Amortization Schedule: The Simple Explanation
An amortization schedule is a table that shows exactly how your loan will be repaid over time. For each EMI payment, it breaks down:
- Interest Component: How much of your EMI goes to the bank as interest
- Principal Component: How much actually reduces your loan balance
- Outstanding Balance: How much loan remains after that payment
💡 Key Insight
In the early years of your loan, most of your EMI goes to interest. In later years, most goes to principal. This is why prepaying early saves more money!
Visual Example: How EMI Split Changes Over Time
For a ₹50 Lakh loan at 8.5% for 20 years (EMI: ₹43,391):
Month 1 EMI Breakdown
Month 120 (Year 10) EMI Breakdown
Month 240 (Final) EMI Breakdown
Sample Amortization Schedule
Here's what the first 12 months look like for a ₹50 Lakh loan at 8.5% for 20 years:
| Month | EMI | Interest | Principal | Balance |
|---|---|---|---|---|
| 1 | ₹43,391 | ₹35,417 | ₹7,974 | ₹49,92,026 |
| 2 | ₹43,391 | ₹35,360 | ₹8,031 | ₹49,83,995 |
| 3 | ₹43,391 | ₹35,303 | ₹8,088 | ₹49,75,907 |
| 4 | ₹43,391 | ₹35,246 | ₹8,145 | ₹49,67,762 |
| 5 | ₹43,391 | ₹35,188 | ₹8,203 | ₹49,59,559 |
| 6 | ₹43,391 | ₹35,130 | ₹8,261 | ₹49,51,298 |
| 7 | ₹43,391 | ₹35,072 | ₹8,319 | ₹49,42,979 |
| 8 | ₹43,391 | ₹35,013 | ₹8,378 | ₹49,34,601 |
| 9 | ₹43,391 | ₹34,953 | ₹8,438 | ₹49,26,163 |
| 10 | ₹43,391 | ₹34,894 | ₹8,497 | ₹49,17,666 |
| 11 | ₹43,391 | ₹34,833 | ₹8,558 | ₹49,09,108 |
| 12 | ₹43,391 | ₹34,773 | ₹8,618 | ₹49,00,490 |
After 12 months: Paid ₹5,20,692 but loan reduced by only ₹99,510. The remaining ₹4,21,182 went to interest!
How Interest is Calculated Each Month
The formula for monthly interest is simple:
Monthly Interest Formula
Example for Month 1:
Why Understanding Amortization Matters
📊 Real Numbers That Will Shock You
For a ₹50 Lakh loan at 8.5% for 20 years:
- Total EMI payments: ₹1,04,13,840
- Total interest paid: ₹54,13,840 (more than the loan itself!)
- In first 5 years, you pay ₹26 lakh but loan reduces by only ₹6 lakh
How Prepayment Affects Amortization
When you make a prepayment (extra payment beyond EMI):
- The entire prepayment goes to reducing principal
- Next month's interest is calculated on the new lower balance
- More of your regular EMI now goes to principal
- This compounds over remaining months
Prepayment Impact Example
If you prepay ₹1 lakh in Month 12:
Types of Amortization Methods
Banks in India typically use:
- Monthly Reducing Balance: Most common. Interest calculated on balance at month start.
- Daily Reducing Balance: Some banks use this. Slightly lower interest as balance reduces daily.
- Annual Reducing Balance: Rare in India. Principal reduces only once a year.
⚠️ Watch Out
Some NBFCs still use "flat rate" interest which is NOT reducing balance. A 7% flat rate equals approximately 12-13% reducing balance rate. Always ask your lender which method they use!
🧮 See Your Own Amortization Schedule
Use our EMI calculator to generate a complete month-by-month breakdown of your loan with and without prepayments.
Open EMI Calculator →Key Takeaways
- ✅ EMI stays same, but interest/principal split changes monthly
- ✅ Early EMIs have ~80% interest, late EMIs have ~1% interest
- ✅ Prepaying early has maximum impact on total interest
- ✅ Even small monthly extras can save lakhs over loan tenure
- ✅ Always check if your bank uses "reducing balance" method