Digital currency is a type of electronic money, which has gained popularity and attracted the attention of many entrepreneurs. It stands out from other electronic currencies because it is a cryptocurrency. This means that no one can trace the transaction. The most widespread cryptocurrency is aBitcoin. Being a new product on the market, digital currency has become a highly controversial topic. In fact, it is difficult to decide whether it is a successful venture or not. Currently the product has more disadvantages than advantages. First, digital currency is not secure enough. According to the official bincoin website «Bitcoin on mobile allows you to pay with a simple two-step process». This means that a customer does not need to create an account, register and swipe his card. It seems like an advantage that a person can remain incognito and save time, but it becomes less safe. The official Bitcoin website warns that encrypted transactions are absolutely not secure. Not being tracked cannot guarantee safety. Users are not insured using cryptocurrency. Traditional electronic money, which can be tracked, has more advantages in this case. Another weakness, which makes the digital currency incomplete, is that a bitcoin is not controlled by the central bank. Payment is made directly between users, without intermediaries. It attracts many people, including thieves. Not being able to control bitcoins, few countries have made the cryptocurrency illegal. Also there are a number of countries that have not made it illegal, instead of doing so they have created some laws specific to bitcoin. For example: «Meetings with politicians in the UK in September suggested that bitcoin-based companies should not register with regulators, at least for the time being, while they consider their regulatory position. The most recent message from the UK suggests that bitcoins will not be treated as money, but will instead be classified as single-use vouchers, which could result in a value-added tax (sales tax) on any bitcoin sold. the most advanced country when it comes to regulating bitcoin and virtual currencies. While some issues remain unresolved, the German government has exempted bitcoin transactions held for more than a year from the 25% capital gains tax. It also classified bitcoin as a form of private money. Finland published regulatory guidance on bitcoin in September, which imposed a capital gains tax on bitcoin and taxes bitcoin produced from mining as earned income. Swedish financial regulator Finansinspektionen now considers bitcoin as a means of payment, following guidelines released last year. Exchanges must register with it and meet requirements faced by other financial institutions." (coindesk, 2013) Regardless of whether bitcoin has these disadvantages, its popularity is growing more and more. Some small businesses, such as travel websites, have done this