About Rate and Reason

Rate and Reason is a free set of money calculators for 11 major US cities. Every tool gives you a number and explains, in plain English, why the number came out that way.

About the author

Sadaf Azeem is a freelance content writer who researches and writes about personal finance topics. She built Rate and Reason to make money math in major US cities simple and transparent. Every calculator uses published formulas and is checked against official sources such as the IRS, state tax agencies, county assessors, and city government websites. Sadaf is not a licensed financial advisor, tax professional, real estate agent, or insurance agent; the tools are for education and estimation only.

Our mission

Money math in big American cities is harder than it should be. A paycheck in New York City is reduced by three layers of income tax. A home purchase in Chicago can trigger three transfer taxes. A homeowner in Houston can lower a property tax bill through exemptions and an appraisal protest that many people never file. National calculators often skip these local rules or bury them in averages.

Rate and Reason exists to make those rules visible. The rate is the number you came for. The reason is the explanation of how it was calculated and which rule affected it most, so you can check the math yourself and ask better questions when you talk to a professional.

Why only 11 cities

The site covers New York City, San Francisco, Los Angeles, Houston, Dallas, Chicago, Miami, Atlanta, Boston, Seattle, and Washington DC. Keeping the list focused makes it possible to research each city's state tax, county property tax, transfer taxes, insurance minimums, and transit costs properly, and to write content that is specific to each place instead of the same page with a different city name.

How the calculators are built and checked

1. Start with the official rule. Each formula comes from the agency that sets it: IRS publications and withholding tables, state tax agency instructions, county assessor and appraisal district methods, city finance department schedules, state insurance department minimums, and local transit agency fare tables.
2. Store every figure in one place. Rates, brackets, thresholds, and exemptions live in a single data section in each calculator's code, labeled with the source name, source link, and tax year. This makes yearly updates easier to do and easier to check.
3. Test with worked examples. Each calculator is tested by working an example by hand from the official formula and confirming the tool gives the same answer. The worked example is shown on the page so you can follow it too.
4. Explain the result. The Reasoning box under each result describes which inputs and rules drove the number.
5. Flag what changes often. Where a figure changes frequently (rent increase caps, broker fee rules, transfer tax thresholds, insurance minimums), the page says so and asks you to confirm it with the official source.

Editorial policy

• Content is written to explain, not to push you toward a financial product or decision. Pages do not tell you what you "should" do with your money.
• Every tool page lists its sources, shows when it was last updated, and includes a disclaimer.
• Advertising does not influence calculator results or content. Ads are placed in clearly separated spaces and never between a calculator's inputs and its results.
• Insurance and cost-of-living figures that are not set by law, such as typical premiums or childcare prices, are labeled as estimates and linked to the survey or agency data they are based on.

How often data is updated

All calculators are reviewed at least once a year, typically after the IRS and state agencies publish the next year's brackets and limits in late fall and winter. Local figures are also updated when a city or county changes a rate, usually after its budget is adopted. Each page shows its "Last updated" date.

Found an error?

If a rate looks out of date or a result looks wrong, please email orenasara763@gmail.com with the page link and, if possible, the official source. Corrections are reviewed and the page's update date is changed when a fix is made. You can also use the contact page.