Lifestyle Inflation
Spending rising alongside income, so that a raise leaves the savings rate unchanged.
When spending rises in step with income, the savings rate stays flat no matter how much the salary grows. Two people earning $85,000 and $170,000 can be accumulating at the same rate and reach retirement with the same balance.
Economists have studied the underlying mechanism as hedonic adaptation: the satisfaction from an upgrade fades toward the prior baseline, while the higher cost persists. That is a description of how the effect works, not an argument that upgrades are not worth making. Some plainly are.
The compounding detail is that raised spending raises the retirement target too. Every additional $1,000 of annual spending adds roughly $25,000 to the portfolio needed to sustain it at a 4% withdrawal rate, so the effect lands on both sides of the calculation at once.
Worked through
A $15k raise, one year later
Income moved from $85k to $100k. The following year of spending shows where it went.
- Gross raise
- +$15k
- Spending change
- +$12k
- Savings change
- +$3k
- Share absorbed
- 80%
Four fifths of the raise went to spending. The extra $12k of annual expense also raises the eventual retirement target by roughly $300k.
Related in Financial Profile & Comparisons
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