How Much Can You Afford for a Commercial Loan? A Practical Guide

Understanding Your Cash Flow and Budget

Before you can estimate how much you can afford to borrow, you need a clear picture of your business's cash flow. Cash flow is the money that comes in and goes out of your business each month. Lenders look at your net operating income — the revenue left after operating expenses — because that's the money available to repay debt.

Start by calculating your average monthly or annual net cash income. If your income is irregular, lenders may consider an average over two to three years. Understanding your cash flow helps you set a budget for loan payments that won't strain your operations.

• List all revenue sources and subtract operating expenses to find net cash income.
• Track expenses such as rent, utilities, payroll, inventory, and maintenance.
• Use conservative estimates if your income fluctuates seasonally.

Sources: Consumer Financial Protection Bureau, The Multifamily Group

Debt Service Coverage Ratio (DSCR) Explained

The debt service coverage ratio (DSCR) is a key metric lenders use to evaluate your ability to repay a commercial loan. It compares your annual net cash income to your total annual debt payments, including principal and interest.

To calculate DSCR, divide your annual net cash income by your annual debt service (total yearly loan payments). A ratio above 1.0 means your income exceeds your debt payments; a ratio below 1.0 signals that debt payments exceed income, which most lenders will not approve. A DSCR of 1.25x or higher is a common threshold for commercial loan approval.

• DSCR = Annual Net Cash Income / Annual Debt Service
• A DSCR of 1.25x or higher is a common minimum requirement for commercial mortgages.

Sources: The Multifamily Group, Janover

How to Calculate Maximum Loan Amount

Your maximum affordable loan amount is the loan size that keeps your DSCR at or above the lender's requirement, typically 1.25x. To find it, you work backward from your available cash flow.

First, determine how much additional annual debt payment you can take on while maintaining the required DSCR. In the example from a commercial lending resource, a property with $120,000 annual net operating income and $90,000 annual debt service has a DSCR of 1.33. To find the maximum debt service you could support at a 1.25 DSCR, divide your annual net operating income by 1.25.

Then, convert that annual debt payment into a maximum loan amount using the loan constant, which is the annual payment required per dollar borrowed, based on your interest rate and loan term. You can obtain the loan constant from a loan constant table, an amortization calculator, or your lender. Divide your maximum yearly debt payment by this constant to get your loan amount.

• Find your maximum annual debt payment: Annual Net Cash Income / Required DSCR.
• Obtain the loan constant for your estimated interest rate and term from a loan constant table or a commercial loan calculator.
• Divide the annual debt payment by the loan constant to estimate the loan amount you can afford.

Sources: The Multifamily Group

Considerations for New vs. Existing Businesses

For existing businesses with a track record, lenders use historical financial statements to calculate DSCR. If your income is variable, they may look at the lowest six-month average or an average over two to three years.

New businesses often lack the operating history needed to prove a reliable DSCR. In that case, lenders may rely on your personal credit, require a personal guarantee, or ask for additional collateral, and they may charge a higher interest rate to offset the risk.

• Existing businesses: Provide 2–3 years of financial statements to show stable cash flow.
• New businesses: Be prepared to offer personal guarantees or collateral, and expect higher rates.
• Lenders may use conservative income estimates for variable-income borrowers.

Sources: The Multifamily Group

Common Mistakes in Affordability Estimates

One common mistake is using a loan calculator that only factors in principal and interest, while ignoring other costs like property taxes, insurance, and maintenance. This can make a loan seem more affordable than it really is.

Another pitfall is using an unrealistic interest rate. Your rate depends on your credit profile and market conditions; using a rate that is too low will overstate how much you can borrow.

• Include all property-related expenses in your monthly budget.
• Get a rate quote from your lender to use a realistic figure.
• Consider how existing debts reduce your capacity to take on new payments.

Sources: Janover

Using a Commercial Loan Affordability Calculator

A commercial loan calculator can help you see how different loan amounts, interest rates, and terms affect your monthly payment. However, be aware that many calculators only handle principal and interest, so you'll need to manually add other costs.

When using such a calculator, input a realistic interest rate based on current market conditions and your credit standing. Test different loan amounts and terms to see what keeps your monthly payment within a comfortable range relative to your cash flow.

• Use the calculator to test 'what-if' scenarios for loan amount, rate, and term.
• Remember that your actual payment may be higher when you include taxes, insurance, and other fees.
• Verify your assumptions with a lender to ensure your estimate is realistic.

Sources: Consumer Financial Protection Bureau, Janover

Planning for a Safe Borrowing Level

A safe borrowing level is one that keeps your DSCR comfortably above the lender's minimum, not just at the edge. If your ratio is only 1.25, a small drop in revenue could push you below the threshold.

To build in a buffer, aim for a DSCR that is higher than the minimum, perhaps in the upper end of the 1.15–1.35 range, if your cash flow allows. This gives you room to handle unexpected expenses or slower periods.

• Calculate your loan amount at different DSCR levels to see the trade-off.
• Set a target DSCR cushion based on how variable your income is.
• Review your budget regularly to ensure you stay within safe limits.

Sources: Janover