Loan Comparison Calculator
Compare up to 3 loan options side by side. Calculate monthly payments, total interest, and total cost for different rates and terms.
About This Tool
The Loan Comparison Calculator lets you compare up to three loan offers side by side. Enter different interest rates, terms, and fee structures to see which loan saves you the most money over its lifetime. It highlights total cost differences and monthly payment variations to help you choose the best deal.
How to Use
- Select your currency (₩/$) and enter 2 or 3 loan conditions to compare.
- For each loan, enter a label, loan amount, annual interest rate, and loan term in years.
- Choose the repayment method for each loan: Equal Payment, Equal Principal, or Interest Only.
- Click the 'Compare' button to see the results.
- Review the comparison results — total interest, total payment, and monthly payments — to pick the best option.
Frequently Asked Questions
What is the difference between Equal Payment and Equal Principal?
Equal Payment (PMT) keeps your monthly payment the same throughout the loan term — a mix of principal and interest that stays constant. Equal Principal keeps the principal portion constant each month while interest decreases as the balance drops. Equal Principal results in lower total interest but higher initial payments.
What is Interest Only (Bullet) repayment?
With Interest Only (Bullet) repayment, you pay only the interest each month and repay the full principal at the end of the loan term. Monthly payments are the lowest, but total interest paid is the highest of all three methods.
Which repayment method is the most economical?
By total interest cost: Equal Principal < Equal Payment < Interest Only (Bullet). By initial monthly burden: Interest Only < Equal Payment < Equal Principal. Choose the method that best fits your cash flow situation.
How is this different from the regular Loan Calculator?
The regular Loan Calculator analyzes a single loan in detail with a full amortization schedule. This Loan Comparison Calculator lets you compare up to 3 different loan options (different rates, terms, or repayment methods) side by side to find the best deal.
Can I compare variable-rate loans?
This calculator assumes fixed interest rates. For variable-rate loans, the actual interest will change over time. You can use the current rate as a reference point for comparison purposes.
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How It's Calculated
For each loan option, the calculator computes:
1. Monthly Payment: M = P × [r(1+r)^n] / [(1+r)^n − 1] (equal principal & interest method) 2. Total Repayment = Monthly Payment × Number of Months 3. Total Interest = Total Repayment − Loan Principal 4. Total Cost = Total Interest + Origination Fees + Other Charges 5. Effective Annual Rate = adjusted rate including all fees
The comparison table shows the difference in total cost between each option. A lower monthly payment doesn't always mean a cheaper loan — a longer term increases total interest. The calculator helps you see this trade-off clearly.
⚠️ Disclaimer
Loan comparison results are based on the information you provide. Actual loan offers include additional factors like prepayment penalties, rate adjustment periods for variable rates, and credit score requirements. Always review the full loan contract before signing.
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