A small or mid-sized business with structural cash surplus faces a strategic question: should it let that money sit idle in a current account, or seek to put it to work? The answer is never black and white. It depends on the company's financial situation, upcoming projects, its ability to absorb a liquidity shock, and management's risk appetite.
Many business leaders launch into a search for investments without first clarifying their actual constraints. The result: rushed decisions, unsuitable products, or worse, money locked up precisely when the company needs it. Before investing surplus cash, five questions structure the decision. Each one requires a quantified and documented answer.
1. How much immediate liquidity must the company maintain?
The first step is to determine the irreducible safety cushion. This is the amount the company must be able to access at any time, instantly, without constraints, and without risk of capital loss. This amount covers day-to-day expenses, fixed costs, tax and social security obligations, plus a margin to absorb an unexpected event (late customer payment, urgent investment, seasonal working capital need).
A rule of thumb is to maintain the equivalent of two to three months of operating expenses in a current account or a very short-term savings account. For a small or mid-sized business with 150,000 euros in monthly expenses, this represents between 300,000 and 450,000 euros of immediate liquidity. This calculation should be adjusted based on sector, business seasonality, and collection predictability.
Once this cushion is identified, the remainder constitutes the cash surplus available for investment. If a company has 800,000 euros in cash and estimates its liquidity need at 400,000 euros, it can consider investing 400,000 euros. But there's still the question of timeframe.
2. What is a realistic investment horizon?
A cash investment is defined by its lock-in period. The longer the horizon, the greater the access to potentially higher-yielding but less liquid instruments. Conversely, a short horizon requires prioritizing availability over return.
For a business, the investment horizon depends on several factors: visibility on the growth plan, upcoming investment projects, loan repayment obligations, seasonality of the operating cycle. A small or mid-sized business planning to invest in new industrial equipment in twelve months cannot afford to lock up its cash for three years. It must choose between a short-term investment, less rewarding but flexible, or accept keeping part of its cash uninvested.
The classic mistake is investing a surplus in a long-term instrument without verifying compatibility with the company's actual timeline. An investment locked in for two years becomes an operational constraint if a liquidity need arises in the meantime. It's better to segment cash into multiple buckets, each with its own horizon and risk level.
3. Who decides, who controls, who monitors?
Governance is often overlooked, yet it determines both responsiveness and decision quality. Who has authority to commit to an investment? The owner alone, the CFO, the board of directors? Who ensures monthly monitoring of positions? Who approves early exit if market conditions deteriorate?
In a small or mid-sized business, the decision typically rests with the owner, but it's recommended to formalize a written framework. This framework defines maximum amounts for each investment type, authorized durations, acceptable counterparties, loss thresholds requiring collective decision-making. This formalization prevents ad-hoc investments and ensures full traceability of decisions.
Operational monitoring should be handled by a competent person, ideally the CFO or finance manager. This person centralizes operation confirmations, verifies valuations, alerts when deviations from objectives occur. A monthly dashboard tracks cash allocation, investment performance, and upcoming maturities.
4. How will this investment be handled for accounting and tax purposes?
A cash investment has accounting and tax consequences that must be anticipated. Depending on the instrument chosen, accounting treatment differs. A standard savings account generates interest recorded as financial income. Investment in crypto-assets, on the other hand, involves more complex treatment: it may be recorded as financial assets or current assets depending on holding intent, and valuation is subject to specific rules.
From a tax perspective, financial income of a corporation is subject to corporate income tax at the standard rate. Gains and losses realized on financial assets are included in taxable income. For crypto-assets, French tax authorities consider gains realized by a business taxable under the professional capital gains regime. There is no preferential regime or exemption.
Before investing, it's essential to model accounting and tax impact with your accountant. An investment generating apparent gains can prove disappointing once taxes are factored in. Conversely, an investment generating a loss reduces taxable income, which offsets the tax impact of the loss.
5. What capital loss risk can the company accept?
The risk question is central. Every investment carries capital loss risk, including traditional investments. The question isn't whether risk exists, but determining what maximum loss the company can absorb without compromising financial solidity or operational capacity.
For a small or mid-sized business with 500,000 euros of surplus cash, a 5% loss (25,000 euros) can be absorbed without major difficulty. A 30% loss (150,000 euros) could however weaken the structure and jeopardize investment plans. It's up to the owner to set this threshold based on the company's balance sheet, equity, debt capacity, and business predictability.
This acceptable loss threshold directly determines instrument selection. Investment in crypto-assets, for example, exposes the company to high volatility and significant capital loss risk, even when holdings are kept with a regulated provider. This type of investment can only be considered for a limited portion of surplus cash, with explicit risk acceptance by governance bodies. To evaluate platform solidity, reading our article on proof of reserves for crypto exchanges can clarify solvency verification mechanisms.
It's also essential to understand that capital loss risk extends beyond price volatility. It includes counterparty risk (failure of the custodian), liquidity risk (inability to access funds quickly), regulatory risk (legal framework changes), and operational risk (processing error, hacking). A well-structured investment requires analysis of all these risks. Before entrusting your euros to a platform, systematically verify its regulatory status: our guide on how to verify that a platform isn't misleading you about AMF authorization details concrete steps.
Building coherent cash management policy
These five questions form the foundation of coherent cash investment policy. They enable moving from opportunistic logic ("I invest because it's a waste to leave money sitting") to structured logic ("I invest with full awareness, based on my actual constraints").
Before signing a management mandate or opening an account with a provider, the owner must be able to answer these five questions with precise figures. How much immediate liquidity to maintain? How long can I lock up the rest? Who decides, who monitors, who controls? How will this investment be handled for accounting and tax purposes? What maximum loss can I accept?
These answers aren't permanent. They evolve with the company's situation, projects, and market environment. Well-designed cash management policy is policy reviewed regularly, at least annually, and adjusted based on observed results and anticipated needs.
The key is to never invest in haste, under pressure from an intermediary, or by copying others. A good investment is one compatible with the company's actual constraints, approved by governance bodies, and monitored over time. Only then does it strengthen the company's financial solidity, rather than expose it to uncontrolled risks.