"Walker was clearly aware of his tax obligations and he wilfully chose to ignore them. He had already been convicted of these types of offences once before so there was no way he didn't understand his responsibility to file returns and pay tax," Goggin said.
"By pocketing all of his income, he made a conscious decision he did not need to pay his fair share of tax while other honest New Zealand taxpayers did."
Walker worked as a self-employed carpet layer since 2004, charging clients for his labour and GST. In 2009 he was prosecuted by Inland Revenue for similar tax evasion offences, yet continued to offend.
Goggin said Walkers behaviour "completely undermines our tax system, which is based on voluntary compliance".
"While the majority of taxpayers do the right thing, there is a few like Walker who think they can hang on the coat tails of others and get away with not paying," he said.
"That money Walker should have paid would have gone towards vital Government services that we all rely on, such as hospitals, schools and welfare."