I'm self-employed, how much can I contribute to a retirement plan?

Compensation for a self-employed individual (sole proprietor or partner) is that person's earned income.* The starting point to determine the individual's earned income is the net profit amount from the Schedule C (or Schedule K-1 for a partnership). Use this calculator to determine your maximum contribution amount for the different types of small business retirement plans, such as Individual(k), SIMPLE IRA or SEP-IRA. *Earned Income = Net Profit – 1/2 of Self-Employment Tax – Contribution