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 The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. A Look at Whole Life Insurance Whole life insurance remains in force as long as you remain current with premiums. Here's how it works. Budgeting After a Divorce Divorce is the second most stressful time in a person's life. Here's some tips to get through it.