Question 1

How does the PayCheckup paycheck calculator work?

Accepted Answer

PayCheckup uses the latest 2026 IRS tax tables, standard deduction amounts, and graduated state income tax brackets to calculate your estimated W-2 take-home pay. It automatically subtracts federal income taxes, FICA withholdings (Social Security and Medicare), and state-specific taxes from your gross salary or hourly wages.

Question 2

What are FICA taxes and how are they calculated?

Accepted Answer

FICA stands for the Federal Insurance Contributions Act. It consists of a 6.2% Social Security tax and a 1.45% Medicare tax. For the 2026 tax year, the Social Security tax is only levied on your first $184,500 of wages, while the Medicare tax applies to all earned wages without a limit. An additional 0.9% Medicare tax is applied to income exceeding $200,000 for single filers or $250,000 for married couples.

Question 3

How do pre-tax deductions impact my net take-home pay?

Accepted Answer

Pre-tax deductions (like traditional 401k/403b retirement plans or health insurance premiums under a Section 125 plan) are subtracted from your gross wages before calculating federal and state income taxes. This lowers your taxable income, saving you money on income taxes. Note that while retirement contributions do not reduce FICA taxes, qualified healthcare premiums reduce both income taxes and FICA taxes.

Question 4

What is the difference between standard deductions and personal exemptions?

Accepted Answer

The standard deduction is a fixed amount that reduces your taxable income based on your filing status (Single, Married Joint, or Head of Household). Some states also offer personal exemptions, which are flat deductions allowed per taxpayer or dependent. Some states (like Wisconsin) use a sliding-scale standard deduction that phases out as your income increases.

Question 5

Does PayCheckup calculate local or municipal income taxes?

Accepted Answer

Yes, where applicable. For states with local income tax rates (such as Pennsylvania or Ohio), the calculator incorporates these rates to give you a more accurate net paycheck estimate. For states like Wisconsin, Washington, or Texas that prohibit local wage taxes, the local withholding remains $0.00.

Question 6

How often are the tax tables and state tax brackets updated on PayCheckup?

Accepted Answer

Our mathematical engine is continuously audited and updated to match the latest active tax tables released by the IRS and individual state Departments of Revenue. All calculations are currently configured to reflect the 2026 tax year guidelines.

Question 7

Why does my actual paycheck differ slightly from the calculator's estimate?

Accepted Answer

Slight variations can occur due to local county/city tax rates, specific employer payroll cycles (such as semi-monthly vs. bi-weekly rounding), pre-tax health insurance premiums, post-tax deductions (like garnishments or union dues), or extra tax withholdings selected on your Form W-4.

Question 8

What is the difference between a W-2 employee and a 1099 contractor paycheck?

Accepted Answer

W-2 employees have taxes withheld by their employer, and the employer pays half of their FICA taxes. 1099 independent contractors do not have taxes withheld and must pay Self-Employment Tax (SECA), which equals 15.3% (combining both employee and employer portions of FICA) to fund Social Security and Medicare.

Frequently Asked Questions

General Payroll & Tax Withholding Questions