I worked as a contractor and earned $4400 in 2016 and used turboTax Selfemployed to pay quarterly taxes with... What do I use to include this into my tax return for 2016

To enter the amounts and dates of your estimated tax payments in TurboTax Self-Employed:

1. Log into TurboTax and open your return.
2. Type "estimated tax payments" into the Search box, then select Jump to estimated tax payments.

You should be able to make your entries here.