Posted by James Financial Services Inc

What is the 4% Rule?

What is the 4% Rule?

The 4% rule is a common rule in retirement planning to help you avoid running out of money during retirement. It is said that you can comfortably withdraw 4% of your savings in the first year of your retirement and adjust that amount for inflation each year after that, without running the risk of running out of money for at least 30 years.

It sounds good in theory and might work for some in practice, but there is no one right answer for everyone and if you blindly follow this formula, regardless of whether it is suited to your circumstances, you could find yourself short of cash prematurely, or you could end up with a financial surplus that you could have spent on things that appeal to you.

When to use the 4% rule?

The 4% rule assumes that your investment portfolio contains approximately 60% stocks and 40% bonds. It also means that you will maintain your level of retirement spending. If both are true for you and you want to follow the simplest possible withdrawal strategy, the 4% rule might be right for you.

However, you have to keep in mind that the 4% rule is an old rule. So pursuing it doesn't necessarily guarantee that you won't run out of funds. It may work depending on the return on your investment, but you can't be sure because it was developed when bond interest rates were much higher than they are now.

When the 4% rule might be the wrong choice

If you want to be 100% sure that you don't run out of money, following the 4% rule is probably not the best option. Not only is this an old rule, but it also doesn't even take into account changes in market conditions. For example, in times of recession, it is probably not advisable to increase the value of withdrawals; you can reduce them slightly. But when the markets are doing well, you can comfortably withdraw over 4%.

If you have chosen an asset allocation other than 60% equities and 40% bonds, you should also avoid following the 4% rule, as this is the combination of assets on which the rule is based. When you invest differently, your portfolio will behave differently. For example, higher investment in bonds can lead to slower investment growth because bonds generally do not pay back on stocks. This problem is worsened by the fact that bond interest rates were much higher when the 4% rule was developed than they are today.

Finally, if you expect your spending habits to change during retirement, the 4% rule is not the best approach. Most retirees are more active in early retirement. They often spend more time in their leisure time or traveling, and their expenses tend to be higher. Spending then falls halfway through retirement before rising again due to end-of-life health care costs. The 4% rule is not dynamic enough to explain these lifestyle changes. This limits you to a fixed amount, which can be very low in the early years and very low in subsequent years.

What are the pros and cons of the 4% rule?


  • The rule is easy to follow. 

  • You will have a predictable and stable income. 

  • Traditionally, the 4% rule protects you against a lack of funds. 


  • It is not dynamic enough to respond to changes in lifestyle.

  • The 4% rule does not respond to market conditions.

  • Therefore, it is obsolete and can no longer guarantee that your account will not run out of funds.

What are the alternatives to the 4% rule?

Other pension withdrawal strategies are slightly more aggressive than the 4% rule.

Boston College's Center for Retirement Research has proposed a system in which your annual pension withdrawals are based on the IRS's RMD (Required Minimum Distribution) Tables. RMDs are the amounts you need to start withdrawing from all retirement accounts except Roth IRAs after age 72 unless you are still working and have no more than 5% of the company you work for. Divide your account balance by the distribution period close to your age in the RMD table to calculate the amount you need to withdraw each year.

The Retirement Research Center used this as a starting point and calculated the annual withdrawal amounts as a percentage of the total account balance from age 65 when it indicates that you can safely withdraw 3.13% of your retirement savings, up to age 100, when you can withdraw 15.67%.

This formula has some of the same flaws as the 4% rule. For example, changing market conditions can affect what you can safely withdraw, and you are limited to smaller amounts when you are younger and may want to spend more. But you can compensate by spending the accrued interest and dividends above the recommended percentages.

An even better approach is to ignore conventional strategies altogether. Instead, talk to a financial advisor about your retirement plans and how they will affect your spending habits. A consultant will help you determine how much you need to save and how much you can comfortably spend each year to avoid running out of money soon.

Bottom Line

The 4% rule doesn't necessarily guarantee that you won't run out of money when you retire. It is based on outdated assumptions about the interest you might receive on bond investments.

While the 4% rule offers a straightforward approach to determining how much you can withdraw from retirement accounts, it is not necessarily the best approach. Instead, you need to develop a personalized withdrawal strategy that's right for you.

The 4% rule can be a useful starting point in determining how much to spend each year on retirement, but be aware of its limits. Your needs and goals for the past few years are dynamic, and you need a retirement plan that is too.



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