Good Question! Especially since we have seen these rates for so long!
Many of the interest rates we see from CD's and mortgage rates are affected by interest rates set by various central banks throughout the world. In the US, the Federal Reserve (Fed) sets these rates with the Federal Funds Rate, which is the rate that banks borrow money from the Fed. Currently, the Federal Funds Rate has a target of between 0.00% - 0.25%. Since these rates are so low, every other rate based off of it is low as well. It also means that when this rate goes up, you will see those interest rates for CDs increase as well.
You can read more about the Federal Funds Rate and it's historical rates by going to:
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