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STCG Calculator: Compute Short-Term Capital Gains Tax Accurately

Calculator200 Editorial Team — published September 2026, updated 20 September 2026

An STCG calculator resolves the intricate question of how much tax you owe on short-term capital gains with precision that manual computation struggles to match. Enter your purchase price, sale price, holding period, and asset type, and it returns the exact tax liability, accounting for section 111A flat rates, slab-based taxation, surcharge, and health and education cess. Whether you are squaring off equity trades, redeeming debt funds, or selling property within the short-term window, an accurate STCG calculator eliminates the guesswork that leads to underpayment or overpayment.

What Exactly Does an STCG Calculator Compute?

At its core, a short-term capital gains calculator measures the profit earned from transferring a capital asset held for a period at or below the statutory short-term threshold. The output is the taxable gain, the applicable tax rate, and the final tax liability inclusive of surcharge and cess.

The complexity lies in the asset-specific rules. Listed equity shares attract a flat 20% under Section 111A, while property and gold gains are added to your total income and taxed at slab rates. Debt mutual funds acquired on or after 1 April 2023 are always short-term, regardless of holding period, and taxed at slab rates under Section 50AA. A well-built STCG calculator applies the correct rate to the correct asset class, rather than forcing every gain through a single formula.

This distinction matters most when precision carries consequences. An investor with a mixed portfolio — some equity, some debt, some property — needs a tool that separates Section 111A gains from slab-rate gains, because the two are taxed differently and the interaction with the basic exemption limit differs. Getting that wrong can swing the final tax figure by thousands of rupees.

The STCG Calculation Formula

You can compute short-term capital gains by hand using a straightforward three-step process. It works for any asset class, with the tax rate applied afterwards.

  1. Net Sale Consideration. Start with the full value of consideration (the sale price). Deduct expenses incurred wholly and exclusively in connection with the transfer — brokerage, stamp duty, legal fees, and similar transaction costs.
  2. Deduct Cost Basis. From the net sale consideration, subtract the cost of acquisition (the purchase price) and the cost of any improvement made to the asset after purchase.
  3. Apply the Tax Rate. The result is your short-term capital gain. Apply the asset-specific tax rate — 20% for Section 111A gains, slab rates for everything else — then add surcharge and 4% health and education cess.

The formula in compact form:

STCG = Full Value of Consideration – Transfer Expenses – Cost of Acquisition – Cost of Improvement

That third step is where manual calculation becomes error-prone. Applying the wrong rate — or forgetting cess — is a common slip. A free STCG calculator automates the rate selection and cess addition, so you only need to supply the transaction figures.

STCG Tax Rates by Asset Type

Not all short-term gains are taxed alike. The rate depends on the asset and, in some cases, on when you acquired it. The following table summarises the position for FY 2025-26 (AY 2026-27) under the post-23 July 2024 framework.

Asset TypeHolding Period for STCGApplicable Tax Rate
Listed equity shares (STT paid)Up to 12 months20% under Section 111A
Equity-oriented mutual fundsUp to 12 months20% under Section 111A
Units of business trustsUp to 12 months20% under Section 111A
Debt mutual funds (acquired on or after 1 Apr 2023)Any periodSlab rate under Section 50AA
Debt mutual funds (acquired before 1 Apr 2023)Up to 24 monthsSlab rate
Immovable property (land, building)Up to 24 monthsSlab rate
Gold, jewellery, bullionUp to 24 monthsSlab rate
Unlisted sharesUp to 24 monthsSlab rate
Crypto / virtual digital assetsAny period30% under Section 115BBH

Two points deserve emphasis. First, the 20% rate under Section 111A applies only when securities transaction tax (STT) has been paid on the transaction. If STT is not paid — for example, in an off-market transfer — the gain falls back to slab rates. Second, crypto gains are taxed at a flat 30% regardless of holding period, and no deduction is allowed except the cost of acquisition.

Holding Period Rules for Short-Term Capital Gains

The holding period is the bridge between acquisition and transfer. If the asset is held at or below the threshold, the gain is short-term. If held beyond it, the gain becomes long-term and a different tax regime applies.

For listed equity shares and equity-oriented mutual funds, the threshold is 12 months. For property, gold, unlisted shares, and debt funds acquired before 1 April 2023, the threshold is 24 months. The Finance (No. 2) Act, 2024 harmonised the holding period for most assets to 24 months, reducing the earlier 36-month requirement for unlisted shares and immovable property. Debt funds acquired on or after 1 April 2023 are an exception — they are always short-term, regardless of how long you hold them.

The date of acquisition and the date of transfer are both counted for determining the holding period. If you buy on 1 January and sell on 1 January the following year, the holding period is 12 months — not 11 months and 30 days. This "inclusive of both dates" convention can push a borderline transaction from short-term to long-term, or vice versa.

To calculate the exact number of days between two dates, a date difference calculator can be useful, though the tax rules use calendar months rather than days.

Calculating STCG on Equity Shares: A Step-by-Step Example

Suppose you purchased 500 shares of a listed company on 10 May 2025 at ₹400 per share. You sold them on 15 November 2025 at ₹520 per share. Your broker charged ₹600 as brokerage on the sale. STT was paid.

Step 1 — Full Value of Consideration: 500 × ₹520 = ₹2,60,000.

Step 2 — Transfer Expenses: ₹600 (brokerage).

Step 3 — Net Sale Consideration: ₹2,60,000 – ₹600 = ₹2,59,400.

Step 4 — Cost of Acquisition: 500 × ₹400 = ₹2,00,000.

Step 5 — Short-Term Capital Gain: ₹2,59,400 – ₹2,00,000 = ₹59,400.

Step 6 — Tax: 20% of ₹59,400 = ₹11,880. Add 4% cess (₹475) = ₹12,355.

If your total income exceeds ₹50 lakh, surcharge would also apply — 10% on the tax if total income is between ₹50 lakh and ₹1 crore, 15% above ₹1 crore. But note that surcharge on Section 111A gains is capped at 15%, even if your income falls in the 25% surcharge bracket. This cap was introduced to prevent the effective rate on capital gains from exceeding a reasonable ceiling.

STCG on Debt Mutual Funds and Property

Debt mutual funds and property follow a different path. Their gains are added to your total income and taxed at the slab rate applicable to you. This means the effective rate depends on your overall income level, not on the asset itself.

Consider a taxpayer with ₹8,00,000 salary income who sells a property within 18 months of purchase, earning a short-term gain of ₹3,00,000. The gain is added to the salary, taking total income to ₹11,00,000. Tax is computed on the entire amount using the slab rates — nil up to ₹2,50,000, 5% from ₹2,50,001 to ₹5,00,000, 20% from ₹5,00,001 to ₹10,00,000, and 30% above ₹10,00,000. The gain does not get a separate rate; it rides on the slab structure.

For debt funds acquired on or after 1 April 2023, the holding period is irrelevant — the gain is always short-term. If you sell after five years, it is still STCG under Section 50AA. This was a deliberate policy shift to remove the indexation benefit and the long-term holding incentive for debt funds.

How to Use an STCG Calculator for Tax Planning

An STCG calculator is not only a compliance tool. It is a planning instrument. Used before you sell, it tells you what the tax cost will be, allowing you to decide whether the after-tax return justifies the transaction.

Suppose you are considering selling a stock held for 11 months. The gain would be short-term, taxed at 20%. If you wait one more month, the gain becomes long-term, taxed at 12.5% on gains above ₹1.25 lakh. For a gain of ₹3,00,000, the STCG tax (including cess) would be roughly ₹62,400. The LTCG tax would be 12.5% of ₹1,75,000 (after the ₹1.25 lakh exemption) = ₹21,875, plus cess = roughly ₹22,750. Waiting a month saves nearly ₹40,000. An STCG calculator makes that trade-off visible before you commit.

Similarly, if you have both short-term losses and short-term gains, an STCG calculator helps you see the net position. Short-term losses can be set off against both short-term and long-term gains, and unabsorbed losses can be carried forward for eight years if you file your return on time.

STCG vs LTCG: Key Differences

The distinction between short-term and long-term capital gains is not merely semantic. It determines the tax rate, the availability of indexation, and the exemption threshold.

ParameterSTCGLTCG
Holding period (listed equity)12 months or lessMore than 12 months
Holding period (other assets)24 months or lessMore than 24 months
Tax rate (listed equity)20% (Section 111A)12.5% above ₹1.25 lakh (Section 112A)
Tax rate (other assets)Slab rate12.5% without indexation (post 23 July 2024)
Indexation benefitNot availableNot available for most assets post 23 July 2024; transition option for property acquired before that date
Basic exemption limitAvailable for slab-rate STCG; not for Section 111A gainsAvailable for slab-rate LTCG; separate ₹1.25 lakh exemption for equity LTCG
Section 87A rebateNot applicable to Section 111A gainsNot applicable to Section 112A gains

The ₹1.25 lakh annual exemption for equity LTCG is a significant planning lever. If your equity LTCG is below that threshold, you pay no tax on it. If it exceeds ₹1.25 lakh, only the excess is taxed at 12.5%. This creates an incentive to hold equity beyond 12 months, and it is one reason why the STCG vs LTCG distinction matters so much for portfolio strategy.

Global Perspective: STCG Rules in the US, UK, Canada, and Australia

Short-term capital gains are treated differently across jurisdictions. A comparison helps put India's regime in context, though the rules of each country apply to its own residents.

United States. Assets held for one year or less produce short-term gains, which are taxed as ordinary income at federal rates ranging from 10% to 37%, plus state taxes where applicable. Long-term gains benefit from reduced rates of 0%, 15%, or 20%. The US has no separate "STCG rate" — short-term gains simply join your ordinary income.

United Kingdom. The UK does not distinguish between short-term and long-term gains for most assets. Capital gains tax applies at 18% for basic-rate taxpayers and 24% for higher-rate taxpayers on most assets, with different rates for residential property and carried interest. There is no holding-period-based rate differential, though Business Asset Disposal Relief offers a reduced rate for qualifying business gains.

Canada. Canada taxes only 50% of capital gains, whether short-term or long-term. The inclusion rate is 50% for individuals, and the taxable portion is added to income and taxed at the marginal rate. There is no distinction between short-term and long-term holding periods for tax rate purposes.

Australia. Capital gains are taxed at the individual's marginal rate. For assets held for at least 12 months, individuals may qualify for a 50% CGT discount, which halves the taxable gain. Short-term gains — assets held for less than 12 months — are taxed in full at marginal rates. Proposed reforms announced in the 2026-27 Budget may change the discount structure from 1 July 2027, but short-term treatment remains unchanged for now.

The common thread is that most developed economies either tax short-term gains at higher ordinary rates or apply a discount for long-term holding. India's flat 20% on equity STCG is relatively moderate compared to the US ordinary income rates, though the absence of indexation and the 30% crypto rate are notable features.

Common Mistakes to Avoid When Calculating STCG

Even with a calculator, certain errors recur. Avoiding them ensures your tax computation matches the department's expectations.

Frequently Asked Questions

What is an STCG calculator?

An STCG calculator is a tool that computes the tax liability on short-term capital gains from selling assets like equity shares, mutual funds, property, or gold. It takes your purchase price, sale price, holding period, and asset type to determine the applicable tax rate and final tax payable, including surcharge and cess.

What is the holding period for short-term capital gains in India?

For listed equity shares and equity-oriented mutual funds, the holding period is 12 months or less. For other assets like property, gold, and debt mutual funds, the holding period is 24 months or less. If the asset is held beyond these periods, gains are treated as long-term.

How is STCG tax calculated on equity shares?

STCG on listed equity shares where STT is paid is taxed at a flat 20% under Section 111A. The formula is: STCG = Sale Value – Purchase Value – Eligible Transfer Expenses. The tax is 20% of the gain, plus 4% health and education cess. Surcharge may apply for high-income individuals, capped at 15% for Section 111A gains.

Can I use an STCG calculator for property transactions?

Yes, but property gains held for up to 24 months are treated as short-term and taxed at your income tax slab rate, not at a flat rate. An STCG calculator for property adds the gain to your total income and applies the applicable slab rates, then adds cess.

What is the difference between STCG and LTCG tax rates?

STCG on listed equity is taxed at 20% (Section 111A), while LTCG on listed equity is taxed at 12.5% on gains above ₹1.25 lakh per year (Section 112A). For other assets, STCG is taxed at slab rates, while LTCG is taxed at 12.5% without indexation for transfers after 23 July 2024.

Do I need to pay STCG tax if my income is below the basic exemption limit?

If your total income, including STCG from non-equity assets, is below the basic exemption limit, you may not owe tax on those gains. However, STCG under Section 111A (listed equity) is taxed at a flat 20% and does not benefit from the basic exemption limit or the Section 87A rebate.

How do I offset short-term capital losses?

Short-term capital losses can be set off against both short-term and long-term capital gains in the same financial year. Unabsorbed losses can be carried forward for up to eight assessment years, provided you file your income tax return before the due date.

Is STCG applicable to debt mutual funds?

Debt mutual funds acquired on or after 1 April 2023 are always treated as short-term regardless of holding period, and gains are taxed at your income tax slab rate under Section 50AA. For units acquired before that date, the holding period is 24 months for short-term classification.

In sum, an STCG calculator transforms a task that seems mechanical into one that is accurate, asset-aware, and jurisdiction-sensitive. Whether you are booking profits on equity before the 12-month mark, redeeming debt funds that are always short-term, or selling property within the 24-month window, the tool applies the correct rate, adds the required cess, and gives you a figure you can rely on for advance tax planning and return filing. Use the short-term capital gains tax calculator above, enter your transaction details, and treat the output as what it is: a precise estimate of the tax you owe, not an approximation.