What Is a Trust Deed in Private Fund Administration?

A trust deed is the legal document that creates a unit trust fund and sets the rules everyone has to follow. It defines who the trustee is, what unitholders (the fund's investors) are entitled to, and how the fund actually runs day to day. That covers how units are issued and priced, how distributions are paid, what fees the manager can charge, how the fund is valued, what happens if the deed needs to change, and how the fund eventually winds up. Every operational decision a fund admin team makes on a unit trust traces back to a clause in this document.

In the Australian and New Zealand private fund landscape, unit trusts dominate. The exact name of the document varies depending on the structure. A registered Managed Investment Scheme (MIS) in Australia uses a 'scheme constitution', which is the equivalent of a trust deed under section 601GA of the Corporations Act. Wholesale unregistered Australian schemes use a trust deed directly. NZ schemes use a 'master trust deed' under the Financial Markets Conduct Act 2013. Cayman unit trusts use a 'deed of trust'. US private funds, by contrast, are usually structured as limited partnerships, where the equivalent document is the Limited Partnership Agreement (LPA).

This guide explains what a trust deed contains, how it differs from an LPA and a scheme constitution, which sections drive day-to-day fund administration, and why deed fluency has shifted from a legal-counsel responsibility to a core operational competence.

Key Takeaways

• The trust deed is the operating contract. It defines unit classes, distribution rules, fees, valuation policy, and termination terms for a unit trust.
• Names vary by jurisdiction. Australian registered MIS funds call it a 'scheme constitution', NZ MIS funds use a master trust deed, and US private funds use a Limited Partnership Agreement (LPA).
• Fund admins operate against the deed every day. Distributions, fees, redemptions, and valuations all trace back to specific clauses.
• Regulators now require deed alignment. ASIC RG 132 and FMA supervision both expect operational practice to reconcile to the deed clause by clause.
• AI-native fund admin tools now read the deed directly. The deed has shifted from a reference document to a configuration source for the operating platform.

Trust Deed vs LPA vs Scheme Constitution

The document goes by different names depending on the jurisdiction and structure, but the substance is broadly the same. It is the legal contract that creates the fund and binds the parties to it.

• AU registered MIS: Scheme constitution, governed by the Corporations Act 2001, s601GA.
• AU wholesale unregistered scheme: Trust deed, governed by the general law of trusts.
• NZ MIS: Master trust deed, governed by the Financial Markets Conduct Act 2013.
• Cayman unit trust: Deed of trust, governed by the Trusts Act (Cayman).
• US LP: Limited Partnership Agreement, governed by state partnership law (typically Delaware).
• Luxembourg SCSp (often as a RAIF): Limited partnership agreement, governed by Luxembourg partnership law.

The terminology matters because cross-border managers and investors read across all of them. An Australian manager raising offshore capital often has to translate constitutional concepts into LPA equivalents when negotiating side letters, and a US investor allocating to an Australian trust has to map the deed's distribution waterfall (the order in which money flows to investors) onto LPA language. Operationally, the documents do similar work: the fund admin reads the deed, LPA, or constitution to determine how to issue units, calculate distributions, apply fees, run valuations, and process redemptions.

The Sections That Drive Day-to-Day Operations

A full trust deed typically runs 40 to 100 pages, but only a handful of sections drive day-to-day administration. Each one feeds a specific operational workflow, and the fund admin needs the rule encoded as structured data, not as a note in a file.

Unit classes and unit rights. The deed defines each class (ordinary, founder, A-class, B-class, and any sub-classes driven by side letters), what each class is entitled to (income, capital, voting rights, key-person protections), and any restrictions on transfers. The registry platform has to mirror this class structure exactly, and every issuance, transfer, and redemption is recorded against a specific class.

Issuance and pricing. How units are issued, the price they are issued at (NAV-based, application-based, or indicative), the cut-off times, when the trustee can refuse an application, and the documentation required. Even the precision of the unit calculation is deed-driven: some constitutions require 4 decimal places, others 2, others none, and the registry has to honour the precision the deed dictates.

Distribution waterfall. The order in which fund income flows to unitholders. In a private credit or PE fund, the waterfall typically pays return of capital first, then a preferred return (also called a hurdle, the minimum return investors get before the manager earns carry), then a catch-up (a period where the manager catches up to a defined share of profits), then a carry split (the manager's share of profits above the hurdle). Every distribution run has to reconcile to the deed clause by clause: return of capital against the deed's definition of capital, preferred return against the deed's rate and basis, catch-up and carry per the deed's structure.

Fee schedule. The management fee (rate, calculation basis, payment frequency) and the performance fee structure. Closed-end PE, real estate, and private credit funds use carry: a share of profits payable to the manager once distributions clear a preferred return (hurdle), with a catch-up mechanism that lets the manager catch up to the agreed profit split. Open-ended unit trusts and hedge-style structures use a performance fee with a high-water mark: the previous peak NAV the fund must exceed before a further performance fee crystallises. Fees are charged against the basis the deed specifies (committed capital, paid-in capital, invested capital, or NAV) and have to be traceable back to the source clauses.

Redemption mechanics. Whether the fund is open-ended (investors can redeem on demand) or closed-ended (locked for the life of the fund), how the redemption price is calculated, the notice period, the trustee's suspension rights, and any redemption gates (limits on how much can be redeemed in a given period). An open-ended unit trust can only suspend redemptions in the specific way the deed permits, even under stress.

Valuation policy. The methodology (fair value under IPEV, IFRS, or specific deed-defined standards), the frequency, the parties responsible, and the dispute mechanism. NAV (net asset value, the value of fund assets minus liabilities, divided by units on issue) is not a number the fund accountant chooses. It is defined by the deed, calculated against the deed's methodology, and signed off by the parties the deed nominates.

Termination and wind-up. The events that trigger the fund being wound up, the order in which assets are sold, and the priority of payments when the fund is closed.

When each of these is wired correctly to the deed, the fund admin produces the same numbers the auditor and trustee would arrive at against the same transactions. When they are not, every quarter becomes a reconciliation exercise.

The Amendment Process

Trust deeds change over time. New classes are added, waterfalls are restructured, fee schedules are updated. Most trusts accumulate several supplemental deeds over their life (deeds of variation, deeds of appointment of a new trustee, deeds of retirement), so a fund admin running an older trust is almost never working from a single document.

A typical amendment involves a unitholder special resolution (in registered MIS, with ASIC notification), a supplemental deed signed by the trustee, and an updated consolidated version of the deed. The fund admin needs to track which clauses are now in force, which supplemental deed they came from, the effective date of each amendment, and the downstream operational changes (registry class updates, distribution rule changes, fee rate changes) and when each one took effect.

For registered MIS, ASIC requires the supplemental deed and any related disclosure changes to be lodged. The Responsible Entity (the licensed body that operates a registered scheme) is accountable for both the lodgement and the operational alignment.

Why Deed Fluency Now Sits in the Operating Layer

For most of the last two decades, the trust deed was a document the fund admin referenced occasionally and legal counsel referenced often. Operational rules lived in spreadsheets, fee files, and registry templates that approximated the deed. That worked while the approximation was usually correct. It now breaks under two pressures.

The first is regulatory. ASIC and the FMA have both shifted their enforcement focus toward deed-aligned operational practice, specifically distribution calculations and valuation processes that reconcile to the deed clause by clause. ASIC RG 132 makes deed alignment an explicit oversight expectation for the Responsible Entity, and the FMA takes the same line in New Zealand under the Financial Markets Conduct Act 2013. 'Approximately correct' does not survive a deed-alignment review.

The second is the rise of AI agents in fund administration. The current generation of fund admin AI reads the trust deed directly, extracts the unit classes, the waterfall, the fee schedule, and the valuation policy, and applies those rules to operational workflows as structured logic. It also reads supplemental deeds, so the AI tracks the consolidated in-force version rather than the original document. Caruso's Fund Admin Agent goes further at the intake stage: it parses a new trust deed, drafts the related parties that need to be identity-verified, and creates the corresponding CDD tasks against the fund's onboarding queue.

The deed has stopped being a legal document the operations team consults when something goes wrong. It is the source of truth the operating system runs against every day. When an auditor asks 'does the distribution we ran match the waterfall in clause 12.3 of the deed', the same data the agent applied to run the distribution is the data behind the audit trail.

The Bottom Line

A trust deed creates the fund, binds the trustee and unitholders together, and sets the operational rules every fund admin workflow has to honour. In the Australian and New Zealand private fund landscape, the dominant structures are unit trusts: Managed Investment Schemes (MIS), Attribution Managed Investment Trusts (AMITs), and Portfolio Investment Entity (PIE) funds. The deed is the single most important operating document a fund admin team reads.

What has changed over the last two years is that the deed has stopped being a document the fund admin references and started being a system the fund admin operates against. Distribution waterfalls, fee schedules, valuation policies, and unit class rules now flow directly into the operating platform from the deed, not from a spreadsheet that approximates it.

For managers running registered MIS, the operational bar set by ASIC RG 132 (deed-aligned operations, evidenced against the source clauses) is now the standard. The funds that meet it are the ones running fund administration software that reads the deed directly, encodes its rules, and produces audit-grade evidence of every transaction back to the source clause.