First, for appreciated assets, such as stocks and real estate, there are tax disadvantages to receiving assets from a joint tenant. While inheriting from a will or trust at death eliminates taxable capital gains for the survivor, joint tenancy only eliminates one-half of those capital gains since you are only “inheriting” one-half of the property. Secondly, you may be exposed to the debts and liabilities of your partner. Thirdly, you lose control over where the assets go after your surviving partner dies. Perhaps you may want to provide for your partner for life, but state where the unused assets will go after he or she passes. Finally, once you make your assets joint with your partner, you may have more difficulty in getting those assets back in the event of a divorce or break up in the relationship.