Understanding Loan Repayment Structures
Even with the same interest rate (APR), your total interest cost and monthly payments will vary depending on the chosen repayment method.
1. Key Repayment Methods
Equal Installment (Amortization)
Monthly payments of 'Principal + Interest' remain constant throughout the loan term.
- Characteristics: Interest is higher in the early stages; the principal portion increases over time.
- Benefit: Predictable monthly expenses for easier budgeting.
Equal Principal
A fixed amount of principal is paid every month, plus interest on the remaining balance.
- Characteristics: Initial payments are the highest and decrease over time.
- Benefit: results in the lowest total interest cost among the three methods.
Bullet Repayment (Lump-sum)
Only interest is paid during the term, with the full principal due on the maturity date.
- Characteristics: Since the principal never decreases, this has the highest total interest cost.
- Benefit: Minimum monthly burden during the loan term.
2. Tips to Reduce Loan Interest
- Right to Rate Reduction: Legally, you can request a lower rate from your bank if your credit score improves, or if your income/position at work increases.
- Prepayments: Check for prepayment penalty-free periods. Paying back principal early whenever you have extra funds significantly reduces long-term interest.
- Preferential Rates: Ensure you meet bank requirements for 'Preference Rates' (e.g., direct deposit, credit card usage benchmarks) to lower your APR.
3. Monthly Interest Calculation
Most loans calculate interest on a monthly basis.
- Monthly Interest ≈ Remaining Principal × (APR ÷ 12)