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 Question Thank you! Oops! Related Content Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement. How Much Home Can I Afford? With a few simple inputs you can estimate how much of a mortgage you may be able to obtain. A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals.