Under the party's tax proposal, more than 90% of New Zealanders would be better off, he said.
The campaign slogan is "For a Fair Go".
There would be less personal tax, less company tax, GST back at 12.5%, the double tax on savings would go, GST on rates would be removed along with removing secondary tax.
"It is not fair for a young person with two jobs stacking supermarket shelves all night to pay secondary tax while a very rich person with millions pays no tax.
"It's not fair that you pay tax on savings interest less than the inflation rate and then get slammed with tax on top of that. So inflation above 4%, interest less than 4% on which you pay 33% tax. Are you going forward or back? "
It was a vintage Winston Peters campaign launch, taking on those he labelled the "fat cats", those with special interests and the Government's "mates" in collapsed finance companies.
Some of those had made a fortune from the collapse of South Canterbury Finance because they got very high interest rates back by a government guarantee. Taxpayers were faced with a $1 billion bail-out of South Canterbury Finance.
"At the same time, other finance companies went to the wall and thousands of senior citizens lost billions of life savings."
Playing to his core constituency, Mr Peters asked the 700 people attending the launch whether they remembered the SuperGold Card with its discounts and free transport.
That card would become even more valuable with New Zealand First part of Parliament. That help would include paying doctor bills and power bills and some government charges like motor-vehicle relicensing.
There had been a lot of unfair cost-cutting in the past three years, he said.
"Like [the] elderly getting home-help hours slashed by district health boards - health boards doing the Government's dirty work.
"And we're not falling for super at 67 starting four elections from now."
Mr Peters reminded supporters that 95,000 people voted for New Zealand First at the last election, despite the "most vicious character assassination and lies" seen in any campaign the country had ever witnessed.
"Over 95,000 stayed loyal. And you know that with your help, we can more than double that on November 26."
