Aon Service Corporation (FKA Aon Hewitt)

Based in DC

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AI Overview

With $1.5M in lobbying spend across 27 quarterly filings, Aon Service Corporation (FKA Aon Hewitt) is a significant lobbying presence.

$1.5M
Total Lobbying Spend
27
Quarterly Filings
1
Lobbying Firms Used
8
Individual Lobbyists

Spending by Year

YearLobbying Spend
2018$220K
2019$200K
2020$180K
2021$150K
2022$220K
2023$200K
2024$150K
2025$150K

Lobbying Firms

SQUIRE PATTON BOGGS

What They Lobby For

  • Advice regarding Foreign Account Tax Compliance Act (FATCA).
  • Advice regarding retirement-related legislation and regulatory reform.
  • Advice regarding Foreign Account Tax Compliance Act(FATCA).
  • Legislation and regulatory initiatives that could affect how organizations work, travel, and convene in the wake of the COVID-19 pandemic.
  • Advice regarding international tax policy.
  • Advice regarding retirement-related legislation - S.424, Retirement Fairness for Charities and Educational Institutions Act of 2025 - and regulatory reform.

Related Investigations

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Data Sources: Senate LDA Filings

Last updated: February 2026

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