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 Budgeting After a Divorce Divorce is the second most stressful time in a person's life. Here's some tips to get through it. Retirement Is a Beginning Key questions to answer when you are considering retirement. Will Power Preparing for the eventual distribution of your assets may not sound enticing. But a will puts the power in your hands.