A capital call is a formal request from a fund’s General Partner to its Limited Partners to fund a portion of their committed capital. LPs typically commit capital up front but only fund portions over time as the fund makes investments — each funding event is a capital call.
Capital calls have specific notice requirements: typically 10 business days, with wire instructions and the specific amount each LP must contribute. Investor portals automate capital call workflows — generating notices, distributing them securely per LP, tracking payment status, and updating capital account balances. See LP Portals.