 Income tax 2021-2022, self-employed health insurance deduction. Get ready to get refunds to the max, diving into income tax 2021-2022. Most of this information can be found in the form 1040 Instructions Tax Year 2021 found on the IRS website, irs.gov, irs.gov. Here's the income tax formula. We're looking at the adjustments to income which you might hear called the above the line deductions, the Schedule 1 deductions, the deductions for adjusted gross income, keeping them distinct in our mind from the other deductions which are the standard and itemized deductions. For example, also noting that the subtotal of income minus these adjustments to income, adjusted gross income is an important subtotal as well because when we think about phase outs due to income levels such as phase outs for expenses or deductions and for credits they're often...