Income Tax Calculator
Free income tax calculator for India old/new regimes, US federal 2025 brackets, and UK HMRC tax. Get slab-wise breakdown, net income, effective rate, and charts.
About This Calculator
The Income Tax Calculator is a region-aware tool that computes your income tax liability based on your geographic location. It automatically detects whether you are in India, the United States, or the United Kingdom and applies the correct tax rules, brackets, deductions, and currency symbols.
India Tax System (FY 2025-26)
India offers two tax regimes. The new tax regime (default since FY 2023-24) has lower rates with limited deductions: standard deduction of ₹75,000 and employer NPS contribution under 80CCD(2). Income up to ₹12 lakh is effectively tax-free due to the enhanced Section 87A rebate of ₹60,000. The old tax regime has higher rates but allows comprehensive deductions: Section 80C (up to ₹1.5L), 80D (health insurance), HRA exemption, home loan interest under Section 24 (up to ₹2L), LTA, and standard deduction of ₹50,000. A 4% Health and Education Cess applies to both regimes.
US Federal Tax System (2025)
The US federal income tax uses a progressive seven-bracket system ranging from 10% to 37%. The standard deduction for 2025 is $15,000 for single filers and $30,000 for married couples filing jointly. The calculator supports both single and married filing jointly statuses. Taxable income is calculated after applying the standard deduction, and marginal rates apply to each bracket.
UK Tax System (2025-26)
The UK uses a three-band system: 0% on the personal allowance (£12,570), 20% basic rate (£12,571-£50,270), 40% higher rate (£50,271-£125,140), and 45% additional rate (above £125,140). The personal allowance tapers by £1 for every £2 earned above £100,000, creating a 60% effective marginal rate in the taper band. Pension contributions reduce your taxable income and are factored into the calculation.
Key Features
- Auto-detects region (IN/US/UK) via browser timezone
- India: both old and new regime calculation with Section 87A rebate and 4% cess
- US: single and married filing joint status with 2025 brackets and standard deduction
- UK: personal allowance taper, pension contributions, all four tax bands
- Slab-by-slab tax breakdown with detailed breakdown table
- Bar and pie charts for visual income distribution analysis
- Shareable calculation links via URL parameters
Frequently Asked Questions
How is income tax calculated in India under the new regime for FY 2025-26?
Under the new tax regime (FY 2025-26, AY 2026-27), the tax slabs are: 0-₹4L (0%), ₹4L-₹8L (5%), ₹8L-₹12L (10%), ₹12L-₹16L (15%), ₹16L-₹20L (20%), ₹20L-₹24L (25%), and above ₹24L (30%). A standard deduction of ₹75,000 applies for salaried employees. Section 87A rebate makes income up to ₹12L effectively tax-free. A 4% Health and Education Cess is added to the tax amount.
What are the US federal income tax brackets for 2025?
For tax year 2025, the US federal income tax brackets for single filers are: 10% ($0-$11,925), 12% ($11,926-$48,475), 22% ($48,476-$103,350), 24% ($103,351-$197,300), 32% ($197,301-$250,525), 35% ($250,526-$626,350), and 37% (over $626,350). The standard deduction for single filers is $15,000 and for married filing jointly is $30,000.
How does the UK income tax system work for 2025-26?
For the 2025-26 tax year, UK income tax rates are: 0% on the personal allowance (up to £12,570), 20% basic rate (£12,571-£50,270), 40% higher rate (£50,271-£125,140), and 45% additional rate (above £125,140). The personal allowance reduces by £1 for every £2 earned above £100,000. Pension contributions and other reliefs can reduce taxable income.
Should I choose the old or new tax regime in India?
The old tax regime has higher tax rates but allows full deductions (80C up to ₹1.5L, 80D, HRA, home loan interest up to ₹2L, LTA, etc.) with a standard deduction of ₹50,000. The new regime has lower tax rates and a higher exemption limit of ₹4L, but only allows limited deductions (standard deduction of ₹75,000, employer NPS, family pension). The new regime is default and generally beneficial for those without significant investments or housing loans.
What is the Section 87A rebate in India?
Section 87A provides a tax rebate for resident individuals with income below certain thresholds. Under the old regime, a rebate of up to ₹12,500 is available if taxable income does not exceed ₹5 lakh, making income up to ₹5 lakh tax-free. Under the new regime (FY 2025-26), a rebate of up to ₹60,000 is available for taxable income up to ₹12 lakh, effectively making ₹12 lakh income tax-free.
What is the standard deduction for salaried employees in India?
For FY 2025-26, the standard deduction for salaried employees is ₹75,000 under the new tax regime (increased from ₹50,000 in Budget 2025). Under the old tax regime, the standard deduction remains ₹50,000. The standard deduction is automatically applied to reduce taxable salary income.
How does the US standard deduction work and what is it for 2025?
The standard deduction reduces your taxable income before tax brackets are applied. For 2025, the standard deduction is $15,000 for single filers and $30,000 for married couples filing jointly. Taxpayers can choose between the standard deduction and itemizing deductions (mortgage interest, state taxes, charitable contributions, etc.). Most taxpayers take the standard deduction as it is simpler and often higher.
What happens to the UK personal allowance for high earners?
The UK personal allowance of £12,570 (2025-26) is gradually reduced for high earners. For every £2 of adjusted net income above £100,000, the personal allowance is reduced by £1. This means the personal allowance is completely eliminated when income reaches £125,140. This creates an effective marginal tax rate of 60% on income between £100,000 and £125,140.