Inflation Breakeven Rate: What It Really Tells You About TIPS
Mar. 06, 2018 6:16 AM ETBIL, DFVL, DFVS...8 Comments5 LikesSummaryInflation breakeven rates have been rising fairly steadily since February 2016 and now are in the 'neutral' zone of value.When inflation breakevens rise, TIPS outperform nominal Treasurys.The lower the breakeven rate, the higher the 'margin of safety' for TIPS investors versus nominal Treasurys.When I write about auctions of Treasury Inflation-Protected Securities, I always reference the new issue's 'inflation breakeven rate,' the key measure of 'expected' future inflation. But there's a lot of confusion about what this measure means and how an investor should interpret it.First of all, what is it? The inflation breakeven rate results from a simple calculation: Nominal yield minus real yield. For example, the 10-year inflation breakeven rate is calculated by subtracting the real (after inflation) yield of a 10-year TIPS from the nominal yield of a traditional 10-year Treasury. Right now, that calculation looks like this:2.86% (nominal yield) - 0.74% (real yield) = 2.12%This tells you that investors are 'expecting' inflation to average 2.12% over the next 10 years. It is a market-based calculation. Think inflation will be higher than 2.12%? Buy TIPS. Think inflation will be lower than 2.12%? Buy a nominal Treasury.Does it accurately predict future inflation? Not necessarily. The inflation breakeven rate is not a forecast; it is a snapshot of today's inflation expectations. As it turns out, what investors expect often turns out to be wrong. I discussed this in detail in a July article: "Does TIPS' Inflation Break-Even Rate Accurately Predict Future Inflation?" Here's what I found:(I)n the 11 years of TIPS auctions with completed 10-year maturities, inflation was underestimated in seven of those years, and overestimated in four of those years. The more recent trend - because of several years of super low inflation - has been to overestimate inflation.When I wrote that July article, the 10-year inflation breakeven rate stood at 1.73% and today it is 39 basis points higher at 2.12%. Investors were either wrong in July, or they are wrong today. The inflation breakeven rate is a measure of sentiment. It should not be considered an accurate forecast.So what can the breakeven rate tell us? The inflation breakeven rate is a very accurate measure of the relative value of TIPS versus nominal Treasurys, and a possible predictor of the relative future performance of the two asset classes. When the inflation breakeven rate drops to very low levels, as it did in recent years, TIPS are 'cheap' versus nominal Treasurys. When it rises to high levels, TIPS are 'expensive' versus nominal Treasurys.Historically, when the 10-year TIPS breakeven falls below 2.0%, TIPS are cheap. When it rises above 2.5%, TIPS are expensive. The range from 2.0% to 2.5% is 'neutral,' neither cheap nor expensive. However, recent years of very low inflation may have thrown this general rule out of whack.

The trend movement of the inflation breakeven rate is directly related to the price trend of TIPS versus nominal Treasurys. To show this correlation, I analyzed how periods of rising and falling 10-year breakevens affected the asset value of two ETF funds: the iShares TIPS Bond ETF (NYSEARCA:TIP) (which holds all maturities of TIPS) and the iShares 7-10 Year Treasury Bond ETF (NASDAQ:IEF) (which holds 7- to 10-year Treasuries). I chose these two funds because they have very similar durations, making them equally sensitive to interest rate changes.Falling inflation expectationsFirst, let's look at two periods of falling inflation expectations. The first is from April to September 2011, when then 10-year inflation breakeven rate fell dramatically from 2.63% to 1.74%. Here is the trend:








