How India's Union Budget works: deficits, spending and borrowing explained

Every year, usually on 1 February, the Finance Minister presents the Union Budget in Parliament. Television channels count the minutes, markets swing, and everyone asks the same question: “What’s in it for me?” To answer that, it helps to understand how the Budget is built.

What the Budget legally is

The Constitution (Article 112) requires the government to place an Annual Financial Statement before Parliament — a statement of expected receipts and expenditure for the coming financial year, which runs from April to March. Alongside it come:

• Demands for Grants — what each ministry wants to spend, which Parliament votes on.
• The Finance Bill — changes to taxes, such as income-tax slabs or customs duties.
• The Appropriation Bill — the legal authority to withdraw money from the Consolidated Fund of India.

All Budget documents are published on indiabudget.gov.in, which is the best place to look up actual figures.

Where the money comes from

Government receipts fall into two buckets:

Revenue receipts	Capital receipts
Tax revenue: income tax, corporate tax, GST, customs, excise	Borrowings (market loans, small savings, external loans)
Non-tax revenue: dividends from PSUs and the RBI, fees, interest	Non-debt receipts: disinvestment, loan recoveries

Note that the Centre shares a portion of tax collections with states, as recommended by the Finance Commission, so gross tax collected is larger than what the Centre keeps.

Where it goes: revenue vs capital spending

Revenue expenditure keeps the government running and doesn’t create assets: salaries, pensions, interest on past debt, subsidies, and grants to states.

Capital expenditure (capex) creates assets or reduces liabilities: highways, railways, defence equipment, loans to states for infrastructure.

Why the split matters: capex can raise the economy’s future capacity and tends to “crowd in” private investment — a new road makes a factory nearby more viable. Revenue spending supports consumption and welfare, but borrowing to fund it is generally seen as less healthy.

The deficits, decoded

• Fiscal deficit = Total expenditure − (Revenue receipts + Non-debt capital receipts). This is the amount the government must borrow in the year.
• Revenue deficit = Revenue expenditure − Revenue receipts. If positive, the government is borrowing to pay day-to-day bills.
• Primary deficit = Fiscal deficit − Interest payments. It shows whether today’s policies, excluding the cost of past debt, are adding to borrowing.

Deficits are usually quoted as a percentage of GDP, so they can be compared across years and countries. The Fiscal Responsibility and Budget Management (FRBM) Act sets the framework for bringing them down over time.

A worked example (an imaginary budget)

Scale an imaginary budget to ₹100 to keep things simple. These are illustrative numbers, not India’s actual figures.

Item	₹
Revenue receipts (taxes + non-tax)	70
Non-debt capital receipts	2
Revenue expenditure	78
— of which interest payments	20
Capital expenditure	22
Total expenditure	100

• Fiscal deficit = 100 − (70 + 2) = 28
• Revenue deficit = 78 − 70 = 8
• Primary deficit = 28 − 20 = 8

So this government borrows 28 of every 100 it spends — and 20 of that just pays interest on old debt. That is why economists watch the interest burden closely.

How the government borrows

The Centre borrows mainly by issuing government securities, through auctions conducted by the RBI as its debt manager:

• Dated securities — bonds with maturities of several years to several decades.
• Treasury bills — short-term paper of up to a year.
• Small savings — money from schemes like PPF and post office deposits, routed through the National Small Savings Fund.
• A smaller share from external sources.

Banks, insurers, pension funds, mutual funds and — through platforms like RBI Retail Direct — individuals buy these securities.

Why it matters to markets and households

• Interest rates. Heavy borrowing can push up bond yields, which can feed into loan rates. A credible plan to reduce the deficit can do the opposite. See how the repo rate reaches your EMI.
• Sectors and stocks. Capex allocations shape order books for infrastructure, cement, steel and capital goods companies.
• Your taxes. The Finance Bill decides slabs, deductions and capital gains rules.
• Inflation. Subsidy, fuel and customs-duty decisions can affect prices you pay.

What to watch on Budget day

1. The fiscal deficit target and whether last year’s was met.
2. The capex allocation compared with the previous year.
3. The gross and net borrowing plan.
4. Tax changes in the Finance Bill that affect you directly.
5. The full documents on indiabudget.gov.in — headlines often miss the detail.

This explainer is for education only and is not investment or tax advice. For actual Budget figures, refer to official Ministry of Finance documents.