Last updated: September 2026
COTaxCalc.com is a client-side web utility. We do not require account registration, and we do not store your home price, property address, mortgage terms, or financial calculations on our servers. All mathematical computations execute locally within your browser.
This website may display advertisements served by Google AdSense and third-party advertising partners. Google uses cookies (including the DoubleClick cookie) to serve ads to users based on their prior visits to this website or other websites across the Internet.
Users may opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.
We may use privacy-preserving web analytics to measure aggregate website traffic patterns, referral sources, and page performance to improve the user experience.
If you have questions regarding this Privacy Policy, you may contact the publisher at: danshuinteractive@gmail.com.