A: The maximum amount that a person can contribute to his Roth 401(k) for the calendar year 2015 is $18,000, or $24,000 for those over age 50.his means an investor under age 50 can invest $10,000 in a Roth 401(k) and $8,000 in a traditional 401(k) and vice versa.
Definition of free trade. : trade based on the unrestricted international exchange of goods with tariffs used only as a source of revenue.
Carbon Trade. What is a 'Carbon Trade'. A carbon trade is an exchange of credits between nations designed to reduce emissions of carbon dioxide. The carbon trade allows countries that have higher carbon emissions to purchase the right to release more carbon dioxide into the atmosphere from countries that have lower carbon emissions.