how much do i need to open a cd 
each bank and credit union establishes a minimum deposit required to open a cd sometimes a bank will set a minimum deposit policy across all cds some offer rate tiers with a higher annual percentage yield apy if you have higher minimum deposits in theory a greater deposit will earn you a higher return in practice this doesn t always hold true many of the top 10 rates in each cd term can be achieved with modest investments of just 500 or 1 000 and the majority of top rates are available to anyone with at least 10 000 a 25 000 deposit is only occasionally required for a top rate the jumbo cds requiring a minimum deposit of 50 000 or 100 000 typically pay more but not always 