Vessel vs Passthrough for LP onboarding: who should choose which

The short answer

Both companies solve the same problem: getting an LP from "I want to commit" to "the money is in the account and the compliance file is closed." They solve it at different altitudes. Passthrough is a specialist. It does subscription documents, KYC/AML and investor identity, and it does them as a layer that connects to whatever administrator, portal or CRM the GP already uses. Vessel is a platform. It does onboarding as one step in a record that begins with LP discovery and ends with the quarterly capital account statement.

If you have already chosen your administrator and your portal, and you want the best standalone onboarding workflow you can plug in, the question is whether Passthrough's guided flow and managed compliance service save you time and revisions. If you have not chosen an administrator yet and want one system from first meeting to first report, the question is whether Vessel's platform covers the whole scope. Neither publishes a price, so the quote is where the comparison finishes.

Feature comparison

What each one actually is

Passthrough is a subscription document and compliance platform. Its home page, read November 2, 2026, describes a guided investor workflow it compares to TurboTax: the LP answers questions in order, the system builds the subscription agreement, and the GP sees a dashboard of who has signed, who needs a revision and where the raise stands. The compliance layer collects KYC/AML data down to the beneficial owner, runs automatic screening and offers a managed service with compliance staff. The system connects to whatever else the GP uses: a CRM, a portal, a data room, an administrator. Passthrough states 96% investor satisfaction, 80%+ first-submission accuracy and a 20-minute average completion time for new investors. iCapital announced a definitive agreement to acquire Passthrough on February 11, 2026; the combined entity states 1,200 GPs across wealth and institutional channels.

Vessel is a fund operations platform built from the fundraising side. Its pages describe a single record that begins with an LP intelligence agent finding and qualifying prospects, continues through the data room and digital subscriptions, then KYC/AML and accreditation, and ends at the capital account, financial statements and quarterly LP report. The onboarding step is not a standalone product: when an LP signs an LOI in a Vessel data room, their identity and commitment details pre-populate the subscription agreement, and the same record carries through to the first capital call. Vessel describes automated identity verification for all LP entity types, KYC completed once and updated in seconds for future funds, continuous AML monitoring and standardised compliance packages for administrators.

What Passthrough does better

A standalone layer. Passthrough works with any administrator, any portal, any CRM. A GP who has already built a stack can add Passthrough without replacing anything. Vessel's onboarding is part of a platform; adopting it means adopting the platform.

Managed KYC/AML compliance. Passthrough describes a managed service with compliance staff who handle the screening and beneficial owner collection. For a GP without an in-house compliance officer, this is a service, not just software.

Published workflow metrics. 96% investor satisfaction, 80%+ first-submission accuracy, 20 minutes for a new investor, 2 minutes for a returning one. Vessel does not publish equivalent figures on its pages.

iCapital's institutional reach. The acquisition gives Passthrough a path to institutional LP onboarding at scale. iCapital states $1.13 trillion in global assets and 1,200 GPs in the combined entity.

What Vessel does better

One record from prospect to statement. The LP who was a prospect in the intelligence agent's list is the same row that receives the subscription agreement, the capital call and the quarterly report. No re-keying between systems, no integration to maintain.

Fundraising tools before the close. An LP intelligence agent that finds and qualifies prospects and a data room that feeds directly into the subscription are fundraising tools, not onboarding tools. Passthrough starts at the subscription; Vessel starts at the first meeting.

Administration included. If a Fund I manager has not yet chosen an administrator, Vessel's platform covers onboarding, administration and reporting in one contract. Passthrough covers onboarding only; the GP still needs an administrator.

What we did

We read Passthrough's home page and trust centre on November 2, 2026. Vessel's site is built on Framer and did not render for our fetch that day; Vessel's feature descriptions come from its own pages as indexed by search engines on November 2, 2026, and from prior reads of its product and security pages verified on October 14 and 16, 2026. Neither vendor publishes a price. Scale figures and satisfaction rates are each vendor's own. The iCapital acquisition date and terms come from iCapital's press release of February 11, 2026.

What to ask in both demos

1. Price one fund with 30 LPs and one co-invest vehicle, including KYC/AML and any managed compliance, on identical scope.
2. Show a returning LP subscribing to a second fund, and time it.
3. Show the KYC/AML file for one LP: what was collected, what was screened, when it expires and how a refresh works.
4. For Passthrough: name the administrator connectors and show what data flows back after the close. For Vessel: show the subscription pre-populating from a data room LOI, and the same LP's capital account after the first call.
5. Show what the GP exports if they leave.

Who should choose which

• Choose Vessel if you are raising or will raise again within two years, you have not yet chosen an administrator, and you want the LP's record to run from the first meeting through the quarterly report on one platform.
• Choose Passthrough if you have already chosen your administrator, portal and CRM, and you want the best standalone onboarding workflow you can plug into that stack, with a managed compliance service for KYC/AML.
• Choose neither alone if an anchor LP requires an independent administrator named on Form ADV; pick the administrator first, then decide whether its built-in onboarding is enough or whether Passthrough's guided workflow adds value on top.

The pick would move to Passthrough the day the GP already has an administrator and a portal and needs onboarding as a layer, or the day the GP's compliance officer leaves and a managed KYC/AML service matters more than platform consolidation.