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BIL vs IBDS: Differences, Returns & Fees

BIL's duration was 0.2 years on Jun 30, 2026 and IBDS's 0.8 on Jul 31, 2026; IBDS charges 0.10% to BIL's 0.14%. Net assets on Oct 20, 2026: $51.1bn for SPDR Bloomberg 1-3 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 0.4 points; BIL is 12.8 times larger.

BIL vs IBDS: Differences, Returns & Fees
BILIBDS
Expense ratio0.14%0.10%
Net assets$51.1bn$4.0bn
Total return, 1 year+3.7%+3.3%
What it tracks1-3 month T-billsnot read by ETFIQ
Holdings in commonreport dates differ

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

+3.7%
BIL total return, 1 year
+3.3%
IBDS total return, 1 year
0.14%
BIL expense ratio
0.10%
IBDS expense ratio

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Client brief · page 1 of 2Report BR-F82B575D51

BIL and IBDS 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 IBDS follows not read by ETFIQ.
  2. Number of holdings. BIL holds 18 positions and IBDS holds 647.
  3. Size. BIL has $51.1bn in net assets and IBDS $4.0bn (Net assets); BIL is 12.8 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
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 of 1-3 month T-bills Tracks an index
Total return, 1 year +3.7% +3.3%
Expense ratio 0.14% 0.10%
Holdings 18 647
Net assets $51.1bn $4.0bn

BIL and IBDS 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 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, BIL or IBDS?
In the year to Oct 20, 2026, with distributions reinvested, BIL returned +3.7% and IBDS +3.3%.
Which is cheaper, BIL 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
BIL vs SGOVBIL vs GSYBIL vs BILSBIL vs FLTRIBDS vs JPSTIBDS vs SHVIBDS vs PULSIBDS vs USFR
BIL on its own →IBDS on its own →Hold both: look the portfolio through →Rankings →BIL dividend history →BIL holdings →IBDS dividend history →IBDS holdings →Standards and sources →
Where these figures came from
BIL filings on SEC EDGAR ↗BIL 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, BIL against IBDS, data as of Oct 20, 2026. https://etfiq.com/compare/any/bil-vs-ibds

Open data

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