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What is the 4% rule?


A 3D red block with a large yellow 4% displayed on it


The 4% rule, often referred to as a cornerstone of retirement planning, is like a financial safety net designed to help you enjoy your golden years without the looming fear of outliving your savings. Imagine this: after decades of hard work and diligent saving, you’ve finally reached retirement. Now, the big question is, "How much can I withdraw each year and still make sure my money lasts?"

This is where the 4% rule comes into play.

The Birth of the 4% Rule

Developed by financial planner William Bengen in the 1990s, the 4% rule is based on historical data from U.S. markets. Bengen’s research showed that if a retiree withdrew 4% of their retirement savings in the first year, and then adjusted that amount for inflation each year thereafter, their nest egg would likely last for 30 years or more. This was a game-changer—a simple, actionable strategy to tackle the fear of running out of money.

The Mechanics: Simplicity at its Best

Here’s how it works:

  • Year One: You withdraw 4% of your total retirement portfolio. For example, if you’ve saved $500,000, you take out $20,000 in your first year.

  • Year Two and Beyond: Each year, you increase that withdrawal amount to keep up with inflation. If inflation is 2%, you’d take out $20,400 in the second year.

This approach provides a balance: you’re able to enjoy your retirement funds, but not so fast that you risk depleting them too early.

Why the 4% Rule Matters

The brilliance of the 4% rule lies in its simplicity. It gives retirees a clear, easy-to-follow guideline that can take some of the stress out of retirement planning. It’s based on a blend of stocks and bonds, offering a mix of growth potential and stability.

Caveats: The Rule Isn’t Set in Stone

However, like any rule, it’s not without its critics. Some argue that the 4% rule might be too conservative in certain scenarios, or too aggressive in others—especially with today’s fluctuating markets and longer life expectancies. The key takeaway? The 4% rule is a great starting point, but it should be personalized to fit your unique financial situation and goals.

The Takeaway

The 4% rule offers a straightforward strategy to help you navigate the complexities of retirement. It’s not a one-size-fits-all solution, but it’s a strong foundation to build upon as you plan for a secure and fulfilling retirement. So, as you dream about your future, consider how this rule might help you turn those dreams into reality—one calculated withdrawal at a time and you can count on us at Ndovu to help you in your saving and investment.


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