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Tax & GST Calculators

Pay exactly what you owe
not a rupee more

Income tax, GST, HRA, capital gains, TDS and advance tax. every Indian tax calculation you need, in one place. Updated for Budget 2026 and current FY rates. Free, instant, and 100% private.

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FY 2026 - 2027
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All tax & GST calculators

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Tax & GST Calculators for India - Why Accuracy Matters

Taxes are the single largest deduction from most Indians' income, yet they are also one of the least understood. A salaried professional in the ₹15–20L income bracket can save ₹50,000–₹1.5L annually simply by choosing the right tax regime, maximising legitimate deductions, and claiming every exemption they are entitled to. A business owner who misunderstands GST input tax credit or gets advance tax instalments wrong faces penalties on top of the tax due. These calculators eliminate guesswork and help you pay exactly what you owe, not a rupee more, never a rupee less.

India's tax system changed significantly with Budget 2024, new default regime, revised LTCG rates on equity (12.5% from 10%), higher STCG rates (20% from 15%), increased capital gains exemption (₹1.25L from ₹1L), and revised tax slabs under the new regime. All calculators on this page reflect the latest FY 2026 - 2027 rules, so your numbers are always accurate.

How to use these calculators together

Tax planning is most effective when done holistically rather than one calculator at a time. Here is the recommended sequence for a complete FY 2026 - 2027 tax planning exercise, whether you are salaried, self-employed, or a business owner:

1
Start with Income Tax Calculator, pick your regime first
Before any other tax decision, use the Income Tax Calculator to compare your liability under the old and new regime with your actual deductions filled in. The new regime has lower slab rates but eliminates most deductions (80C, 80D, HRA, home loan interest). For most people with home loans or high 80C investments, the old regime still wins. Calculate both before your employer asks for your declaration in April.
2
Claim every rupee of HRA exemption you are entitled to
HRA is one of the most underutilised exemptions. The HRA Exemption Calculator evaluates the minimum of three conditions: (a) actual HRA received, (b) rent paid minus 10% of basic salary, and (c) 50% or 40% of basic for metro/non-metro. Many employees only know they 'get some HRA exemption', this calculator shows the exact exempt amount and the taxable remainder so you can plan rent receipts correctly.
3
Model capital gains on any investment you plan to sell
Before redeeming mutual funds, selling shares, or disposing of property, use the Capital Gains Tax Calculator to know your tax liability. Budget 2024 changed equity LTCG from 10% to 12.5% and STCG from 15% to 20%, significant increases. The calculator handles all asset classes: equity, debt MFs, gold ETFs, and property, with the correct holding period thresholds and indexation rules for each.
4
Check TDS on every payment you receive or make
TDS is deducted on salary, FD interest, rent above ₹50K/month, professional fees, contractor payments, and property purchases. The TDS Calculator covers over 20 sections with current rates. If TDS has already been deducted on income you receive, knowing the exact amount helps you reconcile Form 26AS and avoid surprise tax demands during filing.
5
For GST, use the calculator before every invoice
The GST Calculator handles forward calculation (add GST to base price) and reverse calculation (extract GST from a GST-inclusive amount) across all four slabs. It also splits CGST/SGST for intra-state and IGST for inter-state supplies, essential for correct invoice preparation. Businesses filing GSTR-1 monthly can use this to cross-check invoice values before submission.
6
Set advance tax reminders if your tax liability exceeds ₹10,000
If your estimated annual tax liability after TDS credit exceeds ₹10,000, you must pay advance tax in four instalments (15% by June 15, 45% by September 15, 75% by December 15, 100% by March 15). Missing or underpaying any instalment attracts interest under Section 234B and 234C at 1% per month. The Advance Tax Calculator generates your exact quarterly schedule, take a screenshot and set calendar reminders.

Key tax principles every Indian taxpayer must know

These calculators encode the rules, but understanding the principles behind them helps you make better decisions year-round, not just at filing time:

⚖️Old vs new regime: the break-even deduction

The new regime makes sense if your total deductions (80C + 80D + HRA + home loan interest + NPS) are below approximately ₹3.75L for income in the ₹15–20L range. Above that, the old regime almost always saves more. Calculate this every April, the answer changes as your income, rent, and investments change.

🌾LTCG harvesting: the ₹1.25L annual opportunity

Up to ₹1.25L in equity LTCG per financial year is tax-free. If you have unrealised long-term gains in stocks or equity MFs, consider harvesting up to ₹1.25L every March by selling and repurchasing, resetting your cost basis to a higher level. Done annually, this can save ₹15,000–₹20,000/year in tax on large portfolios, completely legally.

🏠HRA + home loan: both deductions are claimable together

A widespread misconception: you cannot claim both HRA exemption and home loan interest deduction simultaneously. This is incorrect. You can claim both if you live in a rented property in one city and own a home loan property in another city, or if the loan property is under construction. The Income Tax Calculator models both together correctly.

📄GST input tax credit: don't leave money on the table

Registered GST businesses can offset output GST liability against input GST paid on purchases (ITC). Many small businesses don't claim all eligible ITC, missing the credit on capital goods, professional services, or mixed-supply purchases. For a business paying ₹5L in GST annually, unclaimed ITC is a direct cash drain. Always reconcile GSTR-2B before filing GSTR-3B.

✂️TDS is not your final tax — reconcile every quarter

TDS deducted by your employer, bank, or clients appears in Form 26AS and AIS. If TDS exceeds your actual tax liability, you get a refund (process it via ITR). If it falls short, common for freelancers with multiple clients or those with capital gains, you owe the balance, potentially with Section 234B interest. Reconcile quarterly, not just at filing.

📅Advance tax default is expensive — 1% per month

Section 234B charges 1% simple interest per month on any advance tax shortfall (paid less than 90% of assessed tax). Section 234C charges 1% per month on each quarterly shortfall. On a ₹2L advance tax liability, a full-year 234B default costs ₹24,000 in interest alone, more than most people earn in a savings account on that amount. The Advance Tax Calculator prevents this entirely.

Tax & GST calculator FAQ

Which tax regime is better for me: old or new?
It depends on your total deductions. The new regime has lower slab rates: 0% up to ₹3L, 5% from ₹3–7L, 10% from ₹7–10L, 15% from ₹10–12L, 20% from ₹12–15L, and 30% above ₹15L (with rebate making income up to ₹7L effectively tax-free). However, it disallows most deductions: no 80C (₹1.5L), no 80D (₹25K–₹75K), no HRA exemption, no home loan interest deduction (₹2L), no NPS extra deduction (₹50K). If your deductions exceed roughly ₹3.5–4L, the old regime typically saves more. Use our Income Tax Calculator to enter your exact numbers and see the precise difference — the answer is different for every individual.
What are the capital gains tax rates after Budget 2024?
Budget 2024 significantly revised capital gains rates effective July 23, 2024. For equity and equity MFs: STCG (held < 12 months) is now taxed at 20% (up from 15%), and LTCG (held ≥ 12 months) at 12.5% with a ₹1.25L annual exemption (up from ₹1L, rate up from 10%). For debt mutual funds purchased after April 1, 2023: gains are added to income and taxed at slab rate, regardless of holding period (no LTCG benefit). For property: LTCG is 12.5% without indexation (changed from 20% with indexation — a mixed impact depending on holding period and inflation). For gold: LTCG (held ≥ 24 months) at 12.5% without indexation. The Capital Gains Tax Calculator applies the correct rules for each asset class automatically.
How is GST calculated on an invoice in India?
GST calculation works in two directions. Forward (exclusive): if the base price is ₹10,000 and GST is 18%, the GST amount is ₹1,800 and the invoice total is ₹11,800. Reverse (inclusive): if the GST-inclusive price is ₹11,800 and the rate is 18%, the base price is ₹11,800 / 1.18 = ₹10,000 and GST is ₹1,800. For intra-state supplies, GST is split equally between CGST (9%) and SGST (9%). For inter-state supplies, the entire 18% is charged as IGST. The four main GST slabs are 5%, 12%, 18%, and 28% — with some goods at 0% (essential items) and a few at 3% (gold, silver) and 0.25% (rough diamonds). Our GST Calculator handles all slabs and supply types.
Who needs to pay advance tax and when?
Any individual or business whose total estimated tax liability for the year (after TDS credit) exceeds ₹10,000 must pay advance tax. This includes salaried individuals with significant interest income, capital gains, rental income, or freelance income. Senior citizens (above 60) who do not have business income are exempt. The payment schedule for FY 2024–25: at least 15% by June 15, 2024; 45% by September 15, 2024; 75% by December 15, 2024; and 100% by March 15, 2025. Shortfalls attract Section 234B and 234C interest at 1% per month. The Advance Tax Calculator generates your exact quarterly amounts based on your estimated annual income.
What is TDS and how do I check how much has been deducted?
TDS (Tax Deducted at Source) is tax deducted by the payer at the time of payment — your employer deducts TDS from salary, your bank deducts TDS on FD interest above ₹40,000/year (₹50K for senior citizens), and property buyers deduct 1% TDS on property purchases above ₹50L under Section 194IA. Every TDS deduction is reported to the Income Tax Department and appears in your Form 26AS (accessible via the IT portal or your bank's net banking) and Annual Information Statement (AIS). If total TDS exceeds your tax liability, you claim a refund in your ITR. If TDS is less than your liability, you pay the balance. Always reconcile 26AS before filing.