A little clarity for everyday life

Your bills,
explained.

Understand what you’re paying for, why costs change, and what you can do about it.

Explore the topics Start with a guide

Plainspoken explanationsVisual guidesSources you can follow

LOOK BEYOND THE TOTAL

YOUR GASOLINE BILL

01 / THE PRICEWhat a gallon costs

Oil, refining, delivery, station costs and taxes.

02 / THE AMOUNTHow many gallons you use

Your miles, your vehicle and how you drive.

PUT THEM TOGETHERPrice × gallons = your bill

Follow the gasoline bill

Start with the familiar

Every bill has a backstory.

Follow the money. Explore the connections. Try an example with numbers you can change.

Transportation / Gasoline

What sets the price at the pump?

From the world oil market to the miles you drive. See what shapes the price—and what shapes your bill.

9 min read · Fuel calculatorExplore the guide

Healthcare / The big picture

What goes into your healthcare bill?

The care, the prices and the coverage. Understand how they fit together and how the cost gets divided.

11 min read · Cost exampleExplore the guide

Both guides: sources reviewed November 4, 2026.

The household, one expense at a time

Start with a bill you recognize.

Open a topic to find a published guide or see the questions we plan to cover next.

01Housing & HomeRent, mortgages & the cost of home

Planned coverage

Rent and housing supply
Mortgages and interest rates
Property taxes and insurance
Repairs, maintenance and HOA dues

02HealthcareCoverage, care & what you pay

Read now

What affects your healthcare bill?

Planned coverage

Health insurance and premiums
Medical bills and prescriptions
Dental and vision care

03Food & DiningFrom the grocery aisle to your table

Planned coverage

Groceries and food prices
Restaurants and takeout
Delivery fees, service charges and tips

04TransportationThe cost of getting where you need to go

Read now

What affects your gasoline bill?

Planned coverage

Buying and financing a car
Auto insurance and repairs
Electric vehicles and charging

05Utilities & ConnectionsThe services that keep home running

Planned coverage

Electricity and home heating
Water, sewer and septic systems
Internet and mobile phones
Garbage and recycling

06Family & EducationCare, learning & the people you support

Planned coverage

Childcare and preschool
School costs and college tuition
Student loans
Eldercare and long-term care

07Money & TaxesInterest, fees & what leaves your paycheck

Planned coverage

Credit cards and borrowing
Banking and financial fees
Income and payroll taxes

08Everyday LifeThe other costs that add up

Planned coverage

Pets and veterinary care
Subscriptions and memberships
Household goods and personal care
Travel and vacations

We’re building this collection one researched guide at a time. Gasoline and healthcare are available now; planned topics are listed so you can see where we’re headed.

How we explain your bills

Clarity starts with
better questions.

A household bill connects everyday choices to larger systems. We look at both, including what a change might cost someone else.

01 / FOLLOW THE MONEY

What am I paying for?

Break down the total. See the products, services and steps that contribute to what you pay.

02 / CONNECT THE CAUSES

Why does it change?

Understand how usage, supply, competition, infrastructure and public policy affect the bill.

03 / CONSIDER THE CHOICES

What can make a difference?

Explore what households, businesses and governments can change—and the tradeoffs involved.

See the gasoline sources See the healthcare sources

The local picture

Same expense.
Different place.

National guides explain the foundations. Local coverage will look more closely at the providers, rates, taxes and rules that change what households pay.

U.S. guides availableWashingtonKing CountySeattleRedmondLocal neighborhood

Washington and community guides are planned. You can use the prompt below now to investigate the expenses specific to where you live.

Explore expenses where you live

Your utility providers, local rules and property type all matter. If you have an HOA or condo association, include its dues, assessments and maintenance requirements too.

Copy this prompt into an AI chat, replace the bracketed fields, and ask it to research your location. The prompt separates government requirements from association rules.

Your local expense research prompt

Help me understand household expenses specific to where I live in the United States. Write plainly and use current, verifiable sources.

My location: [city or unincorporated area, state, county and ZIP code]
Neighborhood, if relevant: [name or leave blank]
Housing: [own or rent; house, condo, townhouse or apartment]
HOA or condo association: [name, none or unsure]
Known utility providers: [providers or unsure]
Expenses I want to investigate: [specific bills or all major local expenses]
Optional supporting information: [redacted bills, association documents, or household details relevant to these expenses]

1. Confirm the actual governing jurisdiction and service providers. Do not assume a mailing city or ZIP code establishes city limits, a tax district, or a utility service area. Ask only for missing details that materially affect the answer. Start without my exact street address; explain if more precise location information is essential.

2. Identify costs unique to this location and property: property taxes, utilities, insurance factors, permits and local fees, waste collection, septic systems, irrigation, drainage, landscaping and other relevant maintenance.

3. If an HOA or condo association applies, examine its dues, special assessments, reserves, shared services, insurance and maintenance responsibilities. Use available covenants, bylaws, adopted budgets, reserve studies, assessment notices and rules. Request relevant documents I can provide when they are not publicly available. Do not assume every association has the same requirements.

4. Distinguish government ordinances and taxes, utility rates, and private HOA or condo requirements. Identify who sets each charge or obligation, its source, and its effective date. Flag uncertainties about whether a rule applies to my property.

5. Separate recurring bills, annual charges, irregular maintenance and one-time assessments. Distinguish required expenses from optional spending. Avoid counting taxes or insurance twice when they are in escrow, or services already included in rent or association dues.

6. Label my actual charges, published rates, estimates and unknowns separately. Explain rate components and usage assumptions. Do not invent neighborhood averages or treat a nearby city's figures as my costs.

7. Produce a prioritized expense table showing the expense, amount or calculation if supported, payment frequency, responsible provider or authority, and source. Explain what my household can influence, useful questions to ask, potential options and their tradeoffs. Rank financial impact only when the evidence supports it.

State the research date, link current official sources, and finish with the unanswered questions and exact documents needed for a more accurate analysis.

Start with your city, county and ZIP code. Leave account numbers and other private details out of any documents you share. Review the sources behind the answer.

About Behind Your Bill

Everyday questions.
A wider understanding.

Created by Paul Kim, Behind Your Bill is a public education project about everyday household costs. The goal is to make complicated systems understandable, so you can ask better questions and make more informed choices.

Sources, evidence and uncertainty

Our approach is to link to original sources, explain assumptions and distinguish evidence from interpretation. Diagrams show relationships; they do not measure each factor’s effect unless explicitly stated. Examples and calculators are labeled when their numbers are hypothetical.

Policy, choices and tradeoffs

We examine what households, businesses and governments can influence. A policy may lower one person’s payment while shifting costs elsewhere. We aim to explain who benefits, who bears the cost, how long a change may take, and what remains uncertain.

Updates and calculator privacy

Guides display when their sources were reviewed. As the collection develops, substantive corrections will be dated and described on the affected guide. The gasoline and healthcare calculators run in your browser; the site does not send your entered values to a server.

Your bills,explained.

Every bill has a backstory.

What sets the price at the pump?

What goes into your healthcare bill?

Start with a bill you recognize.

Clarity starts withbetter questions.

What am I paying for?

Why does it change?

What can make a difference?

Same expense.Different place.

Everyday questions.A wider understanding.

Your bills,
explained.

Clarity starts with
better questions.

Same expense.
Different place.

Everyday questions.
A wider understanding.