Our calculator will give you an indication of what you should be paying, based on HM Revenue & Custom’s figures for the financial year 2011-2012. Obviously we’d have to ask you to fill out a full tax form for an authoritative answer on this, but for most people in normal circumstances, this should give you a pretty good idea. There are special tax allowances for older people, blind people or older married couples, which are not taken into account here. National insurance also has a wide range of different allowances for different types of workers, though most should be covered by this calculator’s assumptions. We always recommend that you seek professional advice to you needs.