Archstone vs Carta: Fund Administration Platform Compared

Archstone and Carta are both fund management platforms serving venture capital and private fund managers, but they take meaningfully different approaches to how fund operations actually get run. Archstone is generally positioned as a self-service SaaS platform, giving managers tools, dashboards, and automation to handle fund operations largely in-house. Carta is generally positioned around a combination of software with outsourced administration, assigning dedicated human accounting and administrative support to manage back-office work directly. Neither approach is universally better, the right fit depends on fund size, operational appetite, and how much a manager wants to handle internally versus hand off.

At a Glance

Self-Service Software vs Outsourced Administration

This is the core distinction between the two platforms. Archstone generally provides the tools for a manager or their internal team to run fund operations directly, capital call generation, distribution calculations, investor communications, and reporting are generally handled through the software itself. Carta generally pairs its software with a dedicated accounting and administrative team that manages much of the back-office work on the manager's behalf. Managers who want direct, hands-on control over operations, or who don't have budget for a fully outsourced service, may lean toward a self-service model, while managers who prefer to hand off administrative execution to a dedicated team may prefer Carta's approach.

When Does a Fund Need Traditional Administration?

There's no hard regulatory line dictating when a fund needs a traditional, human-managed administrator rather than self-service software, this is generally more of an industry rule of thumb. Funds below roughly $30 million in AUM can often run leaner operations using automated software, while funds above that range, or those onboarding large institutional LPs such as pension funds, often benefit from a traditional administrator to help meet institutional due diligence expectations. The appropriate threshold varies by fund complexity, investor base, and specific institutional requirements, this shouldn't be treated as a fixed rule.

Tax and Audit Support

Neither platform issues certified audits or tax filings directly, that work generally still requires a CPA or auditor. Archstone generally generates clean financial reports and exportable data that an external CPA can use to prepare tax filings. Carta generally offers tax and audit support as an add-on service alongside its base administration offering. Managers should clarify exactly what's included versus billed separately before committing to either platform.

Fee Structures to Watch For

• Setup fees. Upfront onboarding costs commonly ranging from $1,500 to $5,000
• Per-entity fees. Some platforms charge additional monthly fees for every separate SPV or management company entity
• Annual escalators. Multi-year contracts sometimes include automatic price increases, commonly around 5 to 10 percent

Specific fee structures vary considerably by provider and plan, always request a full, itemized quote before signing a multi-year agreement.

Managing Multiple SPVs

Whether multiple entities can be managed under one flat subscription varies by platform and plan, some providers generally include multi-entity tracking within a base subscription without additional per-entity charges, while others generally apply a separate base fee or surcharge for each additional SPV or parallel entity. Managers running or planning multiple vehicles should confirm the specific multi-entity pricing structure directly with each provider rather than assuming either approach applies universally.

Data Security and Privacy

Both platforms generally use SOC 2 Type II compliance frameworks and data encryption as baseline security standards. Specific architectural approaches to how investor and founder data is isolated or shared internally can vary between providers, managers with particular data segregation concerns should ask each platform directly how their systems structure and separate sensitive information.

Investor Portals and Reporting

Both platforms generally provide investor portals where LPs can log in to view capital account balances, download K-1 tax forms, track distributions, and review historical performance metrics. The core LP-facing experience is broadly comparable between the two, the more meaningful differences tend to show up on the manager-facing administrative side rather than the investor-facing portal itself.

CRM and Data Room Needs

Whether a fund manager still needs a separate CRM or data room alongside a fund management platform generally depends on the specific platform and plan. Some platforms with a narrower core focus may leave managers relying on external tools for deal pipeline and pitch materials, while more all-in-one platforms may integrate these functions natively, exact feature scope should be confirmed directly with each provider rather than assumed.

Capital Calls and Distributions

On a software-led platform, the system generally calculates individual LP allocations, generates personalized capital call notices, and distributes them via email or an LP portal. The platform generally tracks bank clearings automatically, but the fund manager generally retains final authorization and executes the actual wire transfers through the fund's own bank account, the software supports the process rather than fully replacing manager oversight.

Migrating Between Platforms

Migration between systems using standard venture metrics, cap tables, capital call histories, and LP rosters is generally more manageable than migrating between fundamentally different systems. That said, migrating historical document histories and active banking linkages can still create some administrative friction, migration shouldn't be assumed to be entirely seamless regardless of which direction it goes.

Which Platform Should You Choose?

Consider Archstone if the fund is relatively lean, the team wants direct control over day-to-day operations, and multi-entity tracking without added per-entity fees is a priority. Consider Carta if the fund is scaling toward institutional AUM, onboarding large institutional LPs, or the team would rather hand off administrative execution to a dedicated outsourced team. Before committing to either, request a full itemized quote covering setup fees, per-entity charges, tax and audit add-ons, and any multi-year escalators.

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