Changes at work
A new job, raise, bonus, second job, or shift in pay frequency can change what makes sense on your W-4.
2026 federal withholding tool
W-4 withholding calculator.
Use this estimate to see whether your federal paycheck withholding appears to be on track, then decide whether a closer W-4 review would help.
Get a W-4 paycheck checkupStart with an estimate
Bring your paycheck details into focus.
Enter the details that apply to you, including your pay, withholding, dependents, other income, and common payroll deductions. The calculator gives you an educational federal estimate and identifies the W-4 steps that may deserve attention.
It is not a final tax return calculation and does not cover state or local income tax. If your income, household, or work situation has changed, a personal review can help you make the next decision with better context.
When to review
Life and income changes can shift your withholding.
Changes at home
Marriage, dependents, divorce, or a change in household income can affect the picture behind each paycheck.
Income beyond your paycheck
Freelance work, investment income, retirement income, or other income may call for a closer withholding conversation.
Want help applying the estimate to your situation?
JC Tax Services can review the information behind your paycheck and help you understand the W-4 questions worth considering before you update it with your employer.
Request a W-4 paycheck checkup