How to Have the Least Amount of Taxes Withheld

The fastest way to have the least amount of federal tax withheld from your paycheck is to file a new Form W-4 that reflects every deduction, credit, and pre-tax contribution you actually qualify for, then verify the numbers with the IRS Tax Withholding Estimator so you land just above the safe-harbor floor instead of loaning the government money all year. Most people over-withhold because the W-4 sitting in their payroll file treats the standard deduction as their only tax break. For 2026, that standard deduction is $32,200 for married couples filing jointly and $16,100 for single filers, and the One Big Beautiful Bill Act added several new above-the-line deductions on top of it.¹ Every credit and deduction you leave off your W-4 becomes withholding you did not owe.

The W-4 Lines That Actually Lower Withholding

Your employer runs the entries on your Form W-4 through the formulas in IRS Publication 15-T to produce your per-paycheck withholding.² Two lines on that form do almost all the work of pulling withholding down:

Step 3, where you enter the total dollar value of credits you expect to claim, including the Child Tax Credit, the credit for other dependents, and any other non-refundable credits you anticipate. Every dollar you put here reduces withholding dollar-for-dollar across your remaining paychecks.³
Step 4(b), where you enter deductions above the standard deduction. Larger number here, lower withholding.

The biggest mistake people make is leaving both blank. When those lines are empty, payroll treats your paycheck as though the standard deduction is your only tax break. If you itemize, claim credits, or make above-the-line deductions, a blank Step 3 and Step 4(b) will over-withhold you every pay period.

Two other lines matter in the opposite direction. Step 4(a) adds withholding to cover non-wage income like interest or dividends, so leave it blank if you want less withheld and you have another plan for that tax. Step 4(c) asks for extra withholding on top of the calculation, so leave that blank too.³

Use the IRS Tax Withholding Estimator

Rather than guessing at the numbers for Steps 3 and 4(b), run the free IRS Tax Withholding Estimator. It asks for your filing status, wage income, other income, and expected deductions and credits, then tells you the exact dollar amounts to enter.⁴

Before you open it, pull together your most recent pay stub with year-to-date figures, last year’s Form 1040 (including Schedule A if you itemized), and rough estimates of any non-wage income you expect. The estimator also flags whether your current withholding puts you on track for a refund or a balance due, so you can see the effect of a change before you file the new W-4. It’s especially useful mid-year, when several months of withholding have already gone through and the remaining paychecks have to do the adjusting.

Deductions To Enter on Step 4(b)

The Deductions Worksheet on page 3 of the W-4 walks through the math for Step 4(b).³ Add up your expected itemized deductions, subtract the standard deduction for your filing status, and enter the difference. Then add any above-the-line deductions on top.

The 2026 standard deductions are $32,200 for married filing jointly, $16,100 for single filers, and $24,150 for head of household.¹ A married couple expecting $20,000 in state and local taxes, $12,000 in mortgage interest, and $3,000 in charitable gifts has $35,000 in itemized deductions. Subtracting the $32,200 standard deduction leaves $2,800 for Step 4(b), before adding any above-the-line items.

A big change for 2026: the state and local tax deduction cap that had been stuck at $10,000 since 2018 rises to roughly $40,000 under the One Big Beautiful Bill Act, with a small annual inflation adjustment.⁵ If you live in a high-tax state and had been capped at $10,000, your itemized total may now clear the standard deduction by a wide margin, producing a much larger Step 4(b) number and a meaningful drop in withholding.

The 2026 W-4 Deductions Worksheet also accounts for several new above-the-line deductions created by the One Big Beautiful Bill Act: qualified tips, overtime compensation, and interest on passenger vehicle loans.³ Estimate any of these that apply and include them on the worksheet. Common above-the-line deductions like student loan interest, deductible IRA contributions, and HSA contributions not made through payroll also belong here, even if your total itemized number doesn’t exceed the standard deduction.

Credits To Enter on Step 3

Credits reduce your tax bill dollar-for-dollar, which is why Step 3 hits withholding so hard. The form specifically lists the Child Tax Credit and the credit for other dependents, but you can include any non-refundable credits you expect to claim, such as the child and dependent care credit, education credits, or energy-efficiency credits.³

Be conservative. Credits with income phase-outs or spending thresholds are easy to overestimate, and if you claim more in Step 3 than you actually qualify for at year-end, you’ll owe the difference at filing time. Estimate the amount you’re confident you’ll claim, not the maximum theoretically possible.

Pre-Tax Contributions That Reduce Withholding Without a W-4 Change

Traditional 401(k) and 403(b) contributions come out of your paycheck before federal income tax is calculated, so they lower withholding automatically without any W-4 adjustment.⁶ For 2026, the 401(k) employee contribution limit is $24,500, with an additional $8,000 catch-up for workers age 50 and older and $11,250 for those aged 60 through 63.⁷ Every dollar you contribute shrinks the wages your employer reports in Box 1, and withholding drops accordingly.

Health Savings Account contributions made through payroll deduction work the same way. For 2026, you can contribute up to $4,400 with self-only health coverage or $8,750 with family coverage. Flexible Spending Accounts for medical or dependent care expenses also come out pre-tax.

One caveat: pre-tax retirement contributions reduce federal income tax withholding, but Social Security and Medicare taxes are still calculated on the full amount before the contribution. Increasing your 401(k) contribution lowers your income tax withholding but not your FICA withholding.

Claiming Exempt Status

The most aggressive legal move is claiming exempt on your W-4, which stops federal income tax withholding entirely. To qualify, you must meet both conditions: you had zero federal income tax liability last year, and you expect zero this year.³ In practice, this covers people whose total income falls below the filing threshold after the standard deduction.

On the 2026 W-4, you claim exempt by checking the box in the “Exempt from withholding” section and completing only Steps 1(a), 1(b), and 5. Leave everything else blank. The exempt claim expires every year; a new exempt W-4 for 2026 must be on file by February 16, 2027 to continue into the next year, or your employer will revert to full withholding.

Exempt status only covers federal income tax. Social Security tax (6.2%) and Medicare tax (1.45%) still come out of every paycheck, and an additional 0.9% Medicare tax kicks in on wages above $200,000 in a calendar year.⁸

Claiming exempt when you don’t qualify is where things get expensive. You’ll owe the full year’s tax at filing time, plus underpayment penalties and interest. The IRS monitors W-4s claiming exemption and can issue a “lock-in letter” to your employer that overrides your claim and forces withholding at a rate the IRS specifies.⁹ Once a lock-in letter is in place, your employer must follow the IRS instructions no matter what W-4 you submit next.

The Floor: Safe Harbors That Keep You Out of Penalty Territory

Cutting withholding means accepting a smaller refund or owing a small amount in April. That’s the point. But if you cut too far and owe more than $1,000 at filing time, the IRS may charge an underpayment penalty, which functions as interest on the shortfall at a rate currently running 7% annually, compounded daily.¹⁰¹¹

You avoid the penalty entirely if you meet either safe harbor:

Total withholding and estimated payments cover at least 90% of your current-year tax.
Total withholding and estimated payments equal at least 100% of last year’s tax. If your 2025 adjusted gross income was over $150,000 ($75,000 for married filing separately), that threshold rises to 110%.¹²

The prior-year safe harbor is the practical target for someone trying to minimize withholding, because you already know the number. Pull line 24 from your 2025 Form 1040 and set your 2026 withholding to match (or 110% if you’re over the income threshold). If your W-4 adjustments would push withholding below that floor, either dial the adjustments back or cover the gap with quarterly estimated payments on Form 1040-ES, due April 15, June 15, September 15, and January 15 of the following year.¹³

When To File a New W-4

Any life event that changes your filing status, credits, deductions, or non-wage income should trigger a new W-4:

Marriage or divorce.
A new child or dependent.
Buying a home, if mortgage interest may push you into itemizing.
Starting or losing a second job, or a spouse starting or stopping work.
Large investment gains or losses that change your expected non-wage income.

If a change means your current withholding will fall short of your tax for the rest of the year, the IRS requires a new W-4 within 10 days.¹⁴ Changes that reduce your tax have no mandatory deadline, but filing promptly means you see the benefit in the next paycheck instead of waiting for a refund.

Starting a job mid-year is a commonly missed opportunity. Standard payroll formulas treat your salary as though you earned it all year, which over-withholds when your actual annual income is lower. Run the Tax Withholding Estimator to produce adjusted entries that account for the shorter earning period.

Two Things the W-4 Cannot Fix

Bonuses, commissions, and other supplemental wages are often withheld at a flat 22% federal rate regardless of what your W-4 says, and supplemental wages over $1 million in a calendar year are subject to a mandatory 37% flat rate with no W-4 workaround.¹⁵ If your marginal rate is lower than 22% and the flat method is over-withholding on your bonuses, you can offset it by claiming more in Step 3 or Step 4(b) on your regular W-4 so total annual withholding lines up with your actual liability.

State income tax is a separate system. State withholding runs on its own form and its own rules, and rates range from zero in about nine states up to over 13% in the highest-tax states. Ask your employer’s payroll department or your state tax agency whether your state has an equivalent withholding certificate; the principle is the same, but the federal W-4 does not reduce state withholding.

1
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
2
Internal Revenue Service. Publication 15-T (2026), Federal Income Tax Withholding Methods
3
Internal Revenue Service. Form W-4 2026 Employee’s Withholding Certificate
4
Internal Revenue Service. Tax Withholding Estimator
5
Internal Revenue Service. One, Big, Beautiful Bill Provisions
6
Internal Revenue Service. Retirement Plan FAQs Regarding Contributions
7
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026
8
Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
9
Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide
10
Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
11
Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026
12
Internal Revenue Service. 2025 Instructions for Form 2210
13
Internal Revenue Service. 2026 Form 1040-ES Estimated Tax for Individuals
14
Internal Revenue Service. Publication 505 (2025), Tax Withholding and Estimated Tax
15
Internal Revenue Service. 2026 Publication 15-T Federal Income Tax Withholding Methods