Contact
Help us make the tools more dependable
Specific, reproducible feedback is the fastest way to investigate a calculation, accessibility issue, broken source, or unclear explanation.
Last updated: July 13, 2026
Email the project
hello@stlfinancetools.com
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What to include
Calculator or website bug
Include the page, browser, reproducible steps, and non-sensitive example inputs.
Formula or source correction
Include the expected result, effective year, jurisdiction, and primary source.
General or business enquiry
Explain the request and the organization you represent. Commercial relationships must be disclosed.