What GDP measures

One number is made to stand in for a country's whole economy. It is worth knowing what is inside it before letting it do that.

The definition

Gross Domestic Product is the market value of all final goods and services produced within a country's borders in a given period.

Six words in that sentence are load-bearing.

Market value. Things are added up in rupees, because you cannot add tonnes of steel to haircuts any other way. Anything without a price is a problem, and the next section is about how that problem is handled.

Final. Only the finished thing counts. The steel sold to a car maker is not counted separately from the car, or the steel would be counted twice. Chapter 2 is about the machinery that prevents this.

Produced. Not sold, not consumed — produced. A car built this quarter and sitting unsold in a yard is in this quarter's GDP, as inventory.

Within a country's borders. Domestic, not national. A Japanese company's factory in Chennai counts in India's GDP. An Indian working in Dubai does not. Gross National Income is the other cut of the same question, and the two differ for any country with large flows either way.

In a given period. GDP is a flow, not a stock. It is production per quarter or per year, like a salary rather than a bank balance. "India's GDP is ₹88 lakh crore" is meaningless without the period attached — that figure is one quarter.

Three ways to count the same thing

Because every rupee of production is simultaneously somebody's income and somebody's spending, the same total can be reached three ways. In principle they agree exactly.

The production approach. Add up what every industry produced, net of what it consumed in producing it. This is the route India's National Statistics Office leads with, and it produces Gross Value Added before anything else — chapter 2.

The income approach. Add up what everyone earned from producing it: wages, profits, rent, interest.

The expenditure approach. Add up what was spent on it: household consumption, government consumption, investment, and exports less imports. For Q1 of 2026-27 the published components were private consumption of ₹44,74,278 crore, government consumption of ₹8,54,877 crore and fixed capital formation of ₹27,95,605 crore, at constant prices.

In practice the three never agree to the rupee, because each is built from different sources with different gaps. The difference is published as a discrepancy rather than quietly absorbed, which is the right way to handle it and is a detail chapter 6 returns to.

The production boundary

Here is the part that produces most of the arguments about GDP, and it is a boundary rather than a failure.

A statistician has to decide what counts as production. The line drawn — internationally, by convention, so that countries are comparable — is roughly: things exchanged in a market, plus a short list of imputed exceptions.

So:

Counted. Everything bought and sold. A meal in a restaurant. A cleaner you pay. A car. A haircut. A loan arranged.

Not counted. The same meal cooked at home. Your own housework. Care for your own children or parents. Volunteering. A neighbour fixing your tap for nothing.

This has a famous and uncomfortable consequence: if a person marries their housekeeper and stops paying them, measured GDP falls while exactly the same work gets done. Nothing in the economy changed except whether money moved.

The exception worth knowing, because it is large and surprises people: owner-occupied housing is imputed. If you own the home you live in, the statisticians estimate the rent you would have paid and add it to GDP, because otherwise a country where people own homes would look poorer than an identical one where they rent. India's accounts carry this as "ownership of dwelling", grouped with financial and professional services in the published tables.

So the boundary is not "market transactions" exactly. It is "market transactions, plus the imputations needed to stop the measure being absurd" — and which absurdities get fixed is a judgement made by international convention.

Gross, and what that word is doing

Gross means before deducting the capital used up in producing the output.

Factories wear out, roads degrade, machines reach the end of their lives. GDP ignores all of it. Subtract that consumption of fixed capital and you get Net Domestic Product, which is closer to what a country could consume without getting poorer, and which is almost never quoted because the depreciation estimate is uncertain.

The same word hides something larger, and chapter 6 takes it up properly: GDP is gross of natural capital too. A forest felled is output; the absence of the forest is not a cost anywhere in the accounts.

What the number looked like

For the quarter April to June 2026, published by the National Statistics Office on 31st August 2026:

Q1, 2026-27
Real GDP (constant 2022-23 prices)	₹81.36 lakh crore
Same quarter a year earlier	₹75.46 lakh crore
Real growth	7.8%
Nominal GDP (current prices)	₹88.27 lakh crore
Nominal growth	10.3%

Two different GDPs for the same quarter, differing by ₹6.91 lakh crore. Chapter 3 is entirely about why, and it is the single most common confusion in reading these figures.

The point

GDP is the market value of final goods and services produced inside a country during a period — a flow, not a stock, and domestic rather than national. It can be counted three ways that should agree and never quite do. It counts what is paid for and not what is done for free, with owner-occupied housing imputed to stop the measure being absurd, and it is gross of the capital used up in producing it. For April to June 2026 India's real GDP was ₹81.36 lakh crore, 7.8% above the same quarter a year before.