Your numbers
Net profit from the business ($)
Schedule C line 31, after expenses.
Health premiums you paid ($)
Medical, dental, vision for you, spouse and dependents. Count only months you were not eligible for an employer-subsidized plan.
Retirement contributions for yourself ($)
SEP, SIMPLE or solo 401(k) contributions made for yourself from this business.
Your federal marginal rate (%, optional)
Your own assumption, used only for the rough saving.
Calculate the deduction
Your result