self-employment earnings

self-employment income

I'm contemplating leaving full-time employment and taking a contractor job. That would be paid as 1099 wages. I see that ESP+ has a tab for self-employment income which is where I assume I'd record those earnings.

The SS section refers to copying income from the employee tab of the earnings section. But won't I have to pay into SS from my 1099 income? Is that income not reflected in SS history? If not automatically, how do I account for the fact I'd be paying self-employment payroll taxes?