Social Security as an Asset

Is Social Security a bond? Amateur planners love to compute a present value and list it on the balance sheet under “fixed income.” The arithmetic is easy enough: a $2,500 monthly benefit is $30,000 a year, and discounting a real annuity over a 20-year expectancy at a 2% real rate gives

which falls to about $446,000 at a 3% real discount rate and keeps moving with every assumption you touch — the first clue that the figure is doing less work than it appears to. The deeper problem is that it is a category error. You cannot sell your Social Security stream to pay for a medical emergency, you cannot borrow against it, and you cannot leave it to your children. Treating an illiquid government promise as a liquid bond proxy is a recipe for taking too much risk in the rest of your portfolio.

Instead, treat Social Security as a negative expense. In your cash flow model, it functions as a guaranteed floor that offsets your baseline spending, lowering your portfolio’s required annual draw and thereby reducing your sequence of returns risk.

To be conservative, account for political risk. As set out above, the retirement trust fund is projected to deplete its reserves in 2033, after which incoming FICA taxes cover roughly 77% of scheduled benefits. Model your future Social Security stream at that 77% haircut instead of face value. If your retirement plan still shows a safe withdrawal rate below 3.5% under the haircut, your balance sheet is bulletproof.