Loan Calculator

Introduction

This free loan calculator helps you figure out your monthly payment, total interest, and the full cost of a loan before you borrow. Enter your loan amount, interest rate, and loan term to get instant results along with a complete amortization schedule that shows exactly how each payment splits between principal and interest.

The calculator includes three modes to cover different types of loans. The Amortized Loan tab is the most common and works for auto loans, personal loans, student loans, and mortgages — any loan where you make regular payments over time. You can adjust the compounding frequency, payment frequency, and even add origination fees to see how they affect your total cost. If you want to pay off your loan faster, enter a higher amount in the accelerated payment field to see how much time and money you save.

The Deferred Payment tab calculates what you will owe when no payments are made until the end of the loan term. This is useful for deferred student loans or any situation where interest builds up over time. The Bond (Present Value) tab works in reverse — it tells you what a future sum of money is worth today based on a given interest rate, which is helpful for pricing bonds or comparing lump-sum offers. For more detailed bond analysis, try our Bond Value Calculator or Bond Yield Calculator.

How to Use Our Loan Calculator

Enter your loan details below and this calculator will show your payment amount, total interest paid, a full amortization schedule, and helpful charts. This tool has three modes: Amortized Loan, Deferred Payment, and Bond (Present Value).

Amortized Loan

Loan Amount: Type in the total amount of money you want to borrow. This can be any value from $1,000 to $10,000,000.

Annual Interest Rate: Enter the yearly interest rate on your loan as a percentage. For example, type 5.5 for a 5.5% rate. Most loans range from 3% to 15%. If you want to understand the true annual cost of your loan after accounting for fees and compounding, use our APR Calculator.

Loan Term: Set how long you have to pay back the loan. Enter the number of years and any extra months. The term must be at least 1 month.

Compounding Frequency: Choose how often interest is added to your balance. Options include annually, semi-annually, quarterly, monthly, semi-monthly, biweekly, weekly, daily, or continuously. Most loans use monthly compounding. To understand how compounding affects the growth of money over time, check out our Compound Interest Calculator.

Payment Frequency: Pick how often you make payments. You can choose from every day, every week, every 2 weeks, every half month, every month, every quarter, every 6 months, or every year. Most borrowers pay monthly.

Loan Fees / Origination Fees: If your lender charges an upfront fee, enter it here as a percentage of the loan. Typical origination fees range from 1% to 6%. Leave this at 0 if there are no fees.

Minimum / Accelerated Payment: If you want to pay more than the standard payment each period, enter that higher amount here. This lets you see how extra payments reduce your total interest and shorten the loan term.

Deferred Payment Loan

Loan Amount: Enter the amount you are borrowing, from $1,000 to $10,000,000. With a deferred loan, you make no payments until the end of the term.

Annual Interest Rate: Type in the yearly interest rate as a percentage. This is the rate at which interest builds up on your balance over time.

Loan Term: Enter the number of years and months until the loan is due. At the end of this term, you pay back the full balance including all interest that has built up. To see how quickly your balance doubles, try the Rule of 72 Calculator.

Compounding Frequency: Select how often interest is calculated and added to the loan balance. More frequent compounding means slightly more interest will accrue over the life of the loan. Our APY Calculator can help you understand the effective annual yield based on different compounding frequencies.

Bond (Present Value)

Face Value: Enter the amount that will be due at maturity — this is the future value of the bond or loan. You can enter any amount from $1,000 to $100,000,000. For a dedicated tool, see our Present Value Calculator.

Annual Interest / Discount Rate: Type in the yearly rate used to discount the future value back to today. This tells the calculator how much the money is worth right now compared to what it will be worth later.

Term to Maturity: Enter the number of years and months until the bond or loan reaches its maturity date and the face value is paid out.

Compounding Frequency: Choose how often the discount rate is compounded. This affects how the present value is calculated. Options range from annually to daily, or even continuously. You can also explore our Future Value Calculator to work through the calculation in the opposite direction.

What Is a Loan Calculator?

A loan calculator is a tool that helps you figure out how much you will pay when you borrow money. It takes your loan amount, interest rate, and loan term, then shows you your regular payment, the total interest you will owe, and the full cost of the loan. This makes it easier to plan your budget and compare different loan options before you commit.

How Loans Work

A loan is money you borrow from a bank, credit union, or other lender. You agree to pay it back over time, usually with interest. Interest is the fee the lender charges you for using their money. It is shown as a percentage called the annual interest rate. The higher the rate, the more you pay over the life of the loan. The loan term is how long you have to pay it back. A longer term means smaller payments each month, but you end up paying more interest overall.

Types of Loans Covered by This Calculator

Amortized Loans

An amortized loan is the most common type. You make equal payments on a regular schedule — usually monthly — until the loan is fully paid off. Each payment covers two things: part goes toward the principal (the original amount you borrowed) and part goes toward interest. Early in the loan, most of your payment goes to interest. Over time, more of each payment goes toward the principal. Car loans, personal loans, and mortgages are all examples of amortized loans. If you are specifically looking to pay off a mortgage faster, our Mortgage Payoff Calculator and Mortgage Extra Payment Calculator can help you explore those scenarios in detail.

Deferred Payment Loans

With a deferred payment loan, you do not make any payments during the loan term. Instead, interest builds up (or "accrues") on top of the original amount, and you pay everything back in one lump sum at the end. This is sometimes called a balloon payment. Some student loans during a grace period and certain business loans work this way. Because interest keeps growing on a larger and larger balance, the total amount due at the end can be much higher than what you originally borrowed.

Bond (Present Value) Calculation

The bond calculator works in reverse. Instead of starting with a loan amount, you start with a future amount — the face value — and figure out what it is worth today. This is called the present value. It answers the question: "If I need $50,000 in 10 years, how much is that worth right now at a given interest rate?" Investors use this concept when buying bonds, treasury bills, and other financial instruments sold at a discount. For deeper bond analysis, use our Bond Value Calculator to price coupon bonds, or our NPV Calculator to evaluate investments with multiple cash flows.

Key Terms to Know

• Principal: The original amount of money you borrow.
• Interest Rate: The yearly percentage the lender charges you for borrowing.
• Loan Term: The total time you have to repay the loan.
• Compounding Frequency: How often interest is calculated and added to your balance. Monthly compounding is the most common, but it can also happen daily, quarterly, or annually. More frequent compounding means slightly more interest over time.
• Payment Frequency: How often you make payments — monthly, biweekly, weekly, and so on. Paying more often can reduce total interest.
• Origination Fees: A one-time fee some lenders charge for processing the loan, usually 1% to 6% of the loan amount. This fee is often deducted from your disbursement, meaning you receive less money but still owe the full amount.
• Amortization Schedule: A table that shows every single payment broken down into principal and interest, along with your remaining balance after each payment.

Tips for Borrowers

Even a small difference in interest rate can save or cost you hundreds or thousands of dollars. Use the calculator to compare rates side by side. If you can afford to, try entering a higher payment in the accelerated payment field — you will see how paying extra each month reduces your total interest and helps you get out of debt faster. For a structured approach to eliminating multiple debts, explore our Debt Snowball Calculator or Debt Avalanche Calculator. Also pay attention to fees. A loan with a low rate but high origination fees can sometimes cost more than a loan with a slightly higher rate and no fees. Before taking on a new loan, it's smart to check your debt-to-income ratio to make sure the payment fits comfortably within your budget. If you're carrying credit card debt alongside a loan, paying off high-interest balances first can save you the most money overall.

Frequently Asked Questions

What is the formula used to calculate my monthly loan payment?

The calculator uses the standard amortization formula: Payment = P × r × (1 + r)^n / ((1 + r)^n − 1), where P is the loan principal, r is the interest rate per payment period, and n is the total number of payments. For example, a $25,000 loan at 5.5% for 5 years with monthly payments gives you a payment of about $477.53.

What is the difference between the three tabs in this calculator?

The Amortized Loan tab is for loans where you make regular payments over time, like car loans or mortgages. The Deferred Payment tab is for loans where you pay nothing until the end and then owe one big lump sum. The Bond (Present Value) tab tells you what a future amount of money is worth today at a given interest rate.

How does compounding frequency affect my loan cost?

The more often interest compounds, the more total interest you pay. For example, daily compounding adds interest to your balance every day, so interest grows on top of interest faster than with monthly or annual compounding. The difference is usually small, but it adds up over long loan terms.

What happens if I change the payment frequency from monthly to biweekly?

Biweekly payments mean you pay every two weeks, which gives you 26 payments per year instead of 12 monthly ones. This equals roughly one extra monthly payment each year. That extra payment goes toward principal, so you pay off the loan faster and save on interest.

How do origination fees affect my loan?

Origination fees are deducted from the money you receive, but you still owe the full loan amount. For example, if you borrow $25,000 with a 3% fee, the lender takes about $750 upfront. You only get about $24,250, but you repay the full $25,000 plus interest. This makes the true cost of borrowing higher than the interest rate alone.

How does the accelerated payment feature work?

Enter a dollar amount higher than your normal payment in the Minimum / Accelerated Payment field. The calculator will use that larger payment instead and show you how much faster you pay off the loan and how much interest you save. The extra money goes straight toward paying down the principal.

Why does most of my early payment go toward interest?

Interest is calculated on your remaining balance. At the start, your balance is at its highest, so the interest charge is large. As you pay down the principal, the balance shrinks, and more of each payment goes toward principal. This is how amortization works.

What does the amortization schedule show me?

The amortization schedule is a table listing every single payment over the life of your loan. For each payment, it shows how much goes to principal, how much goes to interest, and what your remaining balance is. You can expand each year to see individual monthly details.

What is continuous compounding?

Continuous compounding means interest is calculated and added to your balance constantly, every fraction of a second. It uses the mathematical constant e (about 2.718). It produces slightly more interest than daily compounding. In practice, most lenders do not use it, but it is common in finance theory and bond pricing.

Can I use this calculator for a mortgage?

Yes. Enter your mortgage amount, interest rate, and loan term (like 30 years or 15 years). Set the compounding and payment frequency to monthly. The calculator will show your monthly payment, total interest, and a full amortization schedule just like a dedicated mortgage calculator would.

What is the difference between interest rate and APR?

The interest rate is just the percentage charged on your loan balance. The APR (Annual Percentage Rate) includes the interest rate plus any fees, like origination fees, spread over the life of the loan. APR gives you a more complete picture of the true cost of borrowing.

How does a longer loan term affect my total cost?

A longer term gives you smaller monthly payments, but you pay interest for more years. This means you pay much more in total interest. For example, a $25,000 loan at 5.5% costs about $3,547 in interest over 5 years but about $11,948 over 15 years.

What is a deferred payment loan used for?

Deferred payment loans are common with student loans during grace periods, some business loans, and short-term financing deals. You make no payments during the loan term. Interest keeps building on your balance, and you pay everything back in one lump sum at the end.

What does present value mean in the Bond tab?

Present value is what a future amount of money is worth right now. If someone promises to pay you $50,000 in 10 years, that money is worth less today because you could invest a smaller amount now and let it grow. The Bond tab calculates exactly how much less based on the interest rate and term you enter.

What loan amount range does this calculator support?

The Amortized Loan and Deferred Payment tabs accept loan amounts from $1,000 to $10,000,000. The Bond (Present Value) tab accepts face values from $1,000 to $100,000,000.

How is the payoff date calculated?

The calculator starts from today's date and adds the number of payment periods needed to pay off the loan. If you use accelerated payments, the payoff date will be earlier than the original loan term because you are paying down the principal faster.

What is the effective annual yield shown in the Bond tab?

The effective annual yield is the true yearly return on a bond after accounting for compounding. It tells you the actual percentage your investment grows each year. It may differ slightly from the stated discount rate depending on the compounding frequency.