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All About The 4% Retirement Rule

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All About The 4% Retirement Rule

Are you familiar with the 4% rule and how it relates to retirement?

Financial planner Bill Bengen developed the 4% rule in the mid-1990's. Bengen estimated that if a retiree removed 4 percent of the total value of retirement savings in the first year of retirement and withdrew 4 percent in each subsequent year after adjusting for inflation, the retiree should have a nest egg that lasts at least thirty years.

For example, assume you have a $400,000 nest egg. The first year's withdrawal would be 4 percent of $400,000, or $16,000. If inflation over the first year was 2 percent, multiply the $16,000 by 1.02 to get a second-year withdrawal of $16,320. Each year, you re-adjust based on the current inflation rate.

With these figures, the 4 percent rule would have worked reasonably well over the years, but every retiree's situation is different, and adjustments are required. Stock market changes, unexpected expenses, and altered retirement plans may require you to slide the percentage up or down.

The 4 percent rule was developed assuming a standard 60/40 ratio of stocks to bonds. Many retirees have shifted to a higher percentage of bonds to reduce the risk of a stock market crash — meaning their investments are not earning as much as the 4 percent rule's assumption. In addition, current interest rates are far lower than in the 1990s when the 4 percent rule was developed. Bonds generate less income today than they did in the 1990s.

Even with these limitations and corrections, the 4 percent rule has generally provided thirty years' worth of retirement income throughout the years.

Take genetics and medical advances into account. The Society of Actuaries has estimated that as of 2016, men have a one-in-four chance of reaching age 93 and women have the same odds of reaching age 96. If you plan on retiring earlier and are likely to live longer, you may want to adjust the 4 percent rule down to 3-3.5 percent in the early years and re-evaluate later.

The 4 percent rule can be useful in the working years to determine if your retirement savings are on track to meet your goals. Estimate your annual spending in retirement and subtract your anticipated annual Social Security benefits from that number. That's the annual gap that you need to fill with savings.

Let's assume that gap is $40,000. Multiply that number by 25 (the same as dividing it by 4 percent) and the result is $1,000,000. Using the 4 percent rule in retirement, that's roughly the size of nest egg you'll need. If you aren't on track to reach $1,000,000 by your planned retirement date, either increase your savings rate or scale back your retirement plans.

You don't have to use the rule, but you should have a solid plan for apportioning your retirement income. Account for all income sources including Social Security and verify that income falls in line with your spending expectations for retirement. Adjust according to your risk tolerance. If you're constantly worried about running out of money, lower your initial percentage and adjust later if you can.

Have a plan before you retire, be prepared to adjust it during retirement – and then go forth and enjoy your golden years.

A healthy financial future starts with proper investments. Use our guides and tools to find the best investment strategy, and the right products to use.

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The preceding article is from one of our external contributors. It does not represent the opinion of Benzinga and has not been edited.

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