Capital Call

A capital call is a formal request by a private fund manager (general partner) to investors (limited partners) to remit a specified portion of their committed capital, typically to fund investments, pay management fees, or cover operational expenses. In the family-office context, capital calls are most commonly associated with private equity, venture capital, infrastructure funds, and other closed-end structures where families commit to invest a total amount over a fund's lifecycle but do not transfer the full sum at inception. The call notice typically provides 10 to 30 days' advance notice and specifies the amount due, the purpose, and the payment deadline, with default provisions applying if the family office fails to meet its obligation.

Family offices must maintain sufficient liquidity to honour capital calls across their private-fund portfolio, which often spans multiple vintage years and asset classes. This liquidity-management challenge becomes particularly acute during market downturns when public holdings may decline in value while private-fund managers accelerate deployment schedules to capitalise on attractive valuations. Many single-family offices establish dedicated liquidity reserves or credit facilities to ensure they can meet unfunded commitments without forced liquidations of other holdings. Multi-family offices frequently model capital-call pacing using Monte Carlo simulations that incorporate historical drawdown patterns, fund-type variables, and macroeconomic scenarios to optimise the balance between return drag from excess cash and default risk from insufficient reserves.

From a regulatory and accounting perspective, unfunded capital commitments represent contingent liabilities that must be disclosed in financial statements under IFRS and US GAAP, though treatment varies by jurisdiction. Tax planning around capital calls also requires attention, particularly for non-US family offices investing in US funds subject to FATCA withholding or effectively connected income rules. Some sophisticated families negotiate side-letter provisions allowing for delayed funding, callable credit lines in lieu of cash, or secondary-market sales of positions to manage unexpected liquidity constraints, though such arrangements typically require minimum commitment thresholds and strong relationships with fund managers.