A Stocks and Shares ISA allows investors to hold shares, funds, investment trusts and bonds in a tax-efficient wrapper. Unlike a standard dealing account, any capital gains or dividends earned inside this type of ISA are completely sheltered from UK tax. That’s a huge benefit, particularly for long-term investors hoping to grow substantial portfolios over the years.
It also offers unmatched flexibility. Investors can withdraw money whenever they like without penalty — unlike a pension, which generally locks cash away until at least age 55. With an annual allowance of £20,000, it’s possible to build up a sizeable pot entirely free from capital gains tax and dividend tax.
Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, neither does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.
However, despite these clear advantages, there are still some reasons why a Stocks and Shares ISA might not be suitable for everyone.
ISA considerations
For one, it’s inherently riskier than holding cash. Unlike a Cash ISA, which simply pays interest and protects capital, the value of investments can fall as well as rise.
There are also fees to consider. Most platforms charge account fees, and there are often fund or transaction charges on top. While small percentages might not sound alarming, over decades, these costs can substantially erode overall returns.
Finally, there’s no immediate tax relief on contributions. Unlike a pension, where investors receive tax relief upfront on money paid in, a Stocks and Shares ISA only provides tax benefits on growth and income. Of course, once money’s inside the ISA, it can be withdrawn at any time without tax — which is an advantage pensions can’t match.
Planning wisely to avoid common mistakes
The good news is that most of these issues can be mitigated with some smart planning. It pays to shop around for the best ISA provider to minimise platform and trading fees.
Careful stock picking from the outset also reduces the need for frequent trades that rack up costs. Crucially, spreading investments across different regions, sectors and asset classes can help smooth out the bumps.
For example, a diversified ISA might include growth shares like Rolls-Royce and 3i Group, paired with solid income plays such as British American Tobacco and Phoenix Group.
Last but not least, adding defensive stocks is essential. One example is the UK’s largest supermarket brand, Tesco (LSE: TSCO). People will always need groceries — even during a pandemic when most discretionary spending vanishes.
Typical defensive traits
Tesco’s share price has climbed a moderate 90% over the past five years, supported by steady revenue growth of 2-4% annually. It also pays a healthy dividend yield, typically around 3.5%, broadly in line with the FTSE 100 average. Impressively, Tesco’s dividends have grown at a compound annual rate of 28% since 2015.
Valuation looks modest, with a price-to-sales ratio of just 0.4, suggesting the share price may not fully reflect its underlying revenues. However, there are weaknesses. Tesco’s return on capital employed is only 6.6%, while net margins sit at a slim 2.3%. Its £14.6bn debt is on the high side too, though well-covered by cash flows.
These numbers hint at moderate growth and income prospects, typical of a defensive stock. This boring stability is precisely why I think it’s worth considering in a Stocks and Shares ISA, helping to protect wealth when markets turn rocky.
