Investment Vehicles Explained: Real Returns, Costs, and Regime Impact

An investment is not defined by its stated return — but by what it actually delivers in the regime where it operates. A euro fund yielding 2% is a good investment when inflation is 1% — and a capital destroyer when inflation is 5%. A global equity ETF returning 16% per year is spectacular in a zero-rate, abundant-liquidity regime (2009–2021) — and loses 19% when the regime shifts (2022). A rental property with a 5% gross yield shrinks to 2% net-net after expenses, vacancy, taxes, and borrowing costs — and can turn negative if rates rise and property values fall.

Most investment comparisons make the same mistake: they compare gross nominal returns without incorporating inflation (which determines real return), fees (which silently erode capital), taxation (which reduces effective gains), investor behavior (which systematically underperforms the product held), and the macroeconomic regime (which determines whether product assumptions remain valid). This sub-pillar proposes a functional framework: each investment serves a function within a wealth architecture — liquidity, protection, growth, income — and the relevant question is never “what is the best investment?” but “does this investment fulfill the function I assign to it, in the current regime?”

Livret A: a liquidity tool, not a growth investment

Livret A (current rate 3%, Banque de France, since February 2023) is the most widely held financial product in France — 56 million accounts, €415 billion outstanding (Caisse des Dépôts, 2024). Its immediate liquidity, capital guarantee, and tax exemption make it a cash-management and precautionary tool — not a long-term wealth growth vehicle.

Real return by regime: when inflation is 1% (2015–2019 regime, INSEE) and Livret A yields 0.75%, the real return is -0.25% — slightly negative, but the liquidity cost is low. When inflation is 5.2% (2022) and Livret A yields 2%, the real return is -3.2% — each euro destroys 3 cents of purchasing power per year. When inflation falls back to 2% and Livret A remains at 3%, real return turns positive again (+1%) — Livret A fulfills its function. The function of Livret A is not return — it is liquidity and nominal safety. Using it as a primary long-term savings vehicle assigns it a function it was not designed to fulfill. Full analysis: Livret A: understanding its real function.

Life insurance euro funds: nominal safety that can destroy real capital

Euro funds within life insurance are the second pillar of French household savings — €1.9 trillion outstanding (France Assureurs, 2024). Their promise: a guaranteed annual return (0% floor) and nominal capital protection. In practice, the average return was 1.9% in 2022 (ACPR) — a real return of -3.3% after inflation (5.2%, INSEE). In 2023, the average yield rose to ~2.5% (ACPR) — but remained negative in real terms with inflation at 4.9%.

Annual management fees (0.5–0.8% on average) and social contributions (17.2%) amplify erosion. A euro fund yielding 2.5% gross delivers ~2.1% after management fees, then ~1.7% after social charges — the real net return is even more negative than the gross figure suggests. The function of euro funds is nominal capital safety — and they fulfill that function. But confusing “guaranteed” with “protected” is an error: capital is guaranteed in nominal value, not purchasing power. In regimes where inflation exceeds yield, euro funds destroy real capital — silently, gradually, invisibly on statements. Euro funds within life insurance play an intermediate role between liquidity and return whose relevance varies sharply with rate and inflation regimes.

Stocks and ETFs: returns depend on the regime you enter

The S&P 500 has delivered roughly 10% per year nominal since 1928 — about 7% after inflation (Damodaran, NYU). This figure is accurate on average over 95 years. It is misleading over shorter periods — because dispersion is enormous. The S&P 500 lost 50% in 2008–2009, 34% in March 2020 (in 5 weeks), and 19% in 2022. The Nasdaq lost 78% between 2000 and 2002 — and did not recover its peak until 2015, 15 years later. An investor who bought at the 2000 peak waited 13 years to recover capital in real terms.

ETFs (exchange-traded funds) democratized market access — an MSCI World ETF with 0.20% annual fees offers diversification across 1,500 companies in 23 developed countries. But this apparent simplicity masks deeper structural mechanics: how passive management reshapes market structure and capital allocation is essential to understand what you actually own. Passive management has a hidden cost: concentration. The Magnificent 7 (Apple, Microsoft, Nvidia, Amazon, Meta, Alphabet, Tesla) account for more than 30% of the S&P 500 (S&P Global, 2024) and over 60% of 2023 gains (Goldman Sachs). Buying a “diversified” S&P 500 ETF means allocating 30% of capital to 7 US tech companies — concentration masked by the “diversification” label. The average investor underperforms the market by 1.5% per year (Dalbar QAIB, 2024) — not due to incompetence, but inability to maintain discipline under stress (panic selling) and overconfidence in bull markets (buying at peaks). ETF return and investor return are two very different figures. Full analysis in the Stocks & ETFs pillar.

Rental real estate: the gap between gross yield and real return

A 5% gross rental yield is the most cited figure — and the most misleading. The gap between gross and net yield is 40–50%: non-recoverable expenses (condominium fees, property tax, maintenance, insurance = 1–1.5% of property value/year), vacancy (1–2 months/year on average = 8–15% revenue loss), taxation (rental income taxed at marginal rate + 17.2% social contributions, except special regimes). A 5% gross yield becomes 2.5–3% net — and potentially below 2% net-net after borrowing costs in high-rate regimes. These gaps are directly linked to how real estate prices and yields adjust to credit conditions and macro cycles — as explained in why real estate prices rise and fall.

Rental real estate in the current regime: the risk-free yield (Livret A 3%, IG bonds 4–5%, SCPI 4–5%) offers returns comparable to net rental yields — without illiquidity, without management burden, without concentration risk in a single asset in one city. This is not an argument against real estate — it is an argument for properly evaluating opportunity cost. The real estate vs financial assets comparison cannot be reduced to gross yield comparisons — liquidity, taxation, leverage, and risk profile must be integrated. The Real Estate pillar analyzes valuation cycles.

What past performance tells you — and what it hides

Past performance is the most consulted and most misinterpreted indicator. An 8% annualized return over 10 years says nothing about year-to-year dispersion (the same fund may have returned +30% one year and -20% another), the macroeconomic conditions that enabled it (zero rates, QE, abundant liquidity regimes driving asset prices), or the probability those conditions will recur (they did not in 2022–2023).

Survivorship bias amplifies distortion: funds that underperformed or closed disappear from rankings — average performance of “survivors” is mechanically inflated. Over 20 years, roughly 80–90% of active funds underperform their benchmark after fees (SPIVA, S&P Global). Management fees — even modest ones — compound exponentially via reverse compounding: a 1.5% annual fee gap absorbs roughly 26% of accumulated capital over 20 years. Total cost of ownership (entry fees, ongoing fees, commissions, tracking difference, taxes) is systematically underestimated — yet it is total cost, not gross return, that determines what actually remains.

Active funds, ETFs, direct holdings: three structures, three logics

The investment vehicle determines cost structure, degree of control, and exposure to third-party decisions. An active fund delegates decisions to a manager paid regardless of relative performance — management fees 1.5–2.5%/year (AMF), 80–90% underperform benchmarks over 20 years (SPIVA). An ETF mechanically replicates an index at low cost (0.07–0.30%/year for major indices) but transfers full market and concentration risk to the holder. Direct ownership offers full control but requires analytical skill, time, and discipline that the average investor tends to overestimate (Dalbar QAIB: -1.5%/year behavioral underperformance). Comparative analysis: Active funds, ETFs, and direct securities. No structure is inherently superior — suitability depends on profile, horizon, and market regime.

The macroeconomic regime changes everything

An investment’s behavior does not depend solely on intrinsic features — it varies with the prevailing regime. The anchor of any allocation decision is the risk-free yield: when it is 0% (2015–2021), risk-taking is mechanically rewarded (there is no alternative — TINA, “There Is No Alternative”). When it is 5% (current regime), the required risk premium to hold risky assets increases — and assets that do not deliver sufficient excess return above risk-free become irrational to hold (TARA, “There Are Reasonable Alternatives”).

A long-term bond fund that performed during falling-rate periods (1981–2021: largest bond bull market in history, Federal Reserve, rates 15.8% → 0.5%) became vulnerable when rates rose — 20+ year Treasuries: -31% in 2022 (ICE BofA), worst performance since 1780. A global equity ETF that benefited from 12 years of zero rates delivers very different outcomes under positive real-rate regimes. Evaluating an investment without considering the regime it operates in is like evaluating a boat without considering sea conditions. The Macroeconomics pillar and the Monetary Policy pillar provide the necessary framework.

The content of this sub-pillar does not constitute personalized investment advice under any circumstances. It describes the internal mechanics of major savings and investment vehicles — without value judgments or recommendations.

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