What is a CD. And does it benefit .. in terms of interest. and why is the W-9 needed ?

what is the best interest rate given by banks ? what is the taxable amount ?

What is a CD. And does it benefit .. in terms of interest. and why is the W-9 needed ?child tax credit

A CD is a type of savings. Each CD has a term, usually one or two years, sometimes five years or more. If you withdraw the CD before the term is up, you usually have to pay a penalty fee. The rates for CD%26#039;s vary depending on length of term and amount of investment, usually around 2.5% to 5% or sometimes more, if you%26#039;re lucky. You need the W-9 because the interest earned on the CD is taxable. The interest is taxable.