How interest rates affect fundamental analysis

How interest rates affect fundamental analysis

Reading time: 9 minutes

Interest rates sit at the centre of many economic and investment decisions. They influence how much consumers borrow, how much companies spend and how investors value future earnings. That makes them an important part of fundamental analysis, even when a company’s earnings haven’t changed.

For traders and investors, understanding how interest rates affect fundamental analysis means looking beyond a central bank’s headline decision. The direction of the change is as important as market expectations, inflation, economic growth and the pace at which policy may change.

What are interest rates and why are they important?

Central banks use interest rates as one of their main tools for influencing economic activity. When inflation is too high, they can raise rates to make borrowing more expensive and encourage households and businesses to reduce spending. When growth is weak, they can cut rates to make credit cheaper and support demand.

This creates an important link between interest rates and fundamental analysis. A change in borrowing costs can affect revenue, profit margins, investment plans, cash flow and valuations for companies across the economy. Interest rates and inflation are also closely connected. Higher rates can reduce demand and help slow price growth, although monetary policy works with a lag. Lower rates can encourage spending and investment, which may support growth but can also add to inflationary pressure.

Impact of interest rates on economic growth

The effect on economic growth usually works through several channels. Higher borrowing costs can make mortgages, business loans and credit more expensive. Consumers may delay large purchases, while companies may postpone expansion or reduce capital spending. Lower rates can have the opposite effect. Cheaper financing can encourage companies to invest, expand and potentially increase hiring. Consumers may also have more incentive to borrow and spend.

This is important for fundamental analysis because economic growth can have a significant impact on corporate performance. A slowdown can hurt companies that depend heavily on consumer demand, while lower rates may support sectors that rely on financing.

The relationship is not always straightforward. If rates rise because the economy is strong, some companies may continue to grow despite higher borrowing costs. Traders therefore usually consider why rates are moving, not simply whether they are going up or down.

Interest rates and financial markets

Markets react to the gap between what a central bank does and what investors expect it to do. A rate hike that was widely anticipated may cause only a limited move. Conversely, a surprise decision, or a change in the central bank’s outlook, can produce a much larger reaction. This is a key part of understanding how interest rates affect fundamental analysis.

For example, the US Federal Reserve (Fed) raised the federal funds target range in September 2026 by 25 basis points to 3.75%-4.00%, its first increase since 2023. Its projections also pointed to another hike before the end of 2026. US stocks fell after the announcement, with the Dow Jones dropping 1.2% and the S&P 500 losing 0.44%. The US dollar (USD) strengthened, while Treasury yields also moved higher. The market reaction showed that investors were responding not just to the rate increase, but to the prospect of tighter policy ahead.

The European Central Bank (ECB) also raised its three key rates by 25 basis points in September 2026, taking the deposit rate to 2.50%. The ECB said inflation was expected to remain above its 2% target for an extended period and projected average headline inflation of 3.0% for 2026. The euro slipped immediately after the announcement. European shares also fell, with the STOXX 600 dropping 0.7%, as investors weighed the possibility of further tightening and the economic impact of higher inflation.

These examples show why interest rates and financial markets cannot be analysed in isolation. The same rate decision can affect stocks, bonds and currencies differently depending on what investors had already priced in.

How do interest rates affect stocks?

Interest rates can impact company fundamentals and, in turn, their valuations. Higher rates mean higher financing costs for companies. Businesses with larger debts would face higher interest expenses, which has a direct impact on cash flows.

Higher rates can also change consumer behaviour. When people become more cautious about borrowing, automobile companies, real estate firms, as well as companies selling electronics or other big-ticket products feel the impact.

Interest rates also influence how investors value future profits. In many valuation models, future cash flows are discounted using interest rates: a rate that reflects the cost of money and risk. When that rate rises, the present value of future cash flows falls.

This can be particularly important for growth stocks whose valuations depend heavily on profits expected several years ahead. More established companies, with strong current cash flow and lower debt, may respond differently.

This does not mean every rate hike is automatically negative for stocks. The market also considers earnings, economic growth and what was already priced into valuations.

How do interest rates impact forex markets?

Forex markets are particularly sensitive to changes in interest rate expectations. If investors expect one central bank to maintain higher rates than another, the former’s currency can become more attractive because higher yields may encourage capital flows into assets denominated in that currency. However, exchange rates also reflect growth, inflation, risk sentiment and expectations for future policy.

The USD’s reaction to the September Fed decision illustrates this. The dollar rose after the Fed increased rates and signalled further tightening. The move reflected expectations that US interest rates could remain higher for longer. The Japanese yen (JPY) reacted very differently when the Bank of Japan (BoJ) raised its policy rate from 1.00% to 1.25% in September 2026, its highest level in 31 years. The JPY weakened after the announcement because the move was widely expected and the accompanying guidance was viewed as less hawkish than some investors had hoped.

This is why forex traders usually do not assume that a rate hike automatically strengthens a currency. The market considers the decision relative to expectations, as well as what it signals about future monetary policy.

How to use interest rates in fundamental analysis?

Interest rate analysis can become more useful when combined with a company’s earnings and macroeconomic data. Traders commonly start with the central bank’s current policy stance, then assess the direction of monetary policy. Is the bank tightening, easing or holding rates steady? Next, they tend to examine economic data like inflation, employment, GDP growth and consumer spending. Markets typically use these indicators to speculate whether interest rates will change.

For stocks, traders typically review the company’s debt, interest expense, cash flows and refinancing needs. A company with high debt levels may be more exposed to higher rates. Valuation also comes into focus. Traders generally compare metrics like price-to-earnings ratio with earnings growth and the broader market.

When a central bank hikes rates, investors may demand a greater return from equities, which can put pressure on high valuations.

For forex, they usually compare monetary policy expectations across the two economies in a currency pair. A trader looking at EUR/USD, for example, might consider not only what the ECB and Fed are doing today, but also how their expected paths could diverge.

Trading interest rate decisions

Interest rate announcements can create sharp price movements, but trading them requires preparation. Before a decision, experienced traders usually check the current policy rate, market expectations and recent inflation and employment data. They pay attention to the central bank statement and press conference as well. The wording of the post-meeting statement can change expectations even when the rate itself remains unchanged.

The Bank of England’s (BoE’s) September 2026 decision is an example of this. The BoE kept the bank rate at 3.75%, but the vote was split 6-3, with three policymakers preferring a 25-basis-point increase. UK inflation had risen to 3.1% in August, with higher energy prices adding to the pressure. The GBP/USD fell to nearly 1.3375 following the announcement.

Contracts for Difference (CFDs) allow traders to take positions on markets that may react to interest-rate decisions without needing to own the underlying asset. Traders can use their analysis of a central bank’s rate path to go long or short to capture potential price movements. Since CFDs can be traded on leverage, traders can open a much larger position than they could with only the capital in their account. However, larger positions can amplify both potential gains and losses. This makes risk management crucial.

Risk management is especially important around market-moving events. Spreads can widen and prices can move quickly as liquidity changes. In addition, markets can initially move in one direction and reverse when traders digest the statement, economic projections or comments from policymakers.

Bring interest rate analysis into your trading plan

Interest rates are not a standalone signal. They are one part of a wider fundamental picture that includes inflation, growth, employment, earnings and market expectations. For traders, the goal is typically to understand the transmission mechanism: how a central bank decision can affect borrowing costs, company profits, valuations, currencies and investor sentiment. That approach makes interest rate analysis more useful than simply tracking whether rates are rising or falling.

FP Markets offers CFD trading on a variety of assets, including forex, shares, indices and commodities, with competitive spreads and low-latency execution. Open your account to explore how interest rates affect fundamental analysis and practice applying it to your trading strategy.