Overall
- Boston-Cambridge-Newton
- 108.3
- Seattle-Tacoma-Bellevue
- 111.1
Diff +2.9 RPP
Boston-Cambridge-Newton vs Seattle-Tacoma-Bellevue
Cost of living comparison based on BEA Regional Price Parities. Seattle-Tacoma-Bellevue is 2.6% more expensive than Boston-Cambridge-Newton.
2.6% more expensive
Seattle-Tacoma-Bellevue, WA is 2.6% more expensive than Boston-Cambridge-Newton, MA-NH on BEA Regional Price Parities (overall RPP 111.1 vs 108.3). A $100,000 salary in Boston-Cambridge-Newton buys about the same as $102,648 in Seattle-Tacoma-Bellevue; the largest component gap is services.
- Overall RPP 108.3 (Boston-Cambridge-Newton) vs 111.1 (Seattle-Tacoma-Bellevue)
- $100k in Boston-Cambridge-Newton ≈ $102,648 purchasing power in Seattle-Tacoma-Bellevue
- Services drives the gap (-56.0 RPP points)
RPP parity plate
Pair MA:WA 108.3→111.1
TIER-NEAR · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-SHIFT
- TIER-NEAR Near tier
- CROSS-STATE MA × WA
- SPLIT-BUDGET Split budget
- BOTH-ABOVE Both above 100
- PP-SHIFT PP shift
Instrument codes from this pair's BEA Regional Price Parities (overall · goods · services · rents · national benchmark 100 · purchasing-power conversion), not a ranking or recommendation.
Category Breakdown
Goods
- Seattle-Tacoma-Bellevue
- 104.0
Diff +4.3 RPP
Services
- Boston-Cambridge-Newton
- 148.8
Diff -56.0 RPP
Rents
- Boston-Cambridge-Newton
- 148.4
- Seattle-Tacoma-Bellevue
- 151.3
Diff +2.9 RPP
| Category | Boston-Cambridge-Newton | Seattle-Tacoma-Bellevue | Difference |
|---|---|---|---|
| Overall | 108.3 | 111.1 | +2.9 |
| Goods | 99.7 | 104.0 | +4.3 |
| Services | 148.8 | 92.8 | -56.0 |
| Rents | 148.4 | 151.3 | +2.9 |
Visual Comparison
Overall
Boston-Cambridge-Newton 108.3
Seattle-Tacoma-Bellevue 111.1
Goods
Boston-Cambridge-Newton 99.7
Seattle-Tacoma-Bellevue 104.0
Services
Boston-Cambridge-Newton 148.8
Seattle-Tacoma-Bellevue 92.8
Rents
Boston-Cambridge-Newton 148.4
Seattle-Tacoma-Bellevue 151.3
Vertical line = national average (100)
What This Comparison Actually Tells You
Services creates the largest separation: Seattle-Tacoma-Bellevue is 56.0 points lower. But services move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Seattle-Tacoma-Bellevue, WA is 2.6% more expensive than Boston-Cambridge-Newton, MA-NH, a meaningful but not extreme shift. The move decision turns on which budget category creates the 2.9-point overall gap.
Both metros exceed the U.S. benchmark of 100. The choice is between two national premiums, so local wages need to clear the higher baseline in either market.
Comparable population context is incomplete for this pair, so no market-scale explanation is inferred from the price indexes.
For a service-heavy household, test childcare, health, and other locally supplied costs before relying on rent alone. The BEA ratio converts $100,000 in Boston-Cambridge-Newton to $102,648 in Seattle-Tacoma-Bellevue, but it is not a personal spending weight.
Boston-Cambridge-Newton
108.3
Cost Index
Seattle-Tacoma-Bellevue
111.1
Cost Index
Salary Equivalents
What a salary in Boston-Cambridge-Newton would need to be in Seattle-Tacoma-Bellevue for the same purchasing power:
| In Boston-Cambridge-Newton | In Seattle-Tacoma-Bellevue | Difference |
|---|---|---|
| $50,000 | $51,324 | +$1,324 |
| $75,000 | $76,986 | +$1,986 |
| $100,000 | $102,648 | +$2,648 |
| $150,000 | $153,972 | +$3,972 |
$ in Boston-Cambridge-Newton = in Seattle-Tacoma-Bellevue
Same BEA Regional Price Parity ratio as the table above (108.3 → 111.1), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Seattle-Tacoma-Bellevue more expensive than Boston-Cambridge-Newton?
Seattle-Tacoma-Bellevue is 2.6% more expensive than Boston-Cambridge-Newton. The overall cost index is 111.1 vs 108.3 (national average = 100).
What salary in Seattle-Tacoma-Bellevue equals $100K in Boston-Cambridge-Newton?
A $100,000 salary in Boston-Cambridge-Newton has the same purchasing power as $102,648 in Seattle-Tacoma-Bellevue. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Boston-Cambridge-Newton and Seattle-Tacoma-Bellevue?
Rents in Boston-Cambridge-Newton are indexed at 148.4 while Seattle-Tacoma-Bellevue is at 151.3 (national average = 100). Seattle-Tacoma-Bellevue has higher rents.
Data sources
- BEA Regional Price Parities (RPP), the cost-of-living indices shown on this page
- U.S. Census Bureau, American Community Survey (ACS), gross-rent observations behind the rents component
- BLS Consumer Price Index (CPI), goods and services price relatives
- BLS Occupational Employment and Wage Statistics (OEWS), labor-driven services component
- HUD Fair Market Rents (FMR), 40th-percentile rent cross-reference
Every figure on PlainCost is rendered directly from BEA Regional Price Parity source data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, our changelog, or report a data error. Data current as of 2026-08-11. Rankings measure the published cost-of-living index only; we don't recommend where to live or rate any metro's quality of life.