MetaTrader 5 is a platform for online trading Forex and CFD markets. The platform usually comes free with your brokerage account and does not charge any taxes. Any taxes you might owe is dictated by the kind of markets you are trading, not the software you use to trade them. When you are trading forex and CFDs, it is important to be aware of the tax implications of your activities. Depending on your country of residence, you may be required to pay taxes on your profits. There are a few different ways for a trader to check possible taxes when trading forex and CFDs. One way is to check with your broker. Brokers cannot give tax advice but might be able to point you to a national regulator which can. Another way to check your taxes is to use a tax calculator. There are many online tax calculators that you can use to estimate your tax liability. Finally, you can always consult with a tax professional to get specific advice on how to calculate and pay your taxes.