Software Developer · Salary Comparison · 2026
Software Developer Salary: Louisville, KY vs Seattle, WA
Side-by-side comparison of salary, taxes, cost of living, and take-home pay for Software Developers in Louisville, KY and Seattle, WA, based on BLS OEWS 2026 data.
1Which City Pays More After Tax?
Higher Gross Salary
✓ Seattle, WA
$100,000 vs $170,000
Better Purchasing Power
✓ Louisville, KY
$114,943 vs $104,938
Best Take-Home (COL-Adj)
✓ Louisville, KY
$101,959 vs $96,963
2
Detailed Comparison
| Metric | Louisville, KY | Seattle, WA | Diff |
|---|---|---|---|
| Median Annual Salary | $100,000 | $170,000▲ | -$70,000 |
| 25th Percentile | $76,000 | $130,000▲ | -$54,000 |
| 75th Percentile | $128,000 | $218,000▲ | -$90,000 |
| 90th Percentile | $160,000 | $270,000▲ | -$110,000 |
| Cost of Living Index | 87 | 162 | -75 |
| State Income Tax | 4% | 0%▲ | +4% |
| COL-Adjusted Median | $114,943▲ | $104,938 | +$10,005 |
| Est. Annual Take-Home | $88,704 | $157,080▲ | -$68,376 |
| COL-Adj. Take-Home | $101,959▲ | $96,963 | +$4,996 |
| Total Employment | 10,000 | 58,000 | -48,000 |
▲ = Higher value wins for this metric. Diff = Louisville, KY minus Seattle, WA.
3Summary Analysis
On paper, Seattle, WA pays $70,000 more (median: $100,000 vs $170,000). However, after adjusting for cost of living (index 87 vs 162), Louisville, KY provides better purchasing power ($114,943 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.