The proforma for calculating an individual’s tax liability is very important. The method for arriving at the tax due is set out step by step in ITA 2007, s 23. This is illustrated in Proforma 1 ― income tax calculation and is explained in words below.
The tax software will calculate the tax due automatically based on the entries made on the tax return, however, it is important to know the principles of the income tax computation in order to check it is correct.
The calculation for the tax years 2023/24 to 2027/28 is modified where the taxpayer has transition profits from 2023/24 due to basis period reform. This is discussed below.
Basis period reform means that self-employed taxpayers transition to a tax year basis from 2023/24. As this may give rise to more than 12 months of income being taxable in the 2023/24 tax year, transitional rules apply to the taxation of the extra income, known as ‘transition profits’. The taxpayer may also elect to spread
Payment of tax due under self assessmentNormal due dateIndividuals are usually required to pay any outstanding income tax, Class 2 and Class 4 national insurance, and capital gains tax due for the tax year by 31 January following the end of the tax year (ie 31 January 2025 for the 2023/24 tax year).
Taxation of dividend incomeIntroductionA dividend is a distribution of profit by a company to its shareholders.A dividend is not only a payment in cash. It can be the issue of new shares in exchange for forfeiting the right to a cash payment (a stock dividend). For more detail, see the Cash
Withholding taxIntroductionUK tax must be withheld on UK payments including:•interest•royalties•rental incomeUK withholding tax may be reduced under the provisions of a double tax treaty (DTT). Prior to 1 June 2021, payments of interest and royalties made to EU resident associated companies were