W-4 Calculator & Tax Estimator

Stop wondering what you’ll owe. This W-4 calculator helps you estimate paycheck withholding, see how much goes to taxes, and adjust smarter. Updated for 2025 IRS guidance. What It Does • Enter your income, dependents, and filing status • Instantly see your paycheck breakdown (net vs. gross) • Understand your federal withholding • Plan for refunds or avoid surprise bills Bonus Features • Tax Day Calendar: Never miss a quarterly deadline • Withholding Alert: Flag under- or over-withholding automatically • Paycheck Simulator: See the effect of extra deductions or income changes Why It Works • Accurate IRS formulas • Visual breakdown of each pay stub • Privacy-first: no login required Why You’ll Keep It • Plan your next raise • File confidently • Share with friends before tax season ends