What is the most expensive city in the US?

New York City and San Francisco consistently rank as the most expensive US cities, with COL indices typically ranging from 160–200+, driven by extreme housing costs. Honolulu, Boston, and Seattle also rank high.

Does a higher salary always mean more take-home pay in an expensive city?

Not necessarily. High-tax states like California and New York take more of your gross salary. A $150K salary in NYC may yield less after-tax purchasing power than $100K in Austin, Texas.

How accurate are COL calculators?

They give useful directional estimates but not exact answers. Personal lifestyle factors (housing type, family size, car vs. transit) can swing actual costs ±20-30% from the index estimate.

Where can I find COL index data?

Major sources include NerdWallet's Cost of Living Calculator, Numbeo, the MIT Living Wage Calculator, Sperling's Best Places, and the Bureau of Economic Analysis's regional price parities.

Cost of Living Calculator — Compare Two Cities | KalkWise

By the KalkWise Editorial Team Reviewed for accuracy Updated June 2026

What is the cost of living calculator — compare two cities?

In short

Cost of living difference = (target city index ÷ current city index − 1) × 100. If your current city has a COL index of 100 and you move to a city with index 130, you need 30% more income to maintain the same lifestyle. New York City is ~95% more expensive than the national average.

Calculates the equivalent salary needed in a target city to match your current purchasing power, based on cost of living indices.

How to use this calculator

1Enter your current annual salary.
2Enter the cost of living index for your current city (US average = 100).
3Enter the cost of living index for your target city.
4The calculator shows the equivalent salary and dollar difference.

The formula

equivalent salary=current salary×target indexcurrent index

difference %=target−currentcurrent index×100

Equivalent Salary = S × (C₂ ÷ C₁); Difference % = (C₂ − C₁) ÷ C₁ × 100

S: — Current salary
C₁: — Current city COL index
C₂: — Target city COL index

Worked example

The scenario

$70,000 salary in Austin (COL index 95), moving to San Francisco (COL index 175).

gives

The result

Equivalent salary needed = $128,947. The move requires $58,947 more income to maintain your lifestyle.

Common use cases

Evaluate remote work relocation decisions.
Negotiate salary for a job in a new city.
Compare financial impact of moving for career advancement.
Plan international relocations.

Limitations & assumptions

COL indices are averages — individual spending patterns vary.
Housing is often the biggest driver of COL differences; personal housing choice matters enormously.
Tax differences between states are not captured in COL indices alone.
Indices change over time — check current data from sources like NerdWallet, Numbeo, or the Council for Community and Economic Research (C2ER).

Frequently asked questions

A cost of living index compares the relative cost of goods and services across cities to a baseline (usually the US average = 100). A city with an index of 150 is 50% more expensive than average; an index of 80 is 20% cheaper.

Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.

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