Clive Smaldon

NOT HMRC...tax accountant...Note you advise re "charitable donations" claimed...if insufficient taxable income remains after Personal Allowance this will throw all income liable at 20% to reclaim the basic rate credit on gift aid, sounds like this could be your issue?...but note, the HMRC calculation will be correct in that circumstance, you need the taxable income to cover it, otherwise the dividend rate doesent even become a factor.

Pear to Pear .

Im not HMRC, am a tax acct. Its because, the additional tax was technically due either by 31 January 2024, or, if you were liable to payments on account January and July 2023, and if liable for payments on account for 2024/25 then the first also was 31 January 2024.In all cases, the additional tax is being paid late, hence interest.

Im not HMRC, am a tax acct. If you are due to make payments on account and you reduce these, but tax is due for the year, HMRC automatically charge interest back to the original payment dates, so interest on 50% of the tax from the preceeding January and in terest on 50% of the tax from the preceeding July, i.e. both preceeding the January after. Payments on account are not "optional"...if they are calculated as due and you reduce them (in your words set them to zero) and leave less in charge than the tax that is due for the year you will always incur interest, and that interest is not appealable.

Im a tax acct, not HMRC. HMRC, This is incomplete...if a UK treaty resident. Under the DTA South African pensions are taxable ONLY in the county of treaty resdience (the person asking the question needs to determine which country has treaty residence as they are statutorily resident in both). If treaty reasident in the UK you cannot claim the tax paid in South Africa, the South African pensions should be paid gross (you need to complete forms RST01 and RST02 send to HMRC, get certificates of tax resdience in the UK, get HMRC to certify the forms) then send to South Africa for the tax to be repaid in South Africa. HMRC will disallow the tax credit eventually as claimed, it is not claimable in the UK as the pensions are ONLY taxable in the UK under the DTA for UK residents. If the person is treaty resident in South Africa then the pensions and tax do not go on Self Assessment forms.

Im not HMRC...Im a tax accountant...sorry Catherine, your logic is incorrect, the calculation is to work out the amount you are entitled to based on income, then take off the amount received and the difference to be paid to HMRC, full rates for the year dont come in to it, thats the way it is, and always has been...you were, in the legislation's eyes never entitled to the £1880 in full for the year, only the reduced amount after the addback.