer
Deduction bunching means timing itemized deductions to concentrate them in alternating years. Instead of claiming $18,000 in itemized deductions annually (losing $12,000 in tax benefits), bunch $36,000 every other year to itemize once and take the $30,000 standard deduction the next year, potentially saving $1,800+ in taxes.
Best Answer
Robert Kim, CPA
Homeowners whose annual itemized deductions hover near the standard deduction threshold
What is deduction bunching?
Deduction bunching is a tax strategy where you deliberately time your itemized deductions to concentrate them in alternating years. Instead of spreading deductible expenses evenly across multiple years, you "bunch" them together to maximize your total tax savings.
The strategy works because of the 2026 standard deduction amounts: $15,000 for single filers and $30,000 for married filing jointly. If your annual itemized deductions are close to but don't significantly exceed these thresholds, bunching can help you claim more total deductions over a two-year period.
Example: $75,000 married couple with moderate deductions
Let's say you're married filing jointly with these annual deductible expenses:
Without bunching, you'd take the $30,000 standard deduction each year because it's higher. You're "losing" $26,000 in potential itemized deductions annually.
With bunching, you concentrate controllable expenses in alternating years:
Year 1 (Bunching year):
Year 2 (Standard deduction year):
Two-year comparison:
Result: $4,000 more in total deductions over two years
At a 22% marginal tax rate, this saves approximately $880 in federal taxes every two years.
Which expenses work best for bunching?
The most effective expenses to bunch are those you can control the timing of:
Fixed expenses you can't bunch:
Key factors that determine success
What you should do
Start by calculating your typical itemized deductions for the past 2-3 years. If they're within $5,000-$10,000 of the standard deduction, bunching could work. Focus on timing charitable donations and discretionary medical expenses.
Use our return scanner to analyze your last three tax returns and identify bunching opportunities specific to your situation.
Key takeaway: Bunching works best when your annual itemized deductions are $20,000-$35,000 for married couples or $10,000-$20,000 for singles — close enough to the standard deduction that strategic timing creates meaningful savings.
Key Takeaway: Deduction bunching can increase total deductions by $2,000-$8,000 over two years for taxpayers whose itemized deductions hover near the standard deduction threshold.
Two-year bunching comparison showing potential tax savings by income level
| Income Level | Annual Itemized | Without Bunching (2 years) | With Bunching (2 years) | Additional Deductions | Tax Savings* |
|---|---|---|---|---|---|
| $75,000 MFJ | $26,000 | $60,000 | $64,000 | $4,000 | $880 |
| $100,000 MFJ | $28,000 | $60,000 | $66,000 | $6,000 | $1,440 |
| $150,000 MFJ | $32,000 | $64,000 | $72,000 | $8,000 | $1,760 |
| $60,000 Single | $13,000 | $30,000 | $33,000 | $3,000 | $720 |
More Perspectives
Robert Kim, CPA
High-income taxpayers in states with significant SALT limitations who need advanced bunching strategies
Advanced bunching for high earners
As a high earner, you're likely already hitting the $10,000 SALT cap, which makes bunching both more challenging and more valuable. Your fixed deductions (SALT + mortgage interest) might already put you close to itemizing, so bunching charitable donations becomes the primary lever.
Example: $200,000 couple in California
Your typical annual deductions:
With strategic bunching:
Advanced strategies for high earners
Donor-advised funds: Contribute two years' worth of charitable giving to a donor-advised fund in the bunching year, then distribute to charities over time. You get the full deduction upfront while maintaining your giving schedule.
Prepaid property taxes: Some high-tax states allow prepayment of property taxes, though this is limited and may trigger AMT issues.
Business expense timing: If you have Schedule C income, time equipment purchases, professional development, and other business expenses to align with your bunching strategy.
State tax timing: Work with your tax preparer to optimize estimated payment timing, especially if you have irregular income or bonuses.
Key takeaway: High earners benefit most from bunching charitable donations through donor-advised funds, potentially saving $1,000-$3,000 every two years even with SALT limitations.
Key Takeaway: High earners can save $1,000-$3,000 every two years by bunching charitable donations, even with SALT caps limiting other deduction opportunities.
Robert Kim, CPA
Retirees whose deductions may fluctuate with medical expenses and charitable giving patterns
Bunching in retirement: Medical expenses and charitable giving
Retirees often have unique bunching opportunities because medical expenses tend to increase and you have more control over the timing of both medical procedures and charitable giving.
Medical expense bunching strategy
Medical expenses are only deductible when they exceed 7.5% of your adjusted gross income (AGI). If your AGI is $60,000, you need more than $4,500 in medical expenses to get any deduction.
Example bunching approach:
Charitable giving from retirement accounts
If you're over 70½, consider qualified charitable distributions (QCDs) from your IRA as part of your bunching strategy. While QCDs don't create itemized deductions, they can be timed with other bunched deductions to optimize your overall tax situation.
Combined strategy:
Key takeaway: Retirees can effectively bunch medical expenses and charitable donations, with medical bunching particularly valuable when expenses can be timed around the 7.5% AGI threshold.
Key Takeaway: Retirees can maximize medical expense deductions by bunching procedures in one year to exceed the 7.5% AGI threshold, often saving $500-$1,500 in taxes.
Sources
- IRS Publication 501 — Dependents, Standard Deduction, and Filing Information
- IRS Schedule A Instructions — Itemized Deductions
Related Questions
Reviewed by Robert Kim, CPA on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.