Question: what is a $20 bill from 1981 worth?
Answer: Purchasing Power of $20 from 1981 is $53.80 in 2017. Inflation is the key to change in value of any currency or asset for that matter. So, let's calculate Inflation and determine its value. Also, The U.S. dollar experienced an average inflation rate of 2.79% per year between 1981 and 2017.