Tax Calculator

Paycheck Tax Calculator

Back to calculator
US relocation · 2026

Washington flagSeattle → California flagSan Diego

At $100,000 gross, you’d need about $102,817 in San Diego to match Seattle purchasing power — and same-gross take-home shifts by −$5,771/year.

By Sammy S. · Founder · AuthorUpdated for 2026

Stronger purchasing power

Seattle leads

City COL moves +4 from Seattle (142) to San Diego (146). Parent median income delta (Washington → California): +$2,700. At $100,000 gross: equivalent salary ~$102,817; same-gross take-home −$5,771/year.

Side-by-side city scoreboard

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 →

San Diego

68

Purchasing power index · 100 = national avg

COL index
146
Parent median income
93,500 USD
Sales tax
~9.03%
Property tax
~0.7%
Income tax
Taxed
$100k take-home
$72,794
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)

Seattle

$100,000

San Diego

$100,000

Est. annual take-home

Seattle

$78,565

San Diego

$72,794

Approx. combined tax + payroll burden

Seattle

21.4%

San Diego

27.2%

Take-home difference at same gross

$-5,771 / yr in San Diego vs Seattle

Equivalent gross for same lifestyle (COL-adjusted)

San Diego only

$102,817

Change vs scenario gross

San Diego only

+2.8%

Est. take-home at equivalent gross

San Diego only

$74,477

Burden at equivalent gross

San Diego only

27.6%

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 $6,547/mo in Seattle vs $6,066/mo in San Diego—roughly $481/mo less in San Diego before housing ($5,771/yr annualized).

  • Cost of living vs taxes. Our benchmark COL index is 142 for Seattle and 146 for San Diego (100 = national average). The destination is about +2.8% 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 $102,817/yr gross in San Diego (~$8,568/mo), with estimated take-home around $6,206/mo. Versus estimated take-home in Seattle at the scenario gross, that is about -5.2% (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 $4,497/mo is left after rent in Seattle at the scenario gross vs $3,566/mo in San Diego at the same gross. At the equivalent gross in San Diego, about $3,706/mo after rent. Typical rent differs by about +$450/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

Seattle

$2,050

San Diego

$2,500

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

Seattle

24.6%

San Diego

30.0%

Rent as % of equivalent gross (San Diego)

San Diego only

29.2%

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

Housing: Seattle → San Diego

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

1BR rent delta / yr

+$5,400

1BR % of $100k (Seattle)

24.6%

$2,050/mo

1BR % of $100k (San Diego)

30%

$2,500/mo

Property tax (effective)

~0.75% → ~0.7%

Seattle → San Diego

At COL-equivalent salary in San Diego, 1BR rent is about 29.2% of gross — vs 30% if you keep $100,000 gross.

Apartment rent (monthly)

SizeSeattleSan DiegoDelta / mo
Studio$1,650$1,950+$300
1 bedroom$2,050$2,500+$450
2 bedroom$2,600$3,200+$600
3 bedroom$3,400$4,200+$800

House rent (monthly)

SizeSeattleSan DiegoDelta / mo
2 bedroom$2,800$3,200+$400
3 bedroom$3,600$4,100+$500
4 bedroom$4,500$5,200+$700

Buy instead? Est. mortgage (3BR house)

Seattle payment

$4,139/mo

San Diego payment

$4,714/mo

Payment delta

+$575

Est. purchase price

$777,600 → $885,600

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 Seattle → San Diego

Key takeaways — Seattle → San Diego

  • San Diego has a city cost-of-living index of 146 vs 142 in Seattle (national average = 100) — about 3% more expensive on our index.
  • At $100,000 gross (Single filer), roughly $102,817 in San Diego matches Seattle purchasing power (+2.8% COL-adjusted).
  • Keeping the same $100,000 gross, estimated take-home shifts by about −$5,771/year (Seattle → San Diego) after federal, state, and FICA taxes.
  • Parent-state paycheck model at $100k (single): Washington ~$78,565 vs California ~$72,794 (−$5,771/year) — city COL can still change the equivalent salary you need.
  • Seattle sits in a no–state-income-tax state; San Diego does not — expect a larger tax bite at the same gross unless COL savings offset it.
  • Illustrative 1-bedroom rent: ~$2,050/mo in Seattle vs ~$2,500/mo in San Diego (+$5,400/year).
  • Quality-of-life snapshot (indicative): overall 55 in Seattle vs 75 in San Diego — higher safety & better weather in the new city.

Related tools

Dig into taxes, flip the move, or compare other cities.

More city & state comparisons

Compare other moves or see which states are best for take-home pay.

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