Interest Rate Impact on Stocks, Earnings and Valuations

Hello, I am CS Sandeep Kumar, and today’s topic is Interest Rates and Valuations.  In this video, we will learn about repo rate basics, the cost of borrowing and its impact on banks, NBFCs, real estate, automobiles and capital goods.  We will also understand why high interest rates put pressure on growth stocks, the relationship between interest rates and DCF valuation, the impact on debt-heavy companies, and how investors should read RBI policy commentary.  Before we move forward, let us understand two important inflation indicators. 

CPI and WPI 

CPI stands for Consumer Price Index and measures inflation at the consumer level. WPI stands for Wholesale Price Index and measures inflation at the wholesale level.   As investors, both are important. CPI tells us what consumers are experiencing, while WPI often provides an early indication of the cost pressures that companies may face.  This is why investors closely track both CPI and WPI. 

Why Investors Must Track Interest Rates 

Changes in interest rates can impact stock prices even when company earnings remain unchanged. This is something many investors tend to overlook. Most investors focus only on profits. They assume that if profits rise, the stock price will rise, and if profits fall, the stock price will fall. But the stock market is not that simple. Stock prices are driven by two factors: how much profit a company earns and the valuation that the market is willing to assign to those profits. Interest rates directly influence this valuation.  So, what exactly is an interest rate?  Simply put, an interest rate is the cost of money. When interest rates rise, borrowing becomes more expensive, and consumption and business investment can slow down. When interest rates fall, loans become cheaper and economic activity can receive support.  As an investor, the most important thing to understand is how changes in interest rates reach the stock market. When interest rates change, borrowing costs and the demand environment also change. This can impact company earnings, influence valuation multiples and, eventually, affect stock prices. 

Repo Rate 

Let us begin the discussion on interest rates with the repo rate. The repo rate is the rate at which the RBI lends money to banks. As investors, we do not necessarily need to memorise the technical definition. What matters is understanding how changes in the repo rate impact businesses and the economy.  When the RBI increases the repo rate, borrowing becomes more expensive. Loan rates can rise, EMIs can increase, and both consumers and businesses may become more cautious.  In simple terms, when the repo rate rises, loan rates may rise, borrowing may reduce and economic growth can slow down. On the other hand, when the RBI cuts the repo rate, loans become cheaper, spending may improve and economic activity can receive support. Lower borrowing costs can encourage borrowing and spending, which may support growth.  This is why investors closely track every RBI policy, as repo rate changes can eventually impact earnings, valuations and stock prices. 

Interest Rates and Corporate Earnings 

Now, the question is: how do interest rates impact company earnings? Broadly, interest rates affect earnings through two major channels.  The first channel is higher interest cost. The most direct impact comes through borrowing costs, particularly for companies carrying significant debt. When interest rates rise, interest expenses can also increase. As interest costs rise, profits can come under pressure even if sales remain unchanged.  In simple terms, higher interest rates can lead to higher interest costs and, consequently, lower profitability. This is why debt-heavy companies generally face greater pressure in a rising interest-rate environment. 

Impact on Banks and NBFCs 

Changes in interest rates also affect banks and NBFCs. For banks, moderate rate hikes can sometimes support margins because lending rates may increase. However, if rates rise too much, credit growth may also slow down.  For NBFCs, funding cost is an important factor. When interest rates rise, funding costs can increase, putting pressure on profitability.  This is why investors analysing banks and NBFCs should track both credit growth and funding costs. 

Demand Slowdown 

The second major channel is a slowdown in demand. Interest rates do not only affect company borrowing; they also influence customer demand.  When interest rates rise, EMIs become more expensive. As a result, consumers may postpone large purchases such as homes, cars and consumer durables.  When interest rates rise, EMIs can increase, demand may weaken and sales growth can slow down. When demand slows, earnings growth can also be affected.  As investors, we should remember that rising interest rates can affect companies from two directions: higher borrowing costs and slower demand growth. This is why interest rates are an important variable for corporate earnings. 

Rate-Sensitive Sectors 

Some sectors are naturally more sensitive to changes in interest rates. Examples include real estate, automobiles and capital goods.  Consumer financing and business investment play an important role in these sectors. When interest rates rise, EMIs can increase and demand may come under pressure.  This is why these sectors can be relatively more affected in a rising interest-rate environment. 

Why High Interest Rates Hurt Growth Stocks 

Growth stocks generally face greater pressure in a rising interest-rate environment. This is because the valuations of growth companies are often based heavily on future earnings.  Consider two companies. Company A generates strong profits today, while a significant portion of Company B’s expected earnings lies in the future. 

When interest rates rise, the present value of future earnings declines. Since growth stocks depend more heavily on future earnings, their valuations tend to face greater pressure. As investors, there is one principle worth remembering: the more a company’s valuation depends on future growth, the more sensitive it becomes to interest rates.  This is why growth stocks can face sharper corrections in a rising-rate environment. 

Interest Rates and Valuation Multiples 

Many investors analyse earnings but ignore valuation multiples. This can create confusion when stock prices fall even after a company reports higher profits.  A stock price is not determined by earnings alone. It depends on both earnings and the valuation multiple that the market is willing to assign to those earnings.  When interest rates rise, the market may start assigning lower valuation multiples. This process is known as valuation compression. A company’s earnings may continue to improve, but if its valuation multiple declines, the stock price can still come under pressure.  This is why successful investors track valuation multiples alongside earnings growth. 

Interest Rates and DCF Valuation 

Now, let us understand DCF, or Discounted Cash Flow. DCF valuation is based on the present value of a company’s future cash flows. To convert future cash flows into present value, a discount rate is used.  When interest rates rise, the discount rate can also increase. As a result, the present value of future cash flows declines, putting pressure on valuations. This is one reason why growth stocks and technology companies can often show greater volatility when interest rates change, as their valuations tend to depend heavily on future cash flows.  The relationship is simple. When interest rates rise, discount rates may also rise, bringing down the present value of future cash flows and, consequently, valuations.  This is why rising interest rates are generally considered a headwind for valuations, especially for high-growth companies whose valuations depend heavily on future earnings. 

Impact on Debt-Heavy Companies 

Let us now understand which businesses are most sensitive to changes in interest rates.  Companies with high levels of debt are generally among the most affected. Examples can be found in sectors such as real estate, infrastructure, telecom and utilities, where growth and operations may depend significantly on borrowed money.  When interest rates rise, interest costs can increase, profitability can decline and valuations may come under further pressure.  This is why debt-heavy companies usually face greater challenges in a rising interest-rate environment.  As investors, it is important to closely monitor debt levels and interest coverage ratios. 

How Investors Should Read RBI Policy Commentary 

Many investors focus only on the RBI’s repo rate decision. Professional investors, however, also analyse the RBI’s commentary.  In particular, investors should track the inflation outlook, growth outlook, RBI’s policy stance and future guidance. There can be situations where the repo rate remains unchanged, but the RBI signals the possibility of future rate hikes or cuts. Markets often react more strongly to expectations about the future than to the current policy decision itself.  Whenever an RBI policy is announced, investors can use a practical framework. 

Ask yourself: In which direction are interest rates moving? Which sectors could benefit or face pressure? What could be the impact on borrowing costs and demand? How could earnings and valuations be affected? Which businesses carry high debt? And what is the RBI signalling about the future?  Consistently applying this framework can help investors translate RBI policy commentary into investment analysis. 

Warning Signs Investors Should Track 

When costs begin to rise, the first signs of pressure may appear in company margins.  Investors should keep an eye on gross margins, EBITDA margins, interest coverage ratios and management commentary.  If margins continue to decline, this can be an early warning sign of pressure on future earnings. 

Conclusion 

In this video, we learnt that interest rates can impact stock prices through two key channels: earnings and valuations.  We saw how interest rates influence borrowing costs, consumer demand, growth stocks and valuation multiples.  Most importantly, the stock market does not price earnings alone. It also prices the valuation that investors are willing to assign to those earnings.  In the next chapter, we will discuss another important topic: Inflation and Corporate Margins. We will decode that in the next chapter. 

See you in the next video. 

Disclaimer: Investments in securities markets are subject to market risks. Read all the related documents carefully before investing.