LOANS & DEBT
Loan Comparison Calculator — Compare Offers Side by Side
By Worldtickers ·
Use our free loan comparison calculator to line up two or more loan offers side by side and see which one actually costs less. It ranks every offer by total cost — monthly payment times term, plus fees — rather than by rate or payment alone, and flags the cheapest one automatically.
This loan comparison calculator — compare offers side by side tool focuses on use our free loan comparison calculator to line up two or more loan offers side by side and see which one actually costs less. It ranks every offer by total cost — monthly payment times term, plus fees — rather than by rate or payment alone, and flags the cheapest one automatically. Use it to compare borrowing costs, monthly payments, interest charges, payoff timelines, and refinance or repayment choices by changing the rate, term, balance, and payment assumptions.
Loan Comparison Calculator
Loan Comparison Calculator
Add every loan offer you are considering — the amount, rate, term, and any fees. We calculate the monthly payment and total cost of each one side by side and flag the offer with the lowest total cost.
Why Total Cost Matters
When you're shopping loan offers — for a car, a personal loan, a refinance, anything — it's tempting to compare them by whichever single number is easiest to look at: the monthly payment, or the interest rate. Both are incomplete on their own. The monthly payment depends heavily on the term, so a longer-term loan can look "cheaper" per month while costing more overall. The interest rate ignores the term and any fees entirely, so a lower rate with a longer term or a bigger fee can lose to a higher rate with a shorter term and no fee.
Total cost is the number that actually answers the question "how much will this loan cost me, start to finish?" It's every scheduled payment added together, plus any origination or closing fees charged upfront. This calculator computes that number for every offer you enter side by side, so you're comparing apples to apples instead of trying to mentally trade off rate against term against fees.
This matters most when you're comparing structurally different offers — say, a credit union loan with no fees and a shorter term against an online lender's loan with a lower rate, a longer term, and a fee attached. The two can look similar on their headline numbers while actually costing meaningfully different amounts in total, which is exactly the scenario the worked example below walks through.
How to Use This Calculator
The calculator starts with two example offers already filled in so you can see how it works immediately — replace them with your own real quotes, or add more.
Offer Name, Amount, Rate, and Term
Give each offer a name (the lender, or anything that helps you tell them apart), then enter the loan amount, the interest rate (APR), and the term in months exactly as quoted to you. These four fields are all you need for the calculator to compute each offer's monthly payment.
Fees
Enter any origination fee, application fee, or closing cost as a flat dollar amount. If a lender quotes a fee as a percentage, multiply it by the loan amount first to get the dollar figure. Leave this at 0 if a particular offer has no fees.
Adding and Removing Offers
Click "Add Loan Offer" to compare a third, fourth, or additional offer — there's no limit. You need at least two offers to run a comparison, so the remove button is disabled once you're down to two. Click "Compare Loan Offers" to see every offer's monthly payment, total of payments, fees, and total cost in a single table, with the lowest total cost automatically marked "Best Value."
The Formula Explained
For each offer, the calculator first computes the monthly payment using the standard loan amortization formula:
M = P × r × (1 + r)^n / [(1 + r)^n − 1]
Where M is the monthly payment, P is the loan amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the term in months. From there:
Total of Payments = Monthly Payment × Term
Total Cost = Total of Payments + Fees
The calculator computes Total Cost for every offer you enter, then marks whichever offer has the lowest Total Cost as "Best Value." Note this can — and often does — differ from whichever offer has the lowest monthly payment or the lowest rate, since a longer term or an added fee can raise the total cost even when one of those two headline numbers looks more attractive.
Real-World Examples
Example 1: The Calculator's Default Offers — Lower Rate Doesn't Win
The calculator loads with two example offers for a $20,000 loan: a Credit Union offer at 6.9% APR over 60 months with no fees, and an Online Lender offer at 5.9% APR over 72 months with a $500 fee. The Credit Union's monthly payment works out to approximately $395.08, for a total of payments of about $23,704.80 and — with no fees — a total cost of about $23,704.80. The Online Lender's monthly payment is lower at approximately $330.56 thanks to its lower rate and longer term, giving a total of payments of about $23,800.32, but adding its $500 fee brings the total cost to about $24,300.32.
Despite having the lower advertised rate and the lower monthly payment, the Online Lender offer actually costs about $595 moreover its life than the Credit Union offer. The longer 72-month term keeps the balance outstanding for a full year longer than the 60-month offer, and the $500 fee adds on top of that — together outweighing the rate advantage. This is the calculator's "Best Value" flag in action: it correctly picks the Credit Union offer even though neither its rate nor its payment is the lowest of the two.
Example 2: Three Offers for the Same Auto Loan
Suppose you're financing a $25,000 car and get three quotes: your bank at 7.2% over 60 months with no fee, a credit union at 6.5% over 72 months with no fee, and the dealer's financing at 5.9% over 72 months with a $600 dealer processing fee. Entering all three lets you see, in one table, whether the dealer's lower headline rate actually beats the credit union's slightly higher rate once its fee is added — rather than trying to compare three different rate-term-fee combinations in your head.
Example 3: Refinancing to a Shorter Term
You currently have a loan quote at 9% over 48 months and a refinance offer at 7.5% over 36 months with a $300 refinance fee. Even though the refinance carries a fee, the combination of a lower rate and a shorter term (less time for interest to accrue) frequently produces a lower total cost — but the size of that saving depends on the exact numbers, which is precisely why running both through the calculator, rather than assuming a lower rate or shorter term automatically wins, gives you the real answer.
Tips and Limitations
Get an Itemized Fee List From Every Lender
Fees hide in different places depending on the lender and loan type — origination fees, application fees, processing fees, closing costs. Ask each lender for a complete, itemized list before entering their offer, since an incomplete fee figure understates that offer's true total cost and can flip which offer actually wins.
Compare Offers of the Same Loan Amount When Possible
This calculator ranks offers by their absolute total cost, so comparing a $20,000 offer against a $25,000 offer will naturally favor the smaller loan regardless of terms. When you're shopping the same purchase, try to get quotes for the same loan amount from each lender so the comparison isolates rate, term, and fees rather than being skewed by a different principal.
Total Cost Isn't the Only Factor
The offer with the lowest total cost is the cheapest option financially, but a higher monthly payment over a shorter term might strain your budget in a way a lower payment wouldn't, even if it costs more overall. Weigh the "Best Value" result against what payment you can comfortably sustain each month, especially if your income or expenses might change during the loan term.
This Calculator Assumes Fixed Rates and On-Time Payments
It doesn't model variable-rate loans, prepayment penalties, or late fees — all of which can change an offer's real cost if they apply. If a variable-rate offer is on the table, run the comparison using its current rate as a baseline, and separately confirm whether a rate increase later would change your conclusion.
Frequently Asked Questions
Why should I compare loans by total cost instead of monthly payment?
Monthly payment tells you what fits your budget today, but it hides how long you're paying and how much you're paying in total. A loan with a lower monthly payment achieved through a longer term can easily cost more overall than a loan with a higher payment over a shorter term, since you're accruing interest for more months. Total cost — the sum of every payment plus any fees — is the only number that tells you, in dollars, what the loan actually costs you from start to finish, which is why this calculator ranks offers by that figure rather than by payment or rate alone.
Why should I compare loans by total cost instead of interest rate?
The advertised interest rate only describes the cost of the balance you owe — it says nothing about the term length or any upfront fees, both of which materially change what you pay. A loan with a lower rate but a longer term or a large origination fee can cost more in total than a loan with a slightly higher rate, shorter term, and no fee. Rate is one input among several; total cost is the output that actually accounts for all of them at once, which is why it's the more reliable number to make a decision on.
How do fees factor into the total cost comparison?
This calculator adds each offer's fees directly on top of its total scheduled payments — Total Cost = (Monthly Payment × Term) + Fees — so a loan with a lower rate but a larger origination fee, application fee, or closing cost can still lose to an offer with a slightly higher rate but no fees, once the totals are compared. Always ask each lender for a complete, itemized fee list before comparing, since a rate quoted without its associated fees isn't the full picture of what you'll actually pay.
Can I compare more than two loan offers at once?
Yes — use the "Add Loan Offer" button to add as many offers as you're considering, and the calculator will rank all of them by total cost, flagging the cheapest one as "Best Value." This is useful when you've gotten quotes from a bank, a credit union, and an online lender for the same purchase and want to see all three ranked together rather than comparing them two at a time in your head.
What if two loans have the same total cost but different monthly payments?
If two offers land on a nearly identical total cost, the decision comes down to what fits your monthly budget and your priorities beyond pure cost — a lower monthly payment over a longer term gives you more breathing room now but ties up your finances for longer, while a higher payment over a shorter term frees you from the debt sooner. In that case, the loans are roughly equivalent financially, so choose based on cash flow flexibility, prepayment terms, and how soon you want to be debt-free.
Does the loan with the shortest term always have the lowest total cost?
Not necessarily — it depends on the interplay between rate, term, and fees. A shorter term generally reduces total interest since the balance is outstanding for less time, but if the shorter-term offer carries a meaningfully higher rate or a large fee, a longer-term offer with a lower rate and no fee can still come out cheaper overall. This is exactly why comparing total cost directly, rather than assuming term length settles the question, matters — run the actual numbers for each offer rather than guessing.
Should I include a co-signer's or joint applicant's effect on my comparison?
This calculator compares the loan terms themselves — amount, rate, term, and fees — as quoted to you. If a co-signer changes the rate one or more lenders offer, get an updated quote reflecting that rate before comparing, since the rate a lender approves with a co-signer can differ meaningfully from what you'd qualify for alone. Enter each lender's final, co-signed (or individual) quote as its own offer so the comparison reflects what you'd actually be signing.