What are the alternatives to the 90/10 rule?

Smart Alternatives to the 90/10 Rule for Smarter Investing

While the 90/10 rule—allocating 90% of your portfolio to stocks and 10% to bonds—may work for aggressive investors, it’s not ideal for everyone. As you grow older, your financial goals and risk tolerance often shift, calling for a more personalized approach.

One widely used alternative is the "age in bonds" rule, which suggests subtracting your age from a base number to determine your stock allocation. For example, if you use 110 as the base, a 40-year-old would invest 70% in stocks and 30% in bonds. At 65, that shifts to 45% stocks and 55% bonds. This method gradually reduces risk as you age, aligning your portfolio with your life stage.

Interestingly, some variations use 100 or 120 instead of 110, depending on life expectancy and market outlook. Using 120 means a more aggressive stance—80% in stocks at age 40—while 100 leads to a more conservative split. These adjustments reflect how personal health, retirement plans, and market conditions can influence smart investing.

The beauty of these rules lies in their simplicity. They offer a clear, adaptable framework without locking you into a rigid strategy. Still, they’re starting points—not set-in-stone formulas. Your actual allocation should also consider your income stability, retirement timeline, and comfort with market swings.

In the end, the right mix isn’t just about numbers. It’s about balance: balancing growth with security, simplicity with personalization. Whether you lean on 110, 100, or a custom number, the goal remains the same—building a portfolio that supports your life, not just your returns.