Interactive Investor

10 ways to improve your portfolio without really trying

27th June 2022 10:05

Moira O'Neill from interactive investor

From cutting fees to checking how diversified your investments really are.

Whether it’s cutting fees, maximising your tax breaks or tidying your portfolio, here are 10 easy ways to improve your investment performance. None requires an expert or much time or effort.

1) Use tax wrappers to the full

Move any investments held in taxable trading accounts to your Individual Savings Account (ISA) to shelter future growth from capital gains tax (CGT). Some investment platforms enable you to do this through a “Bed and Isa” facility. It’s a great way to use your ISA allowance.

If you’re married, think about using your spouse’s annual £20,000 ISA allowance too.

The potential savings are worthwhile: for example, over 20 years, with annual average growth of 6%, £20,000 could grow to £64,000. The annual capital gains allowance is £12,300 and beyond this a higher-rate taxpayer pays 20% tax on gains. The potential saving is a chunky £6,340.

2) Reduce your platform fees

Over 20 to 40 years of investing, the savings on even small annual differences in fees could compound up to the cost of an annual holiday, a new car or home extension.

Your investment platform’s fees are either a percentage of your money invested, or a fixed amount in pounds and pence.

If you have a small portfolio of up to about £30,000, a percentage-based charge could work out cheaper, while larger portfolios above £50,000 get better value from flat fees.

The potential savings are worth looking into. For an ISA investment of £85,000, the difference in annual costs can be £600, according to the comparison tool at

If you spread the £85,000 ISA between 15 funds, making six trades a year, with annual average returns of 6%, the tool shows the difference in charges over 30 years can be £72,000.

3) Cut back on fund fees

While you can’t guarantee your chosen funds will be crackers, you can control what you pay for them.

Look for the ongoing charges figure (OCF). If you put £1,000 into a fund with an OCF of 0.5% then you have already lost £5 on costs before you’ve had a chance to see your money grow.

Passive funds that aim to replicate the performance of a stock market index, such as the S&P 500 or FTSE 100, mostly have OCFs below 0.5%, and costs have been coming down.

Actively managed funds, where professionals choose how to allocate the money, cost more, with most having OCFs of 0.5% to 1.5%. If you’re using active funds, try to get the OCFs below 1%, unless you are absolutely convinced that the manager is worth paying extra for.

Take a £100,000 investment portfolio invested over 20 years with a 6% annual return. With an OCF of 1% you will pay £55,386 in fees. If you cut your fees to 0.5% the accumulated cost reduces to £28,941, according to the fund charges impact calculator at The potential savings in this example are £26,445.

4) Go passive for the core of your portfolio

The core and satellite structure is a neat way to cut costs while making your investments easier to monitor. You put your main investment in low-cost “core” investments (think tracker funds) and a small portion, say 10-30%, is divided into higher risk “satellite” active managers and perhaps some stock picks. For the core, many investors pick a low-cost highly diversified multi-asset tracker fund, such as the Vanguard LifeStrategy 80% Equity fund with an OCF of 0.22%.

On a £100,000 portfolio and using the same calculator as above, moving to an OCF of 0.22% would incur charges of £13,051. The potential savings on a 1% OCF are £42,335.

5) Check overlap on your holdings

Your collective investments may not be as well diversified as you think if the funds that you have chosen have similar top holdings. You could check for overlap using the fund factsheets or a portfolio X-ray tool to show you where you are overexposed. Your platform may have an X-ray tool, or you could use the one at

Potential reward: you remove hidden risks and biases in your investments.

6) Ditch smaller holdings

It’s common for investors to have a mishmash of investments that were good ideas at the time, but without a master plan behind them. You may also be falling foul to what the legendary US fund manager Peter Lynch termed “diworsification”. Essentially, too much diversification can be a bad thing.

Evidence shows that 20 to 30 investments is the optimal amount to spread risk. If you own more, you might as well buy an index tracker fund that will give you a similar outcome at lower cost.

Any funds or stocks that represent 1% or less of your portfolio are not likely to add much so weed them out.

Potential reward: save time in ongoing monitoring of investments.

7) Add a diversifier

Some UK investors hold funds that only invest in the London Stock Exchange. There’s a wider world out there so look to add a global or US equity fund.

You can also spread your risk by buying assets that perform differently to equities, meaning if the stock market falls your portfolio may hold up better. Consider global bonds, UK gilts, and gold, plus some commercial property, commodities and private equity.

Potential reward: access wider opportunities and reduce volatility in the value of your portfolio over time.

8) Add an investment trust

Investment trusts have features that can help them outperform, such as a closed-ended structure that means they can take a long-term view without having to sell stock to meet redemptions. Their ability to borrow offers the chance to enhance returns but also means they can be considerably more volatile.

Studies have shown that, on average, investment trusts have outperformed funds over the long term. But the investment trust sector has its winners and losers, so choose carefully.

Potential reward: greater growth over the long term.

9) Add a dividend hero

Some 17 investment trusts have increased their payouts to investors for more than 20 years in a row, earning them “dividend hero” status. The City of London (LSE:CTY) investment trust, Bankers (LSE:BNKR) investment trust and Alliance Trust (LSE:ATST) are all marking 55 years.

Potential reward: Regular passive income from the stock market.

10) Take on a bit more risk

Are you holding too much in cash or too little in equities? Research by interactive investor found that a full 22% of 18- to 34-year-olds have a low-risk pension investment plan, potentially damaging their chances of long-term growth at a time when they can afford more risk.

Potential reward: greater growth over the long term.

Moira O’Neill is head of personal finance at interactive investor, the author of Finance at 40 and a former winner of the Wincott Personal Finance Journalist of the Year. 

This article was written for the Financial Times and published there on 24 June 2022.

These articles are provided for information purposes only.  Occasionally, an opinion about whether to buy or sell a specific investment may be provided by third parties.  The content is not intended to be a personal recommendation to buy or sell any financial instrument or product, or to adopt any investment strategy as it is not provided based on an assessment of your investing knowledge and experience, your financial situation or your investment objectives. The value of your investments, and the income derived from them, may go down as well as up. You may not get back all the money that you invest. The investments referred to in this article may not be suitable for all investors, and if in doubt, an investor should seek advice from a qualified investment adviser.

Full performance can be found on the company or index summary page on the interactive investor website. Simply click on the company's or index name highlighted in the article.

Please remember, investment value can go up or down and you could get back less than you invest. If you’re in any doubt about the suitability of a stocks & shares ISA, you should seek independent financial advice. The tax treatment of this product depends on your individual circumstances and may change in future. If you are uncertain about the tax treatment of the product you should contact HMRC or seek independent tax advice.