W-4 Guide for Small Business Owners
If you run payroll, the W-4 is your problem too. When employees fill it out wrong, they either complain about small paychecks all year or panic at tax time because they owe. Either way, the questions land on your desk.
The 2026 W-4 has some significant changes thanks to the One Big Beautiful Bill Act (OBBBA). New deduction lines, a higher Child Tax Credit, and a redesigned worksheet. all of which affect how much you withhold from every paycheck. Here's what you need to know as the person running the business.
What Changed on the 2026 W-4
The form is now five pages (up from four) and includes several OBBBA-driven updates:
| Change | What It Means for Payroll |
|---|---|
| Child Tax Credit: $2,200 (up from $2,000) | Employees with kids may claim more in Step 3, reducing withholding slightly |
| New tip deduction (up to $25,000) | Employees in tipped roles can reduce withholding via Step 4(b) |
| New overtime deduction (up to $12,500 single / $25,000 joint) | Hourly workers with regular OT can adjust withholding downward |
| Auto loan interest deduction (up to $10,000) | Employees with new car loans may add this to Step 4(b) |
| Expanded Step 4(b) worksheet | Now a full page; your payroll system needs to accept the new inputs |
| Exemption checkbox | Replaces handwritten "Exempt". cleaner to process |
The tip and overtime deductions phase out above $150,000 single / $300,000 joint. They're available 2025–2028.
What This Means If You Run Payroll
Update your onboarding packet. New hires should get the 2026 form, not an older version. If you use a self-service payroll portal, make sure it reflects the new Step 4(b) lines.
Check your payroll software. Most major providers (Gusto, ADP, Paychex, QuickBooks Payroll) have already updated for 2026 withholding tables. If you're using a smaller system, verify it's pulling from IRS Publication 15-T (2026).
Don't fill it out for them. You can answer general questions, but you can't tell employees what to enter. If they ask, point them to the IRS Tax Withholding Estimator at irs.gov/W4App, or to a paycheck calculator so they can see how changes affect their take-home.
Existing employees don't have to resubmit. Only new hires are required to use the 2026 form. But employees who want to take advantage of the new tip, overtime, or auto loan deductions will need to submit an updated W-4.
When Employees Should Update Their W-4
Encourage your team to review their W-4 at the start of each year and after major life changes. The most common triggers:
- Got married or divorced. filing status and bracket changes
- Had a kid. $2,200 Child Tax Credit in Step 3
- Spouse started or stopped working. Step 2 checkbox matters
- Started earning tips or regular overtime: new Step 4(b) deductions for 2026
- Big refund or surprise tax bill last year. withholding was off
A $2,000+ refund means the employee was overwithholding by ~$167/month. That's money they could've had in every paycheck. A surprise bill means the opposite, and they might ask you why payroll didn't take out enough (even though it's their W-4, not yours).
If You're a Solopreneur or Freelancer
If you pay yourself a W-2 salary through an S-corp or LLC, you fill out a W-4 too. The same rules apply, but you have more control since you're both the employer and the employee.
Key moves for 2026:
- Set your salary withholding to match your actual tax liability. Use a paycheck calculator to dial it in so you're not overpaying quarterly.
- If you earn overtime or tip income through your business, the new OBBBA deductions may reduce what you need to withhold.
- Coordinate with estimated payments. Your W-4 withholding covers your salary, but you'll still owe quarterly estimates on distributions and other business income.
The 2026 Standard Deduction (Quick Reference)
If an employee leaves Step 4(b) blank, withholding defaults to the standard deduction:
| Filing Status | 2026 Amount |
|---|---|
| Single | $16,100 |
| Married Filing Jointly | $32,200 |
| Head of Household | $24,150 |
Seniors 65+ also get an additional $6,000 deduction under OBBBA (phases out above $75K single / $150K joint), on top of the existing additional standard deduction.
Frequently Asked Questions
Can I require employees to submit a new W-4 for 2026?
No. The IRS only requires new hires to complete the current form. Existing employees can keep their old W-4 on file. But you can encourage them to review it, especially if the new OBBBA deductions apply to them.
What if an employee doesn't submit a W-4?
You withhold at the default "Single" rate with no adjustments. Which usually means more tax is withheld than necessary.
Am I liable if an employee fills out their W-4 wrong?
No. Your obligation is to withhold based on what they submit. You're not responsible for their tax accuracy. But you are required to process the form correctly through your payroll system.
What's the difference between the 2020 and 2026 W-4?
Same five-step structure, but the 2026 version adds new deduction lines in Step 4(b) for tips, overtime, and auto loan interest. The Child Tax Credit amount also increased to $2,200. The overall layout is familiar. It's not a full redesign.