Before a private-equity professional ever debates valuation multiples, she first asks: “How big is this business?” Enterprise value—abbreviated EV and equal to equity value plus net debt—sets the stage for everything that follows: leverage capacity, equity cheque, syndication need, and even the likely exit route. To help you place any opportunity on a clear size spectrum, practitioners use seven deal-size tiers. Each tier below is defined by enterprise value, with approximate earnings thresholds in parenthesis because different industries carry different multiples.
Nanocap or Venture-Scale Add-On — EV under US $10 million (EBITDA below US $1 million)
Think of a software start-up selling for four million dollars or a local HVAC contractor tucked into a regional roll-up. Institutional buy-out funds rarely write cheques this small, but search-fund entrepreneurs, independent sponsors, and venture funds adding “bolt-ons” traffic here. Transaction costs loom large against purchase price, so GPs use highly templated legal documents or revenue-based financing to keep frictional drag down.
Micro-Cap — EV under US $25 million (EBITDA below roughly US $3 million)
Micro-cap deals often involve founder-owned businesses in niche services, consumer brands, or sub-scale manufacturing. Early-stage institutional capital first appears, typically from regionally focused funds such as Gauge Capital at launch or Trinity Hunt’s earliest vintages. Debt comes from cash-flow lenders or the Small Business Administration’s SBIC program; add-back negotiations over owner compensation can be lively.
Lower-Middle Market — EV US $25 million to US $100 million (EBITDA US $3 million – US $10 million)
This is the “first institutional buy-out” zone. A GP can buy a platform at forty million dollars, bolt on five micro-cap targets, professionalize management, and double earnings within four years. Lenders provide unitranche financing up to four times EBITDA. Incline Equity Partners and Rotunda Capital live here, offering sellers both cash and operational support.
Core Middle Market — EV US $100 million to US $500 million (EBITDA US $10 million – US $40 million)
The core middle market is bread and butter for many sector specialists and even generalist funds. Debt packages often include first-lien term loans, revolving credit, and junior “PIK toggle” notes. Genstar Capital and Arsenal Capital Partners execute numerous deals of this magnitude, balancing control with manageable complexity.
Upper-Middle Market — EV US $500 million to US $1.5 billion (EBITDA US $40 million – US $100 million)
Upper-middle-market targets require larger equity cheques—two-hundred-million dollars or more—and thus syndicated debt and sometimes co-sponsors. Cross-border diligence becomes common; legal spending can exceed seven figures. HGGC and CVC Growth often play in this bracket, partnering with management teams poised for international expansion.
Large-Cap — EV US $1.5 billion to US $5 billion (EBITDA US $100 million – US $300 million)
Large-cap deals capture public-to-private transactions and divisional carve-outs of multinational corporations. Equity tickets reach five-hundred-million dollars to a billion, so clubs of mega-funds or sovereign-wealth funds cooperate. Leverage structures include high-yield bonds layered on top of term loans. Clayton, Dubilier & Rice’s take-private of HD Supply fits neatly in this tier.
Mega-Cap — EV above US $5 billion (EBITDA over US $300 million)
Only a handful of global buy-out firms—Blackstone, KKR, Apollo, Advent International—and state investment arms regularly tackle this stratum. The universe of targets is tiny: large public corporations or trophy infrastructure. Deals often feature multi-currency financing, complex regulatory approvals, and media scrutiny. Execution risk is high, but so is visibility for firms seeking brand prestige.
