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 Disability and Your Finances In the event of an unforeseen accident or illness, disability insurance may be a good way to protect your income and savings. And the Executor Is The right executor may help ensure the distribution of your assets is done with as little upheaval as possible. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.