While domestic partners receive most of the benefits of marriage, several differences remain. These differences include, in part:
Couples seeking domestic partnership must have a common residence; this is not a requirement for marriage license applicants.[2]
Couples seeking domestic partnership must be 18 or older; minors can be married before the age of 18 with the consent of their parents.[2]
California permits married couples the option of confidential marriage; there is no equivalent institution for domestic partnerships. In confidential marriages, no witnesses are required and the marriage license is not a matter of public record.[2]
Married partners of state employees are eligible for the CalPERS long-term care insurance plan; domestic partners are not.[2][4][5] In April 2010, a lawsuit was filed challenging the exclusion of same-sex couples from the program.[6]
There is, at least according to one appellate ruling, no equivalent of the Putative Spouse Doctrine for domestic partnerships[2], in which one partner believes himself or herself to be married in good faith and is given legal rights as a result of his or her reliance upon this belief.
The process for terminating a domestic partnership is more complex and expensive than the divorce process. On May 17, 2009, a bill passed the California state assembly which, if passed into law, would streamline and equalize the processes.[7]
California's unemployment insurance program allows the someone about to be married to move to another city in order to marry that person and to begin to collect unemployment insurance immediately, this benefit is not provided to those just about to enter into a domestic partnership. In 2010 a bill was introduced in the California Aseembly which, if passed, will eliminate this discrepancy.[8][9] (Note that domestic partnership, unlike marriage, requires co-residency, as described earlier.)]