Middle Market Lending Companies: Who Lends and How
Who counts as a middle market company, what a middle market loan is, and which types of lenders fund them. Plain definitions, cited market figures, and FAQs.
Middle market lending companies are private lenders and credit funds that provide loans to mid-sized businesses, usually companies with tens of millions of dollars in annual earnings. They sit between small-business lenders and the large syndicated loan market. Most are private credit funds, business development companies (BDCs), or specialty lenders, and some banks also lend in this segment.
What counts as a middle market company?
There is no single legal definition. In practice, a typical core middle market company is established, mid-sized, and has a meaningful earnings base. According to Golub Capital's white paper, a typical core middle market firm is on average 31 years old, has between 50 and 500 employees, and has between $10 and $100 million in annual EBITDA. The same paper estimates that the category includes about 200,000 companies across the U.S.
Lenders often use EBITDA, revenue, or deal size to set their own boundaries, so the same company can be "middle market" to one lender and too large or too small for another.
What is a middle market loan?
A middle market loan is a loan made to a middle market company, usually for an acquisition, a refinancing, a growth project, or a sponsor-backed buyout. Common types include senior secured debt, asset-based lending (ABL), mezzanine debt, and unitranche loans, which combine senior and junior debt in one facility.
Loan size varies widely. Some lenders focus on smaller deals, while others write larger checks. Pricing, term length, covenants, and collateral depend on the lender, the borrower's earnings, and the purpose of the loan.
Who lends to middle market companies?
The main lenders are private credit funds, BDCs, and banks. The scale of private lending has grown fast. According to the Federal Reserve, private credit totaled $1.34 trillion in the U.S. and nearly $2 trillion globally by 2024-Q2, growing roughly five times since 2009. Golub Capital's white paper puts direct lending at more than $950 billion in assets across private drawdown funds and BDCs.
KKR's research describes a crowded lower part of the market: according to KKR, lenders focused on companies with less than $50 million in EBITDA make up 90% of the direct lending market.
| Lender type | Typical role | What to check |
|---|---|---|
| Private credit fund | Direct loans, often senior or unitranche | Target deal size, sectors, and states |
| BDC | Public or private vehicle making middle market loans | Investment criteria and reporting |
| Bank | Senior, asset-based, or bank-led facilities | Credit box, collateral needs, and timing |
| Specialty lender | ABL, mezzanine, or acquisition finance | Loan type and industry focus |
Why do the top-ranked lists disagree?
Most published "top lender" lists rank firms by assets under management, a measure that includes leverage and mixes fund types. For example, Golub Capital reports over $80 billion in capital under management as of July 1, 2025, a gross measure that includes leverage. Size tells you about scale, not whether a lender will fund your deal. Fit depends on deal size, earnings, industry, geography, and loan type.
How do you find a lender that fits?
Start with your own numbers: EBITDA, revenue, deal size, purpose, and collateral. Then match them against each lender's stated criteria. Ask for indicative terms before committing to a term sheet, and compare structure, fees, and closing timelines, not only headline pricing.
Thrive Funding is one option for borrowers in this range. Thrive Funding arranges private credit for middle market companies and is not a lender; the lending group makes every credit decision. Thrive accepts applications from $1 million, though its site leads with deals of $5 million and up. Each application is matched to lending groups whose criteria fit its size and loan type, and up to three interested groups are introduced, best fit first. Every borrower email states that Thrive is paid by its lending partners. Start at Thrive Funding's application page.
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Frequently asked questions
What is considered middle market lending?
Middle market lending is lending to mid-sized companies, often with tens of millions of dollars in annual EBITDA, by private credit funds, BDCs, and some banks. The exact boundaries depend on each lender's criteria. Golub Capital's white paper describes a typical core middle market firm with $10 to $100 million in annual EBITDA.
What is a middle market loan?
A middle market loan is a loan to a mid-sized company, often for an acquisition, refinancing, or growth. Common forms are senior secured debt, asset-based loans, mezzanine debt, and unitranche facilities.
What are examples of middle market companies?
Examples include mature, mid-sized businesses with several hundred employees and steady earnings, such as manufacturers, distributors, and service firms owned by private equity sponsors or founders. The category covers many industries, and the defining features are size and earnings rather than sector.
What is middle market financing?
Middle market financing is the debt a mid-sized company uses to fund acquisitions, refinancings, or growth, typically from private lenders rather than public markets. Borrowers usually compare several lenders' indicative terms before choosing one.
Chris Irving
Co-Founder @ Thrive
Arranges middle market financing with private credit funds, asset-based lenders and other lending partners.
