Tax Creditd 2012/2013 2013/2014

Hi,

First time poster, was reccomended to try here for help/advice from a friend.

I was wondering if anyone could help me with working out tax credits for ideally 2013/2014 or a guestimate


2012/2013
Me £8000
Oh £14000
Childcare £315 pw


2013/2014
Me £18000
OH £15000
Childcare £315 pw



Is there any other info needed?

Thank you in advance