Am I using my ISA properly?
Use your full £20,000 ISA allowance every tax year — it does not roll over. Prioritise high-growth or high-tax assets inside the ISA. Stocks & Shares ISAs suit most investors.
Why the ISA allowance matters so much
Every pound of growth inside an ISA is permanently sheltered from income tax, capital gains tax, and dividend tax. Every year you don't use your full allowance is capacity permanently lost. A £20,000 ISA contribution at 7% annual return over 20 years grows to approximately £77,000 — all of it tax-free.
What to prioritise inside the ISA
Put your highest-growth assets and most tax-inefficient holdings inside the ISA first — income-producing equities, REITs, and any individual stocks with large unrealised gains.
Key takeaway: The ISA is one of the most powerful tools available to UK investors — using it every year and putting the right assets inside it makes a massive difference over decades.
Arken flags unused ISA allowance and suggests which of your holdings to prioritise moving in for the greatest tax impact.