The short answer
- Percentage charging is painless and often cheaper on smaller sums, but the bill rises with your pot even when the work does not.
- Fixed fees price the work rather than your wealth, and usually win once the portfolio is large.
- The crossover point often sits somewhere between £250,000 and £500,000, though it varies by firm and complexity.
- On big pots the difference compounds: the choice of model can be worth a five-figure sum over a decade.
Ask two equally good advisers what they charge and you may get two completely different structures: one a percentage of your money, the other a fixed pound figure. Both can be entirely fair. But over a decade, on a growing portfolio, the choice between them can add up to tens of thousands of pounds, so it pays to understand how each behaves before you sign.
This guide compares the percentage model and the fixed-fee model directly: what each rewards, where each breaks down, and how to work out which leaves more money in your pocket. It is information rather than personal advice; the right structure depends on the size and complexity of your affairs, and investment values can fall as well as rise.
How percentage charging works
Under the percentage model you pay a proportion of the money the adviser arranges or manages, commonly 1% to 3% initially and 0.5% to 1% a year on an ongoing basis. The charge is usually deducted directly from your investments, so no invoice ever lands on the mat. As your pot grows, the pounds you pay grow with it, even if the underlying work stays much the same. That gentle, automatic creep is easy to miss precisely because you never actively hand the money over.
Its appeal is real: the cost is spread and painless, it broadly tracks the work involved for smaller and mid-sized clients, and the adviser has a built-in incentive to grow your wealth, since their income rises when yours does. For someone investing a modest lump sum, a percentage charge is often the cheaper, cleaner choice: the same conclusion our overview of how much a financial adviser costs reaches for smaller portfolios.
How fixed fees work
A fixed fee is a set pound amount for a defined piece of work, say £2,500 to set up an at-retirement plan, or a £3,000 annual retainer for an ongoing relationship. The price reflects the time and complexity of the job, not the size of your portfolio. Advise on £200,000 or £2 million, and if the work is comparable, so is the fee.
That is exactly why fixed fees shine on larger sums. They break the link between your wealth and your bill, so you are paying for expertise and time rather than for the happy accident of having more money. The trade-off is that a fixed fee can feel steep on a small pot, and you receive a real invoice rather than a quiet deduction, which some people find sharper, and others find refreshingly honest. It also makes comparing firms far easier, because a pound figure is harder to disguise than a percentage layered over hidden platform and fund costs.
There is a subtler point about incentives, too. A percentage charge quietly rewards the adviser for keeping as much of your money on the platform as possible, which can, at the margins, colour advice about paying down a mortgage, gifting to family, or drawing an income. A fixed fee removes that tension entirely, because the adviser is paid the same whatever you decide to do with your money. For most reputable firms this makes little practical difference, but on a large portfolio it is a reason some clients deliberately prefer to pay a flat fee for genuinely impartial guidance.
The two compared, side by side
Percentage charging
- Painless, deducted straight from the portfolio
- Scales with the work for small and mid-sized clients
- Adviser’s income aligned with your growth
- But the bill rises with your pot even when the job does not
- Can drift well above the value of the work on large sums
Fixed fees
- Price reflects the actual work, not your wealth
- Predictable and easy to compare between firms
- Usually cheaper once the portfolio is large
- But can feel expensive on a small sum
- You receive a visible invoice to pay
Notice that the strengths and weaknesses are almost mirror images. Percentage charging is forgiving on small sums and punishing on large ones; fixed fees are the reverse. There is no universally superior model, only the one that fits the size and shape of your finances. The mistake is to treat the charging structure as a matter of principle rather than arithmetic.
Where the crossover lies
The decisive question is where the two lines cross. Below a certain portfolio size, a percentage works out cheaper; above it, a fixed fee does. The exact point varies by firm and by how complex your affairs are, but for ongoing advice it frequently sits somewhere between £250,000 and £500,000.
Illustrative ongoing cost: 0.75% percentage vs a £3,000 fixed retainer
| Portfolio | 0.75% a year | £3,000 fixed | Cheaper option |
|---|---|---|---|
| £100,000 | £750 | £3,000 | Percentage |
| £250,000 | £1,875 | £3,000 | Percentage |
| £400,000 | £3,000 | £3,000 | Roughly level |
| £750,000 | £5,625 | £3,000 | Fixed fee |
| £1,500,000 | £11,250 | £3,000 | Fixed fee |
The table lays the logic bare. At £100,000 the percentage is a quarter of the fixed fee; at £1.5 million it is nearly four times as much, for advice that may take no longer to deliver. This is why savers with larger portfolios so often gravitate towards fixed fees, and why the question matters far more once you are into six figures. Figures are illustrative; every firm sets its own rates, and platform and fund charges sit on top of both models alike.
One further wrinkle changes where the line falls: complexity. Two clients with identical £400,000 portfolios can involve very different amounts of work, one a straightforward pension and ISA, the other a tangle of legacy schemes, a rental property and an inheritance-tax question. A percentage charge treats them the same; a fixed fee, priced to the actual job, does not. So the crossover point is not really a single number but a judgement about how much genuine work your situation demands, which is why the honest way to settle it is to ask a firm to quote both structures against your own circumstances.
Watch the compounding
An extra 0.5% a year does not just cost you the charge: it costs you the growth that money would have earned. Over 20 years on a large pot, the difference between charging models can run well into five figures. Small percentages are not small.
A worked example
Take a saver with a £600,000 pension approaching retirement. A 0.75% ongoing percentage charge costs £4,500 in year one, and rises as the pot (hopefully) grows. A £3,500 fixed retainer for the same annual review, rebalancing and planning costs £1,000 less in year one, and crucially, does not climb just because markets did well. Over a decade of growth, the fixed fee could save this saver a comfortably five-figure sum, all else equal. That saved money stays invested, compounding quietly in their favour rather than the adviser’s.
Now shrink the pot to £120,000. The same 0.75% is £900 a year, well below the £3,500 retainer. Here the percentage is plainly the better deal, and insisting on a fixed fee would mean overpaying. The lesson is not that one model is virtuous and the other is not: it is that the answer flips with the size of the sum, which is why matching the model to your circumstances matters more than the label. This same size-driven logic runs through how retirement planning costs are set, where the pot at stake tends to be largest.
Tiers, caps and hybrids
The real market is rarely so binary. Many firms tier their percentage, perhaps 1% on the first £250,000, 0.5% on the next tranche, 0.25% above £1 million, which softens the sting on larger sums. Others cap the percentage above an agreed level, or blend the two: a percentage up to a threshold and a fixed fee beyond it. Some charge a fixed fee for the initial work and a percentage for ongoing service, or vice versa. The vocabulary can sound complicated, but the effect is always reducible to a single number.
None of this needs to be mysterious. Ask any adviser to show you the effective total cost of ownership as a single percentage and a pound figure across a few years, and the differences become obvious. Our guide on how to choose a financial adviser stresses the same discipline: compare the whole number, not the label on the tin, and make the firm do the arithmetic for you.
Choosing the right model
As a broad rule: if you are investing a smaller sum, a percentage is usually simpler and cheaper; if you hold a large portfolio, a fixed fee or a capped, tiered percentage will often keep more of your money working for you. Complexity matters too, very intricate affairs may justify a higher fixed fee regardless of pot size, because the work genuinely is greater. And your own preference counts: some people simply sleep better paying a clear invoice than watching a percentage nibble at their pot unseen.
Whichever model you lean towards, insist on seeing the numbers projected forward. Ask a prospective adviser to show what each structure would cost you in year one, year five and year ten on your actual portfolio, including the platform and fund charges that sit underneath both. Two firms can quote identical-sounding headline rates yet leave you thousands apart once those layers and any tiering are counted. The exercise takes minutes, it is entirely reasonable to request, and it turns an abstract debate about charging philosophy into a concrete comparison you can actually act on.
Vetted Wealth is a free service and takes no fee from you. We match you with independently vetted, FCA-regulated advisers who are happy to explain, tier or fix their charges: you can begin from our financial advisers hub, or read whether the cost is justified at all in our answer on whether a financial adviser is worth it. The best structure is the one you understand and can defend, so ask, compare, and choose with your eyes open.
Work out where you stand
These are the questions that usually settle it. Open the ones that apply to you.
Which is cheaper, percentage or fixed fees?
It depends almost entirely on how much money is involved. On smaller sums a percentage charge is often the cheaper and simpler option. On larger portfolios a fixed fee usually wins, because the adviser’s workload does not double when your pot does, yet a straight percentage charge would. The crossover point is frequently somewhere around £250,000 to £500,000, but it varies by firm.
Why do most advisers still charge a percentage?
Because it is administratively neat: the fee can be deducted straight from the portfolio, it scales with the work in many cases, and it aligns the adviser’s income with the growth of your money. It also spreads the cost so clients avoid a large invoice. The downside is that on big sums the charge can drift well above the value of the work done.
Can I negotiate a percentage down to a fixed fee?
Often, yes. Many firms will tier a percentage (lower rates on higher bands), cap it above a certain level, or agree a flat annual retainer if you ask. It is a reasonable conversation to have, particularly on a six-figure portfolio, and a good adviser will not be offended by it.
Common questions
Which is cheaper, percentage or fixed fees?
It depends almost entirely on how much money is involved. On smaller sums a percentage charge is often the cheaper and simpler option. On larger portfolios a fixed fee usually wins, because the adviser’s workload does not double when your pot does, yet a straight percentage charge would. The crossover point is frequently somewhere around £250,000 to £500,000, but it varies by firm.
Why do most advisers still charge a percentage?
Because it is administratively neat: the fee can be deducted straight from the portfolio, it scales with the work in many cases, and it aligns the adviser’s income with the growth of your money. It also spreads the cost so clients avoid a large invoice. The downside is that on big sums the charge can drift well above the value of the work done.
Can I negotiate a percentage down to a fixed fee?
Often, yes. Many firms will tier a percentage (lower rates on higher bands), cap it above a certain level, or agree a flat annual retainer if you ask. It is a reasonable conversation to have, particularly on a six-figure portfolio, and a good adviser will not be offended by it.
In summary
- Percentage charging is painless and often cheaper on smaller sums, but the bill rises with your pot even when the work does not.
- Fixed fees price the work rather than your wealth, and usually win once the portfolio is large.
- The crossover point often sits somewhere between £250,000 and £500,000, though it varies by firm and complexity.
- On big pots the difference compounds: the choice of model can be worth a five-figure sum over a decade.
- Tiers, caps and hybrids blur the line; always compare the total cost of ownership as one number.
Sources and further reading
- Financial adviser charges MoneyHelper
- Retail Distribution Review Financial Conduct Authority
Common questions on fees & costs
Ready to speak to a vetted financial advisers specialist?
This guide is free information, not personal advice. When you’re ready, we’ll match you with an established, independently vetted, FCA-regulated specialist in financial advisers, free, and with no obligation.
