Introduction
If your bank said no — or couldn't move fast enough — you're not alone. Since the 2008 financial crisis, banks have pulled back significantly from middle-market lending, construction projects, and complex financing structures. Private debt funds stepped in to fill that gap, and the market has grown to match the demand: according to McKinsey's 2024 Global Private Markets Review, global private debt AUM reached $1.7 trillion in 2023, up 27% year over year.
This guide covers what business owners and investors need to know about private debt — and how to decide whether it's the right capital strategy for your situation:
- What private debt funds are and how they operate
- The main fund types and structures available to borrowers
- How the process works from first contact to funding
- How to access this capital efficiently
Key Takeaways
- Debt funds are pooled vehicles that lend directly to businesses, filling gaps left by bank retrenchment
- Private debt spans several strategies — direct lending, mezzanine, bridge, and distressed — each with different risk and pricing profiles
- For borrowers, speed and structural flexibility are the primary advantages over conventional banks
- Middle-market direct lending priced around SOFR + 5.50%–6.25% in Q1 2024, putting all-in yields near 11%
- A capital advisory firm opens simultaneous access to multiple private lenders — no solo market navigation required
What Is a Debt Fund?
A private debt fund — also called a private credit fund — is a pooled investment vehicle that raises capital from institutional and accredited investors, then deploys that capital by lending directly to borrowers. The defining characteristic is what it bypasses: traditional banks and public debt markets.
Unlike publicly traded bonds, private debt loans are individually negotiated and never traded on exchanges. For borrowers, that means loan terms can be structured around their specific situation rather than forced into a standardized product.
Why Private Debt Emerged
The 2008 Global Financial Crisis created a structural shift. Tightening bank regulations raised capital requirements and increased risk sensitivity, causing banks to retreat from segments of the market they had previously served — particularly middle-market companies, construction lending, and higher-leverage transactions. Private lenders stepped in, building direct lending programs specifically for those underserved borrower profiles.
The Bank for International Settlements (BIS) traces private credit loan volume from roughly $100 billion outstanding in 2010 to over $1.2 trillion by 2025. At that scale, private credit has become a core segment of the commercial capital markets, not a peripheral alternative.
Who Lends and Who Borrows
Lenders include institutional fund managers, private equity firms, Business Development Companies (BDCs), and specialty finance firms. BDCs alone hold over $300 billion in AUM and represent approximately 20% of the U.S. private credit market.
Borrowers include:
- Middle-market companies that don't fit standard bank criteria
- Commercial real estate developers, particularly for construction and transitional assets
- Businesses pursuing acquisitions or expansions
- Companies with strong collateral but inconsistent cash flow
Types of Private Debt Funds
Private debt funds vary by strategy and by where they sit in the capital structure. Understanding these differences helps borrowers identify which type is most relevant for their situation.
Senior Debt / Direct Lending Funds
Direct lending is the dominant private debt strategy — Preqin reported $93 billion of direct-lending fundraising through Q3 2024 alone. These funds provide senior secured loans backed by collateral (real estate, business assets, receivables) that sit at the top of the capital structure and are repaid first in the event of default.
Because senior lenders have first claim on assets, these loans carry lower risk for the lender, which generally translates to more competitive pricing compared to subordinated structures.
Mezzanine Debt Funds
Mezzanine debt sits between senior debt and equity in the capital structure. It carries more risk than senior debt (it gets repaid after senior lenders in a default scenario), which commands higher rates. According to CAIA, mezzanine coupons typically run 10% to 14%, with additional upside from equity "kickers" — warrants or conversion rights that give the lender a share of value appreciation.
Key use cases and structural features include:
- Common in larger commercial real estate transactions and leveraged buyouts where senior debt alone doesn't cover the full capital stack
- Can extend leverage up to 85% LTV for qualifying multifamily projects alongside a senior loan
- Equity kickers (warrants or conversion rights) give lenders participation in upside beyond the coupon
Bridge and Construction Lending Funds
Banks routinely pass on transitional assets — construction loans, value-add repositioning, lease-up plays, and properties mid-renovation. Bridge and construction lending funds exist specifically to fill that gap with short-term capital structured around execution timelines.
Bridge and construction debt through private funds generally features:
- Shorter loan terms (terms vary by deal; consult specific lenders for current benchmarks)
- Higher pricing than stabilized permanent financing, reflecting execution risk
- Draw structures for construction projects, disbursed as work is completed
- LTV and LTC ratios that vary based on property type, sponsor experience, and market
Distressed and Special Situations Funds
These funds invest in financially troubled borrowers or companies undergoing restructuring, spin-offs, or other complex events, sometimes acquiring debt at a discount to par.
Distressed debt is most relevant for companies navigating covenant breaches, bank exits, or active turnaround scenarios. These funds evaluate the forward-looking opportunity rather than the historical financial record — a meaningful distinction when conventional lenders have stepped back.
How Debt Fund Financing Works
The basic flow: a fund raises capital from investors → identifies borrowers → underwrites the deal → structures and closes the loan → collects interest payments that generate returns for investors. The mechanics matter because each stage shapes what borrowers experience — and what lenders require.
Deal Sourcing and Initial Screening
Private debt funds source deals primarily through intermediary networks — commercial finance advisors, investment banks, private equity sponsors, and referral relationships. Direct borrower outreach also occurs, but intermediaries often dominate deal flow because they pre-screen opportunities before they reach the lender's desk.
An initial screen evaluates whether the deal matches the fund's strategy, deal size appetite, collateral preferences, and risk tolerance. A construction fund won't evaluate a corporate direct lending deal; a distressed fund won't underwrite a performing senior loan. For borrowers, this means reaching the right lender matters as much as having the right deal.
Underwriting and Due Diligence
From the borrower's perspective, expect scrutiny across several dimensions:
- Cash flow stability — revenue trends, EBITDA consistency, debt service capacity
- Collateral value — quality, liquidity, and enforceability of the collateral offered
- Leverage ratios — how much debt the business or asset can reasonably support
- Creditworthiness — borrower history, management track record, industry position
- Deal structure — use of proceeds, exit strategy, repayment sources
Private debt funds can move faster than banks on deal timelines, but they often conduct thorough due diligence — including personal guarantees and collateral requirements — particularly for borrowers with complex profiles. That due diligence directly shapes how the loan gets structured.
Loan Structuring and Terms
Key deal terms a borrower will negotiate:
| Term | Description |
|---|---|
| Interest rate | Fixed or floating; floating rates typically peg to SOFR. Q1 2024 unitranche spreads averaged SOFR + 5.50% to 6.25%, implying ~11% all-in |
| LTV / LTC | Loan-to-value or loan-to-cost ratios; vary by asset type, sponsor, and deal structure |
| Loan term | Varies by strategy; bridge loans are typically shorter, direct lending facilities longer |
| Origination fees | Charged at closing; deal-specific |
| Extension fees | Charged if the loan term is extended beyond original maturity |
| Financial covenants | Minimum DSCR, leverage caps, reporting requirements; negotiated deal by deal |
Funding, Monitoring, and Repayment
Post-close, funds are disbursed, sometimes in milestone-based draws for construction loans. Throughout the term, lenders actively monitor covenant compliance, financial performance, and interest payments. Private debt capital comes with ongoing lender engagement — not a one-time transaction.
Understanding your exit before you enter is critical. Lenders will ask, and borrowers should have a clear answer. Repayment typically comes through one of three paths:
- Property sale or asset disposition
- Refinancing into permanent or lower-cost debt
- Operational cash flow over the loan term
Benefits and Risks of Debt Fund Financing
Benefits for Borrowers
The case for private debt is straightforward for the right situations:
- Speed — Private lenders can close transactions on timelines banks cannot match; competitive acquisitions and time-sensitive deals often can't wait for a bank's credit committee
- Flexible underwriting — Collateral strength, enterprise value, and deal logic can outweigh inconsistent cash flow metrics
- Deal types banks won't touch — Construction, bridge, transitional assets, and value-add deals have a natural home in private debt
- Customized structures — Terms are negotiated, not standardized; the deal can be shaped to fit the actual situation
- No equity dilution — Unlike venture or equity financing, debt preserves ownership and control
Risks and Considerations for Borrowers
Private debt trades cost for flexibility and speed — and borrowers need to understand what that trade-off actually looks like:
- Higher rates — Middle-market direct lending averaged around 11% all-in in early 2024, according to Proskauer's Private Credit Default Index — the price of flexibility and speed over bank pricing
- Repayment obligations are fixed — Unlike equity, debt must be serviced regardless of business performance
- Personal guarantees — Common in private debt, especially for smaller transactions
- Interest coverage — The Federal Reserve's 2024 Financial Stability Report noted that average interest coverage at issuance has been below 2x for private credit borrowers — a meaningful stress signal
Borrowers should evaluate total cost of capital, not just the stated rate. Origination fees, extension fees, and prepayment penalties all affect what the financing actually costs — model full debt service against realistic cash flow projections before committing.
Debt Fund Financing vs. Traditional Bank Loans
| Factor | Private Debt Fund | Traditional Bank |
|---|---|---|
| Speed of execution | Faster; fewer committee layers | Slower; extensive approval process |
| Underwriting flexibility | Collateral and deal-logic driven | Cash flow and credit score driven |
| Construction / bridge loans | Core product offering | Rarely available |
| Typical rates | Higher; ~11% all-in for mid-market direct lending (Q1 2024) | Lower for qualifying borrowers |
| When borrower doesn't qualify | May still lend on collateral merits | Typically declines |
| Covenant flexibility | Negotiated deal by deal | More standardized |
Banks pull back from certain loan types because regulatory capital requirements make those loans structurally expensive or prohibited. Construction, transitional, and bridge lending carries risk profiles that bank regulators treat conservatively. Private debt funds operate under different rules, which is why they can serve these needs structurally, not just as a fallback.
That regulatory gap doesn't make private debt a replacement for banking. Many sophisticated borrowers use both, matching the financing type to the deal. A stabilized income-producing property might refinance conventionally; the construction phase that preceded stabilization might be funded through a private credit fund.
How to Access Private Debt Fund Financing
Getting to the right lender starts with knowing which path fits your deal. Borrowers have three main options:
- Direct outreach to private debt funds — works best when you already know which funds are active in your asset class and deal size
- Investment banks or placement agents — appropriate for larger, institutional-scale transactions
- Commercial finance intermediaries — maintain relationships across multiple lenders and can match borrowers to the right capital source efficiently
What to Prepare Before Approaching a Lender
A well-organized file moves faster. At minimum, prepare:
- Clear description of the financing need and use of proceeds
- Business or project financials (2-3 years of historical data, plus projections)
- Collateral details — what you're pledging, current value, any existing liens
- Desired loan structure — amount, term, rate expectations
- Exit strategy — how the loan gets repaid
The more organized and complete the submission, the faster the process moves. Lenders price partial information with additional caution.
Working with a Commercial Finance Advisor
For borrowers unfamiliar with the private debt landscape, or those who need to evaluate multiple lenders without approaching each one independently, a commercial finance advisory firm like Stirling Capital Group can cut weeks off the search process.
Stirling Capital Group maintains relationships with over 60 private lending sources — including private credit funds, non-bank lenders, bridge lenders, construction lenders, and specialty finance providers — and is authorized to pre-qualify, pre-underwrite, and originate loans on behalf of those lenders.
That authorization matters. Rather than submitting a file cold and waiting for a lender's internal review to begin, SCG performs substantive front-end underwriting that lenders recognize and rely upon. The result is faster decisions and better lender alignment from the first submission.
SCG's scope covers:
- Geography: Continental United States, major Canadian cities, and Puerto Rico
- Deal size: $500,000 to $500 million and above
- Loan types: Bridge loans, construction financing, mezzanine structures, middle-market direct lending, and equity co-investment alongside debt
For borrowers navigating a complex or time-sensitive transaction, that breadth of coverage — combined with pre-authorized underwriting — translates directly into speed and certainty of execution.
Frequently Asked Questions
Is debt financing a good idea?
Debt financing works well for businesses with predictable cash flow or tangible collateral because it provides capital without diluting ownership. Assess repayment capacity honestly and factor in total cost of capital — not just the stated rate, but origination fees and other charges.
How does a debt fund make money?
Debt funds earn returns primarily through interest payments on their loan portfolios. Additional income comes from origination fees, extension fees, prepayment fees, and exit fees charged to borrowers throughout the loan.
What is the difference between debt fund financing and a traditional bank loan?
Debt funds move faster, underwrite more complex deals, and fund loan types — construction, bridge, transitional assets — that banks typically won't touch. In exchange, they charge higher rates to compensate for that flexibility and the risk profile of the borrowers they serve.
What types of businesses qualify for private debt fund financing?
Qualifying borrowers typically include middle-market companies, commercial real estate investors and developers, acquisition-focused businesses, and companies that don't meet bank lending criteria. Eligibility turns on cash flow capacity, collateral quality, and deal structure — not just credit scores.
What is the difference between senior debt and mezzanine debt?
Senior debt sits at the top of the capital structure and is repaid first in a default: lower risk, lower cost. Mezzanine debt sits below senior in the capital stack, carries higher risk, and commands higher rates — typically 10% to 14% — sometimes with equity conversion rights attached.
What are typical interest rates and loan terms for private debt fund financing?
Middle-market direct lending priced at roughly SOFR + 5.50% to 6.25% in Q1 2024, implying approximately 11% all-in yields with SOFR near 5.3%. Mezzanine debt typically runs 10% to 14%. Bridge and construction rates vary by property type, sponsor experience, LTV, and lender criteria.
