Tax credits & Temporary work

Andyp1978

Hi, made a difficul decision to come out of work back in November to look after children so my partner could complete intensive training & exams in the hope of us been better off money wise a year later. This she has now done. I quickly found work as has she. My current job is, unfortunately, temporary for 6 months. My partners is on bank whilst she gets her 'foot in the door'. New year of tax credits are on the way. When it comes to estimated earnings do I put in what I would receive in my job should it last the full year or as expected, only 6 months? Obviously if I put in the 6 month amount I'm going to receive WTC. If I then get another job or am kept on at the end we will end up with a large overpayment? I'm thinking the best option maybe to put in half way between my 6 month amount and a full year! Has anybody had this situation before? It makes it more awkward with my partners 'bank' situation as she is unsure of her hours for a while. Any feedback is appreciated