Couples have been able to formalise their relationships since 2003 by signing a deed at the registry of births, deaths and marriages.
But from November the first, an administrative change means marriage celebrants can preside over the ceremony and formalise the relationship deed.
Tasmania’s Gay and Lesbian Rights Group is expecting to see a rise in registrations.
Spokesman Rodney Croome says the move sets a national precedent.
That means they’ll be able to declare and affirm their relationship in front of a marriage celebrant and their family members and their friends, which is very important for some couples to be able to publicly make those vows and form now on that will be possible."
"Some couples have held off until they were able to go through this kind of public affirmation," he said.
Attorney-General Lara Giddings says having marriage celebrants at the ceremonies will provide much-needed dignity to those registering significant relationships.
"In the past what they did was turn up to the registry office as you do to register your dog, you would turn up to register your relationship.
Now quite rightly people felt that that did not give their relationship the dignity they wanted it to have," she said.