A non-tariff barrier to trade is a rule or restriction that a country places on products that are imported or exported. These non-tariff barriers can make trading goods and services between countries more expensive or difficult. They can take the form of taxes, quotas, standards, and regulations. For example, some countries may make it difficult to import goods that they don't want to sell within their own borders. This makes it difficult or impossible for other countries to sell their goods to them. Another example of a non-tariff barrier is a country requiring that goods be inspected in order to be allowed into their country. This extra inspection can add time and cost to the trading process.