The two-sided power of enough.
A thoughtful spending change can affect both sides of a FIRE plan. Here is the arithmetic—and the human part it leaves out.
Read the field noteMr. Money Mustache
A READING GUIDE · EnoughA financial independence writer who puts spending choices and savings rate at the center of the conversation. His 2012 early-retirement math essay shows why the relationship between take-home income and living costs matters so much to a simplified retirement model.
The connection to FIRE
Our FIRE connection: define a life worth funding before optimizing a target. A recurring expense affects both what you can contribute today and the spending your portfolio may need to support later.
The useful tension
Housing, disability, caregiving, healthcare, and job security can limit the choices available. A savings rate is a description of a budget, not a measure of someone’s character. Model changes that are feasible and worth making for you.
Which spending supports the life I want, and which spending barely improves it?
Start with the source
- Mr. Money Mustache · The Shockingly Simple Math Behind Early Retirement ↗ (opens in a new tab)
Published January 13, 2012. Read its assumptions alongside the arithmetic.
Take the idea into your own plan.
An independent reading guide by FireFolio, published September 20, 2026. These are our FIRE connections, not a claim that the writer supports every idea in the movement. No affiliation or endorsement. Educational material, not individualized investment advice.