New starting the tax year 2015 (i.e. declarations to be filed by 31st December 2016):
The lower percentage rate of 1.1% to calculate imputed rental income applies to properties whose valor catastral has been updated in the ten years previous to the declaration. Otherwise the full rate of 2% must be used.
Previously the cut-off point was 1994, so taxpayers whose property has has its valor catastral last revised between 1994 and 2005 will find themselves having to pay more tax.