Book A remains a widely used investment because it is simple, available at any time and exempt from tax. In the face of inflation, the real question is more precise: is this return still enough to preserve the purchasing power of the savings placed?
The answer depends mainly on the difference between the rate of Book A and the rise in prices. When inflation exceeds this rate, saving increases in euros but loses real value. When Book A remains above inflation, capital is better protected. It's thatactual returnYou have to look.
Book A and inflation: real yield is the figure to watch
Book A is a net rate. Interest is not subject to income tax or social contributions. This is a net benefit over many taxable investments. But this rate alone is not enough to judge the performance of savings.
Book A and Inflation Calculator
Assess the real impact of inflation on your savings.
Note: This calculation uses annual compound interest. The real value represents what your final capital could buy today, given the monetary erosion.
The right reflex is to compare theBook rate Ainflation. If Book A earns 1.7% and prices increase by 0.8%, the real yield is positive. If Book A earns 2.4% but inflation reaches 4.9%, your money loses purchasing power despite interest payments.
A concrete example in 1,000 euros
With 1 000 euros placed on a Book A paid at 1.7%, you get 17 euros interest in a full year, excluding effects of 15 euros. If, at the same time, prices increase by 0.8%, the average cost of your spending basket increases less quickly than your interest: your savings keep its value better.
On the other hand, with an inflation rate of 4.9%, these 17 euro interest rates do not offset the general price increase. The bank balance is higher, but what it allows to buy decreases. This is the main limit of Book A in periods of high inflation: it protects nominal capital, not always thepurchasing power.
Recent rates show a very variable coverage by year
Book A does not have the same role depending on the economic context. When inflation is high, its rate may lag behind the rise in prices. When inflation slows down, it can become more protective, especially if its rate remains above the observed price trend.
Book A and SARA rates: new official figures· See the updated rates of pay for Book A and SARA effective August 1, 2026.
| Benchmark | Figure | Reading for savers |
|---|---|---|
| Inflation 2023 | 4,9 % | Book A had difficulty offsetting the price increase. |
| Rate of Book A on February 1, 2025 | 2,4 % | A still comfortable rate, but compared to real inflation. |
| Average rate of Book A in 2025 | 2,17 % | Interesting net return for cash savings. |
| Inflation 2025 | 0,8 % | The actual yield is becoming positive. |
| Rate of Book A on August 1, 2025 | 1,7 % | The rate drops but remains above inflation by 0.8%. |
| Book A rate on 1 February 2026 | 1,5 % | Remuneration is falling further, in a context of low inflation. |
These figures recall a simple point: a fall in the rate of Book A is not necessarily bad news if it accompanies a sharper fall in inflation. What matters is the gap between the two. A Book A at 1.7% with inflation at 0.8% protects better than a Book A more remunerative in an economy where prices are growing much faster.
How the Book A rate is set
The rate of Book A is fixed semi-annually, on the recommendation of the Banque de France. The regulatory formula takes into account two main parameters: non-smoking inflation and interbank rates, including short-term market conditions. The result can then be rounded or adjusted in exceptional circumstances.
Why the rate drops when inflation slows down
Book A is not an investment whose yield is freely decided by each bank. It follows a regulated logic, thought to reflect the economic environment. When inflation slows down, the formula usually leads to a fall in the rate. This may disappoint savers, but it is consistent with the product's objective: to provide a secure remuneration, without seeking to beat all other investments on a sustainable basis.
It should also be recalled that Book A isLiquidfree of charge. You can withdraw your money quickly, without risk of capital loss. This availability has value, especially for precautionary savings. In return, returns are generally lower than those of more risky or less available assets.
The right reflex: compare the dynamics, not just the displayed rate
Book A works as a balancing point in a saving strategy: it should not carry the full weight of your assets, but it stabilizes overall. Around him, it is possible to organize other choices according to the time horizon: liquidity for unforeseen events, regulated safety booklets, long-term investments to seek more yield. This logic avoids a frequent error: judging Book A as if it had to be both safe, motor of performance and perfect shield against inflation. Its main role remains to ensure an accessible and readable basis.
Booklet A, SARA, LDDS: Which booklet best protects against inflation?
Book A is not the only regulated book. SARA, or Popular Savings Booklet, is often more protective against inflation, but is reserved for those who respect income conditions. The LDDS, on the other hand, operates in a way close to Book A in terms of remuneration, with the same saving logic available.
| Product | Main asset | Limit to know |
|---|---|---|
| Book A | Secure, liquid, net tax savings, very accessible | Imperfect protection if inflation exceeds its rate |
| SARA | Higher rate: 2.7 per cent on 1 August 2025, 2.5 per cent on 1 February 2026 | Opening subject to income conditions |
| LDDS | Flexibility close to Book A, availability of funds | Performance generally aligned with Booklet A |
| Investments in shares | Potential average yield of 4-5 % per year over long periods | Capital loss risk and long horizon required |
For eligible savers, SARA often deserves to be filled before significantly increasing its Book A because its rate is higher. With 2.7% on 1 August 2025 and 2.5% on 1 February 2026, it offers a better margin of protection when inflation is low or moderate.
Book A, however, retains a universal advantage: it is owned by about 57 million people. Its simplicity makes it a tool for daily saving management, even when it is not the most efficient.
What strategy should be adopted so as not to allow inflation to sniff its savings?
The right strategy is not to close your Book A as soon as its rate drops. Rather, it is to give him the right place. For a security reserve, it remains relevant: money is available, guaranteed, untaxed and easy to mobilize in case of unforeseen expenditure.
Dimensioning your precautionary savings
A Livret A can accommodate the sums necessary for unforeseen events: repair, exceptional invoice, professional transition, family expense. The challenge is not to leave all its assets there for a long time if the aim is to increase its capital over several years. Too much money on a liquid medium can suffer real erosion when inflation returns.
Prioritize booklets according to profile
If you are eligible for SARA, it may be wise to use it as a priority for secure savings, as its remuneration is higher than that of Book A. Then, Book A and LDDS can complete the liquidity pocket. For money you don't need in the short term, other solutions can be explored, accepting different constraints: investment duration, taxation, volatility or risk of loss.
The practical rule is simple: always compare three elements before deciding where to place your money. First, the expected net return. Second, inflation, which determines real yield. Well, your investment horizon. A euro for use in three months does not need the same support as a euro invested for ten years.
In summary, Book A can protect savings from inflation when its rate is higher, as in an inflation period of 0.8% at a rate of 1.7%. But it does not constitute automatic protection. Its real strength remains elsewhere: security, liquidity, tax-freeness and the role of a foundation in a balanced financial organization.