Unless your estate is worth more than $3.5 million, there will be no federal estate taxes on anything your heirs receive from you. I don't practice in Washington, so I don't know if there are state inheritance or estate taxes - you should ask a Washington estate planning lawyer or tax professional about that.
It is usually a HUGE mistake to a beneficiary's name to a CD or real estate (or anything else, for that matter). If the beneficiary is sued and loses, the winner could "satisfy the judgment" by taking what you thought was YOUR CD or real estate.
If you want your beneficiaries to avoid probate, you can name them as "pay on death" (POD) beneficiaries on the CD. That way, they have no rights to the CDs until you die - and the CDs do not go through probate.
This information is not intended to substitute for professional legal advice and does not create an attorney-client relationship. You should accept legal advice only from a licensed legal professional with whom you have an attorney-client relationship.