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US relocation · 2026

Pennsylvania flagPhiladelphia → Washington flagSeattle

At $100,000 gross, you’d need about $133,962 in Seattle to match Philadelphia purchasing power — and same-gross take-home shifts by +$2,455/year.

By Sammy S. · Founder · AuthorUpdated for 2026

Stronger purchasing power

Philadelphia leads

City COL moves +36 from Philadelphia (106) to Seattle (142). Parent median income delta (Pennsylvania → Washington): +$18,000. At $100,000 gross: equivalent salary ~$133,962; same-gross take-home +$2,455/year.

Side-by-side city scoreboard

Philadelphia

94

Purchasing power index · 100 = national avg

COL index
106
Parent median income
72,800 USD
Sales tax
~6.34%
Property tax
~1.26%
Income tax
Taxed
$100k take-home
$76,110
Open calculator →

Seattle

70

Purchasing power index · 100 = national avg

COL index
142
Parent median income
90,800 USD
Sales tax
~9.57%
Property tax
~0.75%
Income tax
None
$100k take-home
$78,565
Open calculator →
●Example scenario: $100,000 gross (Single filer, 2026)
Illustrative numbers only—same formulas as the calculator. Take-home rows assume you earn the scenario gross while living in each city (local taxes apply). Below the tables, use “Open calculator — personalize results” to enter your salary, filing status, rent or buy, and more—the full tool uses this same city pair.

Salary & estimated take-home (USD)

Annual gross (scenario)

Philadelphia

$100,000

Seattle

$100,000

Est. annual take-home

Philadelphia

$76,110

Seattle

$78,565

Approx. combined tax + payroll burden

Philadelphia

23.9%

Seattle

21.4%

Take-home difference at same gross

+$2,455 / yr in Seattle vs Philadelphia

Equivalent gross for same lifestyle (COL-adjusted)

Seattle only

$133,962

Change vs scenario gross

Seattle only

+34%

Est. take-home at equivalent gross

Seattle only

$102,005

Burden at equivalent gross

Seattle only

23.9%

Snapshot: how to read this move ($100,000 scenario)

  • Monthly take-home at the same gross. At $100,000/year, estimated take-home is about $6,343/mo in Philadelphia vs $6,547/mo in Seattle—roughly +$204/mo more in Seattle before housing ($2,455/yr annualized).

  • Cost of living vs taxes. Our benchmark COL index is 106 for Philadelphia and 142 for Seattle (100 = national average). The destination is about +34% more expensive than the origin for that basket—then state/province and payroll taxes shift take-home further.

  • Equivalent salary to keep the same lifestyle. To match purchasing power after COL, the model suggests about $133,962/yr gross in Seattle (~$11,164/mo), with estimated take-home around $8,500/mo. Versus estimated take-home in Philadelphia at the scenario gross, that is about +34% (by design, equivalent gross targets similar real spending power after COL and taxes; exact match varies with rounding).

  • Cash after typical 1BR rent (illustrative). Using average 1-bedroom rent in the housing table, roughly $4,793/mo is left after rent in Philadelphia at the scenario gross vs $4,497/mo in Seattle at the same gross. At the equivalent gross in Seattle, about $6,450/mo after rent. Typical rent differs by about +$500/mo between the two cities in our data.

Figures use the same tax and COL engine as the calculator; your household, deductions, and neighborhood can change outcomes. Use the calculator below for your exact salary and housing choice.

Housing snapshot · average rent · 1-bedroom apartment

Typical monthly rent

Philadelphia

$1,550

Seattle

$2,050

Rent as % of scenario gross ($100,000/yr)

Philadelphia

18.6%

Seattle

24.6%

Rent as % of equivalent gross (Seattle)

Seattle only

18.4%

Rent benchmarks are city-level estimates; neighborhoods vary. Mortgage (buy) and other home sizes are available in the full calculator.

Housing: Philadelphia → Seattle

Approximate median monthly rents for the primary metros in Philadelphia and Seattle. Negative delta means housing is cheaper in Seattle. Figures are planning estimates — neighborhoods vary.

1BR rent delta / yr

+$6,000

1BR % of $100k (Philadelphia)

18.6%

$1,550/mo

1BR % of $100k (Seattle)

24.6%

$2,050/mo

Property tax (effective)

~1.26% → ~0.75%

Philadelphia → Seattle

At COL-equivalent salary in Seattle, 1BR rent is about 18.4% of gross — vs 24.6% if you keep $100,000 gross.

Apartment rent (monthly)

SizePhiladelphiaSeattleDelta / mo
Studio$1,300$1,650+$350
1 bedroom$1,550$2,050+$500
2 bedroom$1,850$2,600+$750
3 bedroom$2,300$3,400+$1,100

House rent (monthly)

SizePhiladelphiaSeattleDelta / mo
2 bedroom$2,000$2,800+$800
3 bedroom$2,500$3,600+$1,100
4 bedroom$3,100$4,500+$1,400

Buy instead? Est. mortgage (3BR house)

Philadelphia payment

$2,874/mo

Seattle payment

$4,139/mo

Payment delta

+$1,265

Est. purchase price

$540,000 → $777,600

Illustrative P&I only: 20% down, 7% APR, 30-year fixed. Price ≈ annual rent × 18 (price-to-rent). Taxes, insurance, and HOA not included — open the calculator Housing section to adjust.

Sources: approximate metro medians (Zillow / Zumper-style US benchmarks; CMHC-style for Canada). Property tax rates are statewide effective averages. Personalize unit size, rent vs buy, and down payment in the relocation calculator.

Model housing for Philadelphia → Seattle

Key takeaways — Philadelphia → Seattle

  • Seattle has a city cost-of-living index of 142 vs 106 in Philadelphia (national average = 100) — about 34% more expensive on our index.
  • At $100,000 gross (Single filer), roughly $133,962 in Seattle matches Philadelphia purchasing power (+34% COL-adjusted).
  • Keeping the same $100,000 gross, estimated take-home shifts by about +$2,455/year (Philadelphia → Seattle) after federal, state, and FICA taxes.
  • Parent-state paycheck model at $100k (single): Pennsylvania ~$76,110 vs Washington ~$78,565 (+$2,455/year) — city COL can still change the equivalent salary you need.
  • Seattle sits in a no–state-income-tax state while Philadelphia does not — same-gross take-home often improves even before rent.
  • Illustrative 1-bedroom rent: ~$1,550/mo in Philadelphia vs ~$2,050/mo in Seattle (+$6,000/year).
  • Quality-of-life snapshot (indicative): overall 50 in Philadelphia vs 55 in Seattle — higher safety in the new city.

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Estimates for planning only. Cost-of-living indices and tax rules change; verify with local sources or a professional before relocating.