Cash-strapped Bulgaria and Romania hoped taxing cigarettes would be an easy way to raise money but the hikes are driving smokers to a growing black market instead.

Criminal gangs and impoverished Roma communities near borders with countries where prices are lower -- Serbia, Macedonia, Moldova and Ukraine -- have taken to smuggling which has wiped out gains from higher excise duties.

Bulgaria increased taxes by nearly half this year and stepped up customs controls and police checks at shops and markets. Customs office data, however, shows tax revenues from cigarette sales so far in 2010 have fallen by nearly a third.