Not every pound earned outside an ISA or SIPP is automatically taxable. UK investors have two separate allowances — the dividend allowance and the Personal Savings Allowance — that let a certain amount of investment income be received tax-free each year, even in an ordinary General Investment Account. Understanding how these two allowances work, and how they interact with income tax bands, helps investors make sense of what they'll actually owe.
The dividend allowance
Anyone receiving dividend income — whether from individual shares or from equity funds that distribute income — has a dividend allowance of £500 for the 2025/26 tax year. The first £500 of dividend income received in a tax year is entirely free of tax, regardless of the investor's income tax band. Only dividend income above this amount is taxable, at rates that depend on the investor's overall tax band.
This allowance has been reduced considerably over recent years from a much higher historical level, which means dividend income has become a more significant tax consideration for many GIA investors than it once was, particularly those holding higher-yielding funds or a substantial number of individual dividend-paying shares outside a tax wrapper.
Dividend tax rates
| Taxpayer band | Tax rate on dividend income above the £500 allowance |
|---|---|
| Basic rate | 8.75% |
| Higher rate | 33.75% |
| Additional rate | 39.35% |
These rates apply on top of, and separately from, ordinary income tax bands — dividend income is added to other income to determine which band(s) it falls into, but taxed at these specific dividend rates rather than standard income tax rates. As with all tax figures, these rates can change and should be checked against current HMRC guidance.
The Personal Savings Allowance
Interest income — for example, from cash held within a GIA, from bond funds, or from savings accounts — is covered by a separate allowance, the Personal Savings Allowance:
| Taxpayer band | Personal Savings Allowance |
|---|---|
| Basic rate | £1,000 |
| Higher rate | £500 |
| Additional rate | £0 |
Notice that the allowance shrinks — and disappears entirely for additional rate taxpayers — as income rises. Interest above the available allowance is taxed at the investor's marginal income tax rate, in the same way as employment income would be.
How the two allowances are separate
It's worth being clear that the dividend allowance and the Personal Savings Allowance are entirely separate from each other, and from the CGT annual exempt amount covered elsewhere. An investor could, in principle, receive £500 of tax-free dividends, £1,000 of tax-free interest (as a basic rate taxpayer), and £3,000 of tax-free capital gains in the same tax year, all outside an ISA — three separate allowances operating independently, each with its own rules and thresholds.
A worked example
Suppose a higher rate taxpayer holds a diversified portfolio in a GIA, generating £1,200 in dividend income and £800 in interest income over a tax year, alongside their salary which already places them in the higher rate band.
- Of the £1,200 dividend income, the first £500 is tax-free; the remaining £700 is taxed at the higher rate dividend rate of 33.75%, giving a tax bill of £236.25 on dividends.
- Of the £800 interest income, their Personal Savings Allowance as a higher rate taxpayer is £500, so £300 is taxable at their marginal income tax rate (40% for higher rate), giving a tax bill of £120 on interest.
In this hypothetical example, the investor's total tax on this investment income comes to £356.25 — a modest but real sum that could have been avoided entirely had the same holdings been inside an ISA instead, since ISA income and gains aren't taxed at all.
Accumulation funds and "notional" dividend income
Even where a fund automatically reinvests dividends rather than paying them out as cash — an "accumulation" unit or share class — the underlying dividend income is still treated as having been received by the investor for tax purposes, sometimes called a "notional distribution." This means an investor holding accumulation funds in a GIA still needs to account for this income against their dividend allowance, even though no cash actually landed in their bank account, which can be a source of confusion for GIA investors who assume tax only applies to income they can see arriving.
Interest from fixed-rate bonds and gilts held directly
Investors holding individual government bonds (gilts) or corporate bonds directly, rather than through a fund, also generate interest income that falls under the Personal Savings Allowance in the same way as bank interest. Some gilts also offer a specific CGT exemption on the gain portion when sold, which is a distinct feature worth being aware of separately from the interest income itself.
Why these allowances matter for portfolio construction
Some investors, particularly those with substantial GIA holdings, think about the mix of income-generating versus growth-focused investments in light of these allowances. For example:
- An investor already comfortably within their dividend allowance from other holdings might weigh the tax cost of adding further high dividend-yielding investments to their GIA against holding them inside an ISA or SIPP instead, where space allows.
- Similarly, someone holding a large amount of interest-bearing cash or bonds outside a tax wrapper, especially a higher or additional rate taxpayer with little or no Personal Savings Allowance remaining, might consider whether some of that could sit inside an ISA instead.
None of this means income-generating investments should be avoided — only that where they're held (ISA, SIPP, or GIA) can make a meaningful difference to the tax outcome, particularly once ISA and pension allowances allow for it.
How these allowances interact with the starting rate for savings
There is a further, less commonly encountered allowance worth mentioning: the starting rate for savings, which can provide up to an additional £5,000 of tax-free interest for people whose other income (such as salary or pension income) is low enough. This starting rate reduces by £1 for every £1 of other income above the Personal Allowance, and disappears once other income reaches a certain level, meaning it mainly benefits those with modest income from employment or pensions but who hold meaningful interest-bearing savings or investments outside a tax wrapper. It operates alongside, not instead of, the Personal Savings Allowance, so someone eligible for both could potentially receive several thousand pounds of interest entirely tax-free in a single year.
Reporting to HMRC
Dividend and interest income above the relevant allowances generally needs to be reported to HMRC, most commonly via Self Assessment for those already required to file a return, though smaller amounts of untaxed interest can sometimes be collected through a PAYE tax code adjustment instead for those who don't otherwise complete Self Assessment. Keeping clear records of dividend and interest income received across all GIA holdings over the tax year makes this considerably more straightforward.
Dividend allowance versus Personal Savings Allowance, at a glance
| Feature | Dividend allowance | Personal Savings Allowance |
|---|---|---|
| Applies to | Dividend income from shares and equity funds | Interest income from cash, bonds, and bond funds |
| 2025/26 amount | £500, same for all taxpayers | £1,000 (basic rate), £500 (higher rate), £0 (additional rate) |
| Tax rate above the allowance | 8.75% / 33.75% / 39.35% depending on band | Marginal income tax rate (20% / 40% / 45%) |
| Available within an ISA or SIPP | Not needed — all dividend income is tax-free inside the wrapper | Not needed — all interest income is tax-free inside the wrapper |
Common mistakes to avoid
Forgetting notional income from accumulation funds
As covered above, this is one of the most commonly overlooked sources of unreported dividend income, since no cash payment serves as an obvious reminder that tax may be due.
Assuming the dividend allowance applies per source rather than in total
The £500 dividend allowance is a single annual allowance covering all dividend income received across every holding, not a separate £500 for each individual share or fund held. An investor with dividends from several different companies and funds must add them all together against the one allowance.
Not tracking cumulative interest across multiple accounts
Someone with cash or bond holdings spread across several platforms or accounts needs to add together all the interest received across all of them when checking against the Personal Savings Allowance — it isn't a separate allowance per account or provider.
Frequently asked questions
Do these allowances apply on top of the Personal Allowance for income tax?
They interact with, rather than simply stack on top of, the Personal Allowance and income tax bands — dividend and savings income is generally added to other income to determine overall tax position, with the dividend allowance and Personal Savings Allowance then applied within that calculation. The precise ordering and interaction can be technical, particularly near the boundaries between tax bands.
Does holding funds through an ISA remove the need to think about these allowances at all?
Yes, entirely — dividend and interest income within an ISA or SIPP is free of tax regardless of the amount, meaning neither the dividend allowance nor the Personal Savings Allowance is relevant to holdings inside those wrappers. These allowances only matter for money held outside a tax wrapper, such as in a GIA.
Key takeaways
- The dividend allowance (£500 for 2025/26) lets the first £500 of dividend income each tax year be received tax-free, regardless of tax band.
- The Personal Savings Allowance covers interest income and varies by tax band: £1,000 for basic rate, £500 for higher rate, and £0 for additional rate taxpayers.
- Income above these allowances is taxed at specific dividend rates, or at marginal income tax rates for interest, respectively.
- These allowances are entirely separate from each other and from the CGT annual exempt amount.
- Where income-generating investments are held (ISA, SIPP, or GIA) can materially affect the tax owed on dividends and interest.
- Always check current HMRC figures, as these allowances and rates have changed in recent years and may change again.