I think you mean Zurich, not Geneva, see http://www.swissinfo.ch/eng/cantons-weigh-up-value-of-lump-s...
This left over 100 wealthy foreigners remaining in the canton. Depending on how much wealth they had and how it was distributed, 55 ended up paying more tax and 47 less. Their total cantonal tax bill of CHF13.8 million more than made up for the losses, so the canton did better than break even.