The difference between a Stocks and Shares ISA and a General Investment Account is the single most important tax distinction for UK investors. Getting it wrong \u2014 or just not thinking about it \u2014 costs people real money every year.<\/p>\n
Inside an ISA, you pay:<\/p>\n
No Capital Gains Tax on profits from selling investments.
\nNo income tax on dividends.
\nNo tax on interest.<\/p>\n
There’s no reporting to HMRC either. ISA investments don’t appear on your self-assessment. According to HMRC’s ISA guidance<\/a>, you can invest up to \u00a320,000 per tax year across all your ISA types combined.<\/p>\n The tax exemption has no upper limit on gains. If you put \u00a320,000 into an ISA and it grows to \u00a3200,000 over a decade, the entire \u00a3180,000 gain is tax-free. There’s no point at which the gains become taxable.<\/p>\n A General Investment Account has no tax wrapper. Gains from selling investments are subject to CGT under the normal rules \u2014 share matching<\/a>, current rates<\/a> (18%\/24%), and the \u00a33,000 annual exemption.<\/p>\n Dividends above \u00a3500 are taxed at 8.75%\/33.75%\/39.35%. Interest above your Personal Savings Allowance is taxed at your marginal rate.<\/p>\n You also have reporting obligations \u2014 if disposal proceeds exceed \u00a312,000 or gains exceed \u00a33,000, you must file SA108<\/a>.<\/p>\n There are legitimate reasons:<\/p>\n You’ve used your \u00a320,000 ISA allowance.<\/strong> If you’re investing more than \u00a320,000 a year, the excess has to go somewhere. That’s the GIA.<\/p>\n You want access to assets ISAs can’t hold.<\/strong> Some securities, certain foreign shares, and some derivative products aren’t eligible for ISAs. Options trading (on Robinhood UK<\/a> or Tastytrade<\/a>) can’t be done inside an ISA.<\/p>\n You’re building up to transfer into an ISA.<\/strong> The “bed and ISA” strategy<\/a> involves holding in a GIA temporarily, then selling and rebuying inside the ISA wrapper.<\/p>\n Consider what a \u00a320,000 annual ISA contribution saves you over time:<\/p>\nGIA: taxable by default<\/h2>\n
Why do people use GIAs at all?<\/h2>\n
The annual ISA maths<\/h2>\n