A free trade agreement removes all barriers to trade among members, which means that they can freely move goods and services between them. When it comes to dealing with non-members, each member`s trade policies continue to come into force. A trade agreement signed between more than two parties (usually neighbouring or in the same region) is considered multilateral. They face the main obstacles – to content negotiation and implementation. The more countries involved, the more difficult it is to achieve mutual satisfaction. Once this type of trade agreement is governed, it will become a very powerful agreement. The larger the GDP of the signatories, the greater the impact on other global trade relations. The largest multilateral trade agreement is the North American Free Trade Agreement between the United States, Canada and Mexico.  Deep trade agreements are important institutional infrastructures for regional integration.
They reduce business costs and set many rules in which economies are active. If designed effectively, they can improve political cooperation between countries and thus promote international trade and international investment, economic growth and social well-being. Studies by the World Bank Group show that regional trade agreements vary according to commitment and agreement between member states. Regional trade agreements are multiplying and changing their nature. In 1990, 50 trade agreements were in force. In 2017, there were more than 280. In many trade agreements, negotiations today go beyond tariffs and cover several policy areas relating to trade and investment in goods and services, including rules that go beyond borders, such as competition policy, public procurement rules and intellectual property rights. ATRs, which cover tariffs and other border measures, are “flat” agreements; THE RTAs, which cover more policy areas at the border and at the back of the border, are “deep” agreements. The logic of formal trade agreements is that they reduce penalties for deviation from the rules set out in the agreement.  As a result, trade agreements make misunderstandings less likely and create confidence on both sides in the sanction of fraud; this increases the likelihood of long-term cooperation.  An international organization such as the IMF can further encourage cooperation by monitoring compliance with agreements and reporting violations.  It may be necessary to monitor international agencies to detect non-tariff barriers that are disguised attempts to create barriers to trade.
 There are a large number of trade agreements; some are quite complex (the European Union), while others are less intense (North American free trade agreement).  The resulting level of economic integration depends on the specific type of trade pacts and policies adopted by the trade bloc: regional trade agreements are very difficult to conclude and claim when countries are more diverse. The second is classified bilateral (BTA) if it is signed between two pages, each side could be a country (or another customs territory), a trading bloc or an informal group of countries (or other customs sites). Both countries are relaxing their trade restrictions to help businesses prosper better between countries. It certainly helps to reduce taxes and helps them discuss their trade status.