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 Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. Understanding the Alternate Valuation Date Executors can value the estate on the date of death, or on its six-month anniversary —the “Alternate Valuation Date." Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process.