Have a question about how a calculator works, think you've spotted an outdated tax bracket or sales tax rate, or just want to share feedback? This is the right place to reach out about data errors, methodology questions, broken links, or general feedback on how the site could be more useful.
Data error
Spotted a wrong tax bracket or rate? Tell us which calculator and what looked wrong.
Methodology question
Want to understand how a calculation works or suggest an improvement?
General feedback
Something felt confusing or could work better? We want to know.
We aim to respond within 48 hours
We aim to respond to every message within 48 hours. For data corrections, please include which calculator you were using and what number looked wrong — that makes it much faster for us to verify and fix.
What to include
For data errors, the fastest way to get a fix is to tell us:
- Which calculator (mortgage, US tax, Canada tax, or auto loan)
- Which state or province
- What the calculator showed
- What you expected, or found elsewhere
This helps us verify and fix issues faster.
Response times
| Type of message | Expected response |
|---|---|
| Data error report | Within 7 days |
| General feedback | Within 48 hours |
| Methodology question | Within 48 hours |