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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees Massachusetts Association of Assessing Officers Inc. Kathleen Costello

Kathleen Costello

Officer

Executive Director at Massachusetts Association of Assessing Officers Inc.

Fiscal year ended June 30, 2025. Published on January 25, 2026.

$58,500
2025

Total compensation

Kathleen Costello has been listed as an employee of Massachusetts Association of Assessing Officers Inc. in Form 990 filings since fiscal year 2024. Total compensation for Kathleen Costello has increased by 91.8% from 2024 to 2025.

Annual compensation details

$58,500
+91.8%
Executive Director
2025
$59k
40 hrs/wk
$30,500
Executive Director
2024
$31k
40 hrs/wk

Total compensation by year

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Revisions to this profile

January 25, 2026:
2025 Massachusetts Association of Assessing Officers Inc. 990 published
January 25, 2026:
2024 Massachusetts Association of Assessing Officers Inc. 990 published
January 25, 2026:
2023 Massachusetts Association of Assessing Officers Inc. 990 published

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