So they got the information on my last p45 when I first aplyed but now I got my new p45 I'm 5 grand down due to maternity leave, also I think demba earned less. I thought they would send a new form automaticly when it was a new tax year? Also what happends now when I start workin? How much am I aloud to earn without it changing my tax credits? I'm planning on working 18 hours a week n this would be about what I'm gettin now when I'm on leave, can I do extra shift without it effecting the taxcredits?