"Tour-Makers are delighted to announce a new offer in ticketing for the show - 9.4 per cent cheaper tickets for all those who identify as women, to reflect the gender pay gap.
"Kate Sheppard didn't fight to win women the right to vote so that well over a hundred years later we'd still be fighting for equality. A gender pay gap of 9.4 per cent is an improvement but it's not enough."
Performing Arts Network of NZ marketing manager Stephanie Richardson came up with the idea to promote the show to play with the idea of equality.
However she wanted to stress that the discount was open to anyone who used the promocode rockthevote and was more about the meaning than exclusively giving women a perk.
"The offer reflects the fact there is a differentiation in pay for women in New Zealand, but the offer is actually available to anybody.
"Our intention is definitely, definitely not to exclude anybody. That's not the spirit of the show."
A Human Rights Commission spokeswoman said a ticket price drop for one gender could be considered unlawful under the Human Rights Act.
"We appreciate that for this particular event, which celebrates Kate Sheppard, there is an interest in using it to highlight the gender pay gap in New Zealand. Nevertheless, people may potentially have grounds to make a complaint to the Human Rights Commission if they feel they have been affected by the promotion."
The show was originally commissioned by the Christchurch Arts Festival and has been described as "a kick-ass punk rock musical full of infectious tunes that is unafraid to have fun, but just as unafraid to bring intelligence and insight to this powerful and important moment in history".