investing cash to boost its yield

Cash is essential to cover immediate expenses and emergencies but yours may not be reaching its full potential.

Key Takeaways

• The best way to manage excess cash depends on your personal goals, time horizon, desired returns and comfort with risk.

• Several lower-risk options, such as high-yield savings accounts, fixed-term deposits, government securities and money market funds may offer better yields than standard bank accounts while keeping cash relatively accessible.

• Protection levels vary: In the US, FDIC insurance covers bank deposits up to standard limits; in Europe, national deposit guarantee schemes typically protect up to €100,000 per depositor per institution. Investment products like money market funds are generally not insured but may carry other safeguards (e.g., SIPC in the US or national investor compensation schemes in Europe).

• Always consider fees, liquidity needs, tax implications and current interest rate environments.

What to Do with Excess Cash: Options for US and European Investors

The idea that “cash is king” holds some truth, maintaining an emergency fund and healthy balances in checking or savings accounts is generally sound advice. However, when you have excess cash beyond immediate needs, keeping it all in a low-yielding traditional savings account may mean missing opportunities for modest growth with relatively low risk.

If you’re looking for ways to earn more on idle cash while keeping it fairly liquid and conservative, several options exist. The products below focus on lower-risk, relatively accessible choices. They are not suitable for everyone and other higher-risk investments (such as stocks) may be more appropriate for longer time horizons.

Important Regional Note : Product availability, yields, tax treatment and protection schemes differ between the US and Europe (and even among European countries). US options often emphasize FDIC insurance and products like Treasuries or brokered CDs. In Europe, savers commonly use high-yield savings accounts via digital platforms, fixed-term deposits (Festgeld/Termindeposits), government short-term securities or money market funds. Deposit protection is typically provided by national schemes up to €100,000. Consult local regulations and a qualified advisor for your specific situation.

High-Yield Savings Accounts or Money Market Accounts: Many brokerage or wealth platforms offer high-yield savings accounts or money market accounts that pay competitive interest rates. In the US, these are often FDIC-insured like traditional savings accounts. In Europe, similar high-yield options are available through digital banks or brokers (sometimes sweeping uninvested cash into protected accounts or liquidity funds).

These accounts may require a higher minimum deposit but can provide better returns than standard savings. Many allow limited monthly withdrawals for flexibility. Rates can change frequently, so compare current offerings.

Certificates of Deposit (CDs) or Fixed-Term Deposits: In the US, bank CDs are FDIC-insured deposits that lock in a fixed amount for a set period (e.g., 3 months to several years) in exchange for a predetermined interest rate. At maturity, you receive your principal plus interest. Early withdrawal usually incurs a penalty.

Brokered CDs: (available through US brokerage accounts) may offer higher yields and more flexibility than traditional bank CDs, but they come with added complexity. They can be traded on the secondary market before maturity (subject to price fluctuations), and many are callable by the issuing bank.

In Europe, the closest equivalents are fixed-term deposits or term savings accounts offered by banks across the EU (often accessible via platforms like Raisin). These provide fixed rates for a chosen period and are covered by national deposit guarantee schemes up to €100,000. Early access is typically restricted or penalized.

CDs or fixed deposits can be useful when rates are expected to decline, as they let you lock in current yields for a known period.

Government Securities: (Treasuries and Equivalents) US Treasury bills (T-bills) are short-term government securities (maturing in one year or less) backed by the full faith and credit of the US government. They are considered very low-risk and highly liquid, with no state tax on interest in many cases.

In Europe, equivalents include short-term government bills such as German Bubills, French BTFs, or other national Treasury certificates. Eurozone government short-term debt from highly rated countries is often viewed as very safe. These can be purchased directly or through ETFs/funds focused on ultra-short government bonds.

Money Market Funds: Money market funds are mutual funds that invest in short-term, high-quality debt securities (e.g., government bills, commercial paper or repos). Many aim to maintain a stable net asset value (around $1 or €1 per share) and distribute income as dividends.

• In the US, these are not FDIC-insured, but investors may have SIPC protection in brokerage accounts (up to standard limits) in case of broker failure. Government-focused money market funds carry very low credit risk.

• In Europe, money market funds (often UCITS-regulated) are widely used for cash management. They are not covered by deposit guarantee schemes but are subject to strict liquidity and diversification rules. Protection against broker failure varies by country (typically lower limits than SIPC).

Money market funds offer daily liquidity in most cases but can experience minor fluctuations in value, especially in stressed markets.

Short-Term Bond Funds: If you can commit cash for a slightly longer period (e.g., 1–3 years), short-term bond funds or ETFs may be worth considering. These invest in bonds with shorter maturities, aiming for income and some capital stability.

• Short-term government bond funds focus on US Treasuries or European government debt and generally carry low credit risk.

• Short-term corporate bond funds include company-issued debt and may offer slightly higher yields but with added credit risk.

These funds have more price volatility than pure cash equivalents due to interest rate changes, though shorter maturities help limit this risk. They are not insured.

The Bottom Line

Excess cash can serve as a stable anchor in your portfolio, providing security and flexibility. Exploring higher-yielding but still relatively conservative options, such as high-yield savings, fixed deposits, government securities or money market funds may help enhance returns without taking on significant risk.

Yields, liquidity terms, fees and tax implications vary by product, country and current market conditions. There is no one-size-fits-all solution. Consider your time horizon, liquidity needs and overall financial plan. For personalized guidance, consult a qualified financial advisor familiar with the rules in your country.