Schofield said income still played an important role in determining overall well-being but being able to live within your means also played a big part in making people feel happy.
"...the research is showing effective money management, whether you're earning a little or a lot, can influence high levels of well-being."
Adults without children over the age of 55 and couples with older children were the next most likely to have a high level of well-being at 33.6 per cent and 30.1 per cent.
While young singles and sole parents had the lowest levels of well-being with less than half of all sole parents reporting having enough income to meet their needs.
The research also found New Zealanders rate lowly compared to Europeans when it comes to having enough to live off or live comfortably.
A 2012 European Social Survey showed over 90 per cent of people living in Denmark and Norway were coping or living comfortably compared to 67.3 per cent of Kiwis.
New Zealand ranked 19th out of 30 countries.
The Sovereign Wellbeing Index was based on online research from 10,012 adults surveyed about their well-being health and lifestyle last year.
Who has the highest level of wellbeing?
• Adults over 65 - 39.7 per cent
• Adults without children aged over 55 - 33.6 per cent
• Couples with older children - 30.1 per cent
See the full report here: