Middle Market Lending Companies: A 2026 Guide

Middle market lending companies are non-bank lenders, mostly private credit funds, that make loans to mid-sized businesses. Those businesses are too large for most small-business loans and too small for the public bond markets. The loans are usually senior secured debt, often from one lender or a small group.

The category is large. According to Growth Cap Advisory, private credit now exceeds $2 trillion in size. Within it, direct lending to middle market companies is the biggest part. Golub Capital puts direct lending at more than $950 billion in assets across private drawdown funds and BDCs.

What counts as a middle market company?

There is no single legal definition. Lenders usually use earnings (EBITDA) or revenue to draw the line. Golub Capital describes a typical core middle market firm as fairly mature, with 50 to 500 employees and between $10 million and $100 million in annual EBITDA. Its white paper says the U.S. category includes approximately 200,000 companies. Lord Abbett notes that smaller companies, generally those with less than $100 million in annual earnings, have historically borrowed from banks.

The exact cutoff differs by lender. Some funds focus on the lower middle market, and others on the upper end. Check each lender's stated EBITDA, revenue and deal-size minimums before you assume you fit.

Types of middle market lenders

Middle market lenders differ in how they fund, how big a deal they will do, and what they lend against. The table below compares the common types.

Lender type	Typical role	Common loan types	What to check
Direct lending funds	Lend directly to the borrower, often one-stop	Unitranche, senior secured term loans	Deal size, leverage, sponsor involvement
Business development companies (BDCs)	Public or private vehicles that lend to middle market firms	Senior secured, mezzanine	Industry focus, target EBITDA
Asset-based lenders	Lend against receivables, inventory or equipment	Revolvers, term loans against collateral	Collateral types, borrowing base rules
Mezzanine funds	Subordinated debt, often with equity features	Mezzanine, second-lien	Pricing, subordination terms
Specialty and acquisition lenders	Fund buyouts, recapitalizations or growth	Acquisition financing, bridge loans	Sponsor relationships, close timelines

Lenders in each group set their own criteria, so the list above describes roles, not rankings.

What is a middle market loan?

A middle market loan is debt provided to a mid-sized company, usually from a private lender rather than a bank or public market. Most are senior secured, meaning the lender has first claim on the company's assets. Loan terms are often set for several years, with interest that floats or is fixed.

Because these loans are privately negotiated, terms vary widely. Lord Abbett describes direct lending as a strategy that makes direct, illiquid loans to middle market companies outside the traditional banking system. Illiquid means the loan cannot easily be sold before maturity, so lenders price in that risk.

How do you find the right middle market lender?

Start with your deal size, your earnings, your industry and the type of loan you need. A lender that does a $10 million deal may not look at a $100 million request, and the reverse is also true. Then compare lenders on four points:

• Deal size and earnings minimums
• Industries and states they will lend in
• Loan types offered, such as senior, unitranche, ABL or mezzanine
• Speed to close and the documents they require

Gather financial statements, a summary of your debt and a short description of the use of funds before you talk to lenders. Clean numbers make it easier to get a fast answer.

How Thrive Funding fits in

Thrive Funding arranges private credit for middle market companies. It is not a lender. The lender makes every credit decision. Borrowers apply once, and Thrive matches the request against lending groups whose criteria fit its size, industry, state and loan type.

The process runs in five steps. First, the borrower applies. Second, Thrive compares the request with each group's criteria. Third, matching groups get an anonymous deal summary and reply yes or no. Fourth, once the borrower agrees, up to three groups that said yes receive introductions, each in its own email thread. Fifth, lenders issue term sheets on their own letterhead, and the borrower chooses one. Requests under $1 million receive an automatic decline. Thrive is paid by its lending partners, and every borrower email says so.

The site leads with requests of $5 million and up. The application form accepts $1 million and up, and requests are routed to the groups whose criteria fit. Any estimate Thrive sends is called indicative terms. It is not a term sheet and not an offer.

Ways to compare lenders

Use a simple checklist. Ask each lender for its minimum and maximum deal size, its EBITDA or revenue floor, its typical hold and its process from first call to funding. Ask whether it lends in your industry and state. Ask for a sample term sheet so you can compare pricing and covenants on the same basis.

Be careful with lists that rank lenders by size or assets alone. A large fund may not lend to a small company, and a small fund may be a better fit for a specific deal.

Sources

• Private Credit Firms of 2025
• An Income Alternative: Exploring Middle Market Direct Lending
• Private Credit: Middle Market Direct Lending