CDS Economics · Money, Banking and Public Finance
Budget, Deficits and Fiscal Policy
How the Union Budget is passed and where its money goes, the four deficits and how to work each one out, and what government borrowing does to interest rates and private investment.
Why this matters
Sixteen CDS questions, five of them HARD, from 2017 (II) to 2026 (II). The deficit definitions were asked in 2017 (II), 2021 (I) and 2023 (II), and interest payments as the biggest revenue expense in 2024 (II) and 2026 (I), so the definitions repeat more than any budget figure does.
Concept 1 of 3: The Union Budget: process and main items
The Budget is the government's yearly statement of what it expects to earn and spend. Spending on the running of government (salaries, interest, subsidies) is revenue expenditure; spending that builds assets or repays loans is capital expenditure. Parliament must approve the spending, and if it cannot finish before 1 April, it gives the government an advance to carry on.
Definition
The terms:
- Revenue expenditure: does not create assets (salaries, pensions, interest, subsidies). Capital expenditure: creates assets or reduces liabilities (roads, loans given, repayment of debt).
- Interest payments are the largest single item of the Union's revenue expenditure (true in Budget 2025-26), ahead of defence, pensions and subsidies.
- Effective capital expenditure = capital expenditure + grants for creation of capital assets given to States. As a share of GDP it rose from 2020-21 to 2023-24, while revenue expenditure fell back from its pandemic peak.
- Vote on account: an advance grant from the Consolidated Fund for part of the new year, until the demands for grants are voted. A vote of credit is for an unforeseen need whose amount cannot be stated.
- Appropriation Bill: authorises withdrawals from the Consolidated Fund; Finance Bill: the tax proposals.
- Food subsidy is the largest major subsidy (2019-20 Budget Estimates, about ₹1.84 lakh crore).
- Union Budget 2025-26 raised the FDI cap in insurance from 74% to 100%.
| Item | Key fact |
|---|---|
| Largest item of revenue expenditure | Interest paymentsQ Asked twice: CDS 2024 (II) and CDS 2026 (I, about Budget 2025-26). |
| Largest major subsidy | Food subsidy (2019-20 Budget Estimates)Q CDS 2020 (II). |
| Effective capital expenditure | Capital expenditure plus grants for creation of capital assetsQ CDS 2025 (II), a HARD question: it rose as a share of GDP from 2020-21 to 2023-24; revenue expenditure did not. |
| FDI cap in insurance | Raised from 74% to 100% in Budget 2025-26Q CDS 2025 (II). |
| Vote on account | Advance grant until the demands for grants are passed |
Practice this conceptself-check · 4 quick reps
The same idea in a real exam question:
CDS · 2023 · CDS (II) 2023 — General Knowledge · Q22Moderate
Example 1 · Money, Banking and Public Finance · Budget, Deficits and Fiscal Policy
The executive is given an advance grant to meet temporary and running requirements of Government of India in the beginning of the new financial year until the demands are voted by the legislature. This is known as :
Vote on account, not vote of credit
An advance to keep the government running until the Budget is passed is a vote on account. A vote of credit is a blank grant for an unexpected need, such as a war.
Interest beats defence and pensions
In the Union Budget the largest revenue expense is interest payments, not defence, salaries or pensions.
Concept 2 of 3: Fiscal, revenue and primary deficits
Each deficit answers a different question. The fiscal deficit asks how much the government must borrow this year. The revenue deficit asks whether it borrows to pay day-to-day bills. The primary deficit asks how much it would borrow if there were no interest on old loans to pay.
Definition
The four deficits:
- Fiscal deficit = total expenditure − (revenue receipts + non-debt capital receipts). In words: total expenditure over total receipts excluding borrowings. It equals the government's borrowing need.
- Revenue deficit = revenue expenditure − revenue receipts.
- Effective revenue deficit = revenue deficit − grants for creation of capital assets.
- Primary deficit = fiscal deficit − interest payments.
- Targets (figures that change): the FRBM Act (2003) aimed at a fiscal deficit of 3% of GDP. Budget 2025-26 put the Union's fiscal deficit at 4.4% of GDP, down from 4.8% in 2024-25. In 2019-20 the budgeted 3.3% could not be held and was revised up.
The deficits
- total expenditure
- revenue receipts
- non-debt capital receipts (recovery of loans, disinvestment)
- revenue expenditure
Worked example
A government spends ₹500 crore in all, of which ₹380 crore is revenue expenditure and ₹60 crore is interest. Its revenue receipts are ₹300 crore and non-debt capital receipts ₹20 crore. Find the fiscal, revenue and primary deficits.
Practice this conceptself-check · 4 quick reps
The same idea in a real exam question:
CDS · 2021 · CDS (I) 2021 — General Knowledge · Q27Moderate
Example 2 · Money, Banking and Public Finance · Budget, Deficits and Fiscal Policy
The excess of total expenditure of Government over its total receipts, excluding borrowings, is known as
Primary deficit removes interest, nothing else
Primary deficit = fiscal deficit − interest payments. Defence, subsidies or pensions are never the item subtracted.
Fiscal deficit excludes borrowings from receipts
The fiscal deficit compares spending with receipts other than borrowing, so it measures how much must be borrowed. Including borrowings in receipts would make every budget balance.
Concept 3 of 3: Crowding out, crowding in and the policy mix
When the government borrows heavily, it competes with businesses for the same savings, so interest rates rise and some private projects are dropped: crowding out. But public spending also raises demand, and if firms expect more sales they may invest more: crowding in. Which wins depends on the money supply and on what the government spends on.
Definition
The effects:
- Crowding out: deficit spending raises interest rates and reduces private investment.
- Crowding in: government spending raises demand and expectations and induces more private investment.
- A deficit from subsidies (no new supply) tends to raise inflation, may raise interest rates and may slow private investment.
- If extra government spending is not matched by more money supply, interest rates rise and the effect on income is smaller.
- ₹X of government purchases raises income more than ₹X of transfers to households, because households save part of a transfer.
- Contractionary monetary policy + expansionary fiscal policy: both raise interest rates, so the rise is unambiguous, capital flows in and the currency appreciates.
| Situation | Result |
|---|---|
| Government spending induces private investment | Crowding inQ CDS 2021 (I). |
| Tight money with expansionary fiscal policy | Interest rate rises unambiguously; currency appreciatesQ CDS 2023 (I), a HARD question. |
| Extra spending without more money supply | Smaller rise in income (interest rates go up)Q CDS 2024 (II), a HARD question: spending has a LARGER effect than an equal transfer, not smaller. |
| Deficit widened by subsidies, taxes unchanged | Inflation rises, interest rates may rise, private investment may slowQ CDS 2026 (II). |
Practice this concept4 quick reps
The same idea in a real exam question:
CDS · 2023 · CDS (I) 2023 — General Knowledge · Q22Moderate
Example 3 · Money, Banking and Public Finance · Budget, Deficits and Fiscal Policy
The contraction of private investment spending due to deficit spending by the Government is called
Out means less private investment, in means more
Crowding out: government borrowing pushes up interest rates and reduces private investment. Crowding in: government spending encourages private investment. Pump priming means spending to restart a slack economy.
Spending beats an equal transfer
A rupee of government purchase is spent in full in the first round. A rupee of transfer is partly saved, so its multiplier is smaller. A statement that spending has less impact than an equal transfer is false.
Summary — formulas & gotchas at a glance
A revision cheat-sheet for the formulas and gotchas above. Click any concept name to jump back to its full explanation.
Formulas (1)
- Fiscal, revenue and primary deficits
The deficits
Reference tables (2)
The Union Budget: process and main items5 rows
| Item | Key fact |
|---|---|
| Largest item of revenue expenditure | Interest paymentsQ Asked twice: CDS 2024 (II) and CDS 2026 (I, about Budget 2025-26). |
| Largest major subsidy | Food subsidy (2019-20 Budget Estimates)Q CDS 2020 (II). |
| Effective capital expenditure | Capital expenditure plus grants for creation of capital assetsQ CDS 2025 (II), a HARD question: it rose as a share of GDP from 2020-21 to 2023-24; revenue expenditure did not. |
| FDI cap in insurance | Raised from 74% to 100% in Budget 2025-26Q CDS 2025 (II). |
| Vote on account | Advance grant until the demands for grants are passed |
Crowding out, crowding in and the policy mix4 rows
| Situation | Result |
|---|---|
| Government spending induces private investment | Crowding inQ CDS 2021 (I). |
| Tight money with expansionary fiscal policy | Interest rate rises unambiguously; currency appreciatesQ CDS 2023 (I), a HARD question. |
| Extra spending without more money supply | Smaller rise in income (interest rates go up)Q CDS 2024 (II), a HARD question: spending has a LARGER effect than an equal transfer, not smaller. |
| Deficit widened by subsidies, taxes unchanged | Inflation rises, interest rates may rise, private investment may slowQ CDS 2026 (II). |
Watch out for (6)
- Vote on account, not vote of credit→ The Union Budget: process and main items
- Interest beats defence and pensions→ The Union Budget: process and main items
- Primary deficit removes interest, nothing else→ Fiscal, revenue and primary deficits
- Fiscal deficit excludes borrowings from receipts→ Fiscal, revenue and primary deficits
- Out means less private investment, in means more→ Crowding out, crowding in and the policy mix
- Spending beats an equal transfer→ Crowding out, crowding in and the policy mix
Test yourself on Money, Banking and Public Finance
20 past CDS questions from this chapter, timed at 20 minutes and marked the way the exam marks it. You see your score and every answer the moment you finish. Free to start.