This self-employed tax calculator will estimate your 2018 medicare and social security taxes based on your forecasted income, calculate the deduction that will lower your Adjusted Gross Income.
Plus, the calculator also has a built-in feature that will annualize income forecasts based on non-annual amounts.
And finally, included in the results will be a printer friendly, auto-completed 2018 Self-Employment Tax and Deduction Worksheet that can then be used to complete the 2018 Estimated Tax Worksheet (Schedule SE - Form 1040).
Disclaimer: This tool is for estimation purposes only. Be sure to consult with a qualified tax expert before deciding how much to set aside for self-employment taxes.