TLDR:
A capital call is the mechanism by which a fund’s GP draws down committed but uncalled capital from Limited Partners (LPs) to fund investments, fees, and expenses. Unlike traditional securities investments where investors pay upfront, fund LPs commit a total amount and contribute portions over time as the GP makes investments—typically 3-7 years during the fund’s investment period.
Capital Call Mechanics
The LPA specifies call mechanics: notice period (typically 10-15 business days), notice content (amount, purpose, deadlines), and pro-rata calculation (calls drawn pro-rata from all LPs based on commitment percentage). Calls fund: investments (the primary use), management fees (calculated periodically based on commitments or invested capital), partnership expenses (legal, audit, professional fees), and reserves for follow-on investments. LPs receive a notice and must wire funds by the deadline (typically through bank wire transfer).
Default Consequences
LP failure to fund a capital call is one of the most serious LP-side failures, with severe consequences in the LPA: interest accrual on unpaid amounts (often at LIBOR/SOFR + significant spread), forfeiture of a portion of the LP’s interest (e.g., 25-50% of committed capital), forced sale of LP interest at discount to other LPs or third parties, and loss of voting rights. The consequences are intentionally severe because GP’s ability to fund investments depends entirely on LPs honoring commitments. Major institutional LPs (pension funds, endowments) rarely default; smaller LPs or those facing liquidity crises occasionally do.
Subscription Credit Lines
Modern funds widely use subscription credit lines (also called capital call lines): bank credit facilities secured by LPs’ uncalled commitments. These allow the GP to fund investments immediately without waiting for the 2-week capital call cycle, then call capital later (often quarterly) to repay the line. Subscription lines have grown enormously (from rare in 2000 to standard practice by 2020) but have generated controversy—they smooth out cash flows but also inflate reported IRRs (returns measured from later capital calls rather than initial commitment dates). ILPA and major LPs have published guidance limiting subscription line use to genuine bridging rather than IRR engineering.