How Much of a Business Loan Can I Get? Lender Formulas Explained

How lenders size a business loan: the cash flow math, revenue and collateral limits, program caps from SBA to OnDeck, and a worked example you can copy.

LoansPublished November 2026By Loanistry Research DeskHow we rateHow we make money9 min read
In short

Most lenders size a business loan by the payment your cash flow can carry, not by what you ask for. They divide spare cash flow by a coverage cushion, turn that payment into a loan amount using the rate and term, then cap it by revenue, collateral and the product's maximum. Longer terms and lower rates support bigger loans.

The amount a lender offers is rarely the amount you asked for. It is the answer to a narrower question: how big a payment can this business carry, for how long, with room left over if sales dip?

Most lenders do not publish their sizing formulas. But the inputs are the same everywhere, and once you know them you can estimate your own number before you apply. If you want lender-specific ranges for your situation, see what you qualify for on Loanistry.

You would not be alone in coming up short. In the Federal Reserve Banks' 2026 Report on Employer Firms, only 42% of firms that applied for financing received the full amount they sought. Another 36% got some of it, and 22% got none.

The short version: four limits, and the lowest one wins

Your loan amount is the smallest of four numbers. A lender works out each one and offers the lowest.

  1. Payment capacity. How large a payment your cash flow can cover after existing debts, with a safety cushion.
  2. Revenue or sales. Many online lenders and payment companies size offers from your deposits or card sales.
  3. Collateral. For secured loans, how much the asset or project is worth and how much of it you are putting in.
  4. The product's cap. Every loan program has a published maximum, and the largest amounts go only to the strongest files.

Cash flow is usually the limit that binds. The other three explain why two businesses with the same profit can get very different offers.

Limit 1: payment capacity, the formula most lenders use

Lenders start from the payment, then work backward to the loan. The tool is the debt service coverage ratio, or DSCR: the cash your business has available for debt payments divided by all of its debt payments, including the new loan.

A DSCR of 1.0 means every spare dollar goes to debt. Lenders want a cushion above that, and each sets its own minimum, so ask the lender which figure it uses and how it calculates cash flow. Our DSCR guide walks through the calculation in detail.

Here is the math in three steps.

  1. Find the cash available for debt. Start with net income, then add back interest, depreciation and amortization. Lenders often allow a few documented adjustments, such as a one-time expense.
  2. Divide by the lender's required DSCR, then subtract existing debt payments. What is left is the most you can add in new annual payments.
  3. Turn that payment into a loan amount. Use the rate and term the lender offers. The same payment supports a much bigger loan over 10 years at a bank rate than over 2 years at an online rate.

Worked example: one business, three very different answers

A distributor has $150,000 a year in cash available for debt payments and already pays $30,000 a year on an equipment note. Assume the lender wants a DSCR of 1.25. That figure is an illustration, not a published standard.

  • $150,000 ÷ 1.25 = $120,000 of total debt payments the lender will accept.
  • $120,000 minus the existing $30,000 = $90,000 a year, or $7,500 a month, of room for a new payment.

Now the same $7,500 monthly payment, run through three different loan structures:

Loan structure Rate assumed Term Loan amount that $7,500 a month supports
Long bank or SBA-style term loan 10% 10 years About $567,500
Shorter bank term loan 10% 5 years About $353,000
Online term loan 53.2% APR 24 months About $109,400

The figures use standard monthly amortization. The 10% rate is an assumption for illustration. The 53.2% figure is the average APR OnDeck reports for term loans originated in the half-year ending June 30, 2026, and 24 months is OnDeck's maximum term (OnDeck).

The lesson: term length and rate move your maximum more than anything you can change about your business this month. The same cash flow supports roughly five times more borrowing on a 10-year bank structure than on a 24-month online one.

A smaller example: a service business with $60,000 of cash available for debt and no existing loans has $4,000 a month of room at a 1.25 cushion. That supports about $302,700 over 10 years at 10%, about $188,300 over 5 years at 10%, or about $58,400 over 24 months at 53.2% APR.

Pro tip: Run this math before you apply, and ask for the loan amount your numbers support. An application for far more than your cash flow can carry is a fast way to a denial.

Limit 2: revenue and sales volume

Online lenders and payment companies lean on revenue because they can verify it quickly from bank or processing data. Their published minimums tell you where the floor is:

  • OnDeck term loans and lines of credit require $100,000 in annual revenue, one year in business and a 625 personal FICO score. Term loans run "from $5K - $400K," and OnDeck says only "select customers with strong credit profiles and sufficient verified monthly revenue" reach the top (OnDeck term loans; OnDeck line of credit).
  • Bluevine lines of credit require $10,000 in monthly revenue, 12 months in business, a 625+ personal FICO score and a corporation or LLC (Bluevine).
  • American Express Business Line of Credit requires at least $3,000 in recent average monthly revenue, one year in business and a 660 FICO score at application (American Express).
  • Square Loans are by invitation. Square says offers "are based on a variety of factors related to your business," including "payment processing volume, account history, and payment frequency," and that you cannot manually raise an offer (Square).

None of these lenders publishes a fixed multiple of revenue. Treat any "you can borrow X times your monthly sales" rule you read online as a guess. What you can control is the revenue the lender sees: steady deposits into one business account, with no long gaps or negative balances.

Limit 3: collateral and your own money in the deal

When a loan buys a specific asset, the lender sizes it against that asset and against how much you contribute. SBA's 504 program, which finances buildings and long-lived equipment, shows the structure clearly. A private lender takes a senior lien for up to 50% of the project cost, a Certified Development Company takes a junior lien for up to 40%, and the borrower contributes at least 10% equity (SBA terms and conditions).

So on a $1 million building purchase, plan on bringing at least $100,000 yourself. The loan cannot simply cover everything.

Collateral rules also shape smaller SBA loans. For 7(a) Small and SBA Express loans, SBA requires no collateral on loans of $50,000 or less. Between $50,001 and $500,000, lenders follow their own collateral policies, though a loan cannot be declined solely for inadequate collateral (same source).

Limit 4: the product's published maximum

Every program has a ceiling, and you will not get past it however strong your numbers are. Published maximums, checked November 2026:

Product Published maximum Source
SBA 7(a) $5 million SBA
SBA 7(a) Small $350,000 SBA
SBA Express $500,000 SBA
SBA 504 $5 million ($5.5 million for manufacturing and energy projects) SBA
SBA Microloan $50,000 (average about $13,000) SBA
OnDeck term loan $400,000 OnDeck
OnDeck line of credit $200,000 OnDeck
Bluevine line of credit $250,000 Bluevine
Bluevine term loan (through lending partners) $500,000 Bluevine
American Express Business Line of Credit $250,000 on qualification American Express

One note on the SBA 504 figure: the cap is on the CDC's debenture, $5 million for most projects and $5.5 million for manufacturing projects and energy projects (13 CFR 120.931). Because the debenture covers only up to 40% of the project, the total 504 project can be much larger.

Why you might get less than you asked for

The Fed's survey shows what usually stands in the way. Among applicants who were not fully approved, the most cited reasons were lender requirements that were too strict (46%), already having too much debt (37%) and a low credit score (30%). Insufficient collateral, weak sales and "lenders don't approve businesses like mine" were each cited by about 29% (2026 Report on Employer Firms, PDF).

"Too much debt" is the payment-capacity limit at work. Every existing payment, including an equipment note or a cash advance, comes straight out of the room available for a new loan.

Most applicants are asking for modest amounts. In the same report, 59% of applicants sought $100,000 or less, and 37% sought under $50,000.

How to estimate your number, step by step

  1. Pull your last full year of financials and recent bank statements. Lenders size from what they can verify, so use the same documents. Our business loan requirements guide lists what each lender type asks for.
  2. Calculate cash available for debt. Net income plus interest, depreciation and amortization, plus any clearly one-time costs you can document.
  3. List every existing debt payment. Term loans, lines, equipment notes, card minimums and any daily or weekly advance payments, converted to an annual figure.
  4. Apply a cushion. Divide cash available by a coverage ratio such as 1.25, then subtract existing payments. That is your annual room for a new payment.
  5. Convert the payment into a loan amount. Use our business loan calculator with the rate and term you expect, and solve for the amount that fits the payment.
  6. Check it against the floors and caps. Make sure you meet the lender's revenue, time-in-business and credit minimums, and that the amount is under the product's maximum.
  7. Compare real offers. Your estimate is a starting point. Check your range with Loanistry to see which lenders' minimums you meet before you apply.

How to qualify for a larger amount

  • Ask for a longer term. As the worked example shows, stretching the term is the single biggest lever on the amount a fixed payment supports. SBA 7(a) working capital loans can run up to 10 years (SBA).
  • Pay off or refinance small, expensive debts first. Removing a $1,000 monthly payment frees $12,000 a year of payment room.
  • Bring collateral or a down payment. For asset purchases, more equity means less risk for the lender.
  • Show clean, steady deposits. Run all revenue through one business account for several months before you apply.
  • Fix the personal credit file. OnDeck and Bluevine list 625 as a floor, and American Express lists 660. Scores above a lender's floor often reach better pricing, which itself raises the amount a payment supports.
  • Borrow in stages. A smaller first loan repaid on time builds a record with that lender. OnDeck, for example, offers renewal customers origination-fee discounts.

Alternatives when the number is too small

If the math says you can carry less than you need, a different structure may close the gap.

  • A line of credit lets you draw only what you need when you need it, so you are not paying for unused money. Compare the two in working capital loans vs lines of credit.
  • Equipment financing is secured by the item it buys, which can support an amount your unsecured cash flow alone could not.
  • SBA Microloans of up to $50,000 come from nonprofit intermediaries, and SBA does not review them for creditworthiness itself (SBA).
  • Splitting the need. Fund the long-lived asset with a long loan and the short-term gap with a short line, so each payment matches the life of what it pays for.

Be careful with products that size by sales and collect daily. A merchant cash advance is easy to get but can crowd out the payment room you need for a cheaper loan later.

Sources

See what you qualify for

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See what you qualify for

Loanistry is a Trulli company and a funding marketplace and broker, not a lender. Lenders make every approval decision.

Frequently asked questions

How much of a business loan can I get based on revenue?

There is no universal multiple. Online lenders set revenue floors, such as OnDeck's $100,000 a year or Bluevine's $10,000 a month, and size offers from verified deposits, but none of the lenders we checked publishes a fixed ratio. Your cash flow after expenses and existing debt usually sets the real limit.

What is the formula lenders use to decide a loan amount?

Most use payment capacity. They take the cash your business has available for debt, divide it by a required coverage ratio, subtract existing payments, and convert the remaining payment into a loan amount at the offered rate and term. Then they cap it by collateral, revenue rules and the product's maximum.

Can I get a $500,000 business loan?

Possibly, if your cash flow supports the payment and you choose a product that goes that high. SBA 7(a) loans go up to $5 million and SBA Express up to $500,000. Among online options, Bluevine's partner term loans reach $500,000 and OnDeck's term loans $400,000, reserved for the strongest applicants.

Why did the lender offer less than I applied for?

Usually because your cash flow supports a smaller payment once existing debts are counted, or because the lender's rules cap new customers lower. In the Fed's 2026 report, 37% of applicants who were not fully approved cited having too much debt already.

Does a longer loan term let me borrow more?

Yes. A longer term spreads the principal over more payments, so the same monthly payment supports a larger loan. In our example, $7,500 a month at 10% supports about $353,000 over 5 years and about $567,500 over 10 years.

How much can I borrow as a new business?

Less, in most cases. Many online lenders require at least a year in business, and the largest amounts go to established firms with long records. SBA Microloans, which top out at $50,000, are one route for younger businesses. You can also see what you qualify for on Loanistry.

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