The purchase of one membership can be used per household budget. Spouses and engaged couples can use a single membership together!
Keep in mind, however, that each membership only includes online access to one email address. Therefore, you will have to share the sign-in information to access the online tools.
This means that you and your spouse will share the same Ramsey Solutions ID, but you should not share your account information with anyone else. Each family going through FPU should have their own Ramsey Solutions ID.