Ask ten financial advisors how much gold belongs in a portfolio and you will get ten different numbers — anywhere from "zero" to "twenty-five percent." That spread is not because some of them are wrong. It is because the right answer depends on what the rest of the portfolio looks like, what currency you live in, and what you are trying to protect against.

The classic 5-10% rule

The most-quoted range across mainstream financial planning textbooks. The argument is that 5-10% of a diversified portfolio in gold provides a meaningful counterweight to equity-market drawdowns and currency risk, without giving up too much long-term growth.

It is a defensible default for an investor whose portfolio is mostly stocks and bonds in a stable major currency. Below 5% the gold position is too small to make a real difference during a crisis; above 10% you are giving up too much equity upside in the long run.

Why some allocations are much higher

The Permanent Portfolio (Harry Browne's 1980s idea) puts 25% in gold, alongside 25% stocks, 25% long-term bonds, and 25% cash. The logic: each quarter does well in a different macro environment, so the portfolio is genuinely all-weather. The cost is forgone growth in boom years; the benefit is famously low drawdowns.

Ray Dalio's "All Weather" portfolio also lands around 7-15% in gold and other commodities. Some Gulf-based family offices run 20-30% gold because their home market lacks deep bond markets, and gold fills that role.

The factors that should push you higher

  • Currency risk. If you live in a country whose currency has lost 30%+ against the dollar in the last decade, the case for higher gold goes up. Gold is an effective hedge against your own currency's erosion.
  • Concentrated wealth in equity or real estate. If your job, your house, and your investment portfolio are all tied to the same economy, gold's low correlation provides real diversification.
  • Limited bond options. Many GCC investors have shallow local bond markets and avoid foreign bonds for currency reasons. Gold often steps into the role bonds would play in a developed-market portfolio.
  • Geopolitical or political concern about wealth being seized or sanctioned. Physical gold in your control is uniquely resistant.

The factors that should push you lower

  • Young age + long horizon. Over 30+ years, equities have historically beaten gold by a wide margin. A 25-year-old in a stable currency saving for retirement does not need 20% in gold.
  • Strong, stable home currency. Swiss investors holding Swiss francs need less gold than Argentinians holding pesos.
  • Already-diversified hedges. If your portfolio already has Treasury bonds, foreign-currency exposure, real estate, and international stocks, the marginal benefit of more gold drops.

A practical decision framework

Pick your "structural" gold position — the amount you would hold regardless of price — and stick to it. For most readers, that number is 5-15% of investable assets, biased toward the higher end if any of the upward factors above apply.

Then rebalance, not chase. If gold doubles and the allocation goes to 25% of the portfolio, trim back to your target. If gold crashes and the allocation falls to 5%, buy back to target. This forces you to sell into strength and buy into weakness — the opposite of what most people do naturally.

Gold's job in a portfolio is to do well when other things do badly. Sizing it for that role, not for its own returns, is the key.

The bottom line

There is no single right answer. But there is a clearly wrong answer — owning either zero gold (no protection at all) or 50%+ in gold (giving up too much of the world's productive return). Inside the 5-20% range, the exact number matters less than picking one and holding to it consistently across cycles. A boring 10% allocation, rebalanced every year, beats a brilliant timing strategy almost every time.