There are strict rules about who can be a support carer, paid $64.50 for 24 hours' relief.
Parents, including step or adoptive parents, are banned as well as anyone who lives in the same house as the person needing care or the full-time carer.
Meliko Tupou is the full-time carer for a close family member with a disability, and daughter Akosita Tupou is the support carer.
But investigators for the Ministry of Health allege that Akosita Tupou, 32, lived in the same Meadowbank house as her mother, father and the family member they care for, in breach of the rules.
The trio have been jointly charged with dishonestly using a document to obtain a pecuniary advantage, a total of more than $33,000 over 10 years.
Sione Tupou is a health adviser for the community child health and disability services for the Auckland DHB, as well as acting in other health advisory roles.
A spokeswoman for the Auckland DHB declined to comment.