Self Assessment for Dividend Income 2026/27

When You Must File

You must file a Self Assessment tax return if your dividend income exceeds £500 in a tax year. This threshold has applied from the 2024/25 tax year onwards, it reduced from £1,000 in 2023/24 following the cut in the dividend allowance. If your total dividends are £500 or less, no return is required for dividend income alone (though you may need to file for other reasons).

If you are already required to file a Self Assessment return for another reason, self-employment income, rental income, salary above £100,000, a director's tax affairs, you simply add your dividend income to the existing return. You do not file separately for dividends. The requirement to file applies to each tax year independently: if your dividends exceeded £500 in 2024/25 but not in 2025/26, you file for 2024/25 but may not need to for 2025/26 (unless another trigger applies).

What to Include on the Return

Dividend income is reported in the 'UK dividends' section of the Self Assessment return (SA100 and, if needed, SA101 supplementary pages). You enter the gross dividend amount received in the tax year. For UK dividends, the gross amount is the cash amount you received, there is no withholding tax on UK dividends, so the figure from your broker statement or dividend voucher is the gross amount.

Older dividend vouchers (pre-April 2016) included a notional 10% tax credit, but this was abolished in April 2016. If you receive dividends from UK companies via a broker, your end-of-year statement will show the total dividends received. Investment platforms typically provide a consolidated tax certificate each April showing dividends paid during the year, this is the figure to use. Enter the total UK dividend income and HMRC will calculate the tax using the allowance and applicable rate.

Dividend Income from Foreign Companies

Foreign dividends are more complex. Most overseas companies are subject to withholding tax in their home country before the dividend reaches you. The withholding tax rate varies: 15% is common from the USA under the UK-US tax treaty, though the standard US rate is 30%. France typically withholds at 12.8% under the UK-France treaty.

On your Self Assessment return, you declare the gross dividend (before withholding) and claim credit for the withholding tax already paid overseas. The credit is limited to the UK dividend tax that would otherwise be due, you cannot get a repayment if the withholding tax exceeds your UK liability. For many basic-rate taxpayers whose dividend tax rate is only 8.75%, a 15% US withholding tax already exceeds the UK tax due, meaning there is no additional UK dividend tax but also no repayment of the excess withholding. You should report foreign dividends in the 'Foreign income' section of the return (SA106 supplementary pages).

Penalties for Not Filing

If you are required to file a Self Assessment return and fail to do so, HMRC charges a £100 fixed penalty immediately after the 31 January filing deadline (even if no tax is owed). Daily penalties of £10 per day accrue after 3 months, up to a maximum of £900. After 6 months, a further penalty of 5% of the tax due (or £300 if greater) is charged. After 12 months, another 5% penalty applies.

For investors who are unaware of the filing requirement, perhaps because their dividends only recently crept above the £500 threshold, HMRC can impose all of these penalties retrospectively. If you have missed a filing deadline, the best approach is to register for Self Assessment and file as soon as possible. HMRC may waive penalties in cases of genuine ignorance, but this is not guaranteed. The interest charge on late payment is separate from the penalties and accrues from the 31 January payment deadline.