Sorry I completely fabricated my bands! Good lord
But the principle was correct.
That's not a comparison that shows anything though? You have to figure out as a percentage how much tax you are paying for every £1 you earn over £100,000. You therefore have to compare it to the tax you pay at £100,000 to find the marginal tax payable over £100,000.
My example using the bands you have used above (still using a rounded PA):
Scenario 1
Income: £100,000
Less PA of £10,000 = Taxable Income: £90,000
Tax: £31,865 at 20%, £58,135 at 40%
Scenario 2
Income £105,000
Less PA of £7,500 = Taxable Income: £97.5k
Tax: £31,865k at 20%, £65,635 at 40%
In scenario 2 you are earning £5,000 more than in scenario 1 but are paying an additional £3,000 in tax. That is a marginal tax rate of 60%.



I find it easier to compare the current system with one that doesn't include a PA withdrawal scheme. So
If no PA Withdrawal existed
Income: £105,000
Less PA (£10k) = Taxable Income: £95,000
Tax: £31,865k at 20%, £63,135 at 40%
Amount paid @ 40% rate = £25,254
As it stands
Income £105,000
Less PA (£7.5k) = Taxable Income: £97,500
Tax: £31,865k at 20%, £65,635k at 40%
Amount paid @ 40% rate = £26,254
That's not a comparison that shows anything though? You have to figure out as a percentage how much tax you are paying for every £1 you earn over £100,000. You therefore have to compare it to the tax you pay at £100,000 to find the marginal tax payable over £100,000.
My example using the bands you have used above (still using a rounded PA):
Scenario 1
Income: £100,000
Less PA of £10,000 = Taxable Income: £90,000
Tax: £31,865 at 20%, £58,135 at 40%
Scenario 2
Income £105,000
Less PA of £7,500 = Taxable Income: £97.5k
Tax: £31,865k at 20%, £65,635 at 40%
In scenario 2 you are earning £5,000 more than in scenario 1 but are paying an additional £3,000 in tax. That is a marginal tax rate of 60%.
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