[Qiviut]

Here is a chart with the PEP thresholds (scroll down):

https://www.forbes.com/sites/kellyphillipserb/2017/09/14/projected-2018-tax-rates-brackets-standard-deduction-amounts-and-more/#5f50dc883e04

Forbes should be a reliable source.

[SoFloFreeper]

That Forbes article is from September. I doubt it is still valid.

[Manuel OKelley]

That article is pre 2017 tax bill and non applicable