Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Insurance Needs Assessment: When You're Newly Married Marriage changes everything, including your insurance needs. Saving Early & Letting Time Work For You The earlier you start pursuing financial goals, the better your outcome may be. Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one.