All
2 months ago I was seconded into a new position and received just over £1100 extra on my salary. At the same time my Tax Code changed from 543L to 603L but my take home pay has gone down by approx. £50 per month for each of the two months so far.Can someone explain in layman's terms how this works like this? To me, if my salary goes up and my Tax Code (is that personal allowance?) goes up I should end up with more at the end of each month not less.
thanks