Loan Calculator
A loan calculator helps you determine the monthly payment, total interest, and total cost of any type of loan before you commit to borrowing. Whether you are considering a personal loan, a car loan, a student loan, or a small business loan, this calculator gives you a clear picture of what the loan will actually cost you over its entire term. The calculator takes three inputs: the loan amount, the annual interest rate, and the loan term in years. It then computes your monthly payment using the standard amortization formula, the total interest you will pay over the life of the loan, and the total amount you will pay back (principal plus interest). This is essential for comparing loan offers from different lenders, understanding the true cost of borrowing, and planning your monthly budget. A lower interest rate or a shorter loan term will reduce the total interest you pay, but may increase your monthly payment. Use this calculator to find the right balance between an affordable monthly payment and minimizing the total cost of the loan.
Formula
M = P x r x (1 + r)^n / ((1 + r)^n - 1) Where: M = Monthly payment P = Loan principal (amount borrowed) r = Monthly interest rate (annual rate / 12 / 100) n = Total number of payments (years x 12)
Example
Example: Borrow $20,000 at 7.5% annual interest for 5 years. Step 1: Monthly rate (r) r = 7.5 / 12 / 100 = 0.00625 Step 2: Total payments (n) n = 5 x 12 = 60 Step 3: Monthly payment (M) M = 20,000 x 0.00625 x (1.00625)^60 / ((1.00625)^60 - 1) M = $400.38 (approx) Step 4: Total interest = (400.38 x 60) - 20,000 = $4,023 Step 5: Total payable = 20,000 + 4,023 = $24,023 Result: You pay $400.38 per month for 60 months. The $20,000 loan costs $4,023 in interest, for a total of $24,023.
How to Use
- Enter the loan amount you want to borrow.
- Enter the annual interest rate (APR if known).
- Enter the loan term in years.
- Click Calculate to see your monthly payment, total interest, and total cost.
- Compare different rates and terms to find the most affordable option.
Frequently Asked Questions
How is the monthly loan payment calculated?
The monthly payment is calculated using the amortization formula: M = P x r x (1+r)^n / ((1+r)^n - 1), where P is the loan amount, r is the monthly interest rate, and n is the total number of payments. This formula ensures that every payment is the same amount and the loan is fully paid off by the end of the term.
What is the difference between APR and interest rate?
The interest rate is the cost of borrowing the principal, expressed as a percentage. The APR (Annual Percentage Rate) includes the interest rate plus any fees charged by the lender, such as origination fees or closing costs. APR gives you a more accurate picture of the true cost of a loan and is the better number to use when comparing loan offers.
Should I choose a shorter or longer loan term?
A shorter loan term means higher monthly payments but less total interest paid. A longer loan term means lower monthly payments but more total interest. For example, a 5-year loan at 7.5% on $20,000 costs $4,023 in interest, while a 10-year loan on the same amount costs about $8,660 in interest. Choose the shortest term you can comfortably afford.
What happens if I make extra payments on my loan?
Making extra payments reduces the principal faster, which means less interest accrues on the remaining balance. This can save you significant money and shorten the loan term. For example, paying an extra $100 per month on a 5-year, $20,000 loan at 7.5% can save over $600 in interest and pay off the loan about 14 months early.
What is loan amortization?
Amortization is the process of spreading a loan into fixed monthly payments over a set period. Each payment covers both principal and interest. In the early months, most of the payment goes toward interest, but as the principal decreases, more of each payment goes toward principal. By the end of the term, the loan is fully paid off.
Can I use this calculator for any type of loan?
Yes. This calculator works for any fixed-rate installment loan, including personal loans, car loans, student loans, and business loans. For mortgage loans that include property taxes and insurance, use the mortgage calculator instead, which accounts for those additional costs.