Cost of Living: Definition, Index and How It's Calculated

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Updated June 16, 2026

Cost of living definition
What is a cost of living index?
How is cost of living calculated?
What to consider when calculating cost of living

KEY TAKEAWAYS:

A solid understanding of how the cost of living is defined, what impacts it and the factors to consider in your cost of living can be valuable when searching for a new job or considering a job offer.
Knowing how to calculate your cost of living can help you determine if the wages and benefits of a job, particularly a job in a new location with a higher cost of living, will cover your basic expenses.
The cost of expenses generally varies from one city or location to another, making the cost of living metric a valuable tool for comparing how affordable it can be to live in different cities.

Cost of living is an essential concept that can help you plan for your financial well-being. A solid understanding of how the cost of living is defined, what impacts it and the factors to consider in your cost of living can be valuable when searching for a new job or considering a job offer. Knowing how to calculate your cost of living can help you determine if the wages and benefits of a job, particularly a job in a new location with a higher cost of living, will cover your basic expenses.In this article, we explore the definition of cost of living, the cost of living index and cost of living adjustments, we discuss how to calculate cost of living and look at the factors to consider when doing so.Key takeaways:

Cost of living is the amount of money needed to sustain a reasonable lifestyle in a particular city.
The cost of living index is a helpful tool that can be used to compare the cost of living in different cities, offering practical information when choosing a place to live.
Factors to consider when calculating your own cost of living include housing, food, education, healthcare, transportation and taxes.

Cost of living definition

Cost of living is defined as the amount of money needed to afford the basic expenses of life in a particular city. These expenses can include the cost of housing, food, clothing, transportation, education, healthcare, taxes and more.The cost of expenses generally varies from one city or location to another, making the cost of living metric a valuable tool for comparing how affordable it can be to live in different cities. In a city with a higher cost of living, seeking a job with a higher salary may be necessary to meet your basic living expenses.Related: Minimum Wage vs. Cost of Living: How Do They Compare?

What is a cost of living index?

A cost of living index is a tool that considers and compares the relative costs of maintaining a standard of living in different cities or locations. To provide this information, it accounts for the costs of necessities like food, housing, taxes and transportation in various cities and assigns a rating.When searching for work in a new place or considering a job offer, especially one that requires relocation, a cost of living index can provide practical and valuable information that can help you find the most affordable locations to live and work and assess whether your current or new salary would cover the cost of expenses in a particular place.Related: How To Find the Best Job for You in 6 Steps

How is cost of living calculated?

To calculate your personal cost of living, consider the following:

The cost to purchase basic necessities
Your overall budget
Your current location
Your long-term plans

It's important to consider your long-term plans when calculating and making decisions about living costs. For instance, if you plan to have children, the cost of childcare may become an important expense, as may the cost of buying a home in a given city, if purchasing a home is something hat you wish to do. When making financial plans, consider how long you plant to live in a given location as well.Related: What Is an Average Cost of Living Raise? Definition and How To Calculate

What to consider when calculating cost of living

You can use a living expenses calculator to estimate what your cost of living budget is likely to be if you move to a different city or town. Here are some expenses you might factor in:

Housing

Whether you decide to rent or buy, housing can take up much of your income. Rental or mortgage prices can vary widely from city to city and neighborhood to neighborhood. According to many personal finance experts, spending under 30% of your income on housing is a financially sound decision.For example, someone with an income of $6,000 per month might try to find housing for less than $1,800 per month. That includes rent or mortgage payments, maintenance and taxes.

Food

The price of food, including basic staples, can vary widely by area. To help you manage your food budget, consider cooking the majority of your meals at hone. This can be more affordable than eating out, particularly if the city you live in or are planning to move to doesn't impose sales tax on groceries. Planning carefully to avoid food waste is another way to manage the cost of food.

Education

Whether you're spending on education for yourself or your dependants, it can be a considerable expense. When considering budget and cost of living, be sure to factor in the cost of things like tuition, workshops, field trips, textbooks, computers and software.It's also helpful to plan for educational loans you might need and include those in your long-term calculations.

Healthcare

The costs of healthcare and insurance vary by location. Consider whether you qualify for healthcare from your employer or if you'll need to buy a health plan yourself. It can be helpful to allocate a certain amount of money per month to cover healthcare costs for you and your family. If you have pets, it may also be prudent to budget for their veterinary care.Related: What Is a Health Reimbursement Arrangement and How Does It Work?

Transportation

If you have a car, factor in all the costs that come with it. These may include the cost of fuel, parking, tolls, regular maintenance and repairs. While commuting by public transport or carpooling can help cut costs, these options may not be available in all cities and towns. If you drive far to get to work or drive to various locations as part of your job, try to factor that into your expenses. Sometimes, your employer may compensate you for these expenses.

Taxes

Some states don't have sales and income taxes; these taxes can be high in others. The federal income tax rate ranges from 10% to 37%, depending on your income bracket. Consider all of this in your cost of living comparisons. Taxes associated with where you live and work can seriously impact your budget. It might help to consult a personal finance expert to determine how much you can save on taxes to improve your cost of living.Related: Costs vs. Expenses: What Are the Differences?

Cost-of-living adjustments (COLAs)

As the cost of living rises, wages and benefits need to keep the same pace. To ensure wages align with rising inflation and that Social Security and Supplemental Security Income (SSI) benefits remain useful, the United States Congress instituted legislation that provided for cost of living adjustments (COLAs) in 1973. These adjustments are in place to help people afford basic expenses and maintain a reasonable standard of living.

Tips for managing a higher cost of living

If you plan to move to a city with a higher cost of living, it’s important to consider whether your current financial situation or salary proposed in a job offer will allow you to maintain your current standard of living. In some situations, you might find that a higher salary will be necessary.You might also experience a cost of living increase without moving. This can happen due to inflation and other economic factors like a rise in the cost of goods and services. When your cost of living increases, the following tips and strategies may help you manage your situation:

If possible, schedule a conversation with your manager to discuss the possibility of a raise. You might prepare for this meeting by collecting cost of living data to share along with your employment history.
Explore ways to reduce excess spending such as switching to public transportation, cooking at home more frequently or cutting costs in other areas.
Identify a new city or area within your current city that has a lower cost of living.

This article is for informational purposes only and does not constitute financial advice. Consult with a licensed financial professional for any issues you may be experiencing.

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