Where do these numbers come from?
Every "typical value" chip in Budget Lab comes from a published source. Here they all are, so you can check them or look up figures for your own city.
Food
USDA Food Plans (Aug 2026)
Thrifty $344, Low-cost $356, Moderate $441, Liberal $549 per month. 1-person figures = the table value for a 2-person household member plus 20%.
https://www.fna.usda.gov/research/cnpp/usda-food-plans/cost-food-monthly-reportsBLS Consumer Expenditure Survey (2024 data)
Food away from home, householders under 25. Used for the dining-out chips.
https://www.bls.gov/news.release/cesan.nr0.htmELFI college meal plan study (2025–26)
National average meal plan $2,828 per semester.
https://www.elfi.com/student-loans/college-meal-plan-study/
Transportation
EIA gas prices (Sep 2026)
$4.48 per gallon, week of Sep 21, 2026.
https://www.eia.gov/petroleum/gasdiesel/FHWA fleet fuel economy (Table VM-1) (2024)
23.4 miles per gallon average.
https://www.fhwa.dot.gov/policyinformation/statistics/2024/vm1.cfmNerdWallet car insurance averages (Sep 2026)
Minimum coverage $54, full coverage $195 per month.
https://www.nerdwallet.com/insurance/auto/average-car-insurance-costCarInsurance.com rates by age (Sep 2026)
Full coverage age 22 $322, age 25 $254 per month.
https://www.carinsurance.com/average-rates-by-age.aspxExperian auto loan rates (Q2 2026)
New car APR 6.35%, used car APR 11.19%.
https://www.experian.com/blogs/ask-experian/average-car-loan-interest-rates-by-credit-score/AAA Your Driving Costs (2025)
Maintenance, repair and tires $92 per month at about 10,000 miles a year.
https://newsroom.aaa.com/wp-content/uploads/2025/09/UPDATE-AAA-Fact-Sheet-Your-Driving-Cost-9.2025-1.pdfTransit agency fare pages (Sep 2026)
Monthly pass prices for the eight cities in the dropdown.
https://www.mbta.com/fares
Health
KFF Employer Health Benefits Survey (2025)
Employee share of a single employer plan, about $120 per month.
https://www.kff.org/health-costs/2025-employer-health-benefits-survey/KFF marketplace benchmark premiums (2026)
Unsubsidized marketplace plan about $500 per month.
https://www.kff.org/affordable-care-act/state-indicator/marketplace-average-benchmark-premiums/MoneyGeek dental insurance costs (2026)
Dental $30 per month.
https://www.moneygeek.com/insurance/health/dental-insurance-costs/Aflac vision insurance costs (2026)
Vision $15 per month.
https://www.aflac.com/resources/vision-insurance/how-much-is-vision-insurance.aspx
Housing
NerdWallet renter's insurance (Sep 2026)
$14 per month.
https://www.nerdwallet.com/insurance/renters/learn/how-much-is-renters-insuranceEIA electricity data (2026)
Electricity and heating $100 per month.
https://www.eia.gov/electricity/monthly/update/end-use.phpBroadbandNow home internet cost (2026)
Internet $75 per month.
https://broadbandnow.com/guides/home-internet-cost-2026Zumper rent research (2026)
Look up average rent in your city.
https://www.zumper.com/rent-research
School and loans
Federal Direct Loan interest rates (2026–27)
Undergraduate rate 6.52% for loans first disbursed July 1, 2026 – June 30, 2027.
https://fsapartners.ed.gov/knowledge-center/library/electronic-announcements/2026-06-04/interest-rates-federal-direct-loans-first-disbursed-between-july-1-2026-and-june-30-2027College Board, Trends in College Pricing and Student Aid (2025)
Typical bachelor's borrower debt $29,560.
https://research.collegeboard.org/media/pdf/Trends-in-College-Pricing-and-Student-Aid-2025-final_1.pdfNACS Student Watch (2025–26)
Course materials $338 a year, about $28 a month.
https://www.insidehighered.com/news/quick-takes/2026/08/10/digital-boom-drives-down-cost-college-course-materials
Taxes
IRS 2026 inflation adjustments (2026)
Federal brackets and the $16,100 standard deduction for a single filer.
https://www.irs.gov/newsroom/irs-releases-tax-inflation-adjustments-for-tax-year-2026-including-amendments-from-the-one-big-beautiful-billSSA wage base (2026)
Social Security taxable maximum $184,500.
https://www.ssa.gov/oact/cola/cbb.htmlTax Foundation state income tax rates (2026)
State brackets, standard deductions and exemptions.
https://taxfoundation.org/data/all/state/state-income-tax-rates-2026/ADP salary paycheck calculator (2026)
Use it to check the take-home estimate.
https://www.adp.com/resources/tools/calculators/salary-paycheck-calculator.aspx
Wages
MIT Living Wage Calculator (2026)
Living wage and typical expenses for 1 adult, 0 children.
https://livingwage.mit.edu/My Next Move (2026)
Find median salaries by career and ZIP code.
https://www.mynextmove.org/CareerOneStop wage finder (2026)
A second place to check salaries.
https://www.careeronestop.org/Toolkit/Wages/find-salary.aspx
Transit passes in the dropdown
- Boston (MBTA LinkPass)$90/month
- New York City (OMNY 7-day cap × 4.3)$152/month
- Chicago (CTA 30-day)$75/month
- Los Angeles (Metro fare cap)$78/month
- San Francisco (Muni M pass)$86/month
- Washington DC (WMATA, lowest tier)$72/month
- Philadelphia (SEPTA TransPass)$116/month
- Seattle (ORCA PugetPass $3.00)$108/month
Figures updated September 2026. They are national averages. Your real costs depend on where you live.