You got a 1099-misc do you have to file tax return?

Yes you would be required to file a 1040 income tax return.

A self employed taxpayer would be required to file an income tax return if business operation had a net profit of 400 and pay the social security and Medicare taxes that would be due plus any income tax that may be due after adding the net profit to all other gross income on the 1040 tax form and the amounts would be subject to income tax at the marginal tax rates.