How can I reduce taxes on my bonus?

The most effective strategies: (1) increase 401(k) contributions to reduce taxable income — the 2026 limit is $23,500; (2) fund an HSA ($4,300 individual / $8,550 family) if you have a high-deductible health plan; (3) contribute to a traditional IRA ($7,000) if deductible; (4) make charitable donations in the bonus year; and (5) if possible, defer the bonus to next year if your income will be lower.

Can I put my entire bonus into my 401(k)?

You can direct your employer to withhold a large percentage of your bonus toward your 401(k), but only up to the annual limit — $23,500 in 2026 (plus $7,500 catchup if 50+). If you've already maxed your 401(k) through regular contributions, you cannot shelter additional bonus income in it. Contact payroll before your bonus pays out to change your deferral percentage.

Should I contribute my bonus to a Roth or traditional 401(k)?

If your bonus pushes you into a higher marginal bracket for the year, a traditional (pre-tax) 401(k) saves you money at your current high rate. If your income is relatively low and you expect higher rates in retirement, Roth is better. For most mid-career earners receiving a meaningful bonus, traditional 401(k) tax deferral on bonus income is the optimal choice.

Does contributing to charity help with bonus taxes?

Yes, if you itemize deductions. Cash donations to qualifying charities reduce your taxable income. For maximum efficiency, donate appreciated stock or securities — you get the full fair-market-value deduction without recognizing the capital gain. A $5,000 donation of stock can reduce a bonus-year tax bill by $1,100+ in the 22% bracket.

Tax Planning for a Bonus: How to Keep More of Your Money

The Core Principle: Reduce Taxable Income in the Bonus Year

The only way to actually reduce taxes on a bonus is to reduce your taxable income in the year the bonus is received. Here are the most effective tools, roughly in order of impact.

Strategy 1: Maximize Your 401(k) Before Year-End

2026 limits: $23,500 employee contribution ($31,000 if age 50 or older)

Pre-tax 401(k) contributions reduce your federal and state taxable income dollar-for-dollar. If your bonus pushes you from the 22% bracket into the 24% bracket, increasing 401(k) contributions can pull income back down.

How to use this around a bonus:

Option A — Increase contributions before bonus pays out: Tell payroll to raise your 401(k) deferral percentage before your bonus paycheck. Some employers allow you to elect a specific bonus deferral percentage separate from your salary deferral.

Example: $10,000 bonus, $6,000 of remaining 401(k) room. Elect to defer $6,000 → saves $1,320 in taxes at 22% bracket.

Option B — Increased monthly contributions after bonus: If the bonus has already been paid and you couldn’t shelter it, increase your 401(k) contribution rate on regular paychecks for the rest of the year to shelter equivalent salary income.

2026 contribution limit room estimate:

YTD 401(k) Contributions	Remaining Room	Tax Savings at 22%	at 24%
$0	$23,500	$5,170	$5,640
$10,000	$13,500	$2,970	$3,240
$18,000	$5,500	$1,210	$1,320
$23,500	$0	$0	$0

Strategy 2: Fund an HSA

2026 limits: $4,300 individual, $8,550 family, $1,000 catchup (55+)

HSAs require enrollment in a high-deductible health plan (HDHP). Contributions are pre-tax (if made through payroll) or tax-deductible (if made directly). Unlike FSAs, HSA funds roll over indefinitely.

Triple tax advantage:

Contributions reduce taxable income
Growth is tax-free
Withdrawals for qualified medical expenses are tax-free

Tax savings on max HSA contribution:

Filing Status	Max HSA	Savings at 22%	Savings at 24%
Individual	$4,300	$946	$1,032
Family	$8,550	$1,881	$2,052

Strategy 3: Traditional IRA

2026 limits: $7,000 ($8,000 if 50+)

Traditional IRA contributions are deductible if:

You have no workplace retirement plan, OR
You have a workplace plan and your income is below the phase-out range ($79,000-$89,000 for single filers; $126,000-$146,000 married filing jointly in 2026)

For high earners who aren’t deductible, a backdoor Roth conversion may be more appropriate than a non-deductible traditional IRA.

Deadline: IRA contributions can be made up to the April 15 tax filing deadline for the prior year.

Strategy 4: Charitable Contributions

Charitable deductions only help if you itemize (total deductions exceed the standard deduction: $15,000 single, $30,000 married in 2026).

Cash donations: Deductible up to 60% of AGI.

Appreciated stock donation (most efficient): If you own stock worth $10,000 with a $4,000 cost basis:

Sell and donate cash: Owe capital gains tax on $6,000 gain first (~$900 at 15% rate), then deduct the $9,100 net donation
Donate the stock directly: Deduct the full $10,000 fair market value, pay zero capital gains

Tax savings donating stock vs. cash: $900 + (deduction benefit on extra $900 donated) = meaningful extra savings.

Donor Advised Fund (DAF): Contribute cash or stock to a DAF in the bonus year, take the full deduction, and distribute grants to specific charities over time.

Strategy 5: Defer the Bonus to Next Year

If your employer will allow it, asking for your bonus to be paid in January instead of December moves the taxable event to the following year.

When this helps:

You expect lower income next year (parental leave, career transition, early retirement)
You expect to be in a lower tax bracket next year
You’ve already maxed all deductions for this year

When this doesn’t help:

Your income will be the same or higher next year
Your employer won’t accommodate the request (many won’t for year-end bonuses)

Strategy 6: Business and Education Deductions

If you are self-employed, have a side business, or incur deductible expenses:

Business expenses reduce self-employment income, which then reduces AGI
Student loan interest up to $2,500 deductible if AGI is below $90,000 ($185,000 MFJ)
Educator expenses up to $300 for qualifying teachers
SEP-IRA or Solo 401(k) if self-employed — can contribute up to 25% of net self-employment income ($70,000 total limit in 2026)

Tax Bracket Planning Around a Bonus

Understanding what bracket your bonus income falls into determines the priority of strategies.

2026 Federal Tax Brackets (Single Filer):

Taxable Income	Marginal Rate
Up to $11,925	10%
$11,926 – $48,475	12%
$48,476 – $103,350	22%
$103,351 – $197,300	24%
$197,301 – $250,525	32%
$250,526 – $626,350	35%
Over $626,350	37%

Example: $80,000 salary + $15,000 bonus

Total: $95,000 (before deductions)
After standard deduction ($15,000): $80,000 taxable income
Marginal bracket before bonus: 22%
The $15,000 bonus pushes $80k → $95k taxable = still in 22%
Only the $103,350 – $95,000 = $8,350 before touching 24%

Action: A $8,350 increase in 401(k) contributions would keep you in the 22% bracket entirely.

How Much Can These Strategies Save?

Strategy	Max Contribution	Tax Saved (22%)	Tax Saved (24%)
401(k) remaining room	Up to ~$23,500	Up to $5,170	Up to $5,640
HSA (individual)	$4,300	$946	$1,032
Traditional IRA	$7,000	$1,540	$1,680
Charitable (itemizer)	Unlimited (60% AGI cap)	Varies	Varies
Combined max		$7,656+	$8,352+