Proposed changes to Tasmania's marriage laws removing the need for transgender people to divorce their partners if they want their birth certificates changed do not go far enough, a transgender lobby group says.

The Tasmanian Government has tabled amendments to legislation that would bring state law in line with national same-sex marriage laws.

Attorney-General Elise Archer said they would ensure "same-sex married couples will be treated equally in Tasmania in a range of areas of law".

Lobby group Transforming Tasmania has welcomed the scrapping of the requirement for transgender people to divorce if they want their birth certificates changed to reflect their gender identity.

But the bill did not remove the requirement for transgender people to undergo surgery if they want their gender identity officially recognised.

Transgender woman and Transforming Tasmania spokeswoman Martine Delaney said the Government had "refused to address the full gamut of inequalities against transgender, intersex and gender diverse Tasmanians".

She said there was no reason why the bill could not have removed the surgery requirement.

"The principle underpinning that decision to remove the forced divorce and the surgery requirement, it's the same principle, they lead to the same result for transgender and gender diverse Tasmanians," she said.

"It makes no sense to do half the job."

"I find it quite insulting — I have spent time over the last 14 years lobbying any number of attorney-generals from both sides of parliament all of whom have said 'yes, this is something we need to deal with', and all of whom have found every possible way under the sun of avoiding dealing with it.

"To have this happen again is totally disappointing and I cannot for the life of me understand why."

Government 'mindful' of broader issues

The Government has asked the Tasmanian Law Reform Institute to examine potential reform to the state's laws governing sex and gender.

Martine Delaney says the proposed laws are only doing half the job. ( ABC News: Rhiannon Shine )

"We are mindful of calls for broader reforms on legislative responses to sex and gender in Tasmania to be wrapped up in this legislation, including advocacy calling for the removal of gender markers on birth certificates, as well as other policy change," Ms Archer said.

"We acknowledge these issues are of significance to many in our community, but also strongly believe that such reforms deserve a thorough consideration and consultation."

But Ms Delaney was critical of the move.

"The former anti-discrimination commissioner, Robin Banks, conducted a [full] inquiry three years ago, and yet another will unnecessarily delay justice for a group of Tasmanians who have already waited for too long," she said.

Ms Delaney said she would have liked to see a united response on removing the surgical requirement.

"Sadly that's obviously not going to be the case," she said.

Labor said it supported changing that aspect of the law.

"It is wrong that parliamentarians can make decisions that force people to have surgery that is unnecessary, often unwanted, unaffordable and in some cases dangerous and even life threatening," shadow attorney-general Ella Haddad said.

The Opposition is working on amendments to the bill.