Accounts for Cayman Investment Funds: A Practical Guide

The Cayman Islands is the domicile of choice for offshore funds. At the end of the second quarter of 2026 there were 31,145 regulated funds in the jurisdiction, 18,132 of them private funds and 13,013 mutual funds, up from 30,598 at the end of 2025. Private fund registrations alone have grown 43% since the end of 2020. Banking those funds, however, remains a bottleneck: the same due-diligence rules that make the jurisdiction credible make account opening slow for anyone who arrives unprepared.

The regulatory frame, briefly

Two statutes govern most Cayman funds. Open-ended vehicles, where investors can redeem at their option, fall under the Mutual Funds Act. Closed-ended vehicles, typically private equity, venture, credit and real-asset funds, fall under the Private Funds Act. Both are supervised by the Cayman Islands Monetary Authority, CIMA.

A private fund must apply to CIMA within 21 days of accepting capital commitments and must be registered before it receives capital contributions.
A mutual fund must generally register with CIMA before it accepts subscriptions and begins trading.
Both must have annual audits by a CIMA-approved Cayman auditor, filed with a Fund Annual Return within six months of financial year end.
In March 2026 Parliament passed amendments to both Acts confirming that tokenised funds sit inside the existing framework. Twelve tokenised funds were registered by mid-2026.

A bank will want to see where a fund sits in this frame before it opens anything: the CIMA registration or an explanation of the exemption, the offering document, and the identities of the administrator, auditor and legal counsel.

Which accounts a fund actually needs

A fund rarely runs on a single account. The typical minimum is three, and the separation is what keeps the audit trail clean.

Account	Purpose	Who controls it
Subscription account	Receives investor capital before it is called into the fund. Isolates incoming money until AML checks on the investor are complete.	Administrator, with fund oversight
Operating account	Pays management fees, administration, audit, legal and other expenses. Holds working cash.	Manager, under the fund's approval policy
Redemption or distribution account	Pays investors out. Separating it from operations stops a redemption run draining money earmarked for expenses.	Administrator, with fund oversight

Funds with SPVs, feeder structures, or a general partner entity multiply this. A master-feeder with two feeders and a GP can reasonably need eight to ten accounts, and each entity in the structure goes through its own onboarding. This is where a platform that can run a whole structure's accounts under one approval policy saves weeks rather than days.

What a bank requires from a fund

On top of the standard corporate file, which our companion guide covers, expect requests specific to funds:

The offering memorandum or private placement memorandum, and the constitutional documents of every entity in the structure.
Evidence of CIMA registration, or counsel's confirmation of the basis for any exemption.
Details of the investment manager, including its own regulatory status and beneficial owners, and of the administrator, auditor and registered office provider.
The fund's anti-money-laundering programme and the identities of its AML compliance officer, money laundering reporting officer and deputy, which Cayman law requires every regulated fund to appoint.
An investor profile: expected number of investors, their jurisdictions, and whether any are politically exposed persons or institutions in higher-risk countries.
Expected flows: subscription size and frequency, redemption terms, the currencies involved and the counterparties, including brokers, custodians and digital-asset venues.

Multi-currency and the FX question

Cayman funds are overwhelmingly US-dollar denominated, but their expenses and investors are not. Legal fees are often billed in other currencies, investors subscribe from Asia and the Middle East, and portfolio companies operate everywhere. Two structural choices determine how much friction this creates. First, whether the bank can hold multi-currency balances against the same entity or requires a separate account per currency. Second, whether conversion happens inside the operating account, with a rate locked at instruction, or requires a separate treasury relationship. The second design typically adds a day and a reconciliation step to every foreign-currency payment.

Approvals and control

A fund's constitutional documents and its administration agreement define who may authorise what. A banking platform needs to enforce the same policy: two signatories above a threshold, administrator initiation with manager approval for distributions, and a complete log of who approved each payment and when. Where that policy lives in a spreadsheet and a set of email chains, the audit process becomes expensive. Where it lives in the account itself, the auditor can read it.

Stablecoins and digital-asset funds

Funds investing in digital assets, and increasingly conventional funds receiving subscriptions in stablecoins, face an additional screen. Most incumbent Cayman banks either decline digital-asset flows or subject them to lengthy review. Cayman's virtual asset service provider regime, amended alongside the fund laws in March 2026, gives a clear regulatory basis for these activities, but a bank still needs to see wallet verification, the on-ramp and off-ramp counterparties, and a policy for converting stablecoin into fiat before an expense is paid. Choose a provider that has a documented process for this rather than one that will consider it.

Sequencing the launch

Form the entities and appoint the administrator, registered office, auditor and counsel.
Start the banking file the same week. Certification and apostilles are the long pole.
Submit the CIMA registration and share the receipt or number with the bank; many will open a subscription account against a pending registration with counsel's confirmation.
Open the subscription account first. Investors cannot fund until it exists.
Open operating and redemption accounts before first close, so expenses do not have to flow through the subscription account.
Agree the approval policy in writing with the administrator and have the bank enforce it, not just record it.

Where Mosaic fits

Mosaic is designed for exactly this structure: separate accounts for each entity in a fund complex, one login and one approval policy across them, US dollar accounts and rails including SWIFT provided by Lead Bank, stablecoin settlement by a licensed digital-asset provider into the same operating account, and a workflow built to accept the administrator's verified file rather than rebuild it. Regulated treasury for cash between calls is available to eligible customers as a separate product. Talk to our team before your first close.

Sources

This article is general information as at its publication date and not legal, tax, regulatory or investment advice. Requirements and figures change; confirm current rules with a licensed Cayman Islands adviser and the relevant institution before acting.