How to Calculate Equipment Loan Payments

Knowing how to calculate an equipment payment yourself lets you check proposals, compare terms, and understand exactly where your money goes. The math is the same standard amortization used for most fixed-payment loans. This guide shows the formula, a worked example, a spreadsheet shortcut, and common pitfalls. To skip the math, use a payment calculator.

All numbers below are illustrative only. The 9% figure is arbitrary and is not an Ashford rate, a typical rate, or an offer.

What you need

Amount financed (A): equipment price minus down payment, plus any financed fees or taxes
Annual rate: convert to a monthly decimal: r = annual rate ÷ 12
Term (n): number of monthly payments

The formula

Payment = A × r ÷ (1 − (1 + r)^−n)

The top half (A × r) is one month's financing cost on the full balance. The bottom half spreads the principal repayment across all n months, so the payment stays level.

Worked example

Illustrative inputs:

Equipment price: $55,000
Down payment: $5,000
Amount financed: $50,000
Illustrative rate: 9% per year → r = 0.09 ÷ 12 = 0.0075
Term: 48 months

(1 + r) = 1.0075
1.0075^48 ≈ 1.4314, so 1.0075^−48 ≈ 0.6986
1 − 0.6986 = 0.3014
A × r = 50,000 × 0.0075 = 375
Payment = 375 ÷ 0.3014 ≈ $1,244 per month

Total repayment ≈ $1,244.25 × 48 ≈ $59,724. Financing cost ≈ $59,724 − $50,000 ≈ $9,724.

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Spreadsheet shortcut

In Excel or Google Sheets:

=PMT(0.09/12, 48, -50000) → about 1,244.25

Change the rate, term, or amount to compare scenarios instantly. =PMT(rate/12, months, -amount) works for any fixed-rate, fixed-payment schedule.

Building an amortization schedule

For each month:

Financing cost = remaining balance × r
Principal = payment − financing cost
New balance = old balance − principal

Month 1 in the example: financing cost = $50,000 × 0.0075 = $375.00; principal ≈ $869.25; new balance ≈ $49,130.75. Each month, the financing-cost portion shrinks and the principal portion grows.

Common pitfalls

Using the annual rate in the monthly formula. Always divide by 12.
Forgetting financed fees or taxes in the amount financed.
Comparing monthly payments only. Always compare total repayment.
Ignoring structure differences. Leases, balloon payments, and seasonal schedules don't follow this simple formula.

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Checking a proposal

If a proposal lists the amount financed, term, and payment, you can plug them into a spreadsheet rate function (=RATE(48, -1244.25, 50000)*12) to back into the implied annual rate and compare it with what's stated. If the numbers don't reconcile, ask about fees or other items included.

Frequently asked questions

Does this formula work for leases?

Not exactly. Leases may include residual values or end-of-term options that change the math.

Why is my first payment mostly financing cost?

Because financing cost is calculated on the remaining balance, which is highest at the start.

What if the rate is zero?

The payment is simply the amount financed divided by the number of payments.

Are calculator results offers?

No. They're estimates. Actual terms are set by the financing source after its review.

Financing disclaimer: This page is general and educational. Ashford Capital Group is not a lender in connection with this information. Nothing here is an offer, a commitment to provide financing, or a guarantee of approval. Financing is provided by third-party financing sources and is subject to their credit review and approval; availability, rates, terms, and down payment vary and depend on your business, the equipment, and the full application. Commercial (business-purpose) financing only, for California businesses.

Internal links on this page

"How much does equipment financing cost?" → /resources/equipment-financing-cost
"Commercial equipment financing" → /commercial-equipment-financing
"Commercial truck financing" → /commercial-truck-financing

Image alt text suggestions

Spreadsheet showing the PMT function used to calculate an equipment loan payment
Hand-written amortization calculation on a notepad beside a calculator

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