A government would need to look into the benefits and drawbacks of a Bitcoin currency and economy. They would need to consider issues such as general taxation and transparency requirements. There is also a need for an efficient banking system. If a country decided to revise its current currency and implement a Bitcoin currency, other issues likely to be confronted would be general taxation fraud, a black economy, and the financing of terrorism.
Some advantages to implementing a Bitcoin currency would be a resistance to counterfeiting, a resistance to inflation, and an ease of tracking Bitcoin over cash for customary transaction types.