EMI methodology
EMI calculator methodology guide
The review record for a future deterministic instalment and amortization calculator— before any financial output is made available.
Calculation not active
No guessed formula is presented as financial output.
The methodology review is still in progress. No EMI result or amortization schedule is produced until compounding, date treatment, rounding, edge cases, and approved examples are signed off.
Planned inputs
Three inputs. No hidden assumptions.
The labels are clear; the exact contract behind how they interact is not yet approved.Planned input 01
Loan amount
The principal value used as the starting point for a future repayment illustration.Planned input 02
Annual interest rate
The stated annual rate; compounding and periodic conversion rules remain under review.Planned input 03
Tenure
The repayment duration; month boundaries and partial-period behavior remain under review.Approval checklist
Five decisions before a result can exist
Every decision must be documented, versioned, and verified against accepted examples.- 01
Payment formula
Define the exact equation, sequence of operations, and zero-rate behavior.
- 02
Rate conversion
Define how an annual stated rate becomes the periodic rate used in the calculation.
- 03
Period boundaries
Define tenure units, start dates, partial periods, and final-payment timing.
- 04
Precision and reconciliation
Define internal precision, display rounding, and final-instalment reconciliation.
- 05
Invalid and edge cases
Define accepted ranges, overflow protection, impossible inputs, and user-facing recovery.
Future result contract
What a future result must explain
A number alone is not sufficient evidence of a trustworthy calculation.Periodic instalment—
Total interest—
Total repayment—
Amortization scheduleUnavailable
Method before interface