Inflation & Retirement Estimate how much income may be needed at retirement to maintain your standard of living. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Related Content How Stocks Work Understanding how a stock works is key to understanding your investments. Leaving Your Lasting Legacy Want to do more with your wealth? You might want to consider creating a charitable foundation. How much monthly income do you need to retire? Don't think of retirement in just a number, think of it in terms of monthly income.