2026 US Federal Income Tax Calculator

Free 2026 federal tax calculator — estimate your tax bracket and see how much 401(k), Traditional IRA, HSA, and student loan interest deductions can save you. Results update instantly as you type.

Standard Deduction 401(k) & IRA HSA Student Loan Interest Single / MFJ

Estimates federal income tax only — excludes FICA payroll tax, state income tax, and credits like the Child Tax Credit. Not tax advice.

1 Inputs

Filing Status

Standard deduction: $16,100

Annual Income · Gross Salary $0

$0$600,000

Retirement Accounts 2026 IRS limits

401(k) Employee Contribution $0

$0Cap $24,500

Traditional IRA Contribution $0

$0Cap $7,500 (under 50)

Catch-up contributions (age 50+) raise these caps — see the deductions guide.

HSA Contribution · Self-only coverage $0

$0Cap $4,400 · $8,750 family

Student Loan Interest Paid $0

$0Cap $2,500

2 Results

Marginal Tax Bracket 10%

Total Tax Saved

Federal Tax Owed

Taxable Income

Tax Bracket Ladder

Income Composition

Deduction Breakdown

Quick Guide to 2026 Tax Deductions

For W-2 employees and self-employed filers planning federal income tax and retirement contributions.

401(k) Contribution Limit

Employee salary deferrals are capped at $24,500 in 2026 ($32,500 with the age-50 catch-up), reducing taxable income dollar for dollar.

Traditional vs Roth IRA

IRA contributions are capped at $7,500 in 2026 ($8,600 age 50+). Traditional IRA contributions can be tax-deductible; Roth IRA contributions are not, but grow tax-free.

HSA Triple Tax Advantage

Contributions are pre-tax, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. 2026 limits: $4,400 self-only, $8,750 family.

Student Loan Interest Deduction

Deduct up to $2,500 of student loan interest paid per year, subject to income phase-outs — no need to itemize to claim it.