许多国家都采用增值税作为主要的税收来源。

Many countries use value-added tax as a primary source of revenue.

他们改革体制的作法更为激进，一方面整个废除所得税，一方面将税收来源转至消费上。

They would more radically transform the system by ending the income tax entirely and by shifting to taxes on consumption .

但是，当地的政府的税收来源于这样的买卖，所以，它们也会为保证既定的利益而纵容这样的投机行为。

But local governments depend on the tax revenue generated from such purchases, so they, too, have a vested interest in keeping the system in place.