Age expected to start contributing to retirement account Retirement Age Life Expectancy # years working # years retired Annual Retirement Income Desired Estate Desired for Heirs Rate of Return while working Rate of Return in retirement Current Retirement Savings 42,000.00 18,000.00 Savings needed at retirement Annual Contribution Required You need to update the yellow boxes for your own assumptions. The gray boxes have formulas in them and will automatically calculate. You will need to calculate the amounts in the green boxes using various Excel time-value-of-money formulas