Expense Ratio History

MIEAX expense ratio history

MM S&P 500 Index Fund, Class R4

Fund company
Massmutual Select
Type
Index mutual fund

0.64%

In basis points
64 basis points
Yearly cost per $10,000
$64
Prospectus dated
1 February 2026, filed with the SEC; rounded to 0.01%
Last change
Raised from 0.62% on 1 February 2024

Fee over time

MIEAX expense ratio: 0.86% until 2 Apr 2012, then 0.90%; 0.90% until 1 Apr 2014, then 0.63%; 0.63% until 1 Feb 2016, then 0.62%; 0.62% until 1 Feb 2024, then 0.64%; read at 0.64% on 1 Feb 2026.0.00%0.50%1.00%1.50%Apr 2011Oct 2013Apr 2016Oct 2018Apr 2021Oct 20230.86% before0.64% from 1 Feb 2024
MIEAX expense ratio: 0.86% until 2 Apr 2012, then 0.90%; 0.90% until 1 Apr 2014, then 0.63%; 0.63% until 1 Feb 2016, then 0.62%; 0.62% until 1 Feb 2024, then 0.64%; read at 0.64% on 1 Feb 2026.0.00%0.50%1.00%1.50%Apr 2011Apr 2016Apr 20210.86% before0.64% from 1 Feb 2024
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 8 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
MIEAX (this page) Class R4 0.64% — 1 Feb 2026
— — 0.65% 0.50% 1 Apr 2013
MMINX Class R3 0.89% — 1 Feb 2026
MMIEX Service Class 0.39% — 1 Feb 2026
MIEYX Administrative Class 0.49% — 1 Feb 2026
MIEZX CLASS R5 0.24% — 1 Feb 2026
MMIZX Class I 0.14% — 1 Feb 2026
MMFFX Class A 0.74% — 1 Feb 2026

Every figure we've recorded

DateFeeWhat happened
1 Feb 2026 0.64% In the prospectusTotal annual fund operating expenses in the prospectus dated 2026-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2025 0.64% In the prospectusTotal annual fund operating expenses in the prospectus dated 2025-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2024 0.64% In the prospectusTotal annual fund operating expenses in the prospectus dated 2024-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2024 0.64% Raised from 0.62% to 0.64%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2024-02-02
1 Feb 2023 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2023-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2022 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2022-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2021 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2021-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2020 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2020-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2019 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2019-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2018 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2018-02-01 (form 497), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 497
1 Feb 2017 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2017-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2016 0.62% In the prospectusTotal annual fund operating expenses in the prospectus dated 2016-02-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Feb 2016 0.62% Cut from 0.63% to 0.62%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2016-02-18
1 Apr 2015 0.63% In the prospectusTotal annual fund operating expenses in the prospectus dated 2015-04-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Apr 2014 0.63% In the prospectusTotal annual fund operating expenses in the prospectus dated 2014-04-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
1 Apr 2014 0.63% Cut from 0.90% to 0.63%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2014-04-21
1 Apr 2013 0.90% In the prospectusTotal annual fund operating expenses in the prospectus dated 2013-04-01 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
2 Apr 2012 0.90% In the prospectusTotal annual fund operating expenses in the prospectus dated 2012-04-02 (form 485BPOS), from SEC bulk data, which rounds to 0.01%Source: SEC EDGAR filing, form 485BPOS
2 Apr 2012 0.90% Raised from 0.86% to 0.90%Prospectus date; the new figure appears in this filingSource: Prospectus (form 485BPOS) filed with the SEC on 2012-04-23
1 Apr 2011 0.86% In the prospectusTotal annual fund operating expenses in the prospectus dated 2011-04-01 (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 0.64% and the return steady each year, the same assumptions as the cost example in a fund's prospectus.

$800 in fees over 10 years

After fees, $10,000 grows to $15,299.

Fees paid on $10,000 at 5% a year
AfterFees paid
1 year$66
3 years$205
5 years$358
10 years$800

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 16 prospectuses for this share class since 2011. Each one is listed above with a link to the filing.

How we read fees

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