 With an initial height of 81 metres and 25 floors, it was the tallest building in Sweden from its completion in 1959 to 1964 when it was surpassed by the 84 metres tall Dagens Nyheter Tower.The building was designed by architect Paul Hedqvist for the Swedish National Tax Board (hence its name).It served as the office of the Tax Board until 2003, when it was decided under then Mayor of Stockholm Annika Billström that the building be rebuilt internally to turn it into student apartments.