About PennyMath
PennyMath is a free financial calculator platform built for people in India, UAE, and the United States. We build interactive tools that help you make better financial decisions — from SIP planning to tax optimization to property investment analysis.
Why We Built This
Most financial calculator sites are either covered in ads that make them unusable, or they're too simple — just a formula with a single answer. We wanted tools that let you play with scenarios, compare options side-by-side, and actually understand the numbers behind your financial decisions.
Every calculator on PennyMath is:
- Interactive — sliders, real-time updates, visual charts
- Accurate — formulas sourced from government regulations and financial standards
- Free — no signup, no paywall, no email required
- Transparent — we show the formula and explain the math
Our Data Sources
We source our rates, tax slabs, and regulatory information from official government publications:
- India: Income Tax Department (incometax.gov.in), SEBI, RBI, Ministry of Finance quarterly notifications
- UAE: Ministry of Human Resources (MOHRE), Federal Tax Authority, Dubai Land Department
- US: IRS.gov, Federal Reserve, Bureau of Labor Statistics
Rates are reviewed and updated quarterly. The "last verified" date on each calculator shows when we last confirmed the data.
Affiliate Disclosure
Some pages contain affiliate links to financial products and services. If you sign up through these links, we may earn a commission at no extra cost to you. This helps us keep the calculators free. Affiliate relationships never influence our calculator results or recommendations.
Contact
PennyMath is a product of TechTools365. For corrections, suggestions, or partnership inquiries, reach us at contact@techtools365.com.