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 Avoiding Cognitive Decline Try these activities to keep your brain sharp. Understanding Homeowners Insurance Purchasing homeowners insurance is critical for protecting your home. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter.