I bought a property with a friend in 2005 and rented it out immediately. It has been rented since then. We didnt register with the PRTB. We have recently got new tenants and have a completed PRTB form. We want to get ourselves sorted from a tax point of view. Its a 35 year mortgage so most of the rental income can be written off against the interest payments on the mortgage. What view would the Revenue take if we make a voluntary disclosure (backdated to 2005 of course) now? Will they ask us to pay tax on the rental income because we were not registered with the PRTB or will they just be glad that we have registered and let us off? Thanks.