3% of all the Israeli corporations registered with the IIRS (IIRS, 2006: 174).
Looking at the fields of activity of those corporations, the IIRS figures show that in the West Bank, the proportion of industrial, commercial and construction firms was larger than the Israeli average, while the proportion of firms in the financial and business services was lower than the Israeli average (ibid: 184).
Looking specifically at industrial firms (in 2003, 220 out of 1,414 corporations), the IIRS figures show that in the West Bank, the proportion of firms in the High Technology and in the Medium-High Technology categories (17%) was lower than the average for Israel as a whole (25%), while the proportion of firms in the Medium-Low Technology and in the Low Technology categories (83%) was higher than the average for Israel (75%).
Israeli corporations that operate in the West Bank are not particularly profitable: looking at corporations that reported profits (before pay to executives), it turns out that both in terms of median and average profit, West Bank Israeli corporations reported profits that were the lowest of all major Israeli districts (that is, North, Haifa, Center, Tel Aviv and South; IIRS, 2006: 195, 197, 198).
It is important to note, though, that as late as 1999, the IIRS had indeed exempted employers of Palestinians from the payment of payroll taxes (ibid).
As the IIRS explains, this is due to the fact that Israeli West Bank corporations, much like many corporations in peripheral areas of Israel within the Green Line, benefit from tax exemptions (IIRS, 2006: 176).