Interest Calculator

Thinking of applying for a personal loan? Use this interest calculator to estimate the total amount of interest and monthly payments you would pay over the lifetime of a loan.

Loan Details


Total Interest


Months to Pay Off


It’s easy to get started

Keeping your debt in check means paying attention to your loan details—and that includes the interest payments you will pay over the life of your loan. When you check your rate for a personal loan through Upstart, you will see the APR (annual percentage rate) which includes the interest rate you’ve qualified for.

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Disclaimer: The Upstart interest calculator is for informational purposes only. The results generated from the calculator do not constitute an offer from Upstart.

How to use our interest calculator

This calculator is meant to help make the decision to apply for a loan much easier. When you plug in the numbers in the loan details area, the results can help you understand the total interest on a loan, the way monthly payments affect your total interest, and the loan amount you can afford.

Alternatively, knowing your debt-to-income ratio can also help you understand how much of your monthly earnings you could use to pay for debt i.e. a potential loan.

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Won't affect

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Interest calculator FAQs

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    How do I use Upstart’s interest calculator?

    Use it to find out an estimate of the total amount of money you would be paying in interest, and monthly payments over the loan term. You can increase or decrease the APR, so you can see how different APRs will impact your monthly payments.

    3 key numbers you need to know and understand are:
    - Loan amount. It’s the amount of money you want to borrow.
    - APR. This stands for annual percentage rate. It’s typically expressed as a percentage, and includes the interest rate plus any other fees such as origination fees.
    - Repayment term. Expressed as “Months to pay off” in the calculator, this is the time period you have to repay the loan you borrowed and it’s expressed in months.

    The results of the calculator will let you see the total interest and months required to pay off a loan.
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    How do I interpret my interest estimate results?

    Before you decide to take out a personal loan, you should understand the results of your loan estimate. Some basic terms to know when using our calculator and understanding the results are:
    - Months to pay off: The amount of time you have to pay off the total amount of your loan; it includes the amount you borrowed from your lender plus the interest rate and any additional fees.
    - Total interest: This is the amount you will pay a lender in interest over the entire life of your loan. It’s represented by a fee that the lender charges you for borrowing money.

    There are many other important terms to know before you owe. This helpful article covers 11 terms and will prepare you for making a smart decision when assessing how much to borrow.
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    How do interest rates and repayment terms affect my monthly payments?

    Generally, a loan with a longer repayment term will offer you a lower monthly payment because of the lengthier period of time. But, you will pay more in interest payments because the interest will add up over time.
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    What’s the difference between simple interest and compound interest?

    An interest percentage is either simple or compounded. Simple interest is based on the principal amount of a loan and it’s charged yearly—personal loans and auto loans commonly use simple interest. Compound interest is based on the principal amount and the interest that accrues over compounding periods of time—such as daily, quarterly, or annually. Examples that use compounded interest include savings accounts, certificates of deposit (CDs), and money market accounts.

    Our compound interest calculator is a great tool to use to see what compounding interest looks like.
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Won't affect

 your credit score¹

1. When you check your rate, we check your credit report. This initial (soft) inquiry will not affect your credit score. If you accept your rate and proceed with your application, we do another (hard) credit inquiry that will impact your credit score. If you take out a loan, repayment information may be reported to the credit bureaus.