Will We Spend Less in Retirement?

About nine years ago, when Mr. ThreeYear and I began to wise up about our finances, we visited a financial planner and filled out a detailed survey. We didn’t have many assets to speak of, at the time, since we’d just gotten out of debt, but if the dude had been wise, he would have nurtured the relationship with us because he could have had very good future clients. He was not and we now manage our own investments, a scenario I am more than happy with. 

Even so, it was interesting to hear his predictions that we’d need about 80% of our income at retirement. Where did that number come from? In the years that followed, as I filled out online retirement calculators, I heard the figure repeated. 

Then, I began to learn more about the 4% rule, the oft-cited retirement rule-of-thumb (based on the Trinity Study) that cites evidence that if you withdraw 4% of your portfolio per year in retirement, adjusted annually for inflation, then your portfolio should easily last you 30 years (or more). Another way to look at the rule, popularized by the incontrovertible Mr. Money Mustache, is that you’ll need 25 times your annual spending invested in order to retire. This rule assumes that you’ll keep your spending relatively level in retirement, that is, you’ll spend a similar amount in retirement as you do now.  

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