No, a marginal tax rate of 22% means you pay $0.22 in tax any additional dollar you make. The US has a graduated income tax where you pay a higher rate as you make more money. It starts out at 10%, then goes to 12%, 22%, 24%, 32%, 35%, and 37% for singles. For a single person last year, you pay 10% of the first $9950, 12% of income between $9950 and $40525, 22% of income between $40525 and $86375, and so on.
Note that the taxable amount includes wages and interest and subtracts deductions (it gets more complicated, but that's the rough idea). So if you made $72572 in wages, plus $150 in interest, and used the standard deduction of $12550, your taxable amount is $60172.
