Loan Comparison Calculator
Compare up to 4 loan offers side-by-side
Monthly Payment Comparison
| Metric | Loan 1 | Loan 2 |
|---|---|---|
| Loan Amount | $250,000 | $250,000 |
| Interest Rate | 7.5% | 6.8% |
| Term | 15 years | 15 years |
| Monthly Payment | $2,317.53 | $2,219.21Best |
| Total Interest | $167,156 | $149,458 |
| Total Payments | $417,156 | $399,458 |
How to Use This Loan Comparison Calculator
Comparing loan offers is the single most effective way to save money on interest. Use this calculator to put up to 4 loan offers head-to-head and see exactly how much you can save.
Enter your competing loan offers
Use the sliders or text inputs to define up to 4 different loan offers. For example, enter the financing offer from your car dealership as 'Loan 1' and the pre-approval from your local credit union as 'Loan 2'.
Choose your true priority
Select whether your primary goal is the 'Lowest Monthly Payment' to fit a strict monthly budget, or the 'Lowest Total Interest' to save the maximum amount of money over the life of the loan.
Check the Winner Card
The highlight card at the top will instantly cut through the math and declare the winning loan. It calculates exactly how much cash you'll save compared to the worst option you entered.
Compare the amortization schedules
Don't just look at the top-level numbers. Open the 'Detailed Amortization Schedules' to see exactly how much of your payment goes to principal vs. interest in year one versus year five.
Expert Advice: The "Monthly Payment Trap"
When you're sitting at a dealership or applying for a personal loan, salespeople are trained to ask one question: "What monthly payment are you looking for?"
This is a trap. If you only focus on the monthly payment, lenders can easily lower it by simply extending the loan term (e.g., from 60 months to 84 months). While your monthly budget looks better on paper, you end up paying significantly more in total interest.
Real-World Scenario: Financing a $30,000 Car at 7% APR
You pay more each month, but you own the car outright 2 years sooner and save thousands.
You "save" $141 a month, but you bleed an extra $2,419 in pure interest over the life of the loan.
Decision Framework: How to Choose the Winner
Now that you've entered your loans into the calculator, how do you actually decide which one to take? Follow this simple framework to make the right choice for your financial situation.
Determine your absolute maximum monthly budget
Before looking at the offers, decide the maximum amount of cash you can comfortably part with each month. If a loan offer exceeds this amount, eliminate it immediately, regardless of how low the interest rate is.
Sort the remaining loans by "Lowest Total Interest"
Of the loans that fit your monthly budget, find the one that costs the least amount of total interest. This is mathematically the best deal.
Check for prepayment penalties
If two loans are very similar, choose the one that allows you to make extra principal payments without a fee. You can then take a slightly longer term for safety, but pay it off early to simulate a shorter term.
Beyond the Calculator: Hidden Costs to Compare
Our calculator gives you the exact math for principal, interest, and term. But when comparing real-world loan offers side-by-side, you need to read the fine print. Here are the hidden variables you should manually verify before signing.
1. Origination Fees
Very common in personal loans. The lender might offer a low 6% rate but charge a 5% origination fee. If you borrow $10,000, they take $500 right off the top, but you still pay interest on the full $10,000. Always compare the APR, not just the interest rate.
2. Prepayment Penalties
If you plan to pay off your loan early to save on interest, make sure your lender doesn't charge a prepayment penalty. An offer with a slightly higher rate but no penalty is often much better than a low rate that locks you in.
3. Fixed vs. Variable Rates
A 5% variable rate might look better than a 6.5% fixed rate today. But if the federal rates rise, your variable rate will shoot up, making your monthly payments unpredictable. For long-term loans, fixed rates provide crucial safety.
Comparing Different Types of Loans
While the math remains the same, the typical terms and rates vary wildly depending on the type of loan you are taking out.
| Feature | Mortgage | Auto Loan | Personal Loan |
|---|---|---|---|
| Best Use Case | Buying a home or refinancing | Buying a new or used car | Debt consolidation or large purchases |
| Typical Rates | Lowest (Secured by home) | Moderate (Secured by vehicle) | Highest (Unsecured) |
| Typical Terms | 15 to 30 years | 3 to 7 years | 1 to 7 years |
Loan Comparison FAQ
Common questions about comparing loan offers, EMIs, and interest rates.
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