$120K in Philadelphia = $181,682 in Boston
Your $120K salary in Philadelphia (COL 107) has the same purchasing power as $181,682 in Boston (COL 162). Boston is more expensive — you'd need 51% more to maintain the same lifestyle.
Budget breakdown — $120K in both cities
What $120K actually buys you in each city after taxes and core expenses.
| Expense | Philadelphia $120K | Boston $120K (same salary) |
|---|---|---|
| Monthly take-home | $6,845 | $6,655 |
| 1BR rent | $2,000 | $3,000 |
| Groceries | $391 | $418 |
| Transport | $96 | $90 |
| Utilities | $160 | $185 |
| Internet | $65 | $70 |
| Left after essentials | $4,133/month | $2,892/month |
Frequently asked questions
What is $120K in Philadelphia equivalent to in Boston?
$120K in Philadelphia (COL index 107) has the same purchasing power as $181,682 in Boston (COL index 162). That's 51% more than your current salary.
If I move from Philadelphia to Boston keeping my $120K salary, will I be better off?
Not necessarily. Core expenses in Boston are higher, so on the same $120K salary you'd have $1,241 less per month. You'd need to earn $181,682 to maintain the same standard of living.
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 × (162 ÷ 107) = $181,682. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Philadelphia to Boston
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only