definiens: means ( a ) any national, federal, state, local or other tax, charge, fee, duty ( including customs duty ), levy or assessment in thenature of taxes, including any income, gross receipts, net proceeds, corporation, ad valorem, turnover, real property, personal property(tangible or intangible ), sales, use, franchise, excise, value added, stamp, leasing, lease, transfer, fuel, excess profits, profits, occupational, premium, interest equalization, windfall profits, severance, license, registration, payroll, environmental, capital stock, capital duty, gains, wealth, employee ’s income withholding, other withholding, unemployment or social security or similar that is imposedby any Governmental Authority ( including for the avoidance of doubt both employer and employee National Insurance contributionliabilities in the United Kingdom and corresponding obligations elsewhere ) and ( b ) any interest, fines, penalties or additions resultingfrom or attributable to any items described in this paragraph or any related contest or dispute