Foster carer Hayley Woods has been looking after children for seven years, in her three bedroom house in Oldham, Lancashire.
She currently has a ten-year-old child in her care, with a spare bedroom ready to take on another.
Under the so called 'bedroom tax' policy, her bedrooms will be deemed empty, even though they may have children in them.
She stands to lose around £80 month, and says many foster carers she knows have said they will stop fostering.
More top news
The term 'photobomb' has been named the Word of the Year 2014 by lexicographers at Collins English Dictionary.
A Swiss supermarket has apologised for its "unforgivable blunder" after selling coffee cream with pictures of Hitler and Mussolini on.
The Tonight programme looks at government efforts to improve our general wellbeing, and offers tips on how we can all boost our happiness.