Get your taxes done using TurboTax

No it doesn't work that way.  It's not a flat 22% on the total.  It is only 22% on the amount over the previous tax bracket.  Here's the Tax Table.  Page 9 shows 55,450 - 55,500 = $6,553 for Head of Household.  

https://www.irs.gov/pub/irs-pdf/i1040tt.pdf