5.1.2 Monetary vs Fiscal Policy

Two distinct levers, often confused for one

A central bank primarily uses interest rates and various liquidity tools to manage inflation and support broader economic stability, generally operating with some institutional independence from the elected government. Fiscal policy is set directly by the government through its budgetary decisions on spending programmes and taxation, and it can either work in tandem with, or sometimes pull in a different direction from, prevailing monetary policy at any given time.

Monetary policy is managed by the RBI and operates through interest rates, liquidity management and money supply. The primary tool is the repo rate, at which banks borrow from the RBI. When the RBI raises the repo rate, borrowing becomes more expensive, spending slows, and inflation pressure eases. When it cuts the rate, borrowing becomes cheaper, spending increases, and economic activity accelerates. The RBI's Monetary Policy Committee (MPC) reviews the repo rate six times a year.

Fiscal policy is managed by the central and state governments through taxation and government spending. The annual Union Budget determines how much the government collects (through income tax, GST, corporate tax, excise) and how much it spends (on infrastructure, subsidies, defence, social programs). The gap between revenue and spending is the fiscal deficit, financed by government borrowing (issuing G-Secs).

Why rising rates matter so much for both bonds and certain equities

Rising interest rates directly reduce existing bond prices, as already covered under interest-rate risk, since new bonds issued at the higher prevailing rate become relatively more attractive to investors. Rising rates also tend to disproportionately pressure equities with high current valuations relative to their present earnings, since a meaningful part of those valuations often rests on future growth that is now effectively discounted more heavily at the new, higher prevailing rate.

Monetary policy affects markets directly and quickly. A repo rate cut instantly improves bond prices (lowering yields), reduces the cost of corporate borrowing (boosting earnings expectations), and makes equity relatively more attractive than fixed income. A rate hike does the reverse. The transmission is fastest in bond markets (same day) and slower in equity markets (weeks to months as earnings expectations adjust).

Fiscal policy affects markets with a longer lag and through different channels. Government spending on infrastructure creates demand for steel, cement and construction companies. Tax changes affect corporate profitability (a cut in corporate tax rate directly boosts earnings) and consumer spending (changes in income tax slabs affect disposable income). A large fiscal deficit increases government borrowing, which pushes up bond yields and can crowd out private investment, indirectly raising the cost of capital for companies.

Why both policies genuinely matter together for investors

Monetary and fiscal policy interact continuously to shape the overall investing environment, and neither should be considered in complete isolation from the other when trying to understand why markets are behaving a certain way during any given period.