Cost of Living Calculator
What the cost of living calculator does
The cost of living calculator adds up your main monthly expenses, housing, food, transport, utilities and everything else, and returns a single monthly total. It is a quick way to establish what a month of your life costs, which is the number you need before comparing cities, negotiating a salary, or building an emergency fund.
What to put in each field
| Field | Include |
|---|---|
| Housing | Rent or mortgage payment, property tax, home or renters insurance, HOA or service charges |
| Food | Groceries, restaurants, takeaway, coffee, work lunches |
| Transport | Fuel, parking, tolls, public transport passes, car payment, car insurance, maintenance averaged per month |
| Utilities | Electricity, gas, water, internet, mobile phone, refuse collection |
| Other expenses | Health insurance and medical, childcare, debt payments, subscriptions, clothing, personal care, entertainment, savings contributions if you treat them as a fixed cost |
Use average figures for irregular items. An annual car insurance premium of $1,200 is $100 a month; a $600 quarterly water bill is $200 a month.
Worked example
A single renter in a mid-sized city: housing $1,450, food $520, transport $310, utilities $210, other $640. Total monthly cost of living = $3,130, or $37,560 a year. To cover that from a salary after roughly 25% in taxes and deductions, gross pay needs to be about $50,000. Comparing the total against take-home pay with the take-home pay calculator shows the monthly surplus or shortfall.
Typical spending shares
U.S. household surveys show that housing usually absorbs 30 to 35% of spending, transport 15 to 17%, food 12 to 13%, and utilities 6 to 8%. If your housing share is above 40%, you are what statisticians call cost-burdened, and a move, a roommate or a higher income is usually needed to build savings. The budget calculator breaks the same total into planned categories and compares them with income.
Comparing two cities
Run the calculator once with your current expenses and once with estimates for the new location. Housing and transport drive most of the difference: rent for a one-bedroom flat can be three times higher in San Francisco or London than in a regional city, while food and utilities vary far less. A salary offer should be judged against the new total, not the old one. A 20% raise that comes with a 60% rent increase can leave you worse off. The salary comparison calculator helps line the two offers up.
Using the total for planning
- Emergency fund. Three to six months of the total is the standard target. For the example above that is $9,400 to $18,800.
- Retirement income. The monthly total, less items that stop at retirement such as commuting and mortgage payments, is the income your savings must replace. Feed it into the retirement calculator.
- Inflation. Costs rise over time. The inflation calculator shows what today’s total is likely to become in ten or twenty years.
- Debt capacity. Housing and debt payments together relative to income determine what lenders will offer.
Common mistakes
- Leaving out annual costs. Insurance renewals, car servicing, holidays and gifts are real expenses. Spread them across twelve months.
- Using the rent alone for housing. Add insurance, service charges and, for owners, maintenance of about 1% of the property value a year.
- Estimating food from memory. Bank statements for the last three months give a far more honest figure.
- Ignoring taxes when comparing cities. State and local income taxes and sales taxes differ; check the income tax calculator for the new location.
External references
Frequently asked questions
Should I include savings and investments?
Include them under other expenses if you want the total to represent the income you need to live your current life. Leave them out if you want pure consumption spending.
How do I handle a variable income?
The calculator only needs expenses. Compare the total with your average monthly income over the past year to see the margin.
What is a reasonable housing percentage?
The common guideline is no more than 30% of gross income, or 35% of the expense total. Many people in expensive cities exceed it, but doing so leaves little room for savings.
Does the tool compare cities automatically?
No. It totals the figures you enter. Run it twice with each city’s estimates and compare the results.
How often should I update the numbers?
Every six months, or whenever rent, a car payment or a major bill changes. Costs drift upward and the total is easy to underestimate.