Receiving 100,000 euros at once is enough to make you dizzy. The first temptation is often to let everything sleep on one accountfor fear of making a mistake, but it’s actually the worst thing to do in the face of inflation. Indeed, investing your money also means protecting it from depreciation! If you have think about your investment horizon and to your risk toleranceand the answer was that you have a profile balance (neither cautious nor too offensive), the ideal is to diversify into several investments.
The balanced profile seeks neither total security nor extreme returns. He accepts a share of measured risk to seek a good return. It also does not require hours of training (although any investment requires information beforehand, you don’t invest in what you don’t understand) or mastering complex stock market instruments.
Secure some capital, but not too much
First step, create what we call a safety mattress available at any time. “On Livret A, I advise between two and six months’ salary for safety, but no more”explains Andrea Tueni, market expert at Saxo Banque, who does not advise trying to touch the ceiling “at all costs”, “because the yield falls below inflation. » Also note that, if the Livret A yields 1.5% since February 2026, the LEP is at 2.5%: check if you are eligible.
For the rest of the secure pocket, the life insurance euro fund takes over. It returned 2.65% on average in 2025 according to the ACPR, with guaranteed capital. Its advantage arrives after eight years of detention: withdrawals benefit from an annual reduction of 4,600 euros in interest for a single person, 9,200 euros for a couple.
Put 100,000 euros to work on the stock market
Once the secure part has been established, a good part of our capital will be able to be invested. “When you have a balanced profile, you can invest in the stock marketprovided you have a long enough time horizon”explains Andrea Tueni. The simplest medium remains the ETF, a fund that replicates an index (CAC 40, NASDAQ, S&P 500, STOXX Europe 600, etc.). One index is particularly diversified: the MSCI World, which follows more than 1,300 large companies from developed countries. It shows around 8 to 9% annualized return over the last forty years. Past performance doesn’t guarantee anything, but it does show that risk smooths out over time.
The PEA is the preferred envelope for housing these ETFs: after five years, the gains escape income tax and are only subject to social security contributions, which rise to 18.6% in 2026.
In addition to this, Andrea Tueni believes that“a balanced profile can also, if it has strong convictions on certain values, go to live actionin the long term. » Before doing so, it is necessary to find out about the companies in question, but also to aim for a holding horizon and the desired selling price (just like the price where possible losses are cut).
Diversify even more with SCPIs and structured products
To avoid depending solely on the stock market, there is also real estate. 100,000 euros are quite limited for a direct rental investment, but there is stone paper: SCPIs. They buy offices, businesses or housing and pay part of the rent, without you having to manage tenants or work. They distributed 4.91% on average in 2025 according to the ASPIM, and more than 7% for the best (often European, with an additional tax advantage).
The downside: entry fees of around 10%, sometimes slow resale, and rents taxed like property income, at your marginal bracket plus social security contributions. Investing in SCPI is therefore only justified over at least ten years of holding.
Finally, Andrea Tueni also mentions structured products, generally available in life insurance. Some are guaranteed, others allow you to take risk “with a fairly attractive return over a time horizon, because they are blocked”. Indeed, structured products are investments over several years, the return of which is conditional on the evolution of an index or a share: they often offer partial capital protection in exchange for a cap on the gain. “But these are sophisticated products that must be understood »warns the specialist. Do not subscribe without having read the documentation and understanding exactly in which scenario you can lose money.
