$100K in Idaho Falls = $89,655 in McAllen
Your $100K salary in Idaho Falls (COL 87) has the same purchasing power as $89,655 in McAllen (COL 78). McAllen is cheaper — your money goes 10% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Idaho Falls $100K | McAllen $100K (same salary) |
|---|---|---|
| Monthly take-home | $5,838 | $6,321 |
| 1BR rent | $1,100 | $950 |
| Groceries | $365 | $338 |
| Transport | $35 | $35 |
| Utilities | $142 | $165 |
| Internet | $65 | $60 |
| Left after essentials | $4,131/month | $4,773/month |
Frequently asked questions
What is $100K in Idaho Falls equivalent to in McAllen?
$100K in Idaho Falls (COL index 87) has the same purchasing power as $89,655 in McAllen (COL index 78). That's 10% less than your current salary.
If I move from Idaho Falls to McAllen keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to McAllen, you'd have $642 more per month after core expenses — because McAllen is cheaper than Idaho Falls.
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 × (78 ÷ 87) = $89,655. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Idaho Falls to McAllen
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only