my front windscreen is tinted.. if i paste my roadtax on the front tint, next time wana get rid of it, sure it'll leave stain on my tint. it's impossible to get rid of the stain without scratching the tint.. how how??

Road tax holder is illegal. That is why they made the current roadtax to stick on the windscreen so that people don't transfer it from car to car. Most the time at police roadblocks they only have time to see the due date of the roadtax but not the small car number plate that is printed on it.