In June 2026, Timeline hosted a deep-dive webinar on one of the most practical questions in UK financial planning: what are the structural differences between a multi-asset fund and an MPS, and what situations have other advisers found each most useful for? Laurentius van den Worm, CFA, Head of Investment Strategy at Timeline, walked through the mechanics, the trade-offs, and the five use cases advisers have shared with the Timeline team when explaining why they have reached for the MAF over the MPS for particular clients.
What This Session Covered
MAF vs MPS: The Core Differences
What the client actually owns, who rebalances, how disposals are treated, and where customisation is and is not possible.
Inside the TM Timeline Fund Range
How the four funds map to the Tracker MPS, the NURS structure, the building blocks, and why Northern Trust was selected as sub-investment manager.
Five Use Cases Advisers Have Identified for the MAF
CGT efficiency, natural income, dividends vs interest, platform availability, and FSCS protection through the fund's regulatory structure.
When the MPS Still Wins
Cost advantage, full transparency, ISA and pension suitability, tax-loss harvesting, and lower barriers to bespoke portfolio construction.
Performance Tracking and Data Nuances
Why the fund and the MPS show marginally different numbers, and the four mechanical reasons those gaps exist rather than reflecting different investment decisions.
Live Audience Q&A
Questions on conflicts of interest, fund longevity, income share classes, risk rating implications, and the case for very large GIAs.
Presenter & Host
Laurentius van den Worm, CFA
Head of Investment Strategy, Timeline
Jake Usher
Host, Timeline
MAF vs MPS: The Structural Differences
The question of when to use a multi-asset fund versus a model portfolio service is genuinely nuanced. Both can deliver the same underlying investment philosophy. The differences lie in structure, ownership, tax treatment, and operational complexity.
In a multi-asset fund, the client holds one fund. It appears as a single line item on the platform, and rebalancing happens internally, with no disposal for the underlying investor. In an MPS, the client holds each underlying fund directly, rebalancing creates a disposal event, and full look-through visibility of holdings is available at all times.
Customisation also differs. A multi-asset fund is standardised across all investors. A model portfolio service, while the models themselves are fixed, allows for more flexibility at the network or individual client level, with lower barriers to building bespoke arrangements.
"A multi-asset fund is a little bit more complicated than just a model portfolio service. It is important for advisers and investors to understand all the moving parts."
Laurentius van den Worm, CFA, Head of Investment Strategy, Timeline
Inside the TM Timeline Fund Range
The TM Timeline multi-asset fund range comprises four funds, each mapping directly to the equivalent Tracker MPS. TM Timeline 30-50% Equity mirrors Tracker 40. TM Timeline 50-70% Equity mirrors Tracker 60. TM Timeline 70-90% Equity mirrors Tracker 80. TM Timeline 100% Equity mirrors Tracker 100. The underlying building blocks are identical; only the equity-to-bond split changes across risk profiles.
The funds are structured as Non-UCITS Retail Schemes (NURS), meaning they are UK-domiciled. The NURS structure limits concentration to 34% per underlying holding, which is why multiple developed world equity funds from Legal and General, Northern Trust, and Vanguard are used across the range. On the emerging markets side, both MSCI and FTSE EM indices are represented, reflecting the fact that index composition differences can have material performance implications for specific markets.
The Authorised Corporate Director is Tutman, which acts solely in the interest of the investor, independent of Timeline. Northern Trust has been appointed as sub-investment manager and is also responsible for fund administration and custody. This dual relationship is documented in the fund's conflict of interest policy, with a specific limit of no more than 50% exposure to Northern Trust funds to preserve Timeline's independence.
The funds launched on 12 August 2025. Performance data for promotional materials will be available once the funds reach a full twelve-month period, in line with FCA requirements. In the interim, tracking difference data is available via Timeline's Control Centre, demonstrating close alignment between each fund and its corresponding Tracker MPS.
"We see this multi-asset fund as part of our total tracker strategy. It is a different vehicle to hold some of those funds, but the underlying holdings are exactly the same."
Laurentius van den Worm, CFA, Head of Investment Strategy, Timeline
Five Use Cases Advisers Have Identified for the MAF
CGT Efficiency in GIA Accounts
Rebalancing inside a multi-asset fund is not a disposal for the underlying investor. Every rebalance within an MPS, by contrast, creates a disposal event and a potential capital gains tax liability. Over a twelve-year backtested period of the Timeline Tracker portfolio, the fund structure resulted in a cumulative CGT saving of approximately five thousand pounds on a hundred thousand pound portfolio, relative to an MPS equivalent where CGT was paid on each taxable event. This is not tax advice, and the impact will vary depending on individual client circumstances.
The benefit is not simply about paying less tax in total. It is about the deferral. Rolling up capital gains and allowing that tax deferral to compound creates a meaningful difference over the long term, particularly for clients holding GIAs over multi-decade investment horizons. Timeline's drift-based rebalancing approach reduces the frequency of MPS rebalances considerably, but disposals remain inevitable within the model portfolio structure.
Natural Income via Income Share Classes
Timeline does not currently offer income share class model portfolios. The multi-asset fund range does. The TM Timeline 50-70% Equity fund was paying a yield of 2.36% as at the May 2026 fund fact sheet. To illustrate the type of situation advisers have raised: for a client drawing 61,000 pounds per year from a 2.75 million pound portfolio, the income share class on the 50-70% equity fund would cover that income requirement from natural yield. Whether this is suitable for any individual client depends on their specific circumstances and is a matter for their adviser. The MPS range does not currently offer a comparable income share class option.
Dividends, Not Interest
Under the 60% qualifying assets rule, funds with more than 60% interest-bearing assets must distribute income as interest rather than dividends. Because all four TM Timeline funds (with the possible exception of the 30-50% equity fund in specific market conditions) maintain equity exposure above 40% throughout a calendar year, they distribute as dividends. For certain corporate investors, this distinction may have direct tax implications. As an illustration of the kind of scenario advisers have raised: where a corporation is exempt from dividend tax but not from interest tax, the difference on a 1 million pound investment at the 2.36% yield could be approximately 6,250 pounds per year. This is not tax advice, and advisers should refer clients to a suitably qualified tax professional for guidance on their specific position.
Broader Platform Availability and Operational Simplicity
Where a platform lacks full DFM functionality, deploying an MPS can be operationally complex. A fund is a single line, regardless of platform capability. Timeline manages one fund, irrespective of how many platforms it sits on. For advisers, this also means simpler re-registration: moving platform requires moving one line, not unwinding and rebuilding a model portfolio. Timeline will support onboarding the fund onto platforms willing to carry it, with the caveat that the fund will not be placed on direct-to-consumer platforms. Timeline is an adviser-led business and intends to remain so.
FSCS Protection and Regulatory Safeguards
As a UK-authorised NURS, the TM Timeline funds carry FSCS protection of 85,000 pounds per eligible person per firm. This is in addition to the structural protections built into the vehicle itself: the independent ACD (Tutman), segregated custody with Northern Trust as depositary, and FCA authorisation. The FSCS does not protect against declining asset prices, but it does protect against mismanagement. For advisers whose clients prioritise the visibility of this protection, the NURS structure makes this straightforward to evidence.
When the MPS Remains the Better Answer
Laurentius was emphatic that this is not a case of one product replacing the other. The majority of Timeline's assets remain within the MPS range, and there is no commercial incentive for Timeline whether an adviser chooses the fund or the MPS.
Cost
The Tracker MPS OCF plus DFM fee totals approximately 0.16%, compared to 0.20% for the multi-asset fund. Over long periods and larger portfolios, that differential is meaningful.
Transparency
Full visibility of every underlying fund is available within the MPS. In a multi-asset fund, the client sees one line on the platform, even where look-through analytics are available via Timeline's Control Centre.
ISAs and Pensions
In tax-advantaged wrappers, the CGT efficiency argument for the fund does not apply. In those cases, the MPS cost advantage and greater transparency make it the natural default.
Tax-Loss Harvesting
Within an MPS it is possible to unlink specific holdings and crystallise losses at the individual holding level. This is not possible within a fund, where the investor holds a single unit representing all underlying assets.
Bespoke and Lower-Minimum Opportunities
Building a new model portfolio on a platform carries lower barriers to entry than launching a regulated fund. For adviser networks requiring customised models or serving clients below typical DFM minimums, the MPS remains more flexible.
"From Timeline's point of view, there really is not any commercial incentive for us whether you use the multi-asset fund or the MPS. It is literally just to make sure we give advisers all the tools they need to be the most efficient in the advice process."
Laurentius van den Worm, CFA, Head of Investment Strategy, Timeline
Key Takeaways
Same strategy, two wrappers
The TM Timeline fund range and the Tracker MPS share identical building blocks. The difference is structure, tax treatment, and operational mechanics.
The wrapper decides
In an ISA or SIPP, the tax case for the fund is off. In a GIA or investment bond, it is live. Account type is typically the most reliable starting point for the decision.
The fund's edge is tax and simplicity
CGT deferral, natural income, dividends rather than interest, one line to manage, and no model drift between rebalances.
The MPS still wins for many clients
Lower cost at 0.16% versus 0.20%, full transparency of holdings, suitability for tax-advantaged wrappers, and tax-loss harvesting flexibility.
For professional adviser use only. Not for retail distribution. Timeline Portfolios is authorised and regulated by the Financial Conduct Authority (FRM 840807). This content is for information purposes only and does not constitute advice or a personal recommendation. Past performance is not a guide to future performance. The value of investments may go down as well as up and clients may not get back the amount invested. FSCS protection applies to the TM Timeline fund range as UK-authorised Non-UCITS Retail Schemes; the FCA does not protect against declining asset prices. Tax treatment depends on individual circumstances and may be subject to change. This content does not constitute tax advice.
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