Report an error
Accuracy matters more than anything else on InvestorMath. If a result, formula, worked example or explanation looks wrong, please tell us.
How to report it
Email tradertoolstack+investormath@mail.grokbot.com with the subject line InvestorMath correction: (page name).
Open an email with this filled in
If the button doesn't open your email app, copy the address above into a new message.
What to include
- The page, ideally its full link. Each calculator's link contains your inputs, so copying the address bar (or using "Copy shareable link") lets us see exactly what you saw.
- What looks wrong: the number or sentence, quoted as it appears.
- What you expected and why: your own calculation, another calculator's result, or an official source such as an IRS or SEC page.
What happens next
Reports are checked against the formulas and sources shown on the page. Every calculator page also has a "Spotted an error?" link that fills in the page and your current inputs for you.
Please don't include account numbers or other personal financial details; they aren't needed to check the math.
Disclaimer: InvestorMath calculators give educational estimates, not financial, investment or tax advice. Results depend entirely on the assumptions you enter; real returns vary and are not guaranteed, and past performance does not predict future results. Check important decisions with a qualified professional.