Frequently Asked Questions

Most W-2 paychecks include federal income tax, state income tax (if applicable), Social Security (6.2% up to the wage base), and Medicare (1.45%, plus 0.9% on high earners). Your employer may also withhold benefits and retirement contributions.

As of 2026, Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming do not tax wage income at the state level. You still owe federal taxes and FICA in those states.

Your marginal rate is the tax on your next dollar of income. Your effective rate is total tax divided by gross income. Effective rate is usually lower because lower brackets are taxed at lower rates.

Filing status changes your standard deduction and tax brackets. Married filing jointly typically has wider brackets than single filers, which can reduce tax on the same household income.

PaycheckScope provides estimates based on current tax tables and standard assumptions. Actual paycheck withholding depends on your W-4, pre-tax deductions, local taxes, and employer payroll settings.

Recalculate when your salary, state, filing status, or tax year changes. Review again after major tax law updates, usually announced annually for the upcoming tax year.