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How do capital calls work?

A capital call is how a fund turns the money its LPs have promised into cash it can actually invest. The fund draws down committed capital in tranches, as it needs it, rather than holding everyone's money up front.

Committed capital, called over time

When an LP commits to a fund, they are not writing a check on day one. They are agreeing to provide a set amount, their commitment, over the life of the fund. The fund holds that as a promise and draws it down in pieces, called capital calls or drawdowns, as it finds deals to make and bills to pay.

This is why a fund can announce a large size at its close and still have very little cash in the bank the next morning. The money stays with the LPs until the fund needs it. There are two reasons funds work this way. LPs would rather keep their capital working elsewhere until it is genuinely needed, and funds would rather not sit on idle cash that drags on returns. Calling capital just in time keeps both sides honest about timing.

What happens in a capital call, step by step

A worked example: a 10% call on a $100M fund

The mechanics are easier to see with real numbers. Suppose a fund has $100M in total commitments and the GP issues a capital call for 10%. Every LP receives a notice asking for 10% of whatever they committed, which keeps everyone exactly pro rata. An investor who committed $500K wires $50K. An investor who committed $2M wires $200K. When all of the wires land, the fund's account holds $10M in fresh capital, and every LP still has 90% of their commitment uncalled, waiting for future calls.

Now follow the money out the other side. If the fund has agreed to fund a startup's entire $8M round, it wires $8M of the freshly called capital to the startup, and once the wire lands the startup's account shows the full $8M, all of it coming from our fund.

That leaves $2M of the call still sitting in the fund's account, and it is there on purpose. It covers the management fee and fund expenses that were included in the call, and it gives the GP a head start on the next investment in the pipeline, so there is no need to go back to LPs every time a smaller need comes up. In practice a GP sizes each call to cover a season of activity, a deal or two plus fees, rather than calling capital one wire at a time.

What a capital call notice includes

A clean capital call notice leaves no room for guessing. It usually states the total amount being called across the fund, each LP's individual share based on their commitment, the due date, the wiring instructions, and a short description of what the capital is for. Many funds also show the LP their remaining unfunded commitment after this call, so everyone can see how much of the promise is left.

The detail matters more than it might seem. LPs are often individuals or institutions wiring from accounts with their own approval chains, so a notice that is vague about timing or amounts can create a week of back-and-forth email. Part of running a tight back office is making the notice unambiguous the first time it goes out.

How much notice LPs expect

There is no single legal number. The notice period is set in the fund's LPA limited partnership agreement, but most venture funds give somewhere around ten business days. Emerging managers sometimes give a little more on the first call or two, while LPs learn the fund's rhythm. The goal is a window long enough for an LP's own process, and short enough that the fund is not waiting on cash it needs to close a deal.

When an LP is late or defaults

Most late payments are harmless. A wire missed a cutoff, or an approver was traveling, and a quick reminder clears it up. A true default, where an LP will not fund at all, is rare but serious, and the limited partnership agreement spells out the remedies, which can range from interest on the overdue amount to forced sale or forfeiture of part of the LP's interest. The practical job of the back office is to catch a slow wire early, so a reminder never has to turn into a remedy. There can be financial penalties or even forfeiture of holdings in certain circumstances.

Capital calls in practice

At Graph Advisors we treat capital calls as a repeatable process rather than a fire drill. Each call is a notice that ties cleanly back to the limited partnership agreement, a pro rata calculation that matches the capital accounts, wiring instructions that do not change at the last minute, and a tracker that shows who has funded and who has not. Eric Friedman and Nate Snow have run this cadence inside funds before, and the lesson has been consistent: the calls that go smoothly are the ones where the math, the timing, and the communication were settled long before the notice went out.

A capital call does not live on its own. It connects to the fund's net asset value, to the distribution waterfall when money comes back, and to the management fee that often gets called alongside investments. Whoever processes the call is usually the fund administrator, while a fractional CFO decides the timing and owns the LP relationship. Capital calls also shape the performance picture LPs track, since called and returned capital sit underneath the metrics they watch.

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