As Critter said, your income is too high.
- It is first calculated using your "earned income" (wages and self employment income).
- Then it is calculated again using your Adjusted Gross Income (AGI).
- Your actual credit is then the lower of those two calculations.
Here is the current draft 2017 EIC table, showing that income over $39,600 (with one child) results in no EIC.
https://www.irs.gov/pub/irs-dft/i1040gi--dft.pdf#page=69
