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BIL vs TBUX: Differences, Returns & Fees

BIL's duration was 0.2 years on Jun 30, 2026 and TBUX's 0.7 on May 31, 2026; BIL charges 0.14% to TBUX's 0.17%. Net assets: $51.1bn on Oct 20, 2026 for SPDR Bloomberg 1-3 Month T-Bill ETF, and $1.9bn on Oct 19, 2026 for T. Rowe Price Ultra Short-Term Bond ETF.

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Answers cite the figures on this page.

BIL costs 0.03 points a year less; their one-year returns differ by 0.2 points; BIL is far larger, $51.2bn against $1.9bn.

BIL vs TBUX: Differences, Returns & Fees
BILTBUX
Expense ratio0.14%0.17%
Net assets, as of Oct 19, 2026$51.2bn$1.9bn
Total return, 1 year+3.7%+3.9%
What it tracks1-3 month T-billsNo index, actively managed
Holdings in commonreport dates differ

Holdings in common uses holdings dated May 31, 2026 and Jun 30, 2026.

+3.7%
BIL total return, 1 year
+3.9%
TBUX total return, 1 year
0.14%
BIL expense ratio
0.17%
TBUX expense ratio

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Client brief · page 1 of 2Report BR-439D81141D

BIL and TBUX are built for the same job. How do they differ in cost, holdings and results?

  1. What each follows. BIL follows 1-3 month T-bills and TBUX follows No index, actively managed.
  2. Number of holdings. BIL holds 18 positions and TBUX holds 622.
  3. Size. BIL has $51.2bn in net assets and TBUX $1.9bn (net assets, as of Oct 19, 2026); BIL is 26.9 times larger.

Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.

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On the same fields

BIL
SPDR Bloomberg 1-3 Month T-Bill ETF
TBUX
T. Rowe Price Ultra Short-Term Bond ETF
Where it sits Bond ETF Bond ETF
Issuer State Street T. Rowe Price
What it is Tracks an index of 1-3 month T-bills Actively managed
Total return, 1 year +3.7% +3.9%
Its benchmark over the same days not measured −1.9% (AGG)
Gap to its benchmark not measured +5.8 pts vs AGG
Expense ratio 0.14% 0.17%
Holdings 18 622
Net assets, BIL as of Oct 20, 2026 and TBUX as of Oct 19, 2026 $51.1bn $1.9bn

BIL and TBUX on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.

About BIL

BIL tracks an index of 1-3 month T-bills. Over the year to Oct 20, 2026 it returned +3.7% with distributions reinvested. The prospectus expense ratio is 0.14% a year.

About TBUX

TBUX is actively managed and tracks no index. Over the year to Oct 20, 2026 it returned +3.9% with distributions reinvested, against −1.9% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.17% a year.

Questions people ask

Which returned more over the last year, BIL or TBUX?
In the year to Oct 20, 2026, with distributions reinvested, BIL returned +3.7% and TBUX +3.9%.
Which is cheaper, BIL or TBUX?
BIL is cheaper, by 0.03 percentage points a year. That is about $3 on $10,000 held for a year. Fees come from each fund's prospectus.
Other comparisons
BIL vs XHLFBIL vs VRIGBIL vs IBTGBIL vs GSSTJPST vs TBUXSHV vs TBUXSGOV vs TBUXPULS vs TBUX
BIL on its own →TBUX on its own →Hold both: look the portfolio through →Rankings →BIL dividend history →BIL holdings →TBUX dividend history →TBUX holdings →Standards and sources →
Where these figures came from
BIL filings on SEC EDGAR ↗BIL prospectus with the expense ratio (SEC) ↗State Street website ↗TBUX filings on SEC EDGAR ↗TBUX prospectus with the expense ratio (SEC) ↗T. Rowe Price website ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

Cite this pageCitation, APA and Markdown

ETFIQ, BIL against TBUX, data as of Oct 20, 2026. https://etfiq.com/compare/any/bil-vs-tbux

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Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.