Contact Calculation Guide
Found a calculation issue, have a privacy question, or want to suggest a useful tool? Email is the quickest way to reach the person who maintains the site.
Every message is read by the maintainer. There is no contact form, chatbot or newsletter, and your address is used only to reply.
Reporting a calculation error
A short, reproducible example lets us confirm a problem quickly. Please include:
- The calculator name or a link to the page.
- The inputs you entered, such as the loan amount, rate and term, or the salary and period.
- The result Calculation Guide showed and the result you expected, with where the expected figure came from, such as a bank statement, an FBR notice or a textbook.
- The date you used the tool, since rules such as tax slabs change by year.
Confirmed errors are corrected, the page's updated date changes, and a test is added for the case. If the difference comes from a convention, such as a lender charging a flat rate, we explain it on the page instead.
Suggesting a calculator or article
Tell us the question you were trying to answer and the rule or document it depends on. A new tool is added only when it answers a question existing pages do not, so a suggestion may become a new input mode or article instead of a separate page.
Privacy requests
You can use the same address to ask about the site's data practices or to request deletion of an email you sent. The Privacy Policy and Cookie Policy describe browser calculations, theme storage, hosting, and advertising and consent cookies.
Please avoid sending sensitive medical details, account numbers, passwords or full tax records. A simplified example is enough to check a calculation.