Capital gains — an indicative working
Enough of a working that a seller does not plan their next purchase ignoring tax entirely — and clearly labelled as a prompt for their chartered accountant, not an answer.
Your numbers
| Cost taken into accountPurchase price (indexed if applicable) plus improvements plus transfer expenses. | — |
| Gain before relief | — |
| Relief applied | — |
| Sale price less indicative tax | — |
| Rate applied | — |
Capital gains on property is not an agent's calculation. The rules depend on holding period, how the property was acquired, what indexation or reinvestment relief applies, and the seller's own position — and they have changed more than once in recent years.
What an agent can usefully do is produce a first-pass number so the seller does not plan their next purchase around a figure that ignores tax entirely. Treat the output here as a prompt for a conversation with a chartered accountant, not as an answer.
The structure of the calculation
Gain = sale consideration − (cost of acquisition + cost of improvement + expenses on transfer). Where the holding period exceeds the long-term threshold, the gain is long-term and a different rate applies; below it, the gain is short-term and generally taxed at the seller's slab rate.
Where indexation is available to the seller, the cost of acquisition is uplifted, which reduces the gain. Whether it is available, and at what rate, has changed — which is precisely why this page will not assume it for you.
Worked example
Bought at ₹42 lakh, sold at ₹80 lakh after eight years, ₹6 lakh of improvements and ₹1.2 lakh of transfer expenses. Without indexation the cost base is ₹49.2 lakh and the gain is ₹30.8 lakh. At 12.5% the indicative tax is about ₹3.85 lakh, before surcharge and cess.
With a 40% indexation uplift the cost base becomes ₹63.9 lakh, the gain falls to ₹16.1 lakh and the indicative tax to roughly ₹2 lakh. The difference between those two answers is why nobody should rely on a calculator here.
What the agent should actually say
"There will be capital gains tax and it is not small. Here is a rough working so you can plan, but get your CA to confirm it before you commit to what you are buying next."
That is honest, it is useful, and it keeps you out of a conversation you are not qualified to have.
Indicative only, and deliberately conservative about what it assumes. Rates, thresholds, indexation availability and reliefs change and depend on the individual. Not tax advice.
Questions
Should an agent calculate capital gains for a client?
Only as an indicative figure, clearly labelled as such, so the seller plans realistically. The actual computation belongs to a chartered accountant, and saying so plainly builds more trust than pretending otherwise.
What counts as cost of improvement?
Capital improvements with documentation — an added room, a major structural upgrade. Routine repairs and repainting generally do not qualify. Receipts matter enormously here.
Does reinvesting in another property remove the tax?
There are reliefs for reinvestment in residential property or specified bonds, each with its own conditions, limits and time windows. They are easy to fail on a technicality, so they need proper advice rather than a calculator field.
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