The Term Loan B (TLB) market is the institutional core of leveraged finance — a market that has grown from relative obscurity in the 1990s to several trillion dollars in outstanding volume, serving as the primary financing vehicle for large private equity transactions and corporate acquisitions. Understanding TLB mechanics is essential for anyone working in leveraged finance, private credit, or CLO management.
TLBs are characterized by three defining features: (1) minimal amortization — typically 1% per annum, with the remaining 99% as a bullet payment at maturity; (2) floating-rate pricing — SOFR + a credit spread, protecting investors against duration risk while making borrowers sensitive to rate movements; and (3) covenant-lite documentation — maintenance financial covenants are typically absent, with only incurrence-based restrictions governing borrower flexibility.
The minimal amortization in TLBs reflects institutional investor preferences: CLOs and loan mutual funds want loans that remain outstanding for their full term rather than amortizing rapidly, providing stable assets for their portfolios. From the borrower's perspective, minimal mandatory amortization preserves cash flow for reinvestment in the business rather than mandatory debt repayment, though borrowers retain the right to prepay at par (with soft-call protection of 101 in the first year for repriced loans).
Pricing mechanics for TLBs include both the spread (fixed component of yield above SOFR) and OID (original issue discount). The SOFR component may include a floor — most commonly 0.50% or 1.00% — ensuring a minimum rate regardless of where spot SOFR trades. The combination of spread, floor, and OID determines the all-in yield, which is the metric investors and analysts use to compare TLBs across deals.
The TLB investor base is dominated by CLOs — which typically represent 65–75% of any large institutional loan syndication — supplemented by loan mutual funds (prime funds), separately managed accounts, and hedge funds. The concentration of CLO demand in the leveraged loan market creates a feedback loop: CLO formation drives new loan capacity, and CLO managers' reinvestment needs drive secondary demand. When CLO formation slows (as in early 2020 or during the 2022 rate shock), new loan supply also slows as banks can no longer clear underwritings.