Robert Brokamp, Team Hidden Gems
Knowing how much income you'll need in retirement is a key variable in determining how much you need to have saved before you stop working. But retirement isn't just one financial goal; it's a series of annual goals -- the amount you need in the first year of retirement, then how much you need in the second year, and then the third, and so on.
The default assumption is that retirees need their income to go up every year along with inflation. We see this assumption in most retirement calculators, from most financial planners, and in most retirement research -- including the research underpinning ye olde 4% rule.
However, the truth is that spending of the average retiree does not go up along with inflation. As we get older, we do less and we spend less.
This has been documented by many studies, including in a recent report by David Blanchett, head of retirement research at Prudential Financial. The upshot: When assuming real-life retirement spending trajectories in retirement plan calculations, we may not need to save as much before retiring, and we may be able to withdraw more once we've retired. That's good news.
To learn more, listen to my recent interview with Blanchett on the Motley Fool Hidden Gems Investing podcast.