Passthrough identity rail for private markets
Tim Flannery, co-founder of Passthrough, on building TurboTax for private fund investing
Passthrough is trying to become the identity rail beneath private market platforms, not another destination marketplace. The point of a future Passthrough login is that Carta, AngelList, iCapital, RIAs, and fund admins can keep owning investor relationships and distribution, while Passthrough stores the messy underlying investor profile, subscription, and compliance data once and reuses it everywhere. That turns a days long fund close into a near checkout flow and makes private market infrastructure more modular.
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Passthrough started at the subscription document because that is where a fund and investor relationship officially begins in practice. Its software turns a 100 to 200 question packet into a guided workflow, and completed subscriptions can be reused across later fund raises and related workflows like tax reporting and KYC.
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This is valuable because distribution platforms do not win by collecting the same investor identity data over and over. iCapital shows the adjacent model. It became powerful by being the one intermediary across feeder funds, onboarding, reporting, and document delivery for many wealth channels, while still facing major reconciliation and integration burden across fragmented systems.
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The deeper implication is portability. Private markets have historically been sticky because workflows are painful and records are scattered. A reusable investor identity layer makes it easier for new private market apps to launch, much like API driven SPV software expanded the number of vehicles and transaction types built on top of the cap table and LP record.
The next phase is a stack where identity, subscription, reporting, and eventually transfers move between platforms through shared rails. As wealth channels open to more alternative products and fee pressure rises, the winners are likely to be the companies that make private investing feel less like legal ops and more like standard internet checkout.