"You have a seemingly entrenched sense of entitlement in regards to the New Zealand government and to taxpayers' funds, and it's only recently you realised it's 'not my money'," Judge Fraser read from the report.
He refused to disclose in open court why she had developed that attitude but referenced Taufa's mental-health issues, which had been documented in a number of reports.
However, he struggled to find a link between her psychological hardship and her offending.
Prosecutor Seung Youn said it was "one of the most serious cases the ministry has had" but Ms Lowe said there was scope for a sentence of home detention and community work.
Judge Fraser disagreed, highlighting the scale of the offending and the breach of trust involved.
"The $300,000 you gained could have impacted dramatically on others who were worthy of benefits but you have deprived taxpayers, who work hard to pay their taxes, of a significant sum," he said.
"Benefit fraud is easy and the system relies on honesty, and in this case there was an egregious and flagrant breach of trust."
Ms Lowe made an 11th-hour bid for name suppression for Taufa but Judge Fraser said any suggestion of extreme hardship was not made out.
BENEFIT-FRAUD PROSECUTIONS
2013-2014
• Total prosecutions: 893
• Successful prosecutions: 868
• Total debt prosecuted: $31,078,245
2012-2013
• Total prosecutions: 957
• Successful prosecutions: 906
• Total debt prosecuted: $32,619,374
2011-2012
• Total prosecutions: 878
• Successful prosecutions: 838
• Total debt prosecuted: $22,503,511
(Source: Ministry of Social Development)