The Labor Department released July numbers for consumer, producer, and import price inflation this week. The results were troubling. Consumer prices increased 3.6% compared to last year, producer prices increased by 7.6%, and import prices increased by a whopping 14%. Even the Federal Reserveโ€™s preferred measure of inflation (core consumer price inflation, known as core CPI, which is inflation minus food and fuel) came in ahead of expectations. Core CPI increased by 1.8% over the last year. The Fedโ€™s unspoken growth target for core CPI is 2%.

Because the Fed still believes inflation is contained, Mr. Bernanke recently pledged to hold interest rates near zero for another two years. The Fedโ€™s rate commitment has pushed short- and intermediate-term Treasury yields below 1%. A five-year T-note now yields 0.92%โ€”after adjusting for inflation of 3.6%, investors are losing money. The only Treasury security that even comes close to covering inflation is the long bond. Today, a 30-year Treasury security will pay you 3.57% in interest.

Should savers and retired investors take the Fedโ€™s bait and invest in long bonds? Not when you have a Fed chairman with a money-printing habit and prominent economists such as Ken Rogoff, the former chief economist of the International Monetary Fund, calling for a โ€œsustained burst of moderate inflation, say, 4โ€“6% for several years.โ€

Rogoffโ€™s prescribed dosage of inflation would swiftly decimate a portfolio of long bonds. In the chart below, we show the buying power (as a percentage of initial value) of a hypothetical retired investorโ€™s portfolio of 30-year Treasuries (at a 3.57% yield). We assume our retired investor draws 4% of the initial principal, adjusted for inflation annually.

In blue you can see the effects of Rogoffโ€™s plan of 6% inflation, and in red are the effects of the Fedโ€™s implied inflation target of 2%. In green is a zero-inflation environment.

Both the Fedโ€™s and Rogoffโ€™s plans offer little protection for investorsโ€™ wealth, but Rogoffโ€™s plan strips retireesโ€™ buying power at a rapid pace. After five years, Rogoffโ€™s plan cuts the buying power of a portfolio of long bonds in half, and after 20 years the portfolio is depleted.

If you are in need of income, long bonds arenโ€™t the place to look. In our monthly strategy reports, we help subscribers craft portfolios that offer a steady stream of income without the risk of a portfolio of long Treasuries.

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