Expense Ratio History

LUIXX expense ratio history

Western Asset Institutional U.S. Treasury Obligations Money Market Fund, Institutional Shares

Fund company
Legg Mason Partners Institutional
Type
Mutual fund

0.33%

In basis points
33 basis points
Yearly cost per $10,000
$33
Prospectus dated
1 January 2026, filed with the SEC; rounded to 0.01%
Last change
Cut from 0.34% on 1 January 2026

Fee over time

LUIXX expense ratio: 0.44% until 29 Dec 2014, then 2.98%; 2.98% until 29 Dec 2015, then 0.31%; 0.31% until 27 Dec 2018, then 0.35%; 0.35% until 27 Dec 2019, then 0.39%; 0.39% until 29 Dec 2020, then 0.41%; 0.41% until 29 Dec 2021, then 0.43%; 0.43% until 29 Dec 2022, then 0.83%; 0.83% until 29 Dec 2023, then 0.34%; 0.34% until 1 Jan 2026, then 0.33%; read at 0.33% on 1 Jan 2026.0.00%1.00%2.00%3.00%4.00%Sep 2013Oct 2015Nov 2017Dec 2019Jan 2022Feb 20240.44% before0.33% from 1 Jan 2026
LUIXX expense ratio: 0.44% until 29 Dec 2014, then 2.98%; 2.98% until 29 Dec 2015, then 0.31%; 0.31% until 27 Dec 2018, then 0.35%; 0.35% until 27 Dec 2019, then 0.39%; 0.39% until 29 Dec 2020, then 0.41%; 0.41% until 29 Dec 2021, then 0.43%; 0.43% until 29 Dec 2022, then 0.83%; 0.83% until 29 Dec 2023, then 0.34%; 0.34% until 1 Jan 2026, then 0.33%; read at 0.33% on 1 Jan 2026.0.00%1.00%2.00%3.00%4.00%Sep 2013Nov 2017Jan 20220.44% before0.33% from 1 Jan 2026
Solid line: the fee in effect after each recorded change. Dashed: the fee before it. Dots: prospectuses filed with the SEC and dates we read the fee from a source.

Share classes

The same fund is sold as 3 share classes, each with its own fee. Figures are from each class's latest prospectus in SEC filings, rounded to 0.01%.

TickerShare classFeeAfter waiversProspectus dated
LUIXX (this page) Institutional Shares 0.33% 0.18% 1 Jan 2026
LAOXX Administrative Shares 0.52% 0.40% 1 Jan 2026
LAIXX Investor Shares 1.73% 0.23% 1 Jan 2026

Every figure we've recorded

DateFeeWhat happened
1 Jan 2026 0.33% In the prospectusTotal annual fund operating expenses in the prospectus dated 2026-01-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Jan 2026 0.33% Cut from 0.34% to 0.33%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2025-12-23
1 Jan 2025 0.34% In the prospectusTotal annual fund operating expenses in the prospectus dated 2025-01-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2023 0.34% In the prospectusTotal annual fund operating expenses in the prospectus dated 2023-12-29 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2023 0.34% Cut from 0.83% to 0.34%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2023-12-21
29 Dec 2022 0.83% In the prospectusTotal annual fund operating expenses in the prospectus dated 2022-12-29 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2022 0.83% Raised from 0.43% to 0.83%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2022-12-22
29 Dec 2021 0.43% In the prospectusTotal annual fund operating expenses in the prospectus dated 2021-12-29 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2021 0.43% Raised from 0.41% to 0.43%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2021-12-22
29 Dec 2020 0.41% In the prospectusTotal annual fund operating expenses in the prospectus dated 2020-12-29 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2020 0.41% Raised from 0.39% to 0.41%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2020-12-21
27 Dec 2019 0.39% In the prospectusTotal annual fund operating expenses in the prospectus dated 2019-12-27 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
27 Dec 2019 0.39% Raised from 0.35% to 0.39%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2019-12-30
27 Dec 2018 0.35% In the prospectusTotal annual fund operating expenses in the prospectus dated 2018-12-27 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
27 Dec 2018 0.35% Raised from 0.31% to 0.35%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2019-01-11
27 Dec 2017 0.31% In the prospectusTotal annual fund operating expenses in the prospectus dated 2017-12-27 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
28 Dec 2016 0.31% In the prospectusTotal annual fund operating expenses in the prospectus dated 2016-12-28 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
30 Sep 2016 0.31% In the prospectusTotal annual fund operating expenses in the prospectus dated 2016-09-30 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2015 0.31% In the prospectusTotal annual fund operating expenses in the prospectus dated 2015-12-29 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2015 0.31% Cut from 2.98% to 0.31%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2016-01-08
29 Dec 2014 2.98% In the prospectusTotal annual fund operating expenses in the prospectus dated 2014-12-29 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
29 Dec 2014 2.98% Raised from 0.44% to 2.98%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2015-01-16
27 Dec 2013 0.44% In the prospectusTotal annual fund operating expenses in the prospectus dated 2013-12-27 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
3 Sep 2013 0.44% In the prospectusTotal annual fund operating expenses in the prospectus dated 2013-09-03 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS

What this fee costs

Change the amount, years or return. The estimate keeps the fee at 0.33% and the return steady each year, the same assumptions as the cost example in a fund's prospectus.

$419 in fees over 10 years

After fees, $10,000 grows to $15,772.

Fees paid on $10,000 at 5% a year
AfterFees paid
1 year$34
3 years$106
5 years$186
10 years$419

How we read this figure

The figure is the total annual fund operating expenses line of the fee table in the fund's prospectus, as tagged in the fund company's filing with the SEC. The SEC publishes these figures rounded to four decimal places, so 0.015% appears as 0.02%. The fund company's own page may show a more precise number.

SEC filings give 15 prospectuses for this share class since 2013. Each one is listed above with a link to the filing.

How we read fees

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