$120K in Charleston = $107,629 in Columbia
Your $120K salary in Charleston (COL 97) has the same purchasing power as $107,629 in Columbia (COL 87). Columbia is cheaper — your money goes 10% further there.
Budget breakdown — $120K in both cities
What $120K actually buys you in each city after taxes and core expenses.
| Expense | Charleston $120K | Columbia $120K (same salary) |
|---|---|---|
| Monthly take-home | $6,535 | $6,535 |
| 1BR rent | $1,900 | $1,250 |
| Groceries | $376 | $361 |
| Transport | $55 | $45 |
| Utilities | $162 | $152 |
| Internet | $63 | $60 |
| Left after essentials | $3,979/month | $4,667/month |
Frequently asked questions
What is $120K in Charleston equivalent to in Columbia?
$120K in Charleston (COL index 97) has the same purchasing power as $107,629 in Columbia (COL index 87). That's 10% less than your current salary.
If I move from Charleston to Columbia keeping my $120K salary, will I be better off?
Yes. If you keep earning $120K after moving to Columbia, you'd have $688 more per month after core expenses — because Columbia 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: $120K × (87 ÷ 97) = $107,629. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Charleston to Columbia
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only