$40K in Ann Arbor = $32,381 in Lafayette
Your $40K salary in Ann Arbor (COL 105) has the same purchasing power as $32,381 in Lafayette (COL 85). Lafayette is cheaper — your money goes 19% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Ann Arbor $40K | Lafayette $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,592 | $2,585 |
| 1BR rent | $1,750 | $1,100 |
| Groceries | $384 | $361 |
| Transport | $65 | $42 |
| Utilities | $162 | $208 |
| Internet | $63 | $58 |
| Left after essentials | $168/month | $816/month |
Frequently asked questions
What is $40K in Ann Arbor equivalent to in Lafayette?
$40K in Ann Arbor (COL index 105) has the same purchasing power as $32,381 in Lafayette (COL index 85). That's 19% less than your current salary.
If I move from Ann Arbor to Lafayette keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Lafayette, you'd have $648 more per month after core expenses — because Lafayette is cheaper than Ann Arbor.
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: $40K × (85 ÷ 105) = $32,381. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Ann Arbor to Lafayette
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only