You can certainly still sell your mother's entitlements this year, but as you have rightly said the transfer deadline is 2nd April 2006 so there are only 9 working days of trading to go. If you sell them after 2nd april they will bbe transferred for the 2007 claim year. There are advantages of doing this as you will benefit from taper relief meaning the Capital Gains Tax is 10% and the market place will be much more developed.
You should be careful as to how long a noticve you have to give to surrender the Tenancy this is normallly at least 12 months and not more than 24 months from the anniversary Term Date. If the land is not being given up until dsy September next year you may want to claim the Entitlements for 2006 in order to assist with paying the rent.
Why do you want to sell the Entitlements nback to your Landlord there were allocated to your mother / father as the farmer, the EU does not recognise landlords, as long as your tennancy agreement does not bind you to transfer the entitlements back to the landlord you do not have too. the benefit of selling them to the open market is that 120,000 farmers are you potential buyer, not one being the Landlord.
If you want to ask another uestion please ring me on (01793) 842055
George T Paton MRICS FAAV