MICROSOFT CORPORATION Auditor
The independent registered public accounting firm that signed the audit report in each annual report on Form 10-K, newest first. PCAOB firm ID and the internal-control attestation are as tagged on the cover from fiscal 2021; earlier rows come from the signed report text.
- 2026-07-29: Fiscal year end 2026-06-30; Auditor DELOITTE & TOUCHE LLP; PCAOB firm ID 34; Location Seattle, Washington.
- 2025-07-30: Fiscal year end 2025-06-30; Auditor DELOITTE & TOUCHE LLP; PCAOB firm ID 34; Location Seattle, Washington.
- 2024-07-30: Fiscal year end 2024-06-30; Auditor DELOITTE & TOUCHE LLP; PCAOB firm ID 34; Location Seattle, Washington.
- 2023-07-27: Fiscal year end 2023-06-30; Auditor DELOITTE & TOUCHE LLP; PCAOB firm ID 34; Location Seattle, Washington.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-07-29 | 2026-06-30 | DELOITTE & TOUCHE LLP | 34 | Seattle, Washington | Yes |
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| 2025-07-30 | 2025-06-30 | DELOITTE & TOUCHE LLP | 34 | Seattle, Washington | Yes |
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| 2024-07-30 | 2024-06-30 | DELOITTE & TOUCHE LLP | 34 | Seattle, Washington | Yes |
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| 2023-07-27 | 2023-06-30 | DELOITTE & TOUCHE LLP | 34 | Seattle, Washington | Yes |
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| 2022-07-28 | 2022-06-30 | DELOITTE & TOUCHE LLP | 34 | Seattle, Washington | Yes |
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| 2021-07-29 | 2021-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | Yes |
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| 2019-08-01 | 2019-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2018-08-03 | 2018-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2017-08-02 | 2017-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2016-07-28 | 2016-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2015-07-31 | 2015-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2014-07-31 | 2014-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2013-07-30 | 2013-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2012-07-26 | 2012-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2011-07-28 | 2011-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2010-07-30 | 2010-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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| 2009-07-30 | 2009-06-30 | DELOITTE & TOUCHE LLP | | Seattle, Washington | |
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