Special Drawing Rights work by allowing member countries of the I.M.F. to cash the asset in for hard currency. Their value is based on a basket of international currencies and is reset every five years.
Each of the 190 countries that is a member of the I.M.F. gets an allotment of S.D.R.s based on their shares in the fund, which tracks with the size of a country’s economy. The new reserves would also be distributed under this formula, with the largest economic powers like the United States gaining the biggest tranche.
The drawing rights cannot be used to buy things on their own, but they can be traded for currencies that can. If two countries agree, they can trade their special drawing rights for cash, with the I.M.F. acting as a middleman to facilitate the trade.
That has prompted some criticism that the program will not work unless rich countries voluntarily transfer their holdings to poorer nations. To address some of those concerns, the I.M.F. is working to develop a new trust fund where rich countries can channel their excess S.D.R.s. The goal is to create a $100 billion pot of money that poor countries take loans from so that they can expand health care systems or address climate change in conjunction with existing I.M.F. programs.
The United States has previously indicated it will make available about one-fifth of its allocation, worth about $20 billion. At the urging of the United States, the I.M.F. is also working to create greater transparency around how the assets are being used so that it is clear that American adversaries are not benefiting from the proceeds.