Why this series exists

The posts on this blog so far have been about what an investment is worth. None of them mentioned that you don’t keep all of it.

Tax is one of the costs that sits between an investment’s return and what you keep, alongside fees. This series is about Tax Year 2026-27 (FY 2026-27), the year starting 1 April 2026 (FY is financial year). The rules differ by type of income, and by how long an asset was held: a gain realised eleven months in and a gain realised thirteen months in are taxed differently for no reason except the calendar.

This series covers the mechanics. It won’t tell you what to do.

A note on how this series is written

Indian tax law was rewritten recently. The Income-tax Act, 2025 replaced the 1961 Act with effect from 1 April 2026. Almost every section was renumbered — the old section 80C became section 123 — and the twin concepts of “Previous Year” and “Assessment Year” were collapsed into a single Tax Year. The capital-gains rates used in this series are the ones in that Act; we did not compare the income-tax slab tables with the 1961 slabs.

So this series teaches mechanics rather than citations. Rules change, so each post states the date its rules were last checked, and section numbers move even more; a post built around them would be stale before it was useful. Where you need to cite chapter and verse — filing, disputes, anything contested — that’s a job for a professional and the current text of the Act.

Three kinds of investment income

Almost everything an investment pays you falls into one of three buckets, and they are taxed under genuinely different rules. Getting the bucket right is most of the work.

What it is Broadly how it’s taxed
Capital gains Profit from selling an asset for more than you paid Depends on the asset and how long you held it
Dividends A share of profits paid out by a company or fund Added to your income, taxed at your slab rate
Interest Paid on deposits, bonds, some debt instruments Added to your income, taxed at your slab rate

Two things follow immediately.

Capital gains are the complicated one. Dividends and interest simply join your income. Capital gains have their own rates, their own holding-period rules, their own exemption, and their own loss rules — which is why most of the posts in this series are about them.

A capital gain is taxed when you sell, not while you hold. A holding that has quadrupled has no capital gains tax due while you hold it. Tax on capital gains is triggered by the transaction, not by the gain existing. (Dividends and interest are different: they can be taxed as they are received or accrue, and tax can be deducted at source before you sell anything. Later posts cover both.)

🧒 Explain it like I'm 10 (optional — skip if this is already clear)

Imagine you collect trading cards.

  • If a card you own becomes more valuable, nobody asks you for anything. You just own a better card. That’s an unrealised gain.
  • The moment you sell it for more than you paid, the profit counts, and a slice goes in tax. That’s a capital gain.
  • If the card company sends you a small payment just for owning the card, that’s like a dividend — and it counts as income the moment it arrives, whether you wanted it or not.

The big one people miss: a card going up in value triggers no capital gains tax until you sell. Holding isn’t a taxable event. Selling is.

The single most important variable

For capital gains, the question that decides almost everything is: how long did you hold it?

Held for a SHORT period   ->  Short-Term Capital Gain (STCG)
Held for a LONG period    ->  Long-Term Capital Gain (LTCG)

Where the line falls depends on the asset:

Asset Long-term after
Listed shares, equity mutual funds 12 months
Unlisted shares, property, physical gold and many other assets 24 months (some listed instruments differ; check the asset)

And the rates for listed equity and equity funds:

Rate
Short-term (≤ 12 months) 20%
Long-term (> 12 months) 12.5%, on gains above ₹1,25,000 a year

There is also a 4% health and education cess applied on top of the tax itself — not on the gain. It’s small, it’s easy to forget, and it makes a 12.5% headline rate an effective 13.0%. Most published examples omit it; the worked examples in this series include it.

Above ₹50 lakh of total income a surcharge is added to the tax too, before the cess. The Memorandum to the Finance Bill, 2026 (listed under Sources) shows the surcharge on equity capital gains and dividends capped at 15%, and the highest surcharge rate under the new regime capped at 25%. The Bill is not the enacted Act, and the old-regime position was not re-checked, so check the current rule. The worked examples in this series assume income below ₹50 lakh, so no surcharge.

The next post is entirely about that holding-period line, because a day either side of it changes the rate by 7.5 percentage points.

One thing that has changed

Debt mutual funds no longer work the way many older articles describe. Gains on units of “specified” debt funds acquired on or after 1 April 2023 are taxed at the investor’s slab rate whatever the holding period, and indexation is gone for sales from 23 July 2024. If you’re reading an article that mentions indexation on debt funds, check its date and check the current rule. The debt funds post in this series covers the definition.

Where the rest of the series goes

Later posts take each bucket in turn — gains on equity and on debt, dividends and interest, losses, SIPs, deductions, filing, and the special cases. The series page lists them in order.

The worked examples in the core posts of this series run on the real NAV (net asset value, a fund’s per-unit price) history used in the Mutual Funds series — UTI Nifty 50 Index Fund (regular plan, growth), NAVs from AMFI (the Association of Mutual Funds in India), as of 31 March 2026, used for illustration only — so the tax arithmetic sits on actual prices rather than round invented numbers.

Common mistakes

  • Thinking unrealised gains are taxed. Capital gains tax isn’t due on a gain you haven’t realised by selling.
  • Using one holding-period rule for everything. Twelve months for listed equity, twenty-four for most other assets. Applying the equity rule to gold or property gets it wrong.
  • Reading pre-2023 articles on debt funds. Indexation on debt funds is gone for sales on or after 23 July 2024, and the rules for specified funds changed; check the current rule.
  • Forgetting the cess. It’s 4% on the tax, not on the gain — small, but it lifts a 12.5% rate to an effective 13.0%.
  • Assuming the fund deducts tax for you. For resident investors, mutual funds generally do not deduct tax on capital gains at redemption. The money arrives whole and the liability is yours.

Sources

  • Income-tax Act, 2025 (a copy hosted by ICAI): the Act itself; opened on 1 November 2026 to check the provisions this post describes. Points not found there are marked “check the current rule”.
  • Finance Act, 2026 (Gazette of India): not opened for this post (the gazette copy could not be reached), so points that depend on the 2026 changes rest on the Bill’s memorandum below and are flagged where they appear.
  • Memorandum explaining the provisions of the Finance Bill, 2026: the government’s explanation of the Bill as introduced (the Bill, not the enacted Act).

Takeaway: Investment income splits into capital gains, dividends and interest, and only the first has its own rates and holding periods, which turn on what you held and for how long. A capital gain is taxed when you sell; dividends and interest follow their own timing.