Q. In July 2011 I sold a property which had been used for my business. I planned to reinvest the proceeds in another property, but that acquisition never happened. I know I should now pay Capital Gains Tax on the gain made in July 2011. How do I go about doing that?

A. The period in which you should have reinvested the proceeds ran out in July 2014, so you do need to pay the CGT due for 2011/12 unless you get the tax inspector to agree to extend the period for reinvestment. He will only agree to an extension if you were prevented from reinvesting by circumstances beyond your control.

The disposal made in July 2011 should have been reported on your 2011/12 tax return as part of your provisional claim for roll-over relief. You should now write to the tax office to withdraw that provisional claim and declare the full taxable gain. The tax will be payable immediately and interest will run from 31 January 2013.

Q. I am thinking of selling a flat that has been let since I acquired it in 2012. I do not own another property. My tenant is moving out soon, after which I will either stay in it myself or sell it. Will I get lettings relief to reduce the capital gains tax (CGT) payable?

A. Lettings relief only applies if you have lived in the property as your main home for some period. So if your tenant moves out and you sell the property immediately you will not get lettings relief, or any relief from CGT, other than the annual exemption.

However, if you move into the property and make it your own home, the gain relating to your period of occupation will be free of CGT. The last 18 months of ownership will also be free of CGT even if you are not living in the property during that period. The total gain on sale can also be reduced by lettings relief, which is limited to the lowest of these three amounts:

- the part of the gain which is exempt because the property was your main home;
- the gain attributed to the period it was let; and
- £40,000.

There are thus large tax savings to be made by occupying the property as your main home, but you must show that you intended the property to be a permanent residence, not a temporary occupation while the property was on the market. It is the quality of occupation not the length of time that demonstrates the property was your main home.

How do I calculate my share of the profit?

Q. My husband inherited a house in 1986 when it was worth £40,000. He gave me a half share in the property in 2009 when it was worth £450,000. We sold the property in December 2010 for £460,000, but we never lived there. How do I calculate my share of the profit?

A. As you and your husband were living together during the tax year in which he gave you a half share in the property, that gift is deemed to be made at a value that creates no gain and no loss for your husband. Thus in 2009 he disposed of half the property to you at a value of £20,000, the tax cost of which was half the probate value: £20,000. Hence he makes no profit on his gift (£20,000 - £20,000 = nil). The market value of the property in 2009 is irrelevant. You acquire the half share in the property in 2009 at a deemed cost of £20,000.

When the property was sold in 2010 your share of the proceeds was £230,000 (£460,000/2) and the cost of your half share was £20,000. Your share of the profit (taxable gain) is £210,000 (£230,000 - £20,000). Your husband has also made a taxable gain on the sale of the property of £210,000. You can both deduct an annual exemption of £10,100 from your share of the gain, but the balance of the gain will be subject to capital gains tax.