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 4 Questions Adult Children Should Ask Their Parents Talking with your parents about estate planning can help you avoid troublesome legal and financial problems later. Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.