$100K in Charleston = $58,041 in Porto
Your $100K salary in Charleston (COL 97) has the same purchasing power as $58,041 in Porto (COL 56). Porto is cheaper — your money goes 42% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Charleston $100K | Porto $100K (same salary) |
|---|---|---|
| Monthly take-home | $5,804 | $4,654 |
| 1BR rent | $1,900 | $1,100 |
| Groceries | $376 | $380 |
| Transport | $55 | $150 |
| Utilities | $162 | $85 |
| Internet | $63 | $30 |
| Left after essentials | $3,248/month | $2,909/month |
Frequently asked questions
What is $100K in Charleston equivalent to in Porto?
$100K in Charleston (COL index 97) has the same purchasing power as $58,041 in Porto (COL index 56). That's 42% less than your current salary.
If I move from Charleston to Porto keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to Porto, you'd have $-339 more per month after core expenses — because Porto is cheaper than Charleston.
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 × (56 ÷ 97) = $58,041. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Charleston to Porto
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only