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Last updated: 2026-05-04
MoneyMath Hub is a free collection of finance and paycheck calculators built to make everyday money decisions easier to understand. Each tool shows the formula it uses, a step-by-step explanation, and a worked example. No sign-up, no account required, and fully mobile-friendly.
Get in touch
Email us at hello@moneymathhub.app for any of the following:
- • Feedback on an existing calculator or page
- • Correction requests (factual or formula errors)
- • Suggestions for new calculators or features
- • Press, partnership, or advertising inquiries
- • Privacy questions (see our Privacy Policy)
Response time
We read every message and aim to respond within a few business days. We cannot provide personalized financial, tax, investment, or legal advice — please consult a qualified professional for advice specific to your situation.
Reporting an error
When reporting an issue with a calculator, including the page URL and the inputs you used helps us reproduce and fix the problem quickly.
What to include
For the fastest turnaround on a correction or formula question, please include:
- • The page URL (for example, https://moneymathhub.app/calculators/mortgage)
- • The calculator name
- • The exact values you entered
- • The result you saw and the result you expected
- • A short note on the source you're comparing against (IRS publication, lender quote, payroll stub, etc.)
Contact identity
MoneyMath Hub operates on the moneymathhub.app domain, and our only official contact address is hello@moneymathhub.app. If you receive a message claiming to be from us at a different domain, please treat it as unverified and forward it to the address above.