Glossary · Partnership economics

Capital call

Also called Capital contribution, Drawdown, Unfunded commitment.

A capital call is a demand on partners to fund committed equity, at closing or in stages as the business plan needs it. Calling capital later rather than all at once raises the internal rate of return without changing the equity multiple, and failing to fund a call carries penalties written into the operating agreement.

Updated August 6, 2026 · All terms

How it works

Staged calls exist because idle capital earns nothing inside a deal. A renovation drawn over eighteen months does not need its funding on day one, so a structure that calls it as it is spent leaves the money with the investors until it is needed. The effect on returns is real and it is purely arithmetic: the same dollars contributed later are discounted less, so the IRR rises while the multiple, which has no opinion about time, does not move at all.

The mirror image is a call nobody planned for. A cost overrun, a covenant cure, an interest reserve that ran dry, a large tenant lost in a rollover year: each one produces a demand for money at exactly the moment the deal is not performing. Whether the agreement permits a call for those purposes, and how much notice partners get, is a term to read before signing rather than during.

The remedies for a partner who does not fund are severe, and that is why the clause matters. Dilution at a punitive rate, conversion of another partner's contribution into a priority loan accruing at a high rate, or loss of voting rights are all standard, and any of them can transfer most of a defaulting partner's economics. A limited partner should size its commitment against its own liquidity in a bad year rather than in the base case.

Formula

Unfunded commitment = total commitment - capital contributed to date
  • The equity multiple uses total contributions, so a staged schedule does not change it
  • IRR uses the date of each contribution, so a staged schedule raises it
  • A preferred return normally accrues from the date each contribution is funded, not from the commitment date

Worked example

The same money, called a year later

Illustrative. $20,565,000 of equity and $34,000,000 returned at the end of year five. In the second column $2,565,000 of that equity is called at the end of year one instead of at closing.

Total equity contributed, either way$20,565,000
Total distributions, either way$34,000,000
Equity multiple, either way1.65x
IRR with all equity funded at closing10.58%
IRR with $2,565,000 called a year later10.85%

Twenty-seven basis points from the funding schedule alone, with nothing about the property changed. It is a genuine benefit to the investor, and it is also a reason to read every IRR next to its multiple, because the multiple is identical in both columns.

Conventions worth knowing

  • Model contributions on the dates they are actually called. An IRR built on a single day-one outflow understates a staged structure.
  • Read the default remedy before committing. A dilution or priority-loan provision can transfer most of a partner's economics on one missed call.

The common mistake

Committing to capital that is only affordable in the base case

An unfunded commitment is an obligation, and the calls that hurt arrive in the year the plan is behind, frequently at the same moment as calls on other investments in the same market for the same reason. A limited partner sized to its base case discovers the problem when three sponsors call at once. Size a commitment against the downside case and against the rest of the portfolio, and ask the sponsor what the largest unplanned call in the structure could be and what triggers it.

Related terms

Every figure, traced to its source

Altyst computes these in exact decimal arithmetic, not with a language model, and clicking any number shows the formula behind it.