What is the safest investment for your cash?

If your business has extra cash, you might wonder where it’s safest to keep it. What counts as "safe" can vary, since every cash investment carries some risk. Understanding the real trade-offs can help you decide where to put your company’s money.

Businesses don’t always view safety the same way as individual savers. It’s important to see investing from both the personal and the corporate perspective. Knowing how to protect your company's cash can be key to understanding how safe your investments are.

What are safe investments?

A safe investment focuses on protecting your money, with earning returns as a secondary goal. This often means low market risk, working with a reliable financial partner and being able to access your cash when you need it. No investment is completely risk-free, but some are much safer than others.

Safety comes as a range of protections. Government-backed investments are among the safest, while owning shares in a single company is considered riskier. Most businesses choose options closer to the safe end because protecting cash matters more than chasing higher returns. Even the safest investment can lose value over time if it doesn’t keep up with inflation, but that’s different from losing your original money.

Why safety looks different for a business

In the UK, the FSCS (Financial Services Compensation Scheme) protects individual savers by covering deposits up to £120,000 per person, per institution. Companies, as separate legal entities, have the same £120,000 limit per institution. For businesses with cash balances in the five- or six-figure range, this limit offers real protection.

The situation changes as balances grow. If a company has £10 million spread across ten banks, only £120,000 at each bank is protected, which means only 12% of the company's cash is protected. The rest relies on each bank’s financial strength, not on a compensation scheme.

For large balances, real protection comes from spreading cash across several counterparties and picking those with strong credit profiles. Schemes like the FSCS are not designed for sums this large.

Where can businesses put cash safely?

Bank deposits

A regular bank deposit is the most familiar and easiest option to set up. However, your money isn’t secured, so you rely on the bank staying solvent. Fixed-term deposits usually pay more than easy-access accounts, but locking up your cash for longer only makes sense if you’re sure you won’t need it early.

Opening accounts with several banks spreads the risk, but each new bank adds more onboarding and paperwork. That’s why many businesses prefer a single platform that gives access to multiple banks at once.

Money market funds

Money market funds pool cash from many investors and spread it across a mix of short-term, highly rated investments. This variety is their main safety feature, since a single default won’t have a big impact. Most funds also offer same-day or next-day access, which is helpful if your business needs cash quickly.

The FSCS does not cover money market funds. Their safety comes from diversification and credit quality, not from a compensation scheme.

Government-backed instruments

Treasury bills and gilts are direct claims on the UK government, which is why they’re seen as the UK's safety benchmark. Government-secured products work similarly, using government-issued securities as extra backing and holding them with an independent custodian.

These options usually pay lower returns in exchange for more protection. This trade-off suits businesses that value safety over taking on more risk.

Investments and tri-party repo

Secured investments use collateral to protect you if the other party defaults. Tri-party repo is similar, with an independent agent holding and managing the collateral during the deal.

Both options let businesses invest with a counterparty while limiting risk if that party has problems, and still provide access to competitive returns.

How to reduce risk further

Spreading cash among different counterparties, investment types, and timeframes reduces risk if one fails. The collapse of SVB showed treasury teams everywhere how important this is.

Credit quality matters as much as diversification. Checking a counterparty's credit rating before investing helps you compare options based on risk, not just by yield. Knowing how that risk is measured makes your comparison more accurate.

Matching maturities to when you actually need the cash reduces risk too. Laddering terms to known payment dates avoids locking money away longer than necessary while keeping it from sitting idle.

A written treasury policy helps keep these decisions consistent as your team and cash balance grow. It also gives everyone a clear reference for how much risk the business is willing to accept. That judgement should not depend on whoever is making the call that day.

Investments for retail businesses

If you search for "safe investments," you’ll find lots of content aimed at individual savers: Premium Bonds, annuities, municipal bonds in the US, questions about specific retail brokers. These products are useful for personal savings, but they’re designed for individual allowance limits and long-term retirement planning, not for managing company cash.

Not everything labelled as safe actually protects your money in the same way. Shares, unrated corporate debt, and most retail investment products can lead to real losses. Term deposits, government bills or secured cash products don’t carry the same risks. What matters most is what’s behind the label, not the label itself.

Even for personal savings, government backing is one of the safest features. Premium Bonds are backed by the UK government, which is why gilts and government-backed cash products are also attractive for businesses.

Managing your investments wisely

There’s no single answer for what is safest. Bank deposits, money market funds, government-backed instruments, and secured investments all protect your money in different ways. The best approach is often to build a portfolio across these investments. You may even want to balance reliable, low-yield investments with a few riskier ones.

TreasurySpring checks the credit quality of every counterparty before listing them. This way, treasury teams can invest surplus cash securely across more than 120 counterparties and nine currencies. Contact our team to learn how we can help you invest your surplus cash safely.

*TreasurySpring’s blogs and commentaries are provided for general information purposes only, and do not constitute legal, investment or other advice.