Crypto in Your Wealth: How Much Should You Allocate?

Cryptocurrencies divide opinion. For some, it's the future of finance. For others, it's a speculative bubble. For most people, it's a fuzzy topic they're hesitant to touch.

The question isn't whether crypto is "good" or "bad". The question is: what place should it have in your wealth, if you decide to hold any? How do you integrate it thoughtfully, without betting your financial future on it, and without ignoring it entirely?

This article isn't investment advice. It's a thinking framework to help you make your own decision.

What Crypto Brings to a Portfolio

High Return Potential

This is the obvious one. Bitcoin went from a few cents to tens of thousands of euros in 15 years. Ethereum followed a comparable trajectory. No other asset class has offered such spectacular returns over the same period.

But past returns guarantee nothing — and that's even more true in crypto than anywhere else.

Partial Correlation with Traditional Markets

This is the most interesting argument from a wealth perspective. Cryptocurrencies don't systematically follow stock markets. They can rise when stocks fall, or stagnate during a general euphoria. This partially independent behaviour makes them a diversification tool — as long as you control the dosage.

Our wealth simulation models this correlation at 50% with global economic cycles — well below stocks (90%) or real estate (75%).

Total Accessibility

Unlike real estate or private equity, crypto is accessible to everyone, with no significant minimum amount, 24/7. You can invest €50 or €50,000. It's a low barrier to entry that lets anyone gain exposure.

What Crypto Costs: Volatility

Let's be frank. Crypto is the most volatile asset you can hold.

Bitcoin has lost more than 70% of its value multiple times in its history. Ethereum has experienced drops of 80% and more. Smaller cryptos have lost 95% or simply vanished.

In simulation terms, crypto volatility during a crisis can exceed 70%, with average losses of -60%. During euphoria, returns can reach +120%, but with equally extreme volatility of 90%.

Concretely, what does this mean? If you put €10,000 in crypto today, in a year it could be worth €3,000 or €25,000. Are you prepared to live with that uncertainty?

How Much of Your Wealth?

This is the central question. There's no universal answer, but there are reasonable benchmarks.

The Pragmatic Rule: 5 to 10% Maximum

Most wealth managers who include crypto recommend an exposure of 5 to 10% of total wealth. That's enough to benefit from the upside potential and the diversification effect, without putting your wealth at risk if crypto collapses.

With 5% in crypto, a 60% crypto crash only reduces your net worth by 3%. That's absorbable. With 30% in crypto, the same crash cuts your wealth by 18%. That's a different story.

The "Money You Can Lose" Rule

Even simpler: only put money into crypto that you could lose entirely without it changing your life. If losing €5,000 would stop you paying rent, don't invest €5,000 in crypto. If losing it would be unpleasant but not dramatic, it's a reasonable exposure.

Adapt to Your Profile

Young, no mortgage, high risk tolerance — up to 10-15% can be justified. You have time to ride out the cycles.

In a couple, with a mortgage, planning for children — 3 to 5% maximum. Your priority is stability.

Approaching retirement — 0 to 3%. Crypto volatility is incompatible with a short-term capital need.

Which Cryptos?

Without getting into investment advice, a few common-sense principles:

Bitcoin and Ethereum together represent over 60% of the crypto market capitalisation. They're the most liquid, the most followed, and the ones with the most track record. For a wealth allocation (not speculation), they're the most natural choices.

Altcoins (everything else) are riskier. Some offer interesting innovations, but many will disappear. If you hold them, consider them a high-risk portion within your already risky crypto pocket.

Stablecoins (USDT, USDC) aren't an investment — they're liquidity tools within the crypto ecosystem. They provide neither returns nor diversification.

Crypto Taxation

Tax treatment of crypto varies significantly by country. In France, capital gains on crypto are subject to a flat tax of 30%. In the UK, crypto is subject to capital gains tax. In many countries, the tax event is triggered when converting to fiat currency, not when trading between cryptos.

Key points to remember:

• Know what triggers a tax event in your jurisdiction
• Track your cost basis carefully — platforms don't always do this for you
• Declare accounts held on foreign platforms where required
• Rules evolve regularly — check the latest provisions

This is an area where mistakes can be costly. When in doubt, consult a professional.

Common Mistakes to Avoid

Investing during euphoria. When Bitcoin hits a new all-time high and everyone's talking about it, it's often the worst time to buy. Wealth investing is done with a cool head, not in a frenzy.

Investing more than you can afford. We've said it, but it bears repeating. The allure of quick gains pushes people to overweight crypto. It's the number one cause of crypto-related financial stress.

Not tracking your overall allocation. If your cryptos triple in a year, their share of your wealth might go from 5% to 15%. Without rebalancing, you're overexposed without knowing it.

Ignoring security. With crypto, it's "your keys, your money". A lost password, a hacked platform, a phishing attack — operational risks are real and aren't covered by the usual banking guarantees.

Conclusion

Cryptocurrencies are neither a miracle nor a scam. They're unique assets, with a distinctive risk-return profile, that can have a place in a diversified portfolio — as long as you control the exposure.

The key is proportion. Not 0%, not 50%. Something in between, adapted to your situation, your risk tolerance, and your time horizon. And above all, integrated into a global view of your wealth — not managed in isolation, disconnected from the rest.