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 My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. What's My 2023 Tax Bracket? Check out this handy reference of updated ranges from the IRS in case your designated bracket has changed. What It Takes to Become an Accredited Investor What does it take to be an accredited investor? Explore the details, & the types of investments offered to those who qualify.