Loan Comparison Calculator
Compare up to 4 loans side by side to find the best option based on monthly payment, total interest, and total cost
Calculate with Loan Comparison Calculator
Comparison Summary
Side-by-Side Comparison
| Metric | Loan 1 | Loan 2 |
|---|---|---|
| Loan Amount | $250,000 | $250,000 |
| Interest Rate | 6.5% | 6.5% |
| Term | 30 years | 30 years |
| Extra Payment | $0.00/mo | $0.00/mo |
| Monthly Payment | $1,580.17 | $1,580.17 |
| Total Interest | $318,861.22 | $318,861.22 |
| Total Cost | $568,861.22 | $568,861.22 |
| Cost Gap vs Lowest | Lowest | Lowest |
| Payoff Date | Jun 2056 | Jun 2056 |
Total Cost Comparison
Amortization Formula
Assumptions
Use Loan Comparison Calculator for financial estimate planning when you need a clear estimate, transparent inputs, and a result you can review before taking the next step.
Worked example
When To Use Loan Comparison Calculator
- Start with a representative scenario in Loan Comparison Calculator so rates, dates, balances, or other key assumptions match the question you are comparing.
- Review whether the estimate matches the planning scenario before you use it for a budget, plan, or discussion.
Sample Input And Output Checks
- Start with inputs that match the real scenario, not only a rounded placeholder.
- Review amount, rate, term, timing, fees, tax treatment, and decision horizon before trusting the output.
- Use the result as an estimate to review against statements, lender terms, tax forms, quotes, or qualified advice when the decision is material.
About This Tool
Side-by-Side Loan Comparison Tool for Smarter Borrowing Decisions
Our free loan comparison calculator lets you evaluate up to four loan offers side by side, making it straightforward to identify which option saves you the most money over the life of the loan. Whether you are a first-time homebuyer comparing mortgage quotes from multiple lenders, a car buyer weighing dealership financing against credit union rates, a small business owner evaluating SBA loan options versus conventional business loans, someone considering refinancing an existing mortgage or student loan, or a financial advisor helping clients choose between competing offers, this tool calculates monthly payments, total interest paid, total cost of borrowing, and estimated payoff dates using the standard amortization formula that lenders themselves rely on. The extra monthly payment feature lets you model accelerated payoff strategies on each loan independently, so you can see how adding even a modest amount to your monthly payment affects the total interest and timeline. For a deeper dive into the month-by-month payment breakdown of your chosen loan, pair this tool with our Amortization Calculator to generate a complete amortization schedule showing exactly how each payment is split between principal and interest.
Technical Details: Amortization Formula, APR vs. Interest Rate, and Fee Analysis
Each loan in the comparison is calculated using the standard amortization formula: M = P x [r(1+r)^n] / [(1+r)^n - 1], where M is the monthly payment, P is the principal or loan amount, r is the monthly interest rate (annual rate divided by 12), and n is the total number of monthly payments (loan term in years multiplied by 12). This formula produces the fixed monthly payment amount that fully amortizes the loan over its term, meaning the balance reaches zero after the final payment. Understanding the distinction between APR (Annual Percentage Rate) and the nominal interest rate is critical when comparing loan offers. Our calculator focuses on the core amortization math, and you can use our APR Calculator to factor in fees and points for a complete APR comparison between offers.
Use Cases: Mortgage Shopping, Auto Loans, Student Loan Refinancing, and Debt Consolidation
Mortgage shopping is a common use case for loan comparison because small rate, term, or fee differences can compound across many payments. Auto loan comparison is equally valuable, as dealership financing, bank loans, credit unions, and online lenders may structure offers differently. For auto-specific calculations with trade-in values and down payments, try our Auto Loan Calculator for a more detailed analysis tailored to vehicle purchases.
Comparison with Financial Platforms and Best Practices for Loan Shopping
Rate marketplaces and lender sites can help you collect offers, but advertised rates may not match the final terms quoted for your credit profile, down payment, collateral, or fees. This calculator complements quote shopping by letting you enter the actual numbers you receive and compare them on equal footing. For understanding how compound interest affects your long-term wealth building alongside your borrowing costs, explore our Compound Interest Calculator and our Finance Calculator to build a complete picture of your financial strategy that balances debt management with savings and investment growth.