Income Tax Estimator

This calculator estimates your income tax on regular salary income using the official 2024–25 brackets for the US, UK, India, and Pakistan. Each country's tax system is progressive: different slices of your income are taxed at different rates. The result is your total tax owed, your effective tax rate (total tax ÷ total income), and your take-home pay.

What this does notcover: capital gains, dividends, rental income, freelance/self-employed income, state or local taxes, mandatory social-security contributions (FICA, NI, PF, or equivalents), or deductions and credits that are specific to your situation. The result is a ballpark for salary income only. Use it to plan, not to file. For an actual return, work with a tax professional or use software like TurboTax, HMRC's online filing, or your country's equivalent.

Common misconception: people think being "in the 32% bracket" means 32% of your income goes to tax. It doesn't. Only the slice above the bracket threshold is taxed at 32%. The slices below are taxed at the lower rates of their own brackets.

Worked example (US, 2024 single filer, $100,000 income):

• First $11,600 taxed at 10% = $1,160
• $11,600 to $47,150 taxed at 12% = $4,266
• $47,150 to $100,000 taxed at 22% = $11,627
• Total tax ≈ $17,053
• Effective rate = 17.05%, not 22%

Your "marginal rate" (22% in this case) is the rate on your next dollar of income. Your "effective rate" (17.05%) is what you actually pay across all your income. They are not the same number, and the gap matters when you're comparing job offers or planning a side income.

Your marginal rate is the tax on the next dollar you earn — your top bracket. Your effective rate is the average rate across all your taxable income. In a progressive bracket system, your effective rate is always lower than your marginal rate, because earlier dollars get taxed at lower brackets.

Worked example for a $100,000 US single filer in 2024–25: top bracket is 22% (marginal), but total federal tax is ~$15,600 — an effective rate of 15.6%. The 22% only applies to dollars between $47,150 and $100,000.

Why it matters: deductions reduce taxable income at your marginal rate. A $1,000 deduction saves a 22%-bracket filer $220, not $156. Tax planning decisions almost always operate at the marginal rate, not the effective.

The estimate above is gross income against marginal brackets only. Real tax bills are typically 10–40% lower because of:

• US standard deduction: $14,600 single / $29,200 joint (2024). Itemising replaces this with mortgage interest, SALT cap of $10k, charitable giving, etc.
• Retirement contributions: 401(k), IRA, HSA — up to $23k + $7k + $4,150 individual limits in 2025. Direct reduction in taxable income.
• Child tax credits: $2,000 per qualifying child in the US; varies by country. Credits reduce tax owed dollar-for-dollar, not just taxable income.
• India deductions: Section 80C (₹1.5 lakh — ELSS, PPF, life insurance), 80D (health insurance), HRA (rent), home loan interest under Section 24.
• UK: personal allowance (£12,570, baked into the calculator), pension contributions, charitable Gift Aid.

US state income tax: 7 states have no income tax (TX, FL, WA, NV, SD, WY, AK + partial TN and NH); the rest range 1–13%. California (13.3%) and New York (10.9%) are the highest; most states average 5–7%. Add your state rate as a separate line item on top of the federal estimate.

UK NICs: National Insurance contributions are 8% on earnings between £12,570 and £50,270, then 2% above — separate from income tax. Self-employed pay Class 2 + Class 4 NICs at different rates.

US self-employment tax: sole proprietors and freelancers pay an additional 15.3% on net self-employment income (12.4% Social Security + 2.9% Medicare). Half of this is deductible.