At present owners of qualifying Holiday Let property can set off losses from the letting activity against their other earnings. From 6 April 2011 you will no longer be able to do this. From 6 April 2011 you will only be able to carry losses forwards to set off against future holiday let profits.
From a tax planning point of view this offers a short window of opportunity. Any Furnished Holiday Let losses that you make up to 5 April 2011 can be set off against other earnings for 2010-11. This could be an opportunity not to miss as higher rate and additional tax rate payers may receive 40% or 50% of the losses from HMRC as tax refunds.
If you are planning extensive, qualifying repairs to your FHL property(ies) now may be a good time to implement and complete before 5 April 2011.