No, I dont have any certificate from the revenue. I believe the correct term is a CAT Discharge certificate, seeing as the property in question was subject to tax. This property was returned to the revenue several years ago. However I may have , in error, ommitted some assets not of signifigant value, or indeeeed the valuation dates may be disputed by the revenue which concerns me. I believe that regarding CAT the valuation date, when tax falls due, and interest on tax accrues, is ultimately a matter of agreement between revenue and taxpayer. I also understand, that if an unprompted voluntary disclosure is made to revenue regarding outstanding tax, they may mitigate the penalty, but the interest in non-negotiable. I am afraid to ask for a CAT for a property being sold (which was returned for tax) in case the revenue try to question my inital tax return. I think I will fully examine the last return and send in a new return if there is any omission.