Tax Calculator
Calculate your income tax instantly for India (Old/New Regime, FY 2024-25) and USA (2024 Federal). Get slab-wise breakdown, effective rate, and TDS estimate.
โ Free ยท No sign-up ยท Works in browserLast updated: April 2026 ยท Tested on Chrome, Firefox, Edge, SafariUse Tax Calculator
Includes โน50,000 standard deduction. Old regime applies basic exemption by age group. Surcharge and 4% cess are applied as per IT rules.
How to Use Tax Calculator
Select your country โ India ๐ฎ๐ณ for Indian income tax or USA ๐บ๐ธ for US federal tax. The form will update to show the relevant options for each tax system.
Enter your annual gross income in the input field. For India, enter the total annual CTC or income before any deductions. For the US, enter your gross annual income.
India users: choose your Tax Regime (New or Old) and your Age Group (Below 60, Senior 60โ80, or Super Senior 80+). US users: choose your Filing Status (Single or Married Filing Jointly).
Click "Calculate Tax" to instantly see your Total Tax Payable, Effective Rate, Monthly TDS estimate, and Take-Home Income in four summary cards alongside an animated donut chart.
Scroll down to review the full slab-wise or bracket-wise tax breakdown with progress bars showing your tax exposure at each rate. India users also see a side-by-side Old vs New Regime comparison highlighting which option saves more money.
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About Tax Calculator
Tax planning is one of the most impactful financial decisions you can make every year, yet most people either overpay through ignorance or underpay due to guesswork. The AWE-OS Tax Calculator gives you an instant, accurate breakdown of your income tax liability for India (Old and New Regime, FY 2024-25) and the United States (2024 Federal Tax), completely free and with no sign-up required.
For Indian taxpayers, the tool applies the correct slab rates for both regimes, accounts for the โน50,000 standard deduction, adjusts basic exemption limits for senior citizens (โน3 lakh) and super senior citizens (โน5 lakh under old regime), calculates surcharge on high incomes, adds the 4% Health & Education Cess, and applies the Rebate u/s 87A for eligible income levels. The Old vs New Regime comparison is computed simultaneously so you can see exactly which option saves you more money.
For US filers, the tool calculates 2024 federal income tax using the latest IRS brackets for Single and Married Filing Jointly statuses, after applying the standard deduction. The bracket-by-bracket breakdown shows precisely how much tax is owed at each marginal rate, so you understand your effective rate versus your marginal rate. All calculations run entirely in your browser โ no data leaves your device.
Honest limitation: Covers standard salary income and common deductions โ complex cases (capital gains, foreign income, business income) need a professional.
Tips & Best Practices for Tax Calculator
- ๐กRun both Old Regime and New Regime calculations with your actual deductions before making your regime declaration to your employer โ this takes 5 minutes with the calculator and can save thousands of rupees by choosing correctly.
- ๐กFor the Old Regime, ensure you include all eligible deductions: Standard Deduction (โน50,000 for salaried), HRA exemption, 80C investments (PPF, ELSS, LIC, home loan principal), 80D health insurance, and Section 24(b) home loan interest up to โน2 lakh.
- ๐กIf your total Old Regime deductions are below โน3.5 lakh (approximate break-even for a โน15 lakh income), the New Regime is likely more beneficial โ the exact break-even depends on your specific income level.
- ๐กFor freelancers and self-employed professionals, include business expenses allowed under Section 44ADA (presumptive taxation scheme at 50% of gross receipts as taxable income) before calculating tax.
- ๐กPay advance tax by December 15 and March 15 if your net tax liability exceeds โน10,000 for the year โ failing to pay advance tax on time attracts interest under Sections 234B and 234C at 1% per month.
- ๐กUse the calculator at the start of the financial year (April) to plan your investment declarations to HR rather than scrambling in February when most employers close the investment declaration cycle.
Common Mistakes to Avoid with Tax Calculator
- โClaiming HRA exemption under the Old Regime without keeping rent receipts and the landlord's PAN (for annual rent above โน1 lakh) โ the HRA exemption is subject to employer and ITD scrutiny, and missing documents can lead to tax demand notices.
- โForgetting to include all sources of income โ interest from savings accounts (taxable above โน10,000 per year under Section 80TTA), fixed deposit interest, rental income, and capital gains must all be included in gross income.
- โAssuming you can switch between New and Old Regime freely every year โ salaried individuals can switch regime every year when filing ITR; business income earners can switch only once.
- โMissing the Section 87A rebate โ if your taxable income (after all deductions under Old Regime) is at or below โน5 lakh, or below โน7 lakh under the New Regime, the full tax liability is rebated to zero. Many taxpayers miss this.
- โNot accounting for surcharge โ the calculator includes surcharge, but many taxpayers with incomes approaching โน50 lakh or โน1 crore are unaware of the significant additional tax liability from surcharge and marginal relief.
- โTreating the calculator's output as a final tax return โ the calculator gives a reliable estimate, but your actual ITR may differ based on exact deduction documentation, advance tax already paid, TDS credits, and any carryforward losses.
Frequently Asked Questions
Which is better โ the Old Regime or New Regime for FY 2024-25?
Does this calculator include all deductions like 80C, HRA, and home loan interest?
What is Rebate u/s 87A?
What is surcharge and when does it apply?
What is the difference between marginal tax rate and effective tax rate?
Does this tool calculate state tax for the US?
Built & maintained by Team AWE-OS
This tool is developed in-house and manually re-tested on Chrome, Firefox, Edge, and Safari after every update, following our tool testing policy. Found a bug? Tell us โ fixes are usually shipped within days.