Subscription Line of Credit

Definition

A subscription line of credit is a credit facility a fund borrows against — typically from a bank — secured by the uncalled capital call commitments its limited partners have made. It lets the GP draw cash immediately to fund an investment, and only issue the actual capital call to LPs later, usually to repay the facility within a defined repayment window set in the facility agreement (tenors vary widely by lender, from a few months up to about a year).

This is most common in closed-end, drawdown-style vehicles where LPs commit capital up front but fund it in tranches over the life of the fund, rather than in fully-funded, open-end structures where investor capital is already in the fund from the point of subscription. A fund that is fully funded at subscription generally has no need for a subscription line, since there is no gap between commitment and available cash to bridge.

The facility is secured against the LPs' unfunded commitments themselves — the lender's recourse in a default is to call capital directly from the LPs, under rights the LPA typically grants for exactly this purpose — rather than against the fund's existing portfolio.

Why it matters

A subscription line gives a GP operational flexibility: it can move quickly on a time-sensitive opportunity without waiting out the notice period a formal capital call typically requires, and it can batch multiple small draws into fewer, larger capital calls, reducing administrative burden on both the GP and its LPs.

The facility is also a well-known point of scrutiny in institutional diligence, because it changes the *timing* of when LP capital is actually outstanding without changing the total dollars invested or returned — and that timing shift affects IRR specifically, even though it leaves the fund's money multiple unchanged. Allocators reviewing a fund's DDQ responses commonly ask directly how much subscription-line usage sits behind a stated IRR.

Same profit, same multiple, different IRR

Take a fund that draws $5,000,000 on day 0, invests it, and exits for $5,500,000 on day 180 — a $500,000 profit and a 1.10x money multiple either way. Without a subscription line, the LP's own $5,000,000 is wired on day 0 and is outstanding for the full 180 days. With a subscription line, the GP draws on the facility on day 0 and only calls the LP's $5,000,000 on day 90 to repay it — so the LP's capital is outstanding for just 90 days, for the identical $500,000 profit.

Annualizing each scenario's return over its own capital-outstanding period gives roughly 21.3% for the no-line case and roughly 47.2% for the line-assisted case — more than double — even though the dollars invested, the dollars returned, and the 1.10x multiple are exactly the same in both. The difference is entirely the shorter time base, which is why IRR figures reported alongside heavy subscription-line usage are commonly read alongside the money multiple, not on their own.

Common mistakes

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  Comparing two funds' IRRs without checking whether one uses a subscription line and the other doesn't — as the worked example shows, the same dollars invested and returned can produce meaningfully different IRRs purely from a shorter capital-outstanding window, independent of investment skill.

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  Ignoring the facility's own interest cost as if the line were free financing — the interest paid to the lender is a real fund expense that reduces net profit, even though it does not appear in a simplified IRR-timing illustration.

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  Assuming a subscription line changes the total return an LP receives — it does not; the money multiple and total profit dollars are unchanged, only the timing of when capital is actually called and therefore outstanding.

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  Overlooking that the facility is secured against LP commitments rather than fund assets — this means the LPA's capital-call provisions need to actually support the lender's ability to call capital directly in a default, which is a term worth checking rather than assuming.

In practice

Subscription lines are far more common in traditional closed-end private equity and venture structures, which draw commitments down over several years, than in most crypto funds — many crypto vehicles are structured as open-end funds where LPs are fully funded at subscription, leaving no capital-call gap for a line to bridge. Crypto funds that do use a drawdown-style, closed-end structure face the same IRR-timing consideration as any other private fund using a subscription line.

Because a subscription line shifts IRR without shifting total profit or the money multiple, both metrics are typically read together rather than in isolation when evaluating a fund's reported performance — TVPI/DPI/MOIC figures are unaffected by subscription-line usage and provide the check IRR alone does not.

Questions, answered

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