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. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Retirement and Quality of Life Asking the right questions about how you can save money for retirement without sacrificing your quality of life. Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.