Losses
Because property development is a trade, if you make a loss in any tax year, you can set this loss against any other income you may have for that year (salary, investment income, pension, and so on), and claim a tax repayment.
In the case of losses at the beginning or end of your trading enterprise, the loss can be carried back to earlier years.
The detailed calculation of a loss for tax purposes, and how to set it off against other income, can be extremely complicated – take professional advice if you are in this situation.

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