I got married last year and informed the revenue and they told me to send in the relevent form by the end of the year as the tax wouldnt change till the end of the tax year. I have only thought of doing that now but i have been claiming single parent allowance since my wife and i didnt live together till we got married. My query is, will i owe revenue money now because i have had the extra allowance for a few months? My wife only works 2 days a week so will taking her credits help? I want to try and get this sorted in my head before i ring the revenue. Any help would be appreciated...