Calculate Per Diem on Auto Loan by Dividing Annual Interest by 365
Per diem on an auto loan represents the daily interest charge. To calculate it, divide your loan's annual interest rate by 365, then multiply by the principal balance. This figure helps understand daily interest costs and can be useful for payoff calculations or refinancing decisions.
Per Diem Formula Breakdown
- Convert annual interest rate to decimal (e.g., 6% = 0.06)
- Divide by 365 to get daily rate
- Multiply by current principal balance
Per Diem Calculation Examples
| Loan Balance | Interest Rate | Per Diem |
|---|---|---|
| $15,000 | 5% | $2.05 |
| $25,000 | 4.5% | $3.08 |
| $35,000 | 6% | $5.75 |
Why Per Diem Matters
- Helps estimate payoff amounts between payment dates
- Useful for comparing loan options
- Shows impact of interest on daily finances
Factors Affecting Per Diem
- Principal balance (decreases over time)
- Interest rate (fixed or variable)
- Loan term (longer terms mean more interest)