$100K in Boston = $52,469 in Lafayette
Your $100K salary in Boston (COL 162) has the same purchasing power as $52,469 in Lafayette (COL 85). Lafayette is cheaper — your money goes 48% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Boston $100K | Lafayette $100K (same salary) |
|---|---|---|
| Monthly take-home | $5,904 | $5,963 |
| 1BR rent | $3,000 | $1,100 |
| Groceries | $418 | $361 |
| Transport | $90 | $42 |
| Utilities | $185 | $208 |
| Internet | $70 | $58 |
| Left after essentials | $2,141/month | $4,194/month |
Frequently asked questions
What is $100K in Boston equivalent to in Lafayette?
$100K in Boston (COL index 162) has the same purchasing power as $52,469 in Lafayette (COL index 85). That's 48% less than your current salary.
If I move from Boston to Lafayette keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to Lafayette, you'd have $2,053 more per month after core expenses — because Lafayette is cheaper than Boston.
How is the salary equivalent calculated?
The equivalent salary is calculated by multiplying your current salary by the ratio of the two cities' overall cost of living indices: $100K × (85 ÷ 162) = $52,469. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Boston to Lafayette
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only