What Are the Breakdowns for Different Tax Brackets?

[kathleenh]

What are the percentages taxed on different levels of income? E.g., if I earn $100,000, I’m in x bracket for y%.
If I earn $30,000, I’m in x bracket for y%.

[NancyDrew]

There are seven tax brackets, with the lowest tax bracket being subject to a 10% marginal tax rate and the highest being subject to a 37% marginal tax rate.  Your marginal tax rate depends on your taxable income within the brackets.  The tax bracket income thresholds also depend on your filing status. Here is a chart from a great article, What is a Tax Bracket? ,which explains the tax brackets in the chart in more depth: