I'm married and filing jointly but made less than 5,000 in 2016. do I have to file taxes?

[Phillip1]

No. 

However, you may still want to file a return. If there was tax withheld on the income, you would be entitled to a refund. Even if you did not have tax withheld on your income, if the income was from wages or self-employment income, you may qualify for an earned income credit even if you do not have children.

Earned Income Credit Requirements