Purpose of This Service
Mortgage Number Lab provides free online mortgage calculators and educational content to help US consumers understand mortgage costs, payment structures, and financial concepts related to home buying, homeownership, and refinancing.
The service includes:
- Mortgage payment calculators and estimators
- Amortization schedules
- Educational articles and explanations
- Methodology documentation
All calculator results are estimates for informational and educational purposes only.
Not Financial Advice
Nothing on Mortgage Number Lab constitutes personalized financial, mortgage, tax, legal, or investment advice. The website does not recommend any specific:
- Loan products or programs
- Lenders or brokers
- Financial strategies
- Tax positions
- Investment decisions
For guidance on your specific situation, consult a licensed mortgage loan originator, financial advisor, tax professional, or attorney. See our Financial Disclaimer for complete details about the limitations of calculator results.
Results Are Estimates Only
Mortgage calculations depend on inputs you provide and mathematical formulas. They do not account for all factors that influence your actual mortgage. Results may differ from lender calculations because of:
- Your specific interest rate, which depends on your credit profile and market conditions
- Lender-specific fees, closing costs, and points
- Actual property tax rates for your specific address
- Actual homeowners insurance premiums
- PMI rates specific to your lender, loan type, and credit score
- Escrow analysis adjustments
- Changes in adjustable-rate mortgage payments over time
- HOA fees, special assessments, or other property-specific costs
No Lender Relationship
Mortgage Number Lab (operated by Mortgage Number Lab) is not a:
- Mortgage lender or creditor
- Mortgage broker or loan officer
- Bank or financial institution
- Registered investment advisor
- Licensed financial planner
Using this website does not initiate a mortgage application, create a lending relationship, or constitute a pre-qualification or pre-approval of any kind.
Your Responsibility
You are solely responsible for verifying any calculator result before making a financial decision. We encourage you to:
- Cross-check important estimates with your lender's Loan Estimate documents
- Consult a licensed mortgage professional before committing to a loan
- Consult a financial advisor or tax professional when appropriate
- Confirm property tax and insurance figures with local authorities and insurers
Acceptable Use
You agree not to:
- Attempt unauthorized access to any part of the website or its infrastructure
- Interfere with the normal operation of the website
- Use automated tools to scrape the site in a manner that impairs its performance or availability
- Use the website for any unlawful purpose
- Misrepresent calculator results or our content in ways that could mislead others
Normal use by individuals, search engine crawlers, and academic researchers does not violate these terms.
Intellectual Property
The original text, design, source code, and branding of Mortgage Number Lab are owned by Mortgage Number Lab and are protected by applicable intellectual property laws.
The mathematical formulas used in the calculators are standard financial formulas in the public domain. We do not claim ownership of those formulas. Third-party trademarks referenced on this site (such as Google) are the property of their respective owners.
You may not reproduce, redistribute, or publish substantial portions of this website's content without permission, though you are welcome to quote brief excerpts with attribution and a link back.
Third-Party Links and Services
This website may link to external websites or use third-party services such as Google Analytics and Google AdSense. We are not responsible for the content, accuracy, privacy practices, or availability of any third-party website or service. Links to external sites are provided for convenience and do not constitute an endorsement.
Advertising
Advertisements may appear on this website, served by third-party advertising networks. Advertisers are independent parties and have no influence over calculator formulas, results, or editorial content. The presence of an ad does not constitute our endorsement of the advertiser or its products.
Availability
We aim to keep Mortgage Number Lab available and accurate, but we do not guarantee uninterrupted availability, error-free operation, or that the website will be free of viruses or other harmful components. We may update, modify, or discontinue any part of the service at any time without notice.
Limitation of Liability
To the fullest extent permitted by applicable law, Mortgage Number Lab will not be liable for any direct, indirect, incidental, special, or consequential damages arising from:
- Your use of or reliance on calculator results
- Any inaccuracy in content on this website
- Unavailability of the website
- Any decision you make based on information from this site
Calculator results are estimates only. Verify all figures with your lender before making any financial commitment.
Changes to These Terms
We may update these terms from time to time. When changes are made, the "Last updated" date at the bottom of this page will be revised. Your continued use ofMortgage Number Lab after any update constitutes your acceptance of the revised terms.
If you have questions about these terms, please contact us.