hi, looking for help, we've received notice from revenue that we under payed our tax. it appears that when we got married I got married tax credits and my wife got single credits, as paye workers we did not notice this. p60's came and went (again took no notice as paye workers)only really interested in the bottom line and how to make ends meet. got a form from the revenue before christmas fill it out, not think to much about it(looking for last years p60 etc) now it turns out we owe them 11,000 going back to 2011, they have cut our tax credits down to 24 euro a week for the next 3 years. don't have good understanding of the tax system, any help appreciated, thanks