Key Data and Analysis
Inflation impact on 20-year expense projection and FIRE number
| Inflation Rate | $48,000 Today = ? in 20 Years | Real Return at 7% Nominal | Impact on FIRE Number |
|---|---|---|---|
| 2.0% | $71,400 | 5.0% | 25x of $71,400 = $1,785,000 |
| 2.5% | $77,800 | 4.5% | 25x of $77,800 = $1,945,000 |
| 3.0% | $86,600 | 4.0% | 25x of $86,600 = $2,165,000 |
| 3.5% | $95,800 | 3.5% | 25x of $95,800 = $2,395,000 |
| 4.0% | $105,200 | 3.0% | 25x of $105,200 = $2,630,000 |
⚠️Use Real Return for FIRE Planning
Always model FIRE timelines using real (inflation-adjusted) returns. Using 10% nominal return when inflation is 3.5% produces a 6.5% real return — materially different from 10%. The FIRE number and timeline should be calculated in today’s dollars using real returns.
Deeper Analysis
Inflation-resistant portfolio construction for FIRE
| Inflation-Resistant Asset | Allocation % | Inflation Protection Mechanism |
|---|---|---|
| U.S. equity index (total market) | 60-70% | Corporate earnings grow with inflation |
| Treasury Inflation-Protected Securities (TIPS) | 10-15% | Principal grows directly with CPI |
| Real estate (REIT) | 5-10% | Rents grow with inflation |
| Commodities/energy | 5-10% | Direct commodity price exposure |
| International equity | 15-20% | Currency diversification vs. USD inflation |
Calculate Your FIRE Number and Timeline
Enter your expenses, savings rate, and return assumptions to find your FIRE date.