Complicated name-change issues. I am changing my last name, but not due to a legal marriage. Can I get my name changed now, but start using it for everything later?
My (same-sex) partner
and I live in Texas; thus, we can't get legally married. However, we share finances (including several joint accounts) and have lived at the same address for over two years, as evidenced by our driver's licenses and growing amount of mass mailings. Now we are "lawyering up" in order to make a will, take care of powers of attorney, and do other assorted health/property-related paperwork.
We are having a wedding in October; however, all of this official stuff will be done before then. I want to change my name by adding her last name after my current last name, but it would be best to do it now and have that name be correct on all the paperwork we are filing, and I need to apply for a passport, and I would want that to be in the new last name, too.
So: Can I change my last name legally right now, use it for this paperwork and maybe even the passport, and then start using it in October? Or can I go ahead and change it everywhere legally now, and just tell people in October? If my last name is still part of my name (I want to go by MyFirst MyLast HerLast), I shouldn't have any problems depositing checks or the like, right?