Section 270-D - Tax surcharge1. In addition to the tax imposed by subdivision one of section two hundred seventy of this article, there is hereby imposed and shall immediately accrue and be collected a like additional tax on all sales, agreements to sell, memoranda of sales and all deliveries or transfers of shares or certificates subject to tax under such subdivision during the period commencing on August first, nineteen hundred seventy-five and ending July thirty-first, nineteen hundred seventy-eight. Such additional tax is at the rate of twenty-five per cent of the rates of tax on sales or transfers under subdivision two of section two hundred seventy and on sales under subdivision one of section two hundred seventy-a and the maximum amount of tax on a single qualifying sale under section two hundred seventy-e of this article. Provided, however, that the tax so calculated shall not be carried out in its computation beyond four decimal points, that is, it shall be computed to the nearest one one-hundredth of one cent.2. All the provisions of this article shall apply with respect to the additional tax imposed by this section to the same extent as if it were imposed by subdivision one of section two hundred seventy and expressly increased the rates of tax under subdivision two of section two hundred seventy and subdivisionone of section two hundred seventy-a and the maximum amount of tax on a single taxable sale under subdivision two of section two hundred seventy-a and the term "tax" as used in this article shall include the tax imposed by this section as well as the tax imposed by subdivision one of section two hundred seventy and a reference to such tax, subdivision one of section two hundred seventy or section two hundred seventy shall include the tax imposed by this section, subdivision one of this section and this section, respectively.