Warren Buffett 70/30 Rule Explained in Plain English

If you’ve ever heard Warren Buffett talk about a 70/30 split, you might wonder what it really means for you. In short, it’s a simple way to split your money: 70% in stocks and 30% in safer assets like bonds or cash. The idea is to chase growth with most of your cash while keeping a safety net that protects you when markets wobble.

Why 70/30 Works for Most People

Buffett isn’t a fan of complex formulas. He looks for a balance that lets you benefit from the stock market’s long‑term rise without losing sleep over short‑term drops. By keeping 30% in low‑risk holdings, you reduce the chance that a market dip wipes out a big chunk of your portfolio. At the same time, the 70% in stocks gives you enough exposure to earn solid returns over time.

Most beginners find the 70/30 split easier to follow than trying to pick exact percentages for dozens of assets. It’s a rule of thumb, not a strict law, so you can tweak it as your life changes – like when you get a raise, buy a house, or head toward retirement.

How to Put the Rule Into Action

1. Check your current savings. Add up all the money you could invest – pensions, ISA, regular savings, anything you’re not using for daily expenses.

2. Pick a stock fund. If you’re not comfortable choosing individual shares, a low‑cost index fund that tracks the FTSE 100 or S&P 500 works well. Put 70% of your investable cash into that fund.

3. Choose a bond or cash option. A government bond fund, a high‑interest savings account, or a short‑term cash ISA can hold the remaining 30%.

4. Rebalance once a year. Markets move, so your split can drift. If stocks grow a lot, you might end up with 80% in stocks. Sell a little and move the excess back into bonds to keep the 70/30 balance.

5. Stick to the plan during market swings. When headlines scream “stock market crash,” it’s tempting to pull out the 70% and hide under the 30%. Remember, the rule is meant to keep you in the game, not bail you out.

That’s it – five easy steps. No fancy jargon, just a clear plan you can start today.

People who follow the 70/30 rule often see smoother growth compared to those who go 100% stock or keep everything in cash. Over a 20‑year horizon, the stock portion still delivers most of the gains, while the bond side cushions the ride.

Of course, the rule isn’t set in stone. If you’re close to retirement, you might flip to 60/40 or even 50/50 to protect your nest egg. If you’re young and can handle risk, you could try 80/20. The key is to start with a simple split and adjust as life changes.

Bottom line: Warren Buffett’s 70/30 rule is a practical shortcut for anyone who wants growth without constant panic. Grab a low‑cost stock fund, pair it with a safe bond or cash option, and keep the balance. Over time, you’ll likely see steady progress toward your financial goals.

Warren Buffett 70/30 Rule Explained: A Practical Guide to Smarter Investing
  • By Landon Ainsworth
  • Dated 22 Jul 2025

Warren Buffett 70/30 Rule Explained: A Practical Guide to Smarter Investing

Curious about Warren Buffett's 70/30 rule? Get the facts on what it means, why it matters, and how you can use this famous approach in your own investing.