To: JimisJim who wrote (186877 ) 12/4/2014 2:24:55 AM From: Elroy Jetson Read Replies (1) | Respond to of 206326 What is the "Trade Weighted Dollar Index" and why use it? The "Dollar Index " compares the value of the U.S. Dollar with only 6 currencies reflecting the percentage of U.S. trade with each country in 1973. This was before oil rose in price and trade with countries like Saudi Arabia became important, and before the creation of the Euro. Being simple, the "Dollar Index" is very easy to understand but does not provide an accurate view of Dollar valuation today, or even in 1973. en.wikipedia.org investopedia.com The "Trade Weighted Dollar Index " compares the value of the U.S. Dollar with 26 currencies, which account for 90% of U.S. imports and exports . The weight of each currency changes slowly to a small degree depending on the volume of U.S. trade with that country. en.wikipedia.org investopedia.com investopedia.com (Although the Euro did no become a currency until January 1999, the Fed used a basket of these currencies to extend the data in this series back four additional years to January 1995)Here's the type of distortion the Trade Weighted Dollar Index eliminates. Since 1985, China's trade with the world has greatly expanded (see U.S. imports and exports with China in the second chart below). Over this period of time China has bought an increasing amount of raw materials from Brazil, Australia and New Zealand which greatly inflated the value of these particular currencies. Very recently China has bought tremendously fewer raw materials from these nations, so their currencies have tumbled. These countries account for a very small percentage of U.S. trade, so these wild swings in value don't affect the "Trade Weighted Dollar Index" much at all. On the other hand, these currencies were not even included in the "Dollar Index". So the newer "Trade Weighted Dollar Index" is still better. When I was in Australia in 1997 the Australian Dollar cost $0.49 and both real estate and living prices seemed like they offered at sale prices. Seeing a bargain, I opened bank accounts and moved money to Australia. By July 2011 the Australian Dollar was no bargain at $1.10 and travel in Australia was pretty expensive. By September it had fallen a bit and I wired all my money back home. (see chart below) Being in Europe for a couple of months 14 months ago, I can assure you the Euro is still very overvalued against the U.S. Dollar. An investment tip: Any exchange gain on a foreign currency, not held by a business, is not taxable. Of course any interest earned is taxable in the U.S. with special tax forms and filings - but it was well worth my trouble. Australian Dollar research.stlouisfed.org Trade with China research.stlouisfed.org