Secondary income or other income that can be taxed through your tax code includes some income from property such as rental income, untaxed bank or building society interest (the first 20 per cent is usually deducted before you receive payment but you’ll owe a further 20 per cent if you pay higher rate tax), dividend [...]

You will need to be aware that a change to your income or circumstances may affect the amount of Income Tax you have to pay. Hence, you will have to inform your Tax Office about any changes as early as possible so that they can work out whether you need to pay extra or less [...]