Section 13O vs 13U: Comparing Singapore Family Office Tax Incentives

Singapore’s family office boom over the past five years has been built on two letters of the Income Tax Act 1947: O and U. Section 13O and Section 13U are the two main fund tax exemption schemes that family offices use to shelter qualifying investment income from Singapore tax.

They sound similar, and indeed share much of their architecture. But they target different scales of capital, impose different substance requirements, and have very different cost profiles. Choosing the wrong scheme — or upgrading from one to the other at the wrong time — is the single most common structural mistake we see in new family office set-ups.

This guide explains exactly how Section 13O and Section 13U differ, the dollar thresholds, the staffing rules, and how to decide which scheme fits your family.

The Big Picture

Both schemes deliver the same headline benefit: exemption from Singapore tax on “specified income” from “designated investments” — meaning qualifying investment returns earned by the fund vehicle. The exemption applies to the fund, not the family office (Single Family Office, or SFO) itself, which remains a Singapore Pte Ltd taxable on its management fees.

Where they differ is in scale and substance:

• Section 13O is the “onshore” scheme. The fund vehicle must itself be a Singapore tax resident company (typically a Pte Ltd or Variable Capital Company / VCC).
• Section 13U is the “enhanced” scheme. The fund vehicle can be onshore or offshore. Suited to larger AUM, with proportionately higher staffing and spending requirements.

For a primer on the broader family office set-up process, see our Family Office Setup Guide 2026.

Section 13O: The Onshore Family Office

Section 13O is the most common starting point for new Singapore family offices. The MAS-administered scheme requires a Singapore-incorporated fund vehicle.

13O Eligibility (post-1 January 2025 framework)

• Minimum AUM of S$20 million at the point of application
• Fund must be incorporated and tax resident in Singapore
• Single Family Office (SFO) must be incorporated as a Singapore Pte Ltd
• At least two Investment Professionals (IPs) employed in Singapore — at least one must be a non-family member, and at least one IP must be on the SFO’s payroll
• Local Business Spending of at least S$200,000 per year for funds with AUM below S$50 million; rising on a tiered scale (see below)
• Capital Deployment Requirement of at least 10% of AUM or S$10 million (whichever is lower) into eligible local investments

The 13O fund and SFO must satisfy these conditions throughout the life of the scheme, not merely at application. Annual MAS attestations are required.

13O Tiered Local Spending

The Local Business Spending requirement scales with AUM:

• AUM below S$50 million → at least S$200,000 per year
• AUM between S$50 million and S$100 million → at least S$500,000 per year
• AUM above S$100 million → at least S$1 million per year

Eligible spend includes Singapore-paid salaries (including the IPs), professional fees paid to Singapore-based service providers, MAS-licensed managers’ fees, and operating expenses incurred in Singapore.

Section 13U: The Enhanced Scheme

Section 13U is targeted at larger family office set-ups, with thresholds that meaningfully filter out smaller players.

13U Eligibility

• Minimum committed capital of S$50 million at the point of application
• Fund vehicle can be onshore (Singapore Pte Ltd or VCC) or offshore (commonly a Cayman exempted company or LP, with substance maintained in Singapore through the SFO)
• At least three Investment Professionals, of whom at least one must be a non-family member
• Local Business Spending of at least S$500,000 per year as a baseline, scaling up with AUM
• Capital Deployment Requirement of at least 10% of AUM or S$10 million into eligible local investments (same as 13O)

Section 13U is approved by MAS on a fund-by-fund basis. The application is more involved than 13O and typically takes 4–6 months.

Side-by-Side Comparison

The Cost Equation

The numbers above understate the true total cost of ownership. A working family office under either scheme incurs:

• SFO Pte Ltd — incorporation, corporate secretarial, accounting and audit (S$30,000 – S$80,000/year)
• Investment professionals — typically S$200,000–S$500,000 per IP, depending on seniority
• Office space — physical office presence is expected (S$30,000–S$200,000/year)
• Custody and fund administration — S$50,000–S$200,000/year
• Legal and tax advisory — S$50,000–S$200,000/year
• Compliance and AML — S$30,000–S$100,000/year

For a 13O fund with S$20 million AUM, the all-in cost easily exceeds 1.5% of AUM — meaning the family must believe in the long-term tax exemption and asset stewardship benefits, not the short-term economics. For a 13U fund with S$200 million AUM, the same costs amortise to under 0.5% of AUM, making the economic case much stronger.

When 13O Is Right

13O is the sensible starting point if:

• Family AUM is between S$20 million and S$80 million
• Investment strategy is Asia-Pacific focused (where Singapore’s DTA network adds real value)
• The family wants to keep operations simple and onshore
• You expect the family office to grow into 13U over time as AUM increases

For a comparison of onshore Singapore VCC vs offshore alternatives in the fund context, see our VCC vs Cayman SPC analysis.

When 13U Makes Sense

13U becomes the rational choice when:

• Family AUM is at or above S$80–100 million
• The family already has offshore vehicles (e.g., Cayman LPs from prior PE fund commitments) and wants to preserve them
• The SFO has institutional ambitions — third-party deals, co-investment structures, multi-family expansion
• Family members are spread across multiple jurisdictions, requiring a flexible onshore/offshore architecture

The higher staffing and spending thresholds are easier to absorb at scale, and the offshore vehicle option opens up access to global LP commitments that may be uncomfortable with a Singapore-domiciled fund.

Upgrading from 13O to 13U

Many families set up under 13O with a stated intent to upgrade to 13U as AUM grows. The upgrade is not automatic — it requires a fresh application to MAS, transition planning, and (usually) restructuring of the fund vehicle.

Key timing considerations:

• Apply for 13U well before AUM reaches the S$50m threshold so approval is in place when you cross over
• If the fund vehicle is to change (e.g., onshore Pte Ltd to Cayman LP), structure migration carefully to avoid triggering Singapore tax on unrealised gains
• Build the additional IP headcount before applying — MAS will expect to see the team in place

Common Mistakes

Five mistakes show up repeatedly in early-stage family office work:

1. Underestimating substance. “Investment professional” means a real, dedicated, qualified person — not a cousin or part-time consultant. MAS scrutinises this closely.
2. Treating Local Business Spending as a target rather than a floor. The minimum is a floor; falling below in any year breaches the scheme conditions.
3. Confusing committed capital with deployed capital. The S$20m or S$50m thresholds are committed AUM, but the Capital Deployment Requirement is a separate test.
4. Forgetting the SFO is taxable. The exemption applies to the fund, not the SFO. The SFO charges a management fee to the fund, which is taxable income to the SFO.
5. Missing the GIP linkage. If the family is also pursuing the Global Investor Programme for permanent residency, the family office structure has to satisfy both MAS and ICA requirements simultaneously.

Practical Decision Path

If you’re advising a family considering Singapore, our typical decision path is:

1. Map current and projected family AUM over the next five years. If projected to stay below S$50 million, lean 13O. If above S$80 million, lean 13U.
2. Identify whether existing offshore structures must be preserved. If yes, 13U.
3. Check whether one or more family members is also pursuing PR via the GIP — this often pushes the structure toward 13U.
4. Test cost economics — what is the all-in annual cost as a percentage of expected returns?
5. Scenario-plan the substance: who are the Investment Professionals, and are they realistically going to be in Singapore for the long term?

Conclusion

Section 13O and Section 13U are not interchangeable. They sit on a continuum from “starter” to “scaled” family office, with materially different staffing, spending and structural commitments. Picking the wrong one wastes time and capital; picking the right one and growing into it is the path most established Singapore family offices have followed.

If you would like a confidential conversation about which scheme fits your family’s profile, or assistance with the MAS application process, the family office team at Raffles Corporate Services would be glad to help.

— The Editorial Team, Raffles Corporate Services