What Is STCG and When Does It Apply?
Short-Term Capital Gains (STCG) on listed equity shares arise when you sell stocks that you have held for 12 months or less. Under the current tax framework effective from FY 2024-25, STCG on listed equities where STT is paid is taxed at a flat rate of 20% under Section 111A of the Income Tax Act.
This 20% rate was revised upward from the earlier rate of 15% by the Finance Act 2024. The increase of 5 percentage points was one of the significant changes in the 2024 Budget that affected equity investors.
Section 111A specifically applies when all of the following conditions are met: - The asset is an equity share in a company or a unit of an equity-oriented mutual fund or a unit of a business trust - The shares are listed on a recognized stock exchange in India - Securities Transaction Tax (STT) is paid at the time of sale (and purchase, in the case of equity shares) - The holding period is 12 months or less
If any of these conditions are not met, the gain is taxed as regular STCG at your applicable income tax slab rate, which could be higher or lower than 20%. For example, STCG on unlisted shares is taxed at your slab rate, not the flat 20%.
How to Calculate STCG on Stocks
Calculating STCG involves a straightforward formula, but accuracy requires attention to several details.
STCG = Sale Price - Cost of Acquisition - Expenses on Transfer
Let us break down each component:
Sale Price is the total amount received on selling the shares. This is the market price at which the sell order was executed, multiplied by the number of shares sold.
Cost of Acquisition is the price at which you originally purchased the shares, plus any brokerage and transaction charges paid at the time of purchase. Under the FIFO method, if you have multiple lots, the cost of the earliest purchased shares is used first.
Expenses on Transfer include the brokerage, STT (seller side), exchange transaction charges, GST on brokerage, SEBI turnover charges, and stamp duty paid at the time of sale.
Important note: While STT is an expense incurred during the transaction, it is not deductible from the sale price for computing capital gains. STT is separately allowed as a deduction only if the shares are held as stock-in-trade (business income). For capital gains computation, STT paid is not deducted.
However, brokerage charges paid on both purchase and sale can be included in the cost of acquisition and expenses on transfer respectively. Most brokers today charge flat fees (like Rs 20 per order), so the impact is minimal for large transactions but can be meaningful for small trades.
STCG Calculation Example with Real Numbers
Let us walk through a detailed example to make this concrete.
Scenario: Priya bought 200 shares of Infosys at Rs 1,500 per share on 10th July 2025 through Zerodha. She sells all 200 shares at Rs 1,750 per share on 15th December 2025.
Purchase details: - Purchase price: 200 x Rs 1,500 = Rs 3,00,000 - Brokerage (buy): Rs 20 (flat fee) - Total cost of acquisition: Rs 3,00,020
Sale details: - Sale price: 200 x Rs 1,750 = Rs 3,50,000 - Brokerage (sell): Rs 20 - Other charges (exchange charges, GST, SEBI fees): approximately Rs 35 - Total expenses on transfer: Rs 55
STCG Calculation: - STCG = Rs 3,50,000 - Rs 3,00,020 - Rs 55 = Rs 49,925 - Tax at 20% = Rs 9,985 - Health and education cess at 4% = Rs 399 - Total tax payable = Rs 10,384
Holding period: 10th July to 15th December = approximately 5 months (well within the 12-month STCG limit)
If Priya had waited until 11th July 2026 (more than 12 months), the same Rs 49,925 gain would be LTCG. After the Rs 1.25 lakh exemption, the entire gain would be tax-free since it is below Rs 1.25 lakh. She would save the entire Rs 10,384 in tax.
STCG with Multiple Lots (FIFO Method)
Real-world STCG calculations become more complex when you have purchased the same stock on multiple dates. India mandates the FIFO (First In, First Out) method, meaning the shares purchased first are deemed sold first.
Example: Rahul made the following purchases of HDFC Bank shares: - Lot 1: 100 shares at Rs 1,600 on 1st April 2025 - Lot 2: 100 shares at Rs 1,650 on 1st July 2025 - Lot 3: 100 shares at Rs 1,700 on 1st October 2025
On 15th November 2025, Rahul sells 150 shares at Rs 1,800 each.
Under FIFO, the 150 shares sold come from: - 100 shares from Lot 1 (cost Rs 1,600 each) — holding period: 7.5 months (STCG) - 50 shares from Lot 2 (cost Rs 1,650 each) — holding period: 4.5 months (STCG)
STCG from Lot 1: 100 x (Rs 1,800 - Rs 1,600) = Rs 20,000 STCG from Lot 2: 50 x (Rs 1,800 - Rs 1,650) = Rs 7,500 Total STCG: Rs 27,500 Tax at 20%: Rs 5,500
The remaining 50 shares from Lot 2 and all 100 shares from Lot 3 remain in Rahul's portfolio. If he later sells these after 12 months from their respective purchase dates, those gains would be LTCG. FIFO ensures that the holding period is tracked per lot, not averaged across all purchases.
Surcharge and Cess on STCG
The headline STCG rate of 20% is the base rate. The actual tax you pay may be higher due to surcharge and cess.
Health and Education Cess is universally applicable at 4% on the total tax amount (including surcharge). This means the minimum effective STCG rate is 20.8% (20% plus 4% cess on 20%).
Surcharge applies based on your total income for the year (including salary, business income, and capital gains combined): - Total income up to Rs 50 lakh: No surcharge. Effective STCG rate = 20.8% - Rs 50 lakh to Rs 1 crore: 10% surcharge. Effective STCG rate = 22.88% - Above Rs 1 crore: 15% surcharge. Effective STCG rate = 23.92%
For capital gains under Section 111A, the maximum surcharge is capped at 15% regardless of income level. This means even if your income exceeds Rs 5 crore (where the normal surcharge rate is 37%), the surcharge on STCG is capped at 15%.
Marginal relief is available when your income slightly exceeds a surcharge threshold. If the additional tax due to surcharge exceeds the additional income above the threshold, the surcharge is restricted so that your post-tax income does not decrease.
For most retail investors with total income below Rs 50 lakh, the effective STCG rate is simply 20.8%. This is the rate you should use for most practical calculations unless your income is in the higher brackets.
Strategies to Reduce or Defer STCG
While the 20% STCG rate is unavoidable if you sell within 12 months at a profit, there are several legal strategies to minimize the impact.
Wait for the 12-month mark: The simplest and most effective strategy. By holding for just over 12 months, your gain shifts from 20% STCG to 12.5% LTCG with a Rs 1.25 lakh exemption. For a Rs 2 lakh gain, this changes your tax from Rs 40,000 to Rs 9,375 — a saving of Rs 30,625.
Offset STCG with capital losses: Harvest losses from underperforming stocks in your portfolio. Both STCL and LTCL from the current year, as well as carried-forward STCL from previous years, can offset STCG. If you have Rs 3 lakh in STCG and Rs 2 lakh in STCL, your net taxable STCG is just Rs 1 lakh.
Time your sales across financial years: If you have a large short-term gain to book, consider splitting it across two financial years if possible. This can help manage advance tax obligations and potentially reduce surcharge if applicable.
Use the basic exemption limit: If you have no other income or very low income, your STCG benefits from the basic exemption limit. Under the new tax regime, income up to Rs 3 lakh is exempt. Under the old regime, it is Rs 2.5 lakh. Your STCG fills this slab first at zero tax before the 20% rate applies to the balance. However, for salaried individuals, salary income typically exhausts this limit first.
Common Mistakes with STCG Tax
Several mistakes are commonly made by investors when dealing with STCG, often leading to either overpayment of tax or trouble with the Income Tax Department.
Mistake 1: Ignoring advance tax obligations. If your STCG tax liability exceeds Rs 10,000 for the year, you must pay advance tax in quarterly installments. Many investors realize gains mid-year but only think about tax at ITR filing time, resulting in interest under Sections 234B and 234C.
Mistake 2: Not using FIFO correctly. Some investors calculate gains using average price instead of FIFO. While your broker may show an average price in the holdings page, the Income Tax Act mandates FIFO. Using the wrong method can result in incorrect gain classification and tax computation.
Mistake 3: Failing to report small STCG amounts. All capital gains must be reported in your ITR, even if the amounts are small. The Income Tax Department receives data from stock exchanges and can flag unreported transactions during scrutiny.
Mistake 4: Missing loss harvesting opportunities. Investors often focus only on profitable trades while ignoring that loss-making positions can be strategically sold to offset STCG and reduce tax. Even if you want to continue holding the stock, you can sell and repurchase to book the loss.
Mistake 5: Confusing STCG under Section 111A with regular STCG. Only listed equity shares with STT qualify for the 20% rate. Unlisted shares and non-STT transactions are taxed at your slab rate, which could be 30% or higher.
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Analyze My Portfolio FreeFrequently Asked Questions
Is the 20% STCG rate applicable to all types of shares?
No. The 20% rate under Section 111A applies only to listed equity shares on recognized Indian stock exchanges where STT has been paid. Unlisted shares, foreign shares, and shares where STT is not applicable are taxed at your regular income tax slab rate as STCG, which could be up to 30% (plus surcharge and cess).
Can I reduce STCG tax by claiming deductions under Section 80C?
No. STCG taxed under Section 111A at the flat 20% rate does not benefit from Chapter VI-A deductions like 80C, 80D, etc. These deductions reduce your taxable income under normal slab rates but do not reduce income taxed at special rates. Under the new tax regime, most deductions under Chapter VI-A are not available anyway.
If I sell at a loss within 12 months, do I get any tax benefit?
Yes. A Short-Term Capital Loss (STCL) can be set off against both STCG and LTCG in the current year, reducing your overall tax. If the loss cannot be fully set off, it can be carried forward for up to 8 years (provided you file your ITR before the due date) to offset future capital gains.
Is STCG added to my salary income for tax slab purposes?
No. STCG under Section 111A is taxed at the flat rate of 20%, separate from your slab income. It is not added to salary income for slab calculation. However, STCG is added to your total income for the purpose of determining surcharge applicability. This means high STCG can push you into a higher surcharge bracket.