The Bottom Line Tenancy by the entirety is a legal arrangement where a married couple shares equal ownership of a property, and ownership automatically passes to the survivor if their partner dies. This allows the survivor to avoid probate and protects the home from any claims against the other tenant.
To sum up: Joint tenants must receive their property interest simultaneously and from the same source with an equal share and equal rights to possess the entire property. By contrast, tenants in common can receive their interest at different times and from disparate legal sources and don't have to possess equal shares.
Utilizing a revocable trust is the best way for a married couple to take title. Titling property in your trust avoids probate upon the death of both the initial and surviving spouses and preserves the capital gains step up for the entire property on the first death.
For instance, if you're married, the most common way to title your home is Tenancy by the Entirety (TBE).
Tenants in common gives you more protections and you can specify in a deed of trust what you would want to happen in the event of relationship breakdown (eg if one of you has first dibs to buy the other out, or a time limit on doing so etc) which is definitely better to decide now whilst you still like each other!
To sum up: Joint tenants must receive their property interest simultaneously and from the same source with an equal share and equal rights to possess the entire property. By contrast, tenants in common can receive their interest at different times and from disparate legal sources and don't have to possess equal shares.