It's worth noting that the tax credit offsets income from self-employment if it's a pass-through organization, and many people reading this should be aware of this (since unlike OP, most people draw a salary from their SE business).
So to those who operate small LLC's or sole props, or draw salary from an S-corp, self-employment income goes on line 12 of the 1040 (
https://www.irs.gov/pub/irs-pdf/f1040.pdf) and that ends up on line 47, which is the number the credit is subtracted from. The credit then goes on line 54. This is all in the 8936:
https://www.irs.gov/pub/irs-pdf/f8936.pdf
Self employment
tax is line 57, which is after line 54, isn't affected by the credit. But self employment tax is not self employment
income. Income is money coming in, tax is money going out.
Just to add an example, and I'm sorry as I'm cross-posting this comment, but this could save people $7500
If you earn $100,000 in self-employment (net) income as a passthrough (single member LLC, sole prop, e.g.) you will incur $15,130 in SE taxes. $100,000 goes on Schedule C, which then goes on Line 12 of 1040. That contributes to AGI, and to taxable income, and therefore final tax (line 47). Let's say tax on $100,000 minus deductions is $8,500. You then put $7,500 on line 54, subtract it from $8,500 to get $1,000. That's your income tax liability. Then you add the $15,130 tax, which again is an outflow, not income. So you would owe $1,000+$15,130. This is less than the $8,500+$15,130 you'd pay without the tax credit.