Personal Loan Calculator

What is a personal loan calculator?

A personal loan calculator estimates what you may pay each month and how much interest you may owe over the loan term. Enter the amount you want to borrow, the APR, the term, any extra monthly payment and the origination fee.

The payment formula uses the amount financed, a monthly interest rate and the number of monthly payments. In the formula, P is the amount financed, r is the monthly rate and n is the number of payments. The calculator applies the formula to estimate the regular payment. Extra payments go straight to principal, which can reduce the balance faster and lower interest paid.

Why a personal loan calculator matters

A loan’s monthly payment is only part of its cost. A longer term can make each payment smaller while leaving you paying interest for longer. An origination fee can also affect the loan’s cost and the amount you receive, depending on how the lender handles it. Including the fee helps you review the estimate with that cost in view.

Use the estimate before you borrow for a major expense, consolidate debt or plan a home project. A home improvement loan calculator can help you compare borrowing costs with your project budget. If the payment would crowd out rent, savings or other bills, consider borrowing less, delaying the project or comparing different loan terms.

The calculator is useful for comparing offers, but it does not set your lender’s terms. Check the loan agreement for the payment schedule, fees, amount you will receive and any early repayment conditions. The CFPB’s explanation of APR can help you understand how APR describes borrowing costs.

How to use this personal loan calculator

1. Enter the amount you plan to borrow. Use the amount you need for the expense, not the maximum a lender may offer.
2. Enter the interest rate (APR) from the offer you are considering. Use the APR for that specific loan, since rates and fees can differ between offers.
3. Enter the term in years. A shorter term generally means a higher monthly payment and less time for interest to accrue, while a longer term generally means a lower payment and more time in repayment.
4. Enter any extra monthly payment you expect to make. The calculator applies extra payments to principal. Use an amount you can sustain alongside your other bills.
5. Enter the origination fee shown in the offer. Check the loan documents to see whether the lender deducts it from the proceeds or handles it another way.
6. Review the monthly payment, total interest and total of payments. Change one input at a time to see how a different amount, rate, term or extra payment changes the estimate.

Personal loan calculator example

How to read your personal loan results

Monthly payment is the estimated regular payment based on the information you entered. Compare it with your actual budget, not just with another loan’s payment. A payment that looks manageable may still leave too little room for other costs.

Amount financed is the amount the payment calculation uses as principal. Compare it with the amount you need to receive. If the lender deducts an origination fee from the proceeds, the amount deposited may be less than the loan balance you must repay; confirm the details in the offer documents.

How to lower your personal loan cost

1. 01

   Borrow only what the expense requires

   Get a written estimate for the project or expense, then enter the amount you actually need. A smaller balance means less principal to repay and can reduce interest, assuming the other loan terms stay the same.

2. 02

   Compare APR and fees together

   Review offers using both the APR and origination fee, along with the amount you will receive. Ask the lender to explain any fee and confirm how it affects your proceeds and repayment.

3. 03

   Consider a shorter term if the payment fits

   A shorter term can reduce the time interest accrues, but it raises the scheduled payment. Compare the estimate with your budget before choosing.

4. 04

   Pay extra toward principal when you can

   Enter a realistic extra monthly amount to see its effect. Confirm that the lender applies extra payments to principal and check whether the loan has early repayment conditions.

Common personal loan calculator mistakes

• Using an interest rate instead of the offer’s APR

  The calculator asks for APR. If you enter a different rate from the one in the lender’s offer, the estimate may not represent that loan’s cost.

• Leaving out the origination fee

  An omitted fee can make the comparison incomplete. Enter the fee shown in the offer and confirm how the lender applies it.

• Choosing by monthly payment alone

  A lower payment can come with a longer repayment period and more interest overall. Compare the total of payments and total interest as well.

• Assuming the estimate is a lender quote

  The result is an estimate based on your entries. Your approved rate, fees, payment schedule and loan conditions come from the lender’s final documents.

The personal loan formula

Key terms

APR

Annual percentage rate. It is the annual rate you enter to estimate the cost of borrowing.

Principal

The loan balance used to calculate interest and payments.

Amount financed

The principal amount used in the calculator’s payment formula.

Origination fee

A fee charged for setting up a loan. Check the lender’s terms to see how it affects the money you receive and repay.