About MortgageMathLab
We believe everyone deserves access to clear, accurate mortgage math — without paying for it or giving up their personal information.
What We Offer
MortgageMathLab is a comprehensive, completely free resource for understanding the true costs of homeownership. Our platform includes:
- 22+ free calculators covering mortgage payments, affordability, closing costs, rent vs. buy analysis, amortization schedules, FHA loans, VA loans, PMI, refinancing, and more
- 50 state guides with localized property tax rates, closing cost estimates, insurance data, and down payment assistance programs
- 750+ city pages with neighborhood-level mortgage data and cost breakdowns
- State and city comparison tools to help you evaluate where to buy
- An educational glossary explaining every mortgage term you need to know
- In-depth blog articles covering first-time buyer strategies, loan types, and market insights
Why We Built This
Mortgage calculators on bank and lender websites are designed to generate leads. They ask for your phone number, email address, and personal details before showing you a single number. Then the sales calls start.
MortgageMathLab is different. Our calculators are designed to give you accurate answers. No login required. No personal information collected. No sales calls. Just the math you need to make informed decisions about one of the biggest financial commitments of your life.
How We Make Money
MortgageMathLab is supported by advertising. We display ads through Google AdSense. This advertising revenue is what keeps all of our tools, calculators, and content completely free for everyone. We do not sell your data, and we do not accept payment from lenders to influence our calculations or recommendations.
Our Data
Our property data comes from public records, U.S. Census Bureau data, and state housing finance agency reports. We source property tax rates from county assessor offices, closing cost data from state-level surveys, and insurance estimates from industry averages. We update our data regularly to reflect current market conditions and ensure our calculators provide the most accurate estimates possible.
Sister Sites
MortgageMathLab is part of a family of free financial tools:
- CapRateCity — Real estate cap rate calculator and investment analysis for every city in the U.S.
- TakeHomeTax — Free take-home pay calculator and state-by-state tax comparisons
- InsuranceCostCity — Compare home and auto insurance costs by city and state
Contact Us
Have questions, feedback, or a data correction? We'd love to hear from you.