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BILS vs IBDS: Differences, Returns & Fees

BILS's duration was 0.4 years on Jun 30, 2026 and IBDS's 0.8 on Jul 31, 2026; IBDS charges 0.10% to BILS's 0.14%. Net assets on Oct 20, 2026: $3.9bn for State Street SPDR Bloomberg 3-12 Month T-Bill ETF and $4.0bn for iShares iBonds Dec 2027 Term Corporate ETF.

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Answers cite the figures on this page.

IBDS costs 0.04 points a year less; their one-year returns differ by 0.3 points.

BILS vs IBDS: Differences, Returns & Fees
BILSIBDS
Expense ratio0.14%0.10%
Net assets$3.9bn$4.0bn
Total return, 1 year+3.6%+3.3%
What it tracksnot read by ETFIQnot read by ETFIQ
Holdings in commonreport dates differ

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

+3.6%
BILS total return, 1 year
+3.3%
IBDS total return, 1 year
0.14%
BILS expense ratio
0.10%
IBDS expense ratio

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Client brief · page 1 of 2Report BR-621DCF7B15

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

  1. Number of holdings. BILS holds 23 positions and IBDS holds 647.
  2. What each follows (similar). Both follow not read by ETFIQ.
  3. One-year total return (similar). Over 1 year to Oct 20, 2026 BILS returned +3.6% and IBDS +3.3% with distributions reinvested, a gap of 0.3 points.

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

BILS
State Street SPDR Bloomberg 3-12 Month T-Bill ETF
IBDS
iShares iBonds Dec 2027 Term Corporate ETF
Where it sits Bond ETF Bond ETF
Issuer State Street iShares
What it is Tracks an index Tracks an index
Total return, 1 year +3.6% +3.3%
Expense ratio 0.14% 0.10%
Holdings 23 647
Net assets $3.9bn $4.0bn

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

About BILS

BILS tracks an index. Over the year to Oct 20, 2026 it returned +3.6% with distributions reinvested. The prospectus expense ratio is 0.14% a year.

About IBDS

IBDS tracks an index. Over the year to Oct 20, 2026 it returned +3.3% with distributions reinvested. The prospectus expense ratio is 0.10% a year.

Questions people ask

Which returned more over the last year, BILS or IBDS?
In the year to Oct 20, 2026, with distributions reinvested, BILS returned +3.6% and IBDS +3.3%.
Which is cheaper, BILS or IBDS?
IBDS is cheaper, by 0.04 percentage points a year. That is about $4 on $10,000 held for a year. Fees come from each fund's prospectus.
Other comparisons
BILS vs GSSTBILS vs RAVIBILS vs VGUSBILS vs BILZIBDS vs VNLAIBDS vs TBLLIBDS vs IBTHIBDS vs TFLO
BILS on its own →IBDS on its own →Hold both: look the portfolio through →Rankings →BILS dividend history →BILS holdings →IBDS dividend history →IBDS holdings →Standards and sources →
Where these figures came from
BILS filings on SEC EDGAR ↗BILS prospectus with the expense ratio (SEC) ↗State Street website ↗IBDS filings on SEC EDGAR ↗IBDS prospectus with the expense ratio (SEC) ↗iShares page for IBDS ↗

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, BILS against IBDS, data as of Oct 20, 2026. https://etfiq.com/compare/any/bils-vs-ibds

Open data

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