Subscription Line of Credit
A subscription line of credit, also called a capital call facility or fund subscription facility, is a short-term revolving credit line extended to a private equity fund secured by the unfunded capital commitments of the fund's limited partners, allowing the GP to draw on credit to fund investments before making formal capital calls to LPs.
Capital call facilities have become near-universal among institutional private equity funds over the past fifteen years. The mechanics are straightforward: a commercial bank — typically a large institution with a dedicated fund finance group such as JPMorgan, Citibank, or Wells Fargo — extends a revolving credit facility to the fund based on the creditworthiness of the LP base and the total unfunded commitments outstanding. When the GP wants to close an investment, it draws on the facility, completes the transaction quickly, and then calls capital from LPs on a slightly delayed basis to repay the facility.
The primary operational benefit is timing convenience. Without a subscription line, a GP completing a competitive acquisition would need to issue capital calls to dozens or hundreds of LPs, wait for them to fund (typically ten to fifteen business days), and only then close the transaction. The credit facility compresses closing timelines, reduces operational friction, and allows the GP to act decisively in competitive deal processes.
The IRR impact of subscription line usage is significant and has been the subject of considerable industry debate. Because capital calls are delayed, the clock starts later for IRR calculation purposes, mathematically boosting reported IRR without any corresponding improvement in actual investment returns. Research studies have found that subscription line usage can inflate reported IRRs by one to three percentage points or more depending on the deployment pace and facility usage patterns.
This creates comparability problems when evaluating managers: a fund that uses an extended credit facility aggressively will report higher IRR than an equivalent fund that calls capital promptly, even if their cash-on-cash returns are identical. Institutional LPs have become increasingly attentive to subscription line usage in their due diligence processes. Many now request IRR calculations both with and without subscription line effects, and some fund documents include restrictions on facility tenor — the time between drawing on the credit line and issuing the capital call — to limit the IRR distortion.
Typical market practice caps facility usage at six to twelve months of holding before capital must be called. Facilities with longer tenors are viewed as more aggressive and attract greater scrutiny from LP advisory committees. The interest cost of the facility — paid from fund assets and therefore borne by LPs — is another consideration that must be weighed against the operational and IRR-presentation benefits.
For LPs managing large private market programs, subscription facilities affect the timing of cash outflows in ways that must be modeled carefully. A fund with an aggressive subscription line policy will call capital more sporadically and in larger amounts than one that calls promptly, creating less predictable cash demands that can complicate quarterly liquidity planning.