Fiscal deficit and crowding out

A government spends more than it collects in revenue, most years. The gap between the two is the fiscal deficit, and it has to be funded — usually by the government borrowing money in the market.

But the market for loanable funds is not unlimited. When the government borrows a very large amount, it leaves less room — and pushes up the price — for everyone else who also wants to borrow. That squeeze is called crowding out.

The workbook's own chain of causation: government spending helps growth provided deficits stay within reasonable limits. A rise in expenditure without a matching rise in revenue leads to a large deficit, funded through market borrowings.

A high fiscal deficit has the effect of crowding out other borrowers, such as companies, from the market. Large government borrowing pushes up market yields. Higher yields affect the profitability of other borrowers — the higher interest cost burden eats into their revenues and leaves little for future capital formation. Equity markets fall, anticipating weaker company profitability and reduced ability to expand; bond values fall too, as the higher market yields pull down the prices of existing, lower-yielding bonds. Interest-rate-sensitive sectors see activity slow down as a result.

Illustrative figures — the workbook explains crowding out in words only and gives no deficit figure of its own, so these numbers are for illustration.

Suppose the central government's GDP for the year is Rs 300 lakh crore, and its fiscal deficit widens from a budgeted 5% of GDP to 6.5% of GDP in a year of weak tax collections and higher subsidy spending — an extra Rs 4.5 lakh crore (1.5% of Rs 300 lakh crore) it must now raise through market borrowing, over and above the original plan. To fund the gap, it issues a much larger volume of government securities than usual.

As the market absorbs this larger supply of government borrowing, yields on government securities rise to attract buyers. A private company that was planning to issue Rs 500 crore of corporate bonds to fund an expansion now finds it must offer a higher coupon to compete with the more attractive government paper — raising its own cost of capital, or in some cases forcing it to postpone the borrowing altogether. This is crowding out in action: the company is effectively squeezed out of easy access to the debt market by the scale of the government's own borrowing.

At the same time, a retiree's existing long-duration bond fund sees its NAV fall as market yields rise generally, and an equity fund weighted toward interest-rate-sensitive sectors such as real estate also comes under pressure, anticipating slower expansion by companies facing the higher cost of capital.

Chapter 2, section 2.8 (Government Finances), gives this full causal chain — deficit, market borrowing, yields, crowding out, equity and bond impact — in a single dense paragraph. Expect a question on the sequence: which effect causes which, and what happens to bonds and equity together when a fiscal deficit is high.

• Crowding out affects "other borrowers, such as companies" — the workbook's own phrase — not the government itself; the government is the cause of the squeeze, not a victim of it.
• Bonds and equity are hurt together by a high fiscal deficit, through the same channel (higher market yields) — the same joint effect seen with contractionary policy.
• A fiscal deficit is not inherently harmful — the workbook's own qualifier is "provided government deficits are within reasonable limits"; the crowding-out effect is specifically a high deficit's consequence.