A credit for tax paid (foreign or domestic), for example, dividends paid by a UK resident company prior to 6 April 2016 carried a tax credit, which “franked” (either partially or wholly) the shareholder’s tax liability on the dividend (see Practice note: overview, Dividends: tax overview: Taxation of dividend income before 6 April 2016) and unilateral tax credit relief as relief for overseas tax where relief under a double taxation treaty is unavailable (see Practice note, Double tax treaties: an introduction: Nature and scope of double tax treaties).