UK 2011 - 2012 Income Tax & National Insurance Calculator | Examples -how to calculate 

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2011 - 2012 income tax and NI calculator UK

See last years tax calculator 2010-11 -Check if you have paid the correct amount of tax. HMRC is to demand money from 1.2 million tax payers

Tax calculator for 2012-2013

Tax & NI rates 2012 - 2013

Welcome to Tax and NI calculator April 2011 to April 2012, Contains the latest official rates from HMRC
Click on the link for 2010/11 tax calculator and rates | View Tax calculator for 2012-2013 and the rates

The new national minimum wage is effective from October 2011. New rates are (per hour):

  • £6.08 for 21 years and older (increased by £0.15)
  • £4.98 for 18 - 20 years old (increased by £0.06)
  • £3.68 for under 18 years old (increased by £0.04)

28/08/2011 - All the visitors of this website if you like this website and you have a website or blog, I would be grateful if you could post a link to this website. Thanks.

20/06/11 - I am a contractor now! So I shall understand a contractors need better and reflect it here.

News: This tax calculator will soon be able to calculate your pension and student loans.
Update: There may be a delay in adding student loan and pension to the calculator then expected

Learn here how Tax and National Insurance is applied to your earning and how its deducted.
You will understand about the deductions on your payslip!

How is tax calculated, I'm confused

You have come to the right place! This is the first stop for you to get familiar about tax and then you can search and ask specific questions on Google about tax. Calculating tax can be quite complicated so this website will give you some insight to get you started. Learn income tax calculation from scratch!
Your tax is calculated after deducting your personal allowance. Everyone gets Personal Allowance unless you are earning over £100,000 (which your personal allowance starts to deduct bit by bit until it reaches zero). Your tax is calculated on your salary (or earning) left after taking away your Personal Allowance amount from your salary, (Personal Allowance is the amount where tax is not applied, making anything in that amount a tax free income) (Don't get confused; personal allowance doesn't mean that you get this amount as extra money coming to you, it is the part of your income (salary) where the tax does not apply, which is called Personal Allowance).
Example, your salary is £20,000 pa, your personal allowance is £7475 pa; so £20,000 - £7475 = £12,525. So on £12,525 is  where the tax will be taken from as a percentage (detailed examples below). Still, more is deducted for your National Insurance Contribution (NIC) if you have not reached the state pension age. The amount for National Insurance is deducted as a percentage on salary above £7228 pa. Look at the tables below.

It's a myth: It is sometimes better to not earn more, by getting a higher paid job or a second job because you will lose out by paying more tax

Personal allowance 2011/12

What is Personal Allowance: Personal Allowance is the portion of your earning where tax is not applied, making that portion of your earning tax free.

Age Condition Personal Allowance (per year)
  If you are earning up to £100,000 £7475
Under 65 If you are earning between  £100,000 and £112,950 Decreases from £7475 by 50% of every pound you earn (above £100,000) until it reaches £0
  If you are earning £112,950 or more £0
  If you are earning up to £22,900 £9490
  If you are earning between £22,900 and £28,930 Decreases from £9940 by 50% of every pound you earn (above £24,000) until it reaches £7475
65 - 74 If you are earning from £28,930 to £100,000 £7475
  If you are earning between  £100,000 and £112,950 Decreases from £7475 by 50% of every pound you earn (above £100,000) until it reaches £0
  If you are earning £112,950 or more £0
  If you are earning up to £22,900 £10,090
  If you are earning between £22,900 and £29,230 Decreases from £10,090 by 50% of every pound you earn (above £24,000) until it reaches £7475
75 and over If you are earning from £29,230 to £100,000 £7475
  If you are earning between  £100,000 and £112,950 Decreases from £7475 by 50% of every pound you earn (above £100,000) until it reaches £0
  If you are earning £112,950 or more £0

This table is rounded up to the nearest pound

If you are blind you get an additional amount on top of your personal allowance of £1980

See example #1

Taxable income/ income tax

Taxable income is your earning where tax can be applied to.
These are some that counts as taxable income; income from employment, self employment/partnership, pension, investment earning, rental property, state benefits. For more information visit: http://www.hmrc.gov.uk/incometax/taxable-income.htm#1.


Tax rates 2011

These rates are used to apply to the different portions of your earning

Your earning [per year after taking away your Personal Allowance amount from your earning] Tax rate 2011 - 2012  that is
Below £0 No tax is taken ---
£0 - £35,000 20% called basic rate
£35,001 - £150,000 40% called higher rate
over £150,000 50% called additional rate


Example: Salary minus Personal Allowance: £40,000 - £7475 = £32,525. So on £32,525, 20% tax rate will apply as you can see on the table above.

Example 2: Salary minus Personal Allowance: £50,000 - £7475 = £42,525.
On this amount (£42,525), 20% will be applied to up to £35,000 and on the remaining amount it will be 40%. Like this: 20% of £35,000 (out of £42,525), and 40% of £7525(remaining of £42,525 - £35,000). So the tax paid will be £10,010.
tax example illustration

See example #4    |    Does Tax or NI come out first?

National Insurance rate 2011

National Insurance Contribution is payable by everyone, until you have reached the state retirement age. Currently the state retirement age for males is 65 years old and females is 60 years old. National Insurance pays for your state pension and other state benefits.

Your earning [per year] National Insurance rate 2011 - 2012   that is
Earnings up to  £7228 0% No National Insurance contribution is payable
Earnings between £7228 and £42,484 12% Salary minus £7228 = X, 12% of X
Earnings £42,484 or more 2% [£42484 minus £7228 =  £35256, 12% of £35256] plus [Salary minus £42484 = X, 2% of X]

These rates are used to apply to the different portions of your earning.

Below is the above table presented in a different way (it makes it a little easier to see how to apply NI rates on your earning) :

Your earning [per year, after subtracting £7228] National Insurance rate 2011 - 2012   that is
Below £0 0% No National Insurance contribution is payable
Between £0 and £35,256 12% Salary minus £7228 = X, 12% of X
Between £35,256 or more 2% [12% of £35256] plus [Salary (after subtracting £7228) minus £35256 = X, 2% of X]

How to calculate tax?

Here are examples of how Tax and NI is calculated, so you can work out your take home/net pay:

#01 If I earn £3000 per year, how is tax and NI calculated:
You are under 65 years so you will get personal allowance of £7475.
Because your salary is below the Personal Allowance amount, you will not pay tax:
Salary minus Personal Allowance; £3000 - £7475 = below £0, so there is no amount left to tax on.
You will also not pay any National Insurance contribution because you are earning below £7228.
So you keep exactly £3000.

#02 If I earn £10,000 per year, how is tax and NI calculated:
You are under 65 years old so your personal allowance is £7475.
Now to calculate how much tax is due from you, you need to takeaway Personal Allowance amount from your salary (Salary minus Personal Allowance): £10,000 - £7475 = £2525
So £2525 is the amount where tax will be taken from.
The tax rate will be for you is 20% of £2525.
So 20% of £2525 is £505 (£2525 × 0.2 = £505). So the tax due is £505.
Now to see how much money is left for you to take home, you need to also calculate the amount of National Insurance contribution will be taken from you.
Your salary is more than £7228 and less than £42,484 so the National Insurance rate will be 12%.
Any amount below £7228 you don't need to pay National Insurance contribution (NIC).
So to apply the 12% rate you will need to takeaway £7228 from your earning.
That will be £10,000 - £7228 = £2772. £2772 is the mount where the 12% will be applied to deduct the amount for NIC. So 12% of £2772 is £332.64 (£2772 × 0.12 = £332.64).
Now you can work out how much you take home/ your net pay: Salary - Tax - NIC:
£10000 - £505 - £332.64 = £9162.36

#03 If I earn £20,000 per year, how is tax and NI calculated:
You are under 65 years old so you personal allowance will be £7475.
Subtract your Personal Allowance amount from £20000.
£20000 - £7475 = £12525
Now on £12,525 is where the tax will be deducted from. 20% tax rate will apply.
20% of £12,525 is £2505. So £2505 is deducted for tax.
For National Insurance (NI); Subtract £7228 from £20,000.
That is £12,772. On this amount 12% will be deducted for NI.
12% of £12,772 is £1532.64. For NI £1532.64 is deducted.
Total deduction is £2505 + £1532.64 = £4037.64.
You take home £15,962.36

#03.1 If I earn £30,000 per year, how is tax and NI calculated:
You are under 65 years old so your personal allowance is £7475.
Subtract your personal allowance amount from earning £30,000.
£30000 - £7475 = £22,525
£22,525 is less then £35,000, so 20% tax rate will apply (see the Tax Rates table above).
20% of £22525 is £4505 (£22525 × 0.2 = £4505).
So for tax £4505 is deducted.
For National Insurance; Subtract £7228 from £30,000.
That is £22,772. (£30000 - £7228 = £22772).
£22,772 is below £35,256 (see the NI table above), so 12% will be applied to it.
12% of £22,772 is £2732.64 (£22772 × 0.12 = £2732.64).
For National Insurance £2732.65 is deducted.
Total deduction is £7,237.64 (£4505 + £2732.64).
You take home £22,762.36 (£30000 - £4505 - £2732.64 = £30000), your net pay

#04 If I earn £45,000 per year, how is tax and NI calculated:
You are under 65 years old so your personal allowance is £7475.
Tax rate of 20% and 40% will apply. See the Tax Rates table above.
To calculate how much tax is due from you, you need to takeaway your Personal Allowance amount from your salary: (Salary minus Personal Allowance); £45,000 - £7475 = £37,525.
£37,525 is the amount where tax will be applied to.
Now 20% tax rate is applied to £35,000 out of £37,525.
So 20% of £35,000 is £7000 (£35,000 × 0.2 = £7000).
Now 40% tax rate is applied to the amount over £35,000 (of £37,525), that is £2525 (£37,525 - £35,000 = £2525).
So 40% of £2525 is £1010 (£2525 × 0.4 = £1010).
Total tax due is £8010 (£7000 + £1010).
For National Insurance contribution, 12% rate is applied to salary between £7228 and £42,484 and the 2% rate applies to amount of the money above £42,484.
Earning below £7228 you don't need to pay National Insurance contribution. So the the 12% rate will apply to between £7228 and £42,484 of your earning. And 2% above £42,484.
So, 12% of (£42,484 - £7228 = £35,256); 12% of £35,256 is £4230.72.
The 2% rate applies to your earning from £42,484 to £45,000. 2% of (45,000 - 42,484); 2% of £2516 = £50.32.
For National insurance contribution £4281.04 (£4230.72 + £50.32) is deducted from your earning.
Finally you can work out how much you take home: Salary - Tax - NIC:
£45000 - £8010 - £4281.04 = £32708.96

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The PAYE Tax and National Insurance (NI) take home pay (salary) UK calculator 2011/2012.

UK Tax year 06 April 2011.

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