1. 4 Years - If you are in the first 4 years of your business and make a loss, you can use this loss to reduce your tax bill in the previous 3 years, such as from the job you had before you set up your business. You will receive a tax refund.

2. £5,725 - If your profits are lower than £5,725, you don't have to pay the annual £140 Class 2 NI, unless you need a credit towards your state pension. Ask for a repayment for earlier years.

3. £7,755 - If your profits are higher than £7,755, you will pay 9% Class 4 NI. This gets you no state benefits and effectively increases your tax rate from the 20% income tax rate to a total 29% tax rate.

When there was a window tax paid according to the number of windows in a building, property owners blocked out some windows with the sole purpose of paying less tax.

Was this tax avoidance? Yes

Was this illegal? No

Necessarily a muted Budget, as the Chancellor had little room for manoeuvre, but there were a couple of surprises to keep us interested!

National Insurance £2,000 Credit - from April 2014

Giving a £2,000 credit from April 2014 against employer's national insurance is a welcome initiative which may encourage small businesses to take on some staff.

This is a one off tax relief within the new SEIS introduced in March's Budget.

If you have recently exchanged, or expect to before the end of the tax year, eg on a buy-to-let property, and don't welcome the 28% capital gains tax bill, you could take the view that a government subsidy to encourage you to invest your gain in a new company will help you take a risk.

For example, if you sell an asset for £250,000 and make a gain of £50,000, the capital gains tax due @ 28% is £14,000.