Higher rate taxpayers must top up the tax to 40 per cent.

Higher rate taxpayers will be liable to a further tax charge.

Yet top rate taxpayers today provide a bigger share of our tax revenues than they did before.

If you're a basic rate (20 per cent) taxpayer you don't need to take any action.

If you're a basic rate taxpayer you'll have no further tax to pay.

If you're a higher or additional rate taxpayer you'll have more tax to pay.

But for the higher rate taxpayer aged under 65, there will be an increased tax charge of £6.13 a week or about £319.

If you're an additional rate taxpayer you'll have to claim the difference through your tax return.

Higher rate taxpayers can still expect to lose child benefit.

Only higher rate taxpayers can benefit from tax relief on the difference between the two rates.