Fact Check: NDP Flat tax claims
NDP claim: “It’s not just that Mr. Kenney’s plan involves new costs for businesses and families, along with significant cuts to hospitals and schools, here’s the other thing: it also involves pretty steep tax breaks for the top one per cent — just the top one per cent — and that’s something that they’ve been consistent on... A $700-million gift to the top one per cent — most of whom aren’t even asking for it — just doesn’t make any sense, especially when you are promising to slash support for parents, seniors and kids to pay for it.” NDP Premier Rachel Notley, (Edmonton Chamber of Commerce, Jan. 24, 2019)
The facts: United Conservatives won't implement a flat tax.
Earlier this month, Jason Kenney ruled out a flat tax: "Because of the NDP’s fiscal train wreck, we do not have the fiscal room to reduce personal income tax rates at this time... We can’t cut every tax at the same time while we will be inheriting something like a $7-billion deficit and a $60-billion debt.” 
 Canadian Press, March 7, 2019: https://globalnews.ca/news/5032566/jason-kenney-ucp-personal-income-tax-rates/