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Tax calculators · United States
Federal income tax, capital gains, take-home pay and retirement-account tax savings, using the 2026 IRS figures.
Income tax & paycheck
Federal income tax by bracket, and your take-home pay after payroll and state taxes.
Estimate your 2026 federal income tax, marginal and effective rate by filing status.
Turn gross salary into net pay after federal tax, FICA and state tax.
Investment taxes
Short-term and long-term capital gains rates, including the 3.8% net investment income tax.
Short-term and long-term capital gains tax plus the 3.8% NIIT on stock sales.
Retirement accounts
Compare 401(k), Traditional and Roth contributions using the 2026 limits.
Project your 401(k) balance with the 2026 limits, employer match and catch-up.
Compare after-tax value of Roth and Traditional contributions.
Korea-specific tools
Overseas-stock capital gains tax, financial income taxation, ISA, pension savings and IRP credits, and other rules that apply to Korean taxpayers. Amounts are in won by default.
Korea: the 2.5M won deduction and loss netting before year-end.
Korea: the 20M won comprehensive-tax line and health premium impact.
Korea: separate taxation of high-dividend company payouts.
Korea: taxable income, bracket and tax owed.
Korea: gain, deductions and capital gains tax on a home sale.
Korea: gift deductions and gift tax on stocks given to children.
Korea: taxable, ISA, pension savings and IRP side by side.
Korea: ISA tax-free limit, separate taxation and after-tax result.
Korea: after-tax return of domestic vs US-listed ETFs.
Korea: year-end tax credit for pension savings and IRP deposits.
2026 tax year at a glance
Standard deduction
Single / married filing jointly. Head of household: $24,150.
Top bracket
Single filers. Married filing jointly: over $768,700.
401(k) limit
Plus $8,000 catch-up at 50+ ($11,250 at ages 60-63). IRA limit: $7,500.
Social Security wage base
6.2% employee share up to this amount, plus 1.45% Medicare on all wages.
Source: IRS Rev. Proc. 2025-32 and IR-2025-111. Estimates for education only, not tax advice.