Eligibility for help paying for insurance is no longer determined by your gross (total) income. Under national health reform, Modified Adjusted Gross Income (MAGI) is now used instead. Under MAGI you can factor in business expenses that you write off for tax purposes (your Schedule C losses) when calculating your income. This means that many more people may qualify for help who might not have been able to get it in the past.
Most people can look at their adjusted gross income (line 8b on their Form 1040 income tax return) to see what their MAGI number will most likely be. This is an important change to understand for those who are self-employed or have combination income sources that include self-employment income.