assuming each a/c is only in one name, yes you can make the transfer without tax consequences. spouses may make unlimited gifts to each other. no gift return is filed unless one of you is not a US citizen.
however, you do not seem to be simplifying your lives if one a/c is H and one a/c is W. transferring from one to another would mean the will or inheritance laws of the state would dictate who gets the a/c on the owner's death. I would think this is not what you want. so you both can contribute your a/c s to a new one with joint tenancy with the right of survivorship. if the owner dies intestate then state laws determine the outcome.
there are no tax consequences to this and the tax basis carries over.
