What Savings Bonds can do for you
Savings Bonds customer support
The Consumer Price Index for all Urban Consumers (CPI-U) measures the average change in prices you pay for certain goods and services.
Inflation happens when prices consistently rise, or to put it another way, when the value of money consistently falls.
The CPI-U is generally the best way to measure how you are affected by inflation.
For example, the CPI-U tells you how much you pay for a gallon of milk compared to five or 10 years ago.
Every six months, the Treasury Department adjusts interest on the I Bond according to the CPI-U.
This means, what you earn on your I Bond today will have the same buying power in 5, 10, or 30 years from now without inflation taking a chunk out of it.