Retirees: This investment gives you a guaranteed 5% safe withdrawal rate

Treasury Inflation-Protected Securities, or TIPS, are yielding at or close to 20-year highs, a milestone with direct implications for retirement income planning. Because TIPS adjust their principal with inflation and pay a fixed real yield on top, buying and holding them to maturity locks in purchasing power in advance, a scarce certainty in today's markets.

The retiree relevance comes down to simple math. Higher real yields support higher withdrawal rates without eroding a portfolio's inflation-adjusted principal, which is what underpins headlines speaking of a 5% safe withdrawal rate. After years of negligible interest, a TIPS ladder can now play a meaningful role in covering basic spending needs, potentially reducing how much an investor must rely on equities for income.

What to watch: TIPS prices fall if real yields keep climbing, so those who must sell before maturity still face interest-rate risk. Also, while TIPS income is exempt from state and local tax, it is federally taxable. A ladder is best suited for matching known future expenses, not for blanket portfolio coverage. It is one constructive option, not a substitute for a broader financial plan.