1. What is a capital gain?
A capital gain is the profit from selling a capital asset — shares, mutual funds, property, gold, or any investment held for the long term. The gain is the difference between what you sold it for and what you paid, adjusted for expenses and (in some cases) inflation.
Capital gain = Sale price − Sell expenses − Cost of acquisition
Cost of acquisition = purchase price + buy-side expenses + capital improvements. For LTCG on eligible assets, this cost may be indexed before subtracting.
2. STCG vs LTCG: the holding period test
The moment you cross the holding-period threshold, your gain changes from short-term to long-term — and so does your tax. Thresholds differ by asset class:
| Asset class | Long-term after | STCG rate | LTCG rate |
|---|---|---|---|
| Listed equity shares / equity MF | 12 months | 15% | 10% above ₹1L |
| Debt mutual funds (post Apr 2023) | All gains are STCG | Slab rate | — |
| Real estate (property) | 24 months | Slab rate | 12.5% (no index) or 20% (with index) |
| Gold / Gold ETFs | 24 months | Slab rate | 12.5% (no index) or 20% (with index) |
| Unlisted shares | 24 months | Slab rate | 12.5% |
| Other assets | 36 months | Slab rate | 12.5% |
💡 The holding period is measured from the date of purchase to the date of sale. In India, the period is calculated on a calendar basis — 12 months from the purchase date, not the financial year.
3. Indexation: your most powerful tool for property and gold
Indexation inflates your purchase cost using the Cost Inflation Index (CII), which tracks inflation from a base of 100 in FY 2001-02. The formula:
Indexed cost = Cost × (CII in year of sale ÷ CII in year of purchase)
If you bought a house in FY 2010-11 (CII 167) for ₹50 lakh and sold it in FY 2024-25 (CII 363), your indexed cost is ₹1.09 crore — more than double the original. That drastically reduces your taxable gain.
⚠️ Following the July 2024 amendments, property and gold acquired before 23 July 2024 can use either the 12.5% rate without indexation or the 20% rate with indexation — whichever gives a lower tax. Post-July-2024 acquisitions use 12.5% without indexation.
4. Exemptions that can eliminate your tax
For property, two exemptions can reduce your LTCG to zero:
- Section 54: Reinvest the LTCG in a residential house (bought within 1 year before or 2 years after sale, or constructed within 3 years). Up to ₹10 crore of gains exempt.
- Section 54F: If you sell any asset other than a house and reinvest the net consideration in a residential house, the gain is exempt proportionally.
For equity and equity MF, the ₹1 lakh annual LTCG exemption is automatic — you don't need to reinvest. Booking ₹1 lakh of LTCG every financial year resets the exemption without paying a rupee of tax.
✓ Booking ₹1 lakh of LTCG every financial year is one of the simplest tax-free strategies in India. Over 10 years, that's ₹10 lakh of gains you never pay tax on.
5. Loss harvesting: turning a down year into a tax benefit
Capital losses can be set off against capital gains:
- Short-term capital loss (STCL): Can offset both STCG and LTCG.
- Long-term capital loss (LTCL): Can offset only LTCG.
- Carry-forward: Unused losses can be carried forward for 8 years — but only if you file your return on time.
A common strategy: in a year when you're booking large gains, also sell a few losing positions to offset them. You can buy them back after a short gap if you still believe in them.
6. A worked example: equity LTCG
You invested ₹5,00,000 in an equity mutual fund and sold after 18 months for ₹9,00,000.
- Sale price: ₹9,00,000
- Sell-side expenses: ₹5,000
- Net consideration: ₹8,95,000
- Cost of acquisition: ₹5,00,000 (no indexation for equity)
- Gross LTCG: ₹3,95,000
- Less ₹1L exemption: ₹2,95,000 taxable
- LTCG tax at 10%: ₹29,500
- Net gain: ₹3,65,500
- Effective rate: 7.5% of the gain
Compare to STCG (had you sold at 11 months): ₹3,95,000 × 15% = ₹59,250 tax. Holding just one extra month saved you nearly ₹30,000.
7. A worked example: property LTCG
You bought a flat in FY 2015-16 (CII 254) for ₹60,00,000 and sold in FY 2024-25 (CII 363) for ₹1,20,00,000. Sell expenses were ₹6,00,000.
Option A — 12.5% without indexation:
- Net consideration: ₹1,14,00,000
- Cost: ₹60,00,000
- LTCG: ₹54,00,000
- Tax @ 12.5%: ₹6,75,000
Option B — 20% with indexation:
- Indexed cost: ₹60,00,000 × (363 ÷ 254) = ₹85,74,803
- LTCG: ₹28,25,197
- Tax @ 20%: ₹5,65,039
In this case, indexation saves you roughly ₹1,10,000. But in shorter holding periods with high appreciation, the 12.5% rate without indexation often wins. Always compute both.
8. Common mistakes to avoid
- Selling one day before the holding period threshold: Always check the exact date. One day can cost lakhs.
- Ignoring indexation on property: Most sellers default to 12.5% without indexation without checking whether 20% with indexation would be lower.
- Forgetting the ₹1 lakh LTCG exemption: It's per financial year across all equity holdings. Use it every year.
- Not reporting losses: Capital losses must be reported in your ITR to be carried forward. Silent losses are wasted losses.
- Mixing up holding periods on SIP units: Each SIP instalment has its own holding period. Selling early units of a long-running SIP may trigger STCG.
- Ignoring Section 54/54F: If you're selling property and planning to buy another house, the exemption can be massive.
- Assuming debt MF is tax-efficient: Post-April 2023, all debt MF gains are taxed at your slab rate. No LTCG benefit.
9. Final thoughts
Capital gains tax is not an unavoidable cost — it's a number you can influence. Holding periods, asset choice, indexation, exemptions and loss harvesting all shift the outcome in your favour when planned in advance.
Use this calculator before you sell. Knowing whether you're booking STCG or LTCG, and how much tax you'll actually pay, turns a stressful decision into a manageable one.
