Microcosm - 2nd Seedrs crowd-funding round

This is explanatory:

What are the benefits of SEIS for investors?

Investors can receive initial income tax relief of 50% on investments up to £100,000 per tax year in qualifying shares issued on or after 6 April 2012
A CGT exemption will offered in respect of gains realised on the disposal of assets in 2012-13, that are reinvested through SEIS in the same year
The individual investor can be a director of the company, but not an employee
An individual’s stake in the company can be no more than 30%
SEIS tax relief applies only to recently incorporated companies
The company must have 25 or less employees and gross assets of up to £200,000
For 2012-2013 only, a CGT exemption will be offered in respect of gains realised on the disposal of assets that are invested through SEIS in the same year.
Examples

As with our EIS tax relief examples, we’re going to keep the numbers straightforward and assume you invest £10,000, pay income tax at 45% and capital gains tax at 28%.

Case 1: The company does well and doubles in value
Investment = £10,000
Income Tax Relief = £5,000 (you get 50% of your investment back as a tax bill reduction)
Profit from sale = £10,000
Capital Gains Tax = £Zero (if you have held the shares for three years)
Tax free return = £15,000

Case 2: After three years the company’s value is the same
Investment = £10,000
Profit from sale = £Zero
Your gain = £5,000 reduction in your income tax bill

Case 3: The company folds and the shares hold no value
Investment = £10,000
Income Tax Relief = £5,000 (you get 50% of your investment back as a tax bill reduction)
At risk capital = £5,000
Loss relief = £2,250 (45% of at risk capital)
Your actual loss = £2,750 (£10,000 – [£5,000 + £2,250])