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 Tax Rules When Selling Your Home The tax rules governing profits you realize from the sale of your home have changed in recent years. Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next. The Economic Journey of Your Morning Coffee Few contemplate the complex journey that brought their coffee from farm to kitchen table.