I called a Senator and contact of mine and he told me that nothing has been concluded so far but that his educated guess is that consensus will be around some scales (in US$) and rates as follows:
US$0 to $7,000 will pay 0% ;
$7,001 to $10,000 will pay 15% ;
$10,001 to $15,000 will pay 30% ;
$15,001 to $20,000 will pay 45% ;
$20,001 to $30,000 will pay 60% ;
$30,001 upwards will pay 80% .