Yes, but the numbers are always delayed two years. So today, I could look up what someone paid in tax in 2013 if I wanted. But it's just the total taxation amount for that year and doesnt tell you anything in detal. So if you had that number you could roughly estimate what someone earned by dividing with about 32% (the median tax rate). But due to tax deductions, sick days, vacation, pension fund deposits etc your salary guess would be very fuzzy.
