Irish residents are taxable on the NET UK dividend received.
There is no credit available for any UK withholding tax under the trems of the Double Tax Treaty with effect from 6 April 1999.
With regard to the UK withholding, a non-UK resident individual can in theory make a claim for a refund of this, but non-resident's refunds are limited to the excess of credit over 15% of the gross, and as dividend withholding tax is only at 10%, generally no refund will be due.
Therefore:
In the UK you pay the 10% withholding tax, and no refund due.
In Ireland you pay your marginal rate of tax and levies on the NET amount, with no credit for UK Tax.
This may not appear to be fair - but it is the way it is I'm afraid.
There is no credit available for any UK withholding tax under the trems of the Double Tax Treaty with effect from 6 April 1999.
With regard to the UK withholding, a non-UK resident individual can in theory make a claim for a refund of this, but non-resident's refunds are limited to the excess of credit over 15% of the gross, and as dividend withholding tax is only at 10%, generally no refund will be due.
Therefore:
In the UK you pay the 10% withholding tax, and no refund due.
In Ireland you pay your marginal rate of tax and levies on the NET amount, with no credit for UK Tax.
This may not appear to be fair - but it is the way it is I'm afraid.