

A GIA is not a starter wrapper. It is the place your money goes when your ISA and pension cannot hold any more. Use it wrong and HMRC takes a 33.75% bite of your dividends.
GIA tax allowances and rates, 2026/27
| Tax | Annual allowance | Rate above allowance |
|---|---|---|
| Dividend tax | £500 | 8.75% / 33.75% / 39.35% |
| Capital gains tax | £3,000 | 18% / 24% |
| Interest (PSA) | £1,000 / £500 / £0 | Marginal income rate |
Below roughly £30,000 invested these allowances usually swallow the whole bill.
Key takeaways
A GIA is worth it only once your ISA is full and your worthwhile pension contributions are made
Below about £30,000 invested, the dividend and CGT allowances usually swallow the tax bill anyway
Bed-and-ISA every April is the cheapest way to drain a GIA back into the tax shelter over time
For most UK retail investors, a GIA is a temporary holding pen, not a destination