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.
Report Abuse. You have to start filing tax return as soon as you have income. It does not matter what age you are. If a 13 year old child has money in hes/her saving account and earns interest on it, the parents should file tax return on behalf of that child. I think there is threshold of $600, if you earn less than that you don't have to file. But the point is the age does not matter at all.