(1) The taxes which are the subject of this Convention
are:
(i) the income tax;
(ii) the corporation tax; and
(iii) the capital gains tax;
(hereinafter referred to as `United Kingdom tax`);
(i) the income tax (podatek dochodowy);
(ii) the tax on wages or salaries (podatek od wynagrodzen); and
(iii) the surcharge on the income tax or on the tax on wages or salaries (podatek wyrownawczy);
(hereinafter referred to as `Polish tax`).
(2) This Convention shall also apply to any identical or
substantially similar taxes which are imposed by either Contracting
State after the date of signature of this Convention in addition
to, or in place of, the existing taxes. The competent authorities
of the Contracting States shall notify to each other any
substantial changes which have been made in their respective
taxation laws.
Note: This agreement applies for periods before the new
comprehensive agreement has effect (see DT15400).