Salary Comparison

Full Stack Developer Salary:
Seattle, WA vs Philadelphia, PA

Side-by-side gross salary, after-tax take-home pay, and purchasing power comparison. Updated June 2026.

Seattle, WA
$185,625
/ year
+31%
difference
Philadelphia, PA
$141,499
/ year
Bottom line: Philadelphia offers better purchasing power despite Seattle paying more gross. How is this calculated? →
Metric
Seattle
Philadelphia
Median Gross Salary
Annual, before tax
$185,625✓ higher
$141,499
Entry Level
0–2 years experience
$120,043✓ higher
$91,507
Senior Level
8+ years experience
$287,036✓ higher
$218,803
Est. Take-Home Pay
After income tax + FICA
$124,047✓ higher
$96,114
Purchasing Power
Equivalent in median-CoL city
$130,722
$131,018✓ higher
Cost of Living Index
Relative to US median (1.00)
1.42×
1.08×✓ lower
Percentile 10 (Low)
Bottom 10% of earners
$120,043✓ higher
$91,507
Percentile 90 (High)
Top 10% of earners
$287,036✓ higher
$218,803

What if you move from Seattle to Philadelphia?

Gross salary change
$44,126
31% decrease
Take-home change
$27,933
per year after tax
Purchasing power change
+$296
equivalent real income

Take-home pay is estimated using 2024 US federal tax brackets (single filer) + 7.65% FICA, or a blended international effective rate. Purchasing power converts gross salary to an equivalent in a US median cost-of-living city (index 1.00×). Full methodology →

Salary Range Comparison

Seattle, WA$185,625
P10: $120,043Median: $185,625P90: $287,036
Philadelphia, PA$141,499
P10: $91,507Median: $141,499P90: $218,803

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Frequently Asked Questions

▶Does a Full Stack Developer earn more in Seattle or Philadelphia?

The median Full Stack Developer salary in Seattle, WA is $185,625/yr compared to $141,499/yr in Philadelphia, PA. Seattle pays 31% more in gross terms.

▶Is a Full Stack Developer salary worth more in Seattle or Philadelphia after cost of living?

After adjusting for local cost of living, your Seattle salary has the purchasing power of $130,722/yr in a median-cost city, vs $131,018/yr for Philadelphia. Philadelphia offers stronger real purchasing power.

▶What is the take-home pay for a Full Stack Developer in Seattle vs Philadelphia?

After estimated taxes, a Full Stack Developer in Seattle, WA takes home approximately $124,047/yr, vs $96,114/yr in Philadelphia, PA. These are estimates based on standard federal tax rates and do not account for state/local taxes or deductions.