DIPAZE
Free tool

Loan & Equipment Financing Calculator

Work out the monthly payment, total interest and payoff date for any fixed-rate loan, from a truck or equipment purchase to a business loan. Add a down payment, fees, extra payments or a balloon, see the amortization schedule and compare two offers side by side.

$
Before any down payment.
$
Optional.
%
Example rate. Use your quote.
$
Optional. Goes to principal.
$
Optional lump sum due with the last payment.
$
Optional. Financed fees add to the amount you borrow.
Optional. Adds calendar dates and a payoff month.

The values shown are examples. Replace them with your own numbers.

Monthly payment
$386.66/month
Amount financed$20,000.00
Total of payments$23,199.35
Total interest$3,199.35
Paid off after60 payments (5 years)
M = P x r / (1 - (1 + r)^-n)
P = $20,000.00, r = 6% / 12 = 0.5000% per month, n = 60
The last payment is $386.41 so the cents settle exactly.

Principal vs interest by year

Principal and interest paid each yearStacked columns of what you pay in each year of the loan. Principal in blue, interest in amber. Over the whole loan you repay $20,000.00 of principal and $3,199.35 of interest. The yearly summary table below has the same numbers.$0$2,320$4,64012345Loan year

■ Principal   ■ Interest

Amortization schedule

Amortization schedule
PaymentPrincipalInterestBalance
1$286.66$100.00$19,713.34
2$288.09$98.57$19,425.25
3$289.53$97.13$19,135.72
4$290.98$95.68$18,844.74
5$292.44$94.22$18,552.30
6$293.90$92.76$18,258.40
7$295.37$91.29$17,963.03
8$296.84$89.82$17,666.19
9$298.33$88.33$17,367.86
10$299.82$86.84$17,068.04
11$301.32$85.34$16,766.72
12$302.83$83.83$16,463.89

Showing the first 12 of 60 payments.

Yearly summary

Yearly summary
YearPrincipal paidInterest paidBalance at year end
1$3,536.11$1,103.81$16,463.89
2$3,754.20$885.72$12,709.69
3$3,985.76$654.16$8,723.93
4$4,231.59$408.33$4,492.34
5$4,492.34$147.33$0.00

How to use this tool

  1. Enter the loanType the price, any down payment, the APR and the term. Add fees, extra payments or a balloon if you have them.
  2. Read the payment and the costSee the monthly payment, total interest and payoff date, and how extra payments change them.
  3. Compare offersTick the comparison box to put a second offer next to the first and see the difference in payment and total interest.

How we calculate it

M = P × r ÷ (1 − (1 + r)−n)

  • M is the monthly payment, P the amount financed (price − down payment + financed fees)
  • r is the monthly rate: APR ÷ 12 (for example 6% gives 0.5%, or 0.005)
  • n is the number of monthly payments
  • At 0% APR the formula would divide by zero, so the payment is simply P ÷ n
  • With a balloon B: M = (P − B × (1 + r)−n) × r ÷ (1 − (1 + r)−n)

Each month the interest is the balance times r; the rest of the payment reduces the balance. Payments and interest are rounded to the cent every month and the last payment settles any leftover cents. The rate is treated as a nominal annual rate compounded monthly. Real loans can differ in fees, day-count methods and payment timing, so use this as a planning tool and rely on your lender's documents for exact figures. This is not financial advice.

Worked examples

1. A $20,000 loan at 6%

Over 60 months the payment is $386.66. The first month's interest is $20,000 × 0.5% = $100.00, so only $286.66 reduces the balance. You repay $20,000 of principal plus $3,199.35 of interest, $23,199.35 in all. Over 36 months the payment is $608.44 and interest $1,903.82; over 84 months it is $292.17 and interest $4,542.37. Each stretch lowers the payment and raises the total cost.

2. A 0% financing offer

A $12,000 purchase at 0% over 24 months is simply $12,000 ÷ 24 = $500.00 a month with $0.00 of interest. Check the fine print: a 0% offer can replace a cash discount, so the discount you give up is the real cost of financing.

3. Extra payments

Adding $100 to each payment on the first loan ends it in 47 months instead of 60, 1 year 1 month sooner, and saves about $754.99 in interest.

4. A balloon payment

Financing $30,000 at 5% over 36 months costs $899.13 a month. With a $10,000 balloon due at the end the payment falls to $641.08, but you owe $10,000.17 with the last payment and total interest rises from $2,368.58 to $3,079.05, because that principal stays outstanding for three years.

Common mistakes and pitfalls

  • Choosing by monthly payment alone. A longer term lowers the payment and raises the total interest. Compare the total of payments.
  • Ignoring fees. Origination, documentation and other fees raise the real cost. Add them in the financed fees field, or compare using the lender's APR disclosure.
  • Confusing the interest rate with the APR. They can differ when fees are included. Ask the lender which one is quoted.
  • Forgetting the balloon. A low payment can hide a large lump sum. Plan how you will pay or refinance it.
  • Prepayment penalties. Some loans charge for paying early, and some require extra payments to be marked as principal.
  • Financing something that wears out faster than the loan. Equipment that is worn out before the final payment leaves you paying for something you no longer use.
  • Assuming the first payment date. Interest starts accruing at funding, and the first payment may be more or less than a month later, which can change the real interest by a little.

Frequently asked questions

How is a loan payment calculated?
With the standard amortization formula M = P x r / (1 - (1 + r)^-n), where P is the amount financed, r is the monthly interest rate (APR / 12) and n is the number of monthly payments. For $20,000 at 6% over 60 months, r = 0.005 and the payment is $386.66. The payment stays level while the split changes: early payments are mostly interest, later ones mostly principal.
How much interest will I pay in total?
Total interest = total of all payments - the amount financed. On $20,000 at 6% over 60 months you pay about $3,199.35 in interest. Stretching the same loan to 84 months drops the payment to $292.17 but raises total interest to $4,542.37. A lower payment usually means a higher total cost.
What does an extra monthly payment do?
Extra money goes straight to principal, so the next month's interest is figured on a smaller balance. On the example loan, an extra $100 a month ends it 1 year 1 month early and saves about $754.99 in interest. Check that your lender applies extra payments to principal and charges no prepayment penalty.
What is a balloon payment?
A lump sum due when the term ends, in exchange for smaller payments along the way. Equipment financing often uses one, sometimes tied to the expected residual value. The loan is solved so that the balance left after the final regular payment is the balloon amount. Be sure you can pay it or refinance it when it comes due.
Is the APR here the same as my lender's APR?
Not necessarily. This calculator treats the rate you enter as the nominal annual rate compounded monthly, which is how most fixed-rate installment loans amortize. Lenders' disclosed APRs can include some fees, and real loans may differ in day-count conventions, first-payment timing, rounding and fees. Use it to compare and plan, and rely on your lender's disclosure for the final figures.
Should I put fees into the loan?
Financing fees increase the amount you borrow, so you pay interest on them. Paying them upfront costs less in total. Enter the fees in the financed fees field to see the difference, and compare offers by total cost and not only by monthly payment.

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