Thank you for your question
My name is Clare
I shall do my best to help you but I need some further informtaion first
How much do they each earn?
How much is he paying into the household?
Your niece does not have to pay him anything at all.
She will need to transfer all the Utility bills into her name as they are now her responsibility - but this does not need to be backdated.
In addition her partner needs to pay child maintenance at 12% of his GROSS income (less if he has the baby overnight more than once a week).
In the longer term your niece may also have to take over the mortgage - but that is a matter to be negotiated between them - possibly using Family Mediation
My apologies for the error - I was thinking of my own niece who is having similar problems
Under Schedule 1 of the Children Act the partner is under a duty to help house his child until the child is 18 and he will not be able to force a sale before then unless your daughter cohabits.
However he will retain his interest in the property and when it is eventually sold he will be entitled to half of the equity - with credit being given to your daughter for any capital paid off the mortgage
Yes that is correct
Yes that is correct - but only if he ALSO pays Child Maintenance - if not she can claim more
You are most welcome I hope all goes as well as it can