At the risk of stating the obvious - income tax is a tax on income.
However, not all income is taxable and you're only taxed on 'taxable income' above a certain level.
Even then, there are other reliefs and allowances that can reduce your income tax bill - and in some cases mean you've no tax to pay.
Taxable income includes:
There are certain sorts of income that you never pay tax on.
These include certain benefits, income from tax exempt accounts, Working Tax Credit (WTC) and premium bond wins. These income sources are ignored altogether when working out how much income tax you may need to pay.
Nearly everyone who is resident in the UK for tax purposes receives a 'Personal Allowance', which is an amount of taxable income you're allowed to earn or receive each year tax-free. The table below shows tax free allowances for the 2010-11 tax year.
You may be entitled to a higher Personal Allowance if you're 65 or over. If you're registered blind, or are unable to perform any work for which eyesight is essential, you can also claim the tax-free Blind Person's Allowance.
Income Tax is only due on taxable income that's above your tax-free allowances.
| Personal Allowance1 | £6,475 |
| Income limit for Personal Allowance | £100,000 |
| Personal Allowance for people aged 65-741 2 | £9,490 |
| Personal Allowance for people aged 75 and over1 2 | £9,640 |
| Married Couple's Allowance - aged 75 and over2 3 | £6,965 |
| Income limit for age-related allowances | £22,900 |
| Minimum amount of Married Couple's Allowance | £2,670 |
| Blind Person's Allowance | £1,890 |
If you're due to pay income tax, there are a number of deductible allowances and reliefs that can reduce your tax bill. These include:
Married Couple's Allowance - the husband, wife or civil partner has to be born before 6 April 1935
Maintenance Payment relief - either you or your former spouse or civil partner must have been born before 6 April 1935
Unlike the tax-free allowances, these aren't amounts of income you can receive tax-free. Rather they're amounts that can reduce your tax bill.
If you're employed and you receive non-cash benefits from your employer you will have to pay tax on them.
Benefits that you might have to pay tax on include:
After your allowable expenses and any tax-free allowances have been taken into account, the amount of tax you pay is calculated using different tax rates and a series of tax bands.
| Starting rate for savings: 10%* | £0-£2,440 |
| Basic rate: 20% | £0-£37,400 |
| Higher rate: 40% | £37,401-£150,000 |
| Additional rate: 50% | Over £150,000 |
Because the rate of Income Tax you pay on savings is worked out after any non-savings income has been taken into account, if your non-savings income is less than the starting rate for savings limit (£2,440) - or if savings and investments are your only source of income - your savings income will be taxed at the 10 per cent starting rate up to the limit. But if you already have non-savings income which takes you above the starting rate, all of your savings will be taxed at the 20 per cent basic rate.
Remember, the tax band applies to your income after your tax allowances and any reliefs have been taken into account - you're not taxed on all of your income.
'Non savings income' includes income from employment or self-employment, most pension income and rental income.
'Dividends' means income from shares in UK companies.
Savings and dividend income is added to your other taxable income and taxed last. This means you pay tax on these sorts of income based on your highest Income Tax band.
Income Tax is collected in different ways depending on the type of income and whether you're employed, self-employed or not working. The different ways Income Tax is collected include:
If you're an employee or you receive a company or private pension, your employer or pension provider will deduct tax through PAYE.
If you're self-employed, you'll be responsible for filling in a Self Assessment tax return and paying your own tax.
It's important to check that you're paying the right amount of tax. You can do this by checking your:
If you're paying too much tax you can claim this money back. If you’re an employee or you receive a company or personal pension and you think you're paying too little tax you'll need to contact us to change your tax code.
As well as paying income tax on your income, you'll also have to pay National Insurance contributions. National Insurance contributions build up your entitlement to certain social security benefits, including the State Pension.
The amount of National Insurance you pay depends on how much you earn and whether you're employed or self-employed. You stop paying National Insurance contributions when you reach retirement age.
For much more information visit the HMRC website
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