Nice set of graphics that show in 5 easy steps how to launder money. Of course these 5 steps are how many major companies, including most of the large out sourcing firms who taken billions in monies from the public sector, structure themselves to avoid paying full tax.
Please see here: http://www.globalwitness.org/sites/default/files/Global%20Witness%27s%20Idiot%27s%20guide%20to%20money%20laundering_2.pdf