When your baby is a little older, you can start adding pumping to your daily routine. While it's not necessary, it's comforting to have a little bit of a stash of milk built up before you return to work. Warning - be sure to read this page on smart use of your freezer stash!
You must file a tax return if your net earnings from self-employment were $400 or more. So consider this: you may be 36 years old, single and make less than $10,000 per year in regular employment income, but if you have a side business that nets you more than $400, you will need to file a federal tax return.
Filing after 65. A taxpayer usually don't have to file if her gross income is less than the annual limit set by the IRS. Filing status determines which limit applies. Of course, if you are due a refund because you had payroll taxes deducted or are entitled to a tax credit, you'll want to file anyway. The limit amounts change yearly because of inflation. For instance, these were the thresholds if you were 65 or older in 2014: Single filing status: $11,700.