If you own shares that pay dividends, that income is taxable and if this is the first time you’ve had to declare it, working out what applies to you can feel challenging. The reassuring part is it splits cleanly into a handful of categories. Irish, UK, US and other foreign dividends are all treated a little differently, and once you know which bucket yours falls into, the rest is straightforward.
Dividends from Irish companies
Irish companies deduct Dividend Withholding Tax (DWT) at 25% before the dividend reaches you. This isn’t your final tax bill, it’s a credit against what you actually owe.
If you’re a higher-rate taxpayer, your total dividend income is taxed at your marginal rate (40%), plus USC and PRSI on the gross amount, with credit given for the 25% DWT already deducted. If your marginal rate turns out to be lower than 25%, you’ll get a refund of the difference.
Example: you receive a gross dividend of €4,000 from an Irish company (DWT of €1,000 already deducted, so €3,000 lands in your account). As a higher-rate taxpayer, your combined Income Tax, USC and PRSI liability on that €4,000 comes to roughly 52%, or €2,080, but you get a €1,000 credit for the DWT already paid, leaving €1,080 still due.
Dividends from UK companies
UK dividends work differently: you pay Irish tax on the net dividend you actually receive, and no credit is given for any UK tax shown as deducted on the dividend certificate.
You’ll need to convert the payment to euro and declare it on your return. Income tax along with USC and PRSI may be applicable.
Dividends from US, Canadian and other foreign companies
This is where it gets complicated, and the credit Revenue allows for foreign tax depends on whether Ireland has a Double Taxation Agreement (DTA) with the country the dividend came from. As a general rule, Revenue will never give you a credit for foreign tax that exceeds your Irish tax liability on that income and won’t refund foreign tax to you.
US dividends specifically: the US withholds tax on dividends paid to non-residents at 30% by default. If you complete a W-8BEN form with your broker (most brokers will prompt you to do this), that drops to 15% under the Ireland–US tax treaty and you get credit for that 15% against your Irish liability. It’s worth checking with your broker to ensure you complete this form since it makes a real difference to what you keep.
For dividends from other DTA countries, there’s a formula that “grosses up” the net dividend at a published rate reflecting the tax already paid by the company abroad. In practice, unless you’re receiving substantial dividends from countries outside the UK, US and Canada, this broad-brush approach won’t move the needle much on your overall Irish tax bill.
Where no DTA exists with the country involved, you’ll typically pay Irish tax on the net dividend received, with no credit for any foreign tax already deducted.
How do I actually declare all this?
When completing your Form 11 return with FastTax.ie, you’ll identify each dividend by source (Irish, UK, or foreign) and any foreign tax credit is applied in the Foreign Tax Deducted field of the income tax calculation. Our system makes it easy to track your shareholdings and declare your dividends each year.
If your dividend income spans a few different countries, or you’re just not sure where to start declaring it, FastTax.ie’s experts can talk it through with you and make sure nothing gets missed.

