Commercial Real Estate Loan Calculator

The Commercial Real Estate Loan Calculator (CRE loan calculator) is a free online financial tool that helps you estimate the monthly payment, full amortization schedule, and balloon payment on a commercial property loan. Whether you are financing an office building, a retail center, a warehouse, a multifamily apartment complex, a hotel, or a mixed-use development, this commercial mortgage calculator gives you an accurate, lender-style forecast of what your loan will cost. Unlike a basic home loan calculator, it models the way real commercial real estate loans are actually structured — with a separate amortization period and loan term, an optional interest-only period, and key underwriting ratios such as Loan-to-Value (LTV) and Debt-Service-Coverage Ratio (DSCR).

In a few seconds you can see your monthly principal-and-interest payment, how much interest you will pay over the loan term, the size of the balloon payment due at maturity, and a detailed month-by-month and year-by-year amortization schedule with easy-to-read charts. Use it to compare offers from different lenders, test different down payments and interest rates, and decide whether a commercial real estate investment makes financial sense before you commit.

Example: How to use this calculator

Suppose you are buying an office building and borrowing $1,000,000 at a 6% annual interest rate. The lender amortizes the payment over 25 years but the loan matures (balloon is due) in 10 years, with no interest-only period. Here is exactly what to enter in each field:

Required fields

Optional fields (for LTV, DSCR and total cost)

You can leave these blank. Filling them in unlocks extra underwriting figures:

Click Calculate and you will see a monthly payment of about $6,443.01, a balloon payment of $763,519.81 due at the end of year 10, an LTV of 80% and a DSCR of 1.16 — plus the full amortization schedule and charts.

What Is a Commercial Real Estate Loan?

A commercial real estate loan is financing used to purchase, refinance, or develop income-producing property that is used for business rather than as a personal residence. Common examples include office space, retail shops, shopping centers, industrial warehouses, self-storage facilities, hotels, restaurants, and apartment buildings with five or more units. Lenders such as banks, credit unions, life insurance companies, and SBA-approved lenders provide these loans, and they evaluate both the borrower and the property's ability to generate income before approving the financing.

Commercial real estate loans differ from residential mortgages in several important ways. They usually carry higher interest rates, require larger down payments (often 20% to 35% of the purchase price), and have shorter terms. Most importantly, the loan term and the amortization period are usually not the same. This distinction is the single biggest reason borrowers misjudge the true cost of a commercial loan — and it is exactly what this calculator is designed to make clear.

Amortization Period vs. Loan Term: Why the Balloon Payment Matters

In a typical residential mortgage, the loan term and the amortization period are identical: a 30-year loan is paid off completely over 30 years, leaving a zero balance at the end. A commercial real estate loan works differently. Your monthly payment is calculated using a long amortization period — commonly 20, 25, or 30 years — which keeps the monthly payment low. However, the loan term (also called the maturity) is much shorter, often just 5, 7, or 10 years.

Because the loan is not fully paid off when the shorter term ends, the entire remaining balance becomes due in a single lump sum called the balloon payment. For example, a $1,000,000 loan amortized over 25 years but with a 7-year term will still have roughly $900,000 outstanding at the end of year seven. At that point the borrower must either pay the balloon in full, refinance the property, or sell it. Understanding the size of this balloon payment ahead of time is critical, and our commercial real estate loan calculator shows it clearly in the results summary and in the balance chart so there are no surprises at maturity.

Key Inputs Explained

To get the most accurate estimate from the CRE loan calculator, it helps to understand each input field:

• Loan Amount — the total amount you are borrowing after your down payment. This is the principal that will be amortized.
• Interest Rate — the annual interest rate quoted by your lender, entered as a percentage. Commercial rates are typically higher than residential rates and may be fixed or floating.
• Amortization Period — the number of years used to calculate the size of your monthly payment. A longer amortization period lowers the monthly payment but increases total interest and leaves a larger balloon.
• Loan Term / Balloon Due — the number of years until the loan matures and the remaining balance is due. This is usually shorter than the amortization period.
• Interest-Only Period — an optional number of early years during which you pay only interest and no principal. Interest-only periods are common in commercial lending and improve early cash flow, but they increase the balloon payment.
• Property Value — the appraised or purchase value of the property, used to calculate your Loan-to-Value (LTV) ratio.
• Annual NOI (Net Operating Income) — the property's yearly income after operating expenses but before debt payments. It is used to calculate the Debt-Service-Coverage Ratio (DSCR).
• Points and Other Fees — loan origination points (a percentage of the loan) and any flat closing fees, which are added to your total cost of borrowing.

Understanding LTV and DSCR

Two ratios drive almost every commercial real estate lending decision, and this calculator reports both.

Loan-to-Value (LTV) measures how much you are borrowing relative to the value of the property. It is calculated as the loan amount divided by the property value, expressed as a percentage. For instance, a $1,000,000 loan on a $1,250,000 property has an LTV of 80%. Most commercial lenders cap LTV between 65% and 80%, so a lower LTV generally means easier approval and better rates.

Debt-Service-Coverage Ratio (DSCR) measures whether the property generates enough income to cover its loan payments. It is calculated as the annual net operating income divided by the annual debt service (the yearly principal-and-interest payments). A DSCR of 1.00 means income exactly equals the loan payments, while a DSCR of 1.25 means the property earns 25% more than it needs to cover debt. Most lenders require a minimum DSCR of 1.20 to 1.25, so this ratio is one of the first numbers an underwriter will check.

How to Use This Commercial Real Estate Loan Calculator

Getting an estimate takes less than a minute. Follow these simple steps:

Step 1: Enter the loan amount you plan to borrow after your down payment.

Step 2: Enter the annual interest rate quoted by your bank or lender.

Step 3: Enter the amortization period in years (for example, 25) that the lender will use to size your payment.

Step 4: Enter the loan term in years (for example, 7), which is when the balloon payment becomes due.

Step 5 (optional): Add an interest-only period, property value, annual NOI, and any points or fees to unlock LTV, DSCR, and total-cost figures.

Step 6: Click Calculate. The result page instantly displays your monthly payment, total interest, balloon payment, LTV, DSCR, a complete amortization schedule (monthly and annual), and clear charts that visualize your remaining balance, interest, and principal over the life of the loan.

The Commercial Mortgage Payment Formula

This commercial loan calculator uses the standard amortizing mortgage formula to compute your monthly principal-and-interest payment:

A = P × r × (1 + r)ⁿ / ((1 + r)ⁿ − 1)

where A is the monthly payment, P is the loan amount (principal), r is the monthly interest rate (the annual rate divided by 12), and n is the total number of monthly payments in the amortization period. During an interest-only period, the payment is simply the loan balance multiplied by the monthly interest rate, with no principal reduction. The balloon payment is then the outstanding balance that remains when the loan term ends — before the amortization schedule would have reached zero.

Types of Commercial Real Estate Loans

Commercial financing comes in several forms, and this calculator can model most of them by adjusting the amortization period, term, and interest-only settings:

• Traditional bank loans — offered by banks and credit unions, usually with 5 to 10 year terms and 20 to 25 year amortizations, almost always ending in a balloon.
• SBA 504 and SBA 7(a) loans — government-backed loans for owner-occupied commercial property, often with longer terms and lower down payments.
• CMBS (conduit) loans — commercial mortgage-backed securities that frequently feature 10-year terms with 25 to 30 year amortizations and interest-only periods.
• Bridge loans — short-term, often interest-only financing used while a property is stabilized or repositioned.
• Hard money loans — asset-based loans with higher rates and short terms, used when speed matters more than cost.

Factors That Affect Your Commercial Loan Rate

Several factors influence the interest rate and terms a lender will offer on a commercial real estate loan. The property type and condition, its location, and its income history all play a role. Lenders also weigh the borrower's credit profile, experience, and net worth, along with the LTV and DSCR of the deal. Loans with lower LTVs, stronger DSCRs, and stabilized cash flow typically earn the most competitive rates. Broader market conditions — including benchmark interest rates and the lender's cost of funds — round out the pricing. Because each of these levers changes your monthly payment and balloon, it is worth running several scenarios in this calculator before approaching a lender.

Why Use an Online CRE Loan Calculator?

Running the numbers before you apply for commercial financing gives you a real advantage. This calculator saves hours of manual spreadsheet work and removes the guesswork from complex balloon and interest-only structures. It lets you instantly compare competing loan offers, test how a larger down payment or a shorter amortization changes your balloon, and confirm that the property's income comfortably covers the debt. By understanding your monthly payment, total interest, balloon obligation, LTV, and DSCR up front, you can negotiate with lenders from a position of knowledge and avoid committing to a loan that strains your cash flow. It is a fast, free, and practical first step for any commercial real estate investor or business owner.

Frequently Asked Questions

Is this commercial real estate loan calculator free?

Yes. It is completely free to use, with no sign-up required, and you can run as many scenarios as you like.

What is a balloon payment on a commercial loan?

A balloon payment is the large lump sum of remaining principal that is due when a commercial loan's term ends before it is fully amortized. Borrowers usually refinance or sell the property to cover it.

What DSCR do commercial lenders require?

Most lenders look for a minimum DSCR of about 1.20 to 1.25, meaning the property's net operating income is 20% to 25% higher than its annual loan payments.

Can I model an interest-only loan?

Yes. Simply enter the number of interest-only years, and the calculator will keep the balance flat during that period and recalculate the balloon accordingly.