Software Developer · Salary Comparison · 2026
Software Developer Salary: Boston, MA vs Seattle, WA
Side-by-side comparison of salary, taxes, cost of living, and take-home pay for Software Developers in Boston, MA and Seattle, WA, based on BLS OEWS 2026 data.
1Which City Pays More After Tax?
Higher Gross Salary
✓ Seattle, WA
$155,000 vs $170,000
Better Purchasing Power
✓ Seattle, WA
$95,679 vs $104,938
Best Take-Home (COL-Adj)
✓ Seattle, WA
$83,987 vs $96,963
2
Detailed Comparison
| Metric | Boston, MA | Seattle, WA | Diff |
|---|---|---|---|
| Median Annual Salary | $155,000 | $170,000▲ | -$15,000 |
| 25th Percentile | $118,000 | $130,000▲ | -$12,000 |
| 75th Percentile | $200,000 | $218,000▲ | -$18,000 |
| 90th Percentile | $248,000 | $270,000▲ | -$22,000 |
| Cost of Living Index | 162 | 162 | — |
| State Income Tax | 5% | 0%▲ | +5% |
| COL-Adjusted Median | $95,679 | $104,938▲ | -$9,259 |
| Est. Annual Take-Home | $136,059 | $157,080▲ | -$21,021 |
| COL-Adj. Take-Home | $83,987 | $96,963▲ | -$12,976 |
| Total Employment | 42,000 | 58,000 | -16,000 |
▲ = Higher value wins for this metric. Diff = Boston, MA minus Seattle, WA.
3Summary Analysis
On paper, Seattle, WA pays $15,000 more (median: $155,000 vs $170,000). However, after adjusting for cost of living (index 162 vs 162), Seattle, WA provides better purchasing power ($95,679 vs $104,938 equivalent). Seattle, WA has no state income tax, which is a significant advantage.
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Data: U.S. Bureau of Labor Statistics OEWS · 2026 · Cost-of-living indices from composite metro area data. Take-home estimates approximate only — consult a tax professional for accurate figures.