1. The three numbers that decide everything
Every loan comparison comes down to three numbers:
- Principal: how much you borrow
- Interest rate: the cost of borrowing
- Tenure: how long you take to repay
Change any one, and the other two shift. A lower rate with a longer tenure can
cost more than a higher rate with a shorter tenure. Always compare the end result.
2. Total repayment vs. total interest
Total interest is what you pay for the privilege of borrowing.
Total repayment is principal + interest. When comparing loans of
the same principal, both metrics rank loans identically. When principals
differ, use total repayment.
⚠️ If two loans have different principals, comparing interest rates alone is meaningless. Compare the total cost of each.
3. Flat rate vs. reducing balance
A "flat 10%" is not the same as a "reducing 10%". Flat rate charges interest on the
full original principal for the entire tenure — the effective reducing rate is
roughly 1.8x higher. Always confirm which method a lender uses before comparing.
4. Fees and charges
The advertised rate is rarely the full cost. Watch for:
- Processing fee: usually 0.5–2% of the loan, deducted upfront
- Prepayment penalty: 1–2%, often waived on floating-rate loans
- Insurance: sometimes mandatory and bundled
- Documentation and legal fees: common on secured loans
To compare fairly, subtract fees from the principal and rerun the numbers.
5. Fixed vs. floating rate
A fixed rate gives certainty — your EMI never changes. A floating rate can go down
(saving you money) or up (costing you more). Floating rates are usually lower at
the start, but carry risk. Choose based on your tolerance for uncertainty and
your view on future rates.
6. Prepayment and foreclosure
If you plan to prepay or transfer your loan, check the penalties. Some lenders
charge 2–4% of the outstanding balance for early repayment. That can wipe out the
savings from a lower rate.
7. Common mistakes to avoid
- Chasing the lowest EMI. Longest tenure always gives the lowest EMI — and the highest total interest.
- Comparing flat and reducing rates. They're not the same.
- Ignoring fees. Processing and insurance add to the effective cost.
- Comparing different principals. Make sure you're comparing like for like.
- Forgetting about prepayment penalties. They can turn a "cheaper" loan into an expensive one.
8. How to use this calculator
- Enter the loan amount for each offer (they can differ).
- Set the interest rate and tenure for each.
- See EMI, total interest, and total repayment for each loan.
- The loan with the lowest total repayment is highlighted as the best deal.
- Use "Add loan" to compare up to three offers.
- Check the comparison summary table for a side-by-side view.
9. Final thoughts
Comparing loans is one of the highest-leverage financial decisions you can make.
A 0.5% rate difference on a ₹20 lakh loan over 20 years is worth over ₹1.3 lakh.
Take ten minutes to compare properly — it's the best-paid ten minutes of your
financial life.