Why Is There No Federal Income Tax on My Nanny's Paycheck?
If your nanny's paycheck shows $0 federal income tax withheld, that's not a payroll error. It's exactly how the IRS withholding system is designed to work — and here's why.
Try the Paycheck Calculator →The short answer
If you run payroll for a nanny, caregiver, or household employee, you may have noticed that some paychecks show $0 for federal income tax (FIT) withholding. This is one of the most common questions we hear from household employers.
This is not the same as FICA (Social Security and Medicare). FICA is withheld from the very first dollar your employee earns. Federal income tax has a built-in floor.
How payroll withholding works
Every paycheck, your payroll system uses the IRS Publication 15-T wage-bracket tables to calculate federal income tax withholding. The calculation is based on the employee's W-4 form — specifically their filing status (Single, Married Filing Jointly, or Head of Household).
If your employee only filled out Step 1 of the W-4 and left Steps 3 and 4 blank, the system uses the standard deduction built into the withholding tables. The IRS does not withhold federal income tax until wages exceed the per-pay-period equivalent of that standard deduction.
If your employee earns below that line each pay period, their federal income tax withholding will be $0. This is correct behavior, not a payroll error.
2026 federal income tax withholding thresholds (weekly payroll)
Based on the 2026 IRS Publication 15-T wage-bracket method, here are the approximate thresholds where federal income tax withholding begins for weekly payroll. These assume the employee completed only Step 1 of their W-4 (filing status), with no dependents or additional adjustments.
| Filing Status | Annual Wages | Weekly Wages | FIT Begins At |
|---|---|---|---|
| Single | up to ~$15,800 | up to ~$303.85 | ~$303.86/wk |
| Head of Household | up to ~$23,700 | up to ~$455.77 | ~$455.78/wk |
| Married Filing Jointly | up to ~$31,200 | up to ~$600.00 | ~$600.01/wk |
How 2026 compares to 2025
The zero-FIT withholding thresholds increased modestly for 2026, reflecting inflation adjustments to the standard deduction that flow into the Publication 15-T wage-bracket tables.
- Single: $288.46/week in 2025 → $303.85/week in 2026
- Head of Household: $432.69/week in 2025 → $455.77/week in 2026
- Married Filing Jointly: $576.92/week in 2025 → $600.00/week in 2026
What this means in practice
For 2026, many nannies and household employees earning under approximately:
- $16,000/year (Single)
- $24,000/year (Head of Household)
- $31,000/year (Married Filing Jointly)
...will see $0 federal income tax withheld on their paychecks. This is normal and expected based on IRS withholding tables.
What can increase the zero-FIT range even further?
The thresholds above assume the employee's W-4 has only their filing status filled in (Step 1), with no dependents entered in Step 3 and no other adjustments in Step 4. If your employee claims dependents on their W-4, the zero-FIT threshold goes up even further. For example, a married employee who claims children in Step 3 of their W-4 could earn significantly more before any federal income tax is withheld.
Federal income tax is NOT the same as FICA
A common source of confusion is mixing up federal income tax withholding with Social Security and Medicare taxes (FICA). These are two completely different things on a paycheck:
Federal income tax withholding only kicks in after wages exceed the filing-status-based threshold described above.
So even when you see $0 for federal income tax, the paycheck will still show deductions for Social Security (6.2%) and Medicare (1.45%).
Important points to remember
Withholding is not the same as tax owed
Even if your employee's paycheck shows $0 federal income tax withheld, they may still owe tax when they file their annual return. This depends on their complete tax situation, including income from other jobs, a spouse's income, investment income, and other factors.
Multiple income sources change the picture
If your employee or their spouse has other jobs or income, federal income tax withholding may start earlier or the employee may want to adjust their W-4 to avoid owing a large amount at tax time.
Household employers are not required to withhold FIT
Unlike FICA taxes — which are mandatory once you cross the $3,000 household employer threshold for 2026 — federal income tax withholding for household employees is technically voluntary. You only need to withhold FIT if your employee requests it by submitting a W-4. Read more on household employer withholding rules.
The IRS Tax Withholding Estimator can help
If your employee is concerned about having too little or too much withheld, the IRS offers a free Tax Withholding Estimator that helps them determine the right W-4 settings for their situation.
See it in action
Enter your employee's pay rate, filing status, and hours to see a full breakdown of taxes — including when FIT withholding kicks in.
Frequently asked questions
Is $0 federal income tax withholding a payroll error?
Will my nanny still owe federal income tax even if nothing was withheld?
Do I have to withhold federal income tax for my household employee?
How are the FIT thresholds calculated?
If my nanny claims dependents on Form W-4, does the threshold change?
Why is FICA being withheld but federal income tax isn't?
Sources:
- IRS Publication 15-T (Federal Income Tax Withholding Methods)
- IRS Publication 926 (Household Employer's Tax Guide)
- IRS Tax Withholding Estimator
- IRS Topic 756 (Employment Taxes for Household Employees)
- IRS Schedule H (Form 1040)