Is cash king again?

Cash savers are currently enjoying the highest returns in nearly two decades, with some popular savings accounts offering fixed-term deposit rates over 5% p.a. After a prolonged period of virtually zero return on cash, rates today are multiple times higher compared to previous years, and investors are naturally keen to put more into cash than they have done so previously. So, are investors right to prioritise cash? To answer this question, we examine the role of cash in the context of inflation, investment horizon and opportunity cost of reinvestment. Despite the current attractiveness of cash deposit rates, cash may not be the best place to be for long-term investors.

Cash is not inflation-proof

Cash offers certainty only in its nominal value but not its real value, which is measured by the resilience of its purchasing power over time. Inflation erodes the purchasing power of any asset. While cash may retain its real value to some extent during periods of low inflation, its purchasing power rapidly diminishes during times of high inflation. In fact, in the past two decades, there were only three isolated years where cash managed to outperform inflation and retain its purchasing power. Even during the era of subdued inflation that preceded the COVID pandemic, deposit rates languished at levels even lower. Despite the recent surge in cash rates, they still fall short of the prevailing higher inflation rates. Consequently, relying solely on cash rates often proves inadequate in terms of providing comprehensive real value protection.

A diversified portfolio could be a better option for long-term investors

It is important to examine the case for cash in comparison to other investment instruments such as equities and bonds. For investors with long-term goals, a diversified 60% equities and 40% bonds portfolio can hold greater potential for generating real returns. If we examine the excess returns of cash vs. an equities and bonds portfolio across varying time horizons, we see that over the past 3, 5, 10 and 20 years, cash savings have delivered negative real returns, thereby diminishing the purchasing power of depositors. While cash managed to retain a level of real value over a 50-year period which will incorporate many different economic cycles, it is still lower than the returns generated by the equities and bonds portfolio. By contrast, the equities and bonds portfolio has consistently delivered returns that outpaced inflation across timeframes of 5 to 50 years, regardless of the prevailing macroeconomic conditions.

Past performance is not a guide to future performance and no investment is guaranteed. You may get back less than you originally invested.

Hidden costs of fixed-term deposits

Investors attracted by the higher rates offered by fixed-term deposits are often locked in for a period of time. One key consideration for depositors in these situations is reinvestment risk, which is the risk of earning lower returns when choosing a new investment after their original fixed-term investment has expired. Once the fixed rate reaches its end, they must either renew at potentially lower rates or explore alternative investment options. However, the financial landscape at that time could differ significantly, and the investor could have missed attractive entry points in equity and bond markets. Historical analysis also reveals that high deposit rates rarely persist over an extended period. Looking at past patterns, in the five previous hiking cycles, the Bank of England typically maintained peak interest rates for an average of 9 months between its last hike and its first rate cut. It is unlikely for higher rates to endure, and investors risk sacrificing long-term opportunities for the allure of short-term ‘guaranteed’ gains.

What does it mean for investors?

While current cash deposit rates may be attractive, investors should carefully evaluate the role of cash in light of inflation, investment horizon, and reinvestment risks. So, whilst holding cash can be a useful tool for investors with a very short investment horizon, a diversified investment portfolio could provide better returns for investors seeking to preserve and grow their wealth over the long term.

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