- Business type
- Please select either in sole proprietorship or corporation. The calculations for your contributions are slightly different depending on the business type.
- Net income
- For sole proprietors, this is your net income from your tax Schedule C or C-EZ. For single owner corporations with no employees other than yourself or your spouse, this is your w-2 wages.
- Current age
- Your current age. For SIMPLE and Individual 401(k) plans you are able to make additional contributions, known as 'Catchup Contributions' if you are age 50 or older by the end of the year.