99.9% Accuracy Target
CalcBit targets 99.9% calculation accuracy across all calculators. Every formula is implemented directly from official sources and tested against known values before deployment.
Testing Methodology
Unit Tests
Every calculation function has automated unit tests covering normal cases, edge cases (zero values, high values), and boundary conditions.
Verified Formulas
Formulas are sourced from official government publications, financial regulations, and established mathematical standards.
Manual Verification
Each calculator's output is manually verified against known results before launch and after each update.
What We Test
- → EMI formula matches the standard amortization formula E = P × r × (1+r)ⁿ / ((1+r)ⁿ - 1)
- → Income tax calculations match current FY 2025-26 official tax slabs
- → GST calculations follow CGST + SGST / IGST rules as per GST Act
- → SIP/compound interest calculations use the standard future value formula
- → FD maturity amounts use the compound interest formula with quarterly compounding
Reporting Issues
If you find a calculation error, please report it immediately to hello@calcbit.in. We investigate and resolve accuracy issues within 48 hours.