The form looks like this: <a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/f8332.pdf">https://www.irs.gov/pub/irs-pdf/f8332.pdf</a>
The form is only valid for ONE tax year unless you specifically designated otherwise in PART II. So if you signed one for 2016, you would have had to signed a new form for 2017.
