A new 'Parent Boost' visa will make it easier for some migrants' parents to visit the country.

From September, it will grant parents of citizens multi-entry access for five years, with the opportunity for renewal once - meaning they could hold the visa for 10 years.

Applicants will also need to meet specific health, income, and insurance requirements.

Act Party Immigration Spokesperson Parmjeet Parmar told Ryan Bridge it's hard to know how many people will apply.

She says it could be between two and ten thousand.