I am an unmarried father, paid £288/month to CSA for last 7 years for my son. Not reviewed amount as agreed with the mother to pay car costs, furniture, clothes and phone over the years. She receives state benefits. Since March 2011 she has had financial difficulty (failed the new residency test requirements). I bankrolled her £6K over the last year on top of £288/mnth CSA to avoid her getting kicked out of the country and lose my son. She has now passed the residency test and the majority of her benefits reinstated, in a couple of months she will get full benefits. I can no longer give any additional money on top of CSA as I have run out. As she is behind on her rent, she suddenly won't let me see my son and has threatened to contact the CSA to get arrears on the difference between £288/mnth and pay rises over the last 7 years (probably about £2k)unless I give her extra cash. Based on current salary I should pay £360/mnth. I have proof of recent £6K given to her as done through bank transfers. Is it likely the CSA will take into account additional money I have given her, particularly in the last year, or will they start charging me £360/month plus arrears? Far as I'm concerned I've overpaid her enough in just the last year to keep my payment at £288/mnth for the next couple of years. How will CSA view this? Is it better for me to contact them or wait to see if she goes through with this!