What a 4% Withdrawal Rate Really Means When Social Security Falls Short

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By Michael Williams Published
What a 4% Withdrawal Rate Really Means When Social Security Falls Short

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When Social Security covers only half your retirement spending, the other half must come from somewhere. How you manage that gap determines whether your money lasts 15 years or 30. For someone receiving the 2026 average benefit of $2,071 per month, that means finding another $2,071 each month, or about $25,000 per year, from savings and investments. This isn’t about pinching pennies. It’s about understanding which decisions protect your income stream and which ones quietly erode it.

The most consequential choice isn’t how much you have saved, it’s how you withdraw from those savings. A retiree with $500,000 in investments might feel comfortable taking 5% annually ($25,000) to cover the gap. But over 20 years, a portfolio split between stocks and bonds historically weathers market swings better at a 4% withdrawal rate. That difference, just a single percentage point, can mean the difference between running out of money at 82 or maintaining income through your 90s.

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Photo of Michael Williams
About the Author Michael Williams →

I am a long time investor and student of business, and believe finding good companies that can become great investments is the best game on earth. After 20 years of writing and researching the public markets it is clear that individuals have never had more tools and information to take control of their financial lives. From ETFs and $0 commissions to cryptos and prediction markets there has never been a greater democratization of access to investing. 

I write to help people understand the investments available to them so they can make the best choice for their portfolio, whether they're starting out or looking for income in retirement. 

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