Use this loan comparison calculator to calculate monthly payment, total interest. Review key inputs, formulas, scenarios, limitations, and FAQs.

Loan Comparison Calculator

Compare two loan offers by monthly payment, total interest, fees, total repayment, and overall estimated cost.

Loan A

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Loan B

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Loan Comparison Calculator

The Loan Comparison Calculator puts two offers side by side using the loan amount, annual interest rate, term, and an optional fee. It displays estimated monthly payments, total repayments, interest plus fees, and a cost comparison.

Treat the result as a comparison of the figures you enter, not as a lender quote or a complete account of what you will receive or owe. Check each offer’s final disclosure for APR, fee treatment, payment rules, and other terms that are not represented by the calculator’s displayed inputs.

Table of contents

What the calculator compares

For each loan, enter an amount, annual interest rate, term, and optional fee. The interface offers currency symbols for dollars, pounds, euros, taka, and rupees; term units of years or months; and fee units of a percentage of the loan or a fixed amount.

After you select Compare Loans, the results include an estimated better option, total cost difference, monthly payments, total repayments, interest plus fees, a status, and calculation details. These are estimates based on the information entered.

The comparison is only as useful as its inputs. If both offers are meant to fund the same expense, check whether they provide a similar amount of usable money and whether the quoted terms are current. Different loan amounts or repayment periods can produce different payments and costs even when the interest rates look similar.

The calculator cautions that actual costs may differ because of APR rules, compounding, lender fees, payment timing, prepayment rules, insurance, taxes, late fees, and whether fees are paid upfront or financed.

For each loan, enterThe calculator displays
Loan amountEstimated monthly payment
Annual interest rateEstimated total repayment
Term in years or monthsInterest plus fees
Optional fee as a percentage or fixed amountEstimated better option and total cost difference

How to enter two offers

1. Choose the currency symbol that matches the offers. The selector includes dollars, pounds, euros, taka, and rupees. Testing used only the default dollar setting, so check that your chosen symbol and figures match your offers.

2. Enter the amount, annual interest rate, and term for Loan A, then enter the corresponding figures for Loan B. Choose years or months to match the way each term is stated. Keep the units straight when comparing results.

3. Add a fee only when you know its amount and how it is expressed. You can select a fixed amount or a percentage of the loan. Check both the number and the unit: entering 2 as a fixed amount is not the same as entering 2 percent.

4. Select Compare Loans and read the result lines together. When Loan A’s amount was left blank during testing, the calculator displayed: “Loan A: Enter the loan amount.” Other validation cases were not tested, so enter complete offer details rather than relying on the calculator to interpret missing or unusual values.

Use figures from the lenders’ current disclosures rather than an old advertisement or informal estimate. If either lender revises its rate, fee, amount, or term, update the entry before using the comparison.

How to interpret the results

Monthly payment is the estimated recurring payment for each offer. It can help you assess whether a payment fits your budget, but it does not show which loan costs less overall. A smaller payment can accompany a longer term, so consider it alongside total repayment and interest plus fees.

Total repayment is the displayed amount paid through scheduled loan payments. Interest plus fees is a separate cost figure. In the observed fixed-fee example, the entered fee was reflected in that figure. Do not assume that total repayment includes every upfront or separately paid charge.

Estimated better option and total cost difference summarize the calculator’s comparison according to the inputs and its displayed cost treatment. They do not account for every contractual feature. “Better” is not a personal recommendation: a loan’s non-price terms or risks may matter to you.

The status and calculation details can help explain the comparison, but they do not replace a lender’s payment schedule. Check that the result makes sense against the offer documents, especially if a fee is paid separately, deducted from proceeds, or added to the loan balance.

Worked examples from the calculator

In one observed comparison, both loans were $15,000 for three years, with no fees entered. Loan A had a 7% annual rate and Loan B an 8% rate. The calculator displayed estimated monthly payments of $463.16 and $470.05, and total repayments of $16,673.63 and $16,921.64. With no fee entered, the interest-plus-fees figures matched those repayment totals. The result said Loan A may cost less, with a total cost difference of $248.01.

In a second observed comparison, both loans were $10,000 for three years. Loan A had a 7% rate and a fixed $500 fee; Loan B had an 8% rate and no fee. The calculator displayed monthly payments of $308.77 for Loan A and $313.36 for Loan B. Total repayments were $11,115.75 and $11,281.09, while interest plus fees were $1,615.75 for A and $1,281.09 for B. The result said Loan B may cost less by $334.66.

Displayed resultLoan A: 7% plus $500 feeLoan B: 8%, no fee
Monthly payment$308.77$313.36
Total repayment$11,115.75$11,281.09
Interest plus fees$1,615.75$1,281.09

Compare the same borrowing need

A stated loan amount is not always the same as the cash you can use. If a lender deducts a $900 fee from a $15,000 loan, for example, you receive $14,100 before any other deductions. If another lender provides the full $15,000, the offers do not provide the same usable amount even though their stated principal is identical.

The observed calculator results do not show a net-proceeds field, and the fee input does not indicate whether the fee is deducted upfront, paid separately, or financed. Ask each lender how much money will actually be disbursed and when the fee is charged. Keep that information beside the calculator’s comparison rather than assuming the entered fee determines how the lender handles it.

If the offers differ in amount, assess each against your actual cash need. For a refinance, compare the new offer with the current payoff balance and remaining schedule, not just the original loan amount. A lower new payment can reflect a longer repayment period as well as a different rate.

Interest rate, APR, and fees are different measures

The calculator asks for an annual interest rate; the observed interface did not show a separate APR input or APR result. Do not assume the rate field accepts APR in place of the contractual interest rate. Check the lender’s disclosure to identify the figure you are entering.

APR is a broader annualized measure that can incorporate certain borrowing charges, while the interest rate describes the rate applied to the loan balance under the contract. The exact treatment of fees depends on the loan and applicable rules. Compare APR with APR from the lenders’ disclosures, and keep the contractual rates, fees, payments, and terms visible as well.

A fee entered in the calculator can affect the displayed interest-plus-fees comparison, as the fixed-fee test showed. But the result alone does not establish whether the fee is included in APR, taken from the proceeds, or added to the balance. Use the lender’s itemized terms to answer those questions.

Consider terms the calculator does not show

The visible inputs and results do not describe every feature that can affect your decision. A variable rate can change after the initial quote, while the calculator displays a comparison based on the rate you enter. That comparison cannot predict future changes to a variable rate.

Check whether either offer has a balloon payment, prepayment penalty, required automatic-payment discount, collateral, co-signer requirement, optional insurance, or other conditions. These terms can affect flexibility, risk, or total cost even if the calculator results are close. The displayed comparison does not assign a value to them.

A secured loan may put pledged property at risk if you do not make payments. A lower estimated cost does not automatically outweigh that difference. Similarly, a longer term may lower the regular payment but keep the debt in place longer. Consider affordability and the full contract, not just the rate or estimated better option.

A practical checklist before deciding

Use the calculator as one step in a careful comparison:

Confirm both offers are current and provide enough usable cash for your need.

Choose the correct term units and enter the annual interest rate and fee in the matching units.

Compare the monthly payment with your budget, not only with the other offer’s payment.

Review total repayment and interest plus fees separately. Check how the lender handles any upfront or financed fee.

Compare APR with APR using the lenders’ disclosures; the observed calculator interface does not display APR.

Read the contract for rate changes, balloon payments, collateral, optional products, prepayment terms, and conditions attached to discounts.

If the calculator’s comparison seems inconsistent with a lender’s payment schedule, check the inputs and ask the lender to explain the difference before relying on the estimate.

Frequently asked questions

Does the calculator compare APR?

The observed interface asks for an annual interest rate and does not show a separate APR input or result. Compare APR figures from the lenders’ disclosures separately; APR and the contractual interest rate are not interchangeable.

What does the estimated better option mean?

It identifies which offer appears lower-cost based on the entered figures and the calculator’s displayed cost treatment. It is not an approval decision or a recommendation that considers your full contract, budget, or personal circumstances.

Does total repayment include the fee?

Do not assume so. In the observed $500-fee example, the fee appeared in interest plus fees, while total repayment matched the scheduled payment total. Confirm whether the lender deducts, separately charges, or finances its fee.

Can I compare loans with different terms?

You can enter different terms, but the offers will have different payment periods. Consider both monthly payments and total costs, and make sure the longer term is acceptable to you.

What if the loan amounts are different?

The comparison may not reflect the same borrowing need. Check how much usable cash each offer provides and compare the offers on a similar basis before interpreting the estimated cost difference.

How should I enter an origination fee?

Select the fixed-amount or percentage fee unit that matches the lender’s quoted fee. The observed results do not clarify whether the fee is deducted from proceeds, paid separately, or added to the balance, so verify that with the lender.

Can the calculator predict the cost of a variable-rate loan?

It displays an estimate using the annual rate you enter, but it does not predict future rate changes. Review the rate-adjustment terms and consider separate higher-rate scenarios when evaluating a variable-rate offer.

Does the calculator tell me whether I will be approved?

No. It compares the loan details you enter. Approval and final terms depend on the lender’s application and underwriting process.

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