TIPS vs Treasuries now hinges on one number: 2.36%. That is the 10-year breakeven inflation rate on September 11, 2026, per the St. Louis Fed. After the 10-year Treasury yield topped 5% on September 14 — its first time since October 2023 — nominal notes pay 4.97% and 10-year TIPS pay 2.60% real. TIPS win only if CPI averages above 2.36% for a decade. August CPI ran 3.4%.
What happened to Treasury yields on September 14, 2026?
The 10-year Treasury yield breached 5% intraday on Monday, September 14, 2026, the first time since October 2023. Treasury’s official par yield curve closed the day at 4.97%, up from 4.95% on September 10. The 30-year closed at 5.34%.
Three forces pushed it there. Brent crude climbed to $108 a barrel. The Bureau of Labor Statistics released August CPI on September 11: up 0.4% for the month, 3.4% over 12 months, with core at 2.4%.
And issuance is heavy — governments and corporations are funding spending and AI infrastructure into a market that already has too much paper.
The Federal Reserve’s own calendar puts the FOMC in session September 15–16, with a Summary of Economic Projections attached. Goldman Sachs economist David Mericle wrote that the August report “pushed market pricing of a hike to nearly 90%.” On September 8, CME FedWatch had that probability at roughly 56%.
That repricing is the entire reason the TIPS-versus-nominal question is live this week.
How does the TIPS vs Treasuries breakeven actually work?
The breakeven is the inflation rate at which TIPS and nominal Treasuries deliver identical returns. Subtract the real yield on an inflation-protected note from the nominal yield of the same maturity. Above that rate, TIPS pay more. Below it, the nominal note wins.
Treasury publishes both curves daily. On September 11, 2026, the real 10-year sat at 2.60% and the nominal 10-year at 4.96%. The gap: 2.36%.
The Federal Reserve Bank of St. Louis publishes the same figure as series T10YIE. It printed 2.36% on September 11, down from 2.40% on September 10.
The number that should bother you
Headline CPI is running at 3.4% right now. The bond market is pricing 2.36% average inflation for the next ten years.
That is a gap of more than a full percentage point, and it is a bet — that the current print is transitory, that oil at $108 does not stick, and that the Fed hikes hard enough to pull inflation back toward target.
Buying TIPS at a 2.36% breakeven is a wager that the market is too optimistic. Buying nominals is a wager that it is right.
Real yields are at levels most investors have never traded
The 10-year real yield moved from 2.43% on September 8 to 2.60% on September 11 — 17 basis points in four sessions. The 30-year real yield hit 3.07%. The 5-year real reached 2.38%.
Independent TIPS tracker TipsWatch, writing on September 13, called a secondary-market real yield near 2.59% “rare air,” noting it would rank among the highest real yields at auction for this maturity in two decades. A $19 billion reopening of the 10-year TIPS (CUSIP 91282CRE3, coupon 2.375%) sits on this week’s calendar.
Which TIPS ETF is cheapest: TIP vs SCHP?
SCHP, at a 0.03% expense ratio, costs one-sixth of TIP’s 0.18% for near-identical exposure. Both track broad US TIPS. TIP reports 6.30 years effective duration; SCHP reports 6.4 years. On fee alone, SCHP wins outright — but TIP’s bid-ask spread is four times tighter, which matters if you trade.
| Fund | Expense ratio | Net assets | Duration | Avg. maturity | Median bid-ask spread |
|---|---|---|---|---|---|
| SCHP (Schwab US TIPS) | 0.03% | $15.98B (9/11/26) | 6.4 yrs (8/31/26) | 7.19 yrs | 0.04% |
| TIP (iShares TIPS Bond) | 0.18% | $14.72B (9/11/26) | 6.30 yrs (9/10/26) | 7.13 yrs | 0.01% |
| VTIP (Vanguard Short-Term TIPS) | 0.03% | $20.5B | Short-term mandate | 0–5 yr index | Not disclosed on profile page |
| IEF (iShares 7–10 Yr Treasury, nominal) | 0.15% | $41.73B (9/11/26) | 6.92 yrs (9/11/26) | 8.47 yrs | 0.01% |
What a 15 basis point fee gap costs on $10,000
Here is the arithmetic, using IEF’s average yield to maturity of 4.93% (as of September 11, 2026) as the gross growth assumption.
- Flat balance, one year: SCHP charges $3.00. TIP charges $18.00. Gap: $15.00.
- Trading cost, round trip: SCHP’s 0.04% median spread costs roughly $4.00 in and out. TIP’s 0.01% costs about $1.00. SCHP is $3.00 worse.
- Payback: The $3.00 trading disadvantage is erased by the $15.00 annual fee saving in under three months.
- Ten years, compounded: $10,000 growing at 4.93% less 0.03% reaches $16,134. At 4.93% less 0.18% it reaches $15,905. Difference: $229.
That $229 is 2.3% of the original position, surrendered for no difference in exposure. On $100,000 it is $2,290.
Why does TIP show a negative 30-day SEC yield?
Because the SEC yield formula does not count inflation accruals. TIP posted a 30-day SEC yield of −0.90% on September 10, 2026. SCHP posted −0.92%. Neither fund is losing money. The metric simply excludes the principal adjustment that is the entire point of a TIPS.
This is the single most dangerous number in the inflation-protected bond category.
Screen for yield on a brokerage platform and TIPS funds sort to the bottom of the list, below money market funds, below everything. An investor comparing TIP’s −0.90% to IEF’s 4.63% SEC yield and concluding that nominals pay 5.5 points more has been misled by an accounting convention.
The number to use instead is real yield. TIP reported 2.35% real on September 10, 2026. That is what the portfolio earns above whatever CPI does.
The fund-level comparison is not apples to apples
IEF’s average yield to maturity was 4.93% on September 11 against TIP’s 2.35% real yield — an implied fund-level breakeven near 2.58%, wider than the 2.36% on the curve.
The difference is maturity mix. IEF carries 8.47 years weighted average maturity against TIP’s 7.13. You are not comparing the same point on the curve, and anyone quoting a clean fund-level breakeven is glossing over that.
Is TIPS vs Treasuries the right comparison for your goal?
It depends on one thing: whether your liability is nominal or inflation-linked. A fixed mortgage payment is a nominal liability — a nominal bond matches it. Retirement spending twenty years out is an inflation-linked liability, and only TIPS match that.
| Investor situation | Measurable case for | Main drawback |
|---|---|---|
| Wants lowest cost broad TIPS exposure | SCHP at 0.03% — $3 a year per $10,000 | 0.04% spread, worst of the four |
| Trades the position frequently | TIP at a 0.01% median spread | 0.18% fee, six times SCHP’s |
| Wants inflation protection with less rate risk | VTIP at 0.03%, short-maturity mandate | Less protection against long-horizon inflation |
| Believes 2.36% breakeven is too high | IEF’s 4.93% yield to maturity locks a nominal rate | Zero protection if CPI stays near 3.4% |
| Holding to maturity, wants no fund fee at all | Buying the TIPS directly at auction — no expense ratio | Taxable “phantom income” on accruals; no automatic reinvestment |
What the Fed decision on September 16 changes
A hike is primarily a front-end event, but it moves breakevens too. If the FOMC delivers on September 16 and the market reads it as credible inflation-fighting, breakevens typically compress — which is bad for TIPS relative to nominals at the moment of the move, even though both are already priced for it.
Strategist Ed Yardeni put it directly: a move this week “would help restore the Fed’s inflation-fighting credibility and might ease some of the upward pressure on long-term yields.”
The risk runs the other way if they hold. A Fed that skips with CPI at 3.4% and oil at $108 invites the market to reprice inflation expectations upward, and breakevens widen.
Either way, both TIPS and nominal Treasuries carry the same duration risk. Neither protects you from rates rising further. TIP’s 6.30-year duration means roughly a 6.3% price decline for each additional percentage point of real yield.
TIPS vs Treasuries FAQ
What is the 10-year breakeven inflation rate right now?
2.36% as of September 11, 2026, per the St. Louis Fed’s T10YIE series. It was 2.40% on September 10 and 2.37% on September 8.
Do TIPS beat Treasuries if inflation stays at 3.4%?
Mathematically, yes — if CPI averages 3.4% for ten years, TIPS bought at a 2.36% breakeven outperform. That is a large “if” over a decade.
Why is the TIPS ETF yield negative?
The 30-day SEC yield excludes inflation principal accruals. TIP showed −0.90% and SCHP −0.92% on September 10, 2026. Use real yield instead — TIP’s was 2.35%.
Is SCHP or TIP better?
On fee, SCHP: 0.03% versus 0.18%, a $229 difference on $10,000 over ten years at a 4.93% growth assumption. On tradability, TIP: a 0.01% median spread versus SCHP’s 0.04%.
Can I buy TIPS directly instead of an ETF?
Yes, at Treasury auction or in the secondary market. There is no expense ratio. The cost is complexity: inflation accruals are taxable in the year they accrue even though you receive no cash, and you manage reinvestment yourself.
What is the current real yield on 10-year TIPS?
2.60% on September 11, 2026, per Treasury’s daily real yield curve. The 5-year real was 2.38% and the 30-year 3.07%.
Does a Fed rate hike help or hurt TIPS?
A credible hike tends to compress breakevens, which hurts TIPS relative to nominal Treasuries. It does not remove duration risk from either.
The bottom line
The measurable question has a measurable answer. At a 2.36% breakeven with headline CPI at 3.4%, the market is pricing a full point of disinflation that has not yet appeared in the data. TIPS are not expensive here on any historical read of real yields — a 2.60% 10-year real yield is among the best on offer in two decades.
The product question is simpler still. SCHP at 0.03% and TIP at 0.18% own nearly the same portfolio with nearly the same duration. Paying six times the fee buys you a tighter spread that only matters if you trade — and for a buy-and-hold position, it does not.
What it depends on: your holding period and whether your future spending is indexed. Short holding period and frequent trades, the spread dominates and TIP’s 0.01% earns its fee. Multi-year hold against inflation-linked spending, the 15 basis points compound against you and the cheaper fund wins by $229 per $10,000 per decade.
The skeptical note: both sides of this trade carry identical interest rate risk, and the marketing around inflation protection tends to obscure that. A 6.3-year duration fund loses roughly 6.3% per percentage point of real yield increase, inflation-protected or not.
Related reading on Wealth Engine: Fed Rate Hike Bond ETFs: What 25 Basis Points Costs You, Gold ETF Fees: GLD vs IAU vs GLDM After an $18B Month, and DeFi Yield vs Treasury Bills: What the $75M Tectonic Exploit Costs.
This article is journalism, not investment advice. Do your own research before investing.
Sources
- US Treasury — Daily Treasury Par Yield Curve Rates, September 2026
- US Treasury — Daily Treasury Par Real Yield Curve Rates, September 2026
- Federal Reserve Bank of St. Louis — 10-Year Breakeven Inflation Rate (T10YIE)
- Bureau of Labor Statistics — Consumer Price Index, August 2026 (released September 11, 2026)
- Federal Reserve — FOMC Meeting Calendar 2026
- iShares — TIPS Bond ETF (TIP) fund page
- iShares — 7-10 Year Treasury Bond ETF (IEF) fund page
- Schwab Asset Management — Schwab U.S. TIPS ETF (SCHP)
- Vanguard — Short-Term Inflation-Protected Securities ETF (VTIP)
- TipsWatch — This week’s 10-year TIPS auction has strong appeal (September 13, 2026)
- Yahoo Finance — 10-year Treasury yield climbs to 5% for the first time since 2023
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