The U.S. Chamber of Commerce was the biggest lobbying group in Washington in 2025, reporting $72.1 million in federal lobbying expenditures. The National Association of Realtors came second at $54.4 million, and the Pharmaceutical Research and Manufacturers of America (PhRMA) came third at $38.2 million. Federal lobbying spending hit a record $5.08 billion for the year, split across thousands of trade associations, corporations, professional groups, and advocacy nonprofits.
The Top Federal Lobbying Spenders in 2025
The largest reported federal lobbying expenditures for 2025 were:1OpenSecrets. Top Spenders
- U.S. Chamber of Commerce — $72.1 million
- National Association of Realtors — $54.4 million
- PhRMA — $38.2 million
- Business Roundtable — $33.5 million
- American Hospital Association — $32 million
- Blue Cross Blue Shield — $27.9 million
- Meta Platforms — $26.3 million
- American Medical Association — $23.8 million
- AARP — $20.9 million
- General Motors — $19.7 million
- Amazon — $18.9 million
- America’s Health Insurance Plans — $17.2 million
- Alphabet (Google) — $16.5 million
- Lockheed Martin — $15.7 million
- General Dynamics — $13.9 million
- RTX Corp — $13.8 million
Trade Associations Dominate the Top
Trade associations sit at the top of the rankings because they pool resources from hundreds or thousands of member companies. The U.S. Chamber of Commerce has held the number one spot for decades, and in earlier years its annual spending regularly exceeded $100 million. It spent $76.4 million in 2024 before dropping slightly to $72.1 million in 2025.2OpenSecrets. US Chamber of Commerce Lobbying Profile The Chamber advocates across a wide range of issues including tax policy, trade agreements, and workforce regulation.
The National Association of Realtors is the other perennial heavyweight, spending $86.4 million in 2024 before dropping to $54.4 million in 2025.3OpenSecrets. National Assn of Realtors Lobbying Profile NAR focuses on housing policy, mortgage regulation, property taxes, and zoning. Wide year-to-year swings are common among trade associations and often track specific legislative fights.
The Business Roundtable, an association of CEOs from major U.S. companies, ranked fourth in 2025 at $33.5 million, concentrating on corporate tax rates, trade policy, and skilled-labor immigration.
Healthcare Is the Biggest-Spending Sector
Healthcare is the single most expensive lobbying sector in the country. Pharmaceutical and health products companies alone spent nearly $452 million on federal lobbying in 2025, far more than any other industry.4OpenSecrets. Industries That reflects how much federal regulation touches drug approval, pricing, insurance coverage, and hospital funding.
PhRMA led the healthcare pack at $38.2 million, lobbying on patent protections, government price negotiations, and drug approval timelines. The American Hospital Association followed at $32 million, focusing on Medicare reimbursement and federal funding for medical facilities. Blue Cross Blue Shield spent $27.9 million,5OpenSecrets. Blue Cross/Blue Shield Lobbying Profile and America’s Health Insurance Plans (AHIP) added another $17.2 million. Combine all the hospitals, insurers, drug companies, and device manufacturers lobbying separately and the healthcare sector’s total footprint dwarfs everything else in Washington.
Tech and Corporate Spenders
Individual corporations can rival trade associations. Big tech companies have climbed the rankings rapidly over the past decade. Meta led all tech firms in 2025 with $26.3 million, up sharply from earlier years, and its advocacy covers children’s online safety, artificial intelligence regulation, and content moderation rules.
Amazon spent $18.9 million in 2025, concentrating on logistics regulation, antitrust enforcement, and labor policy.6OpenSecrets. Amazon.com Lobbying Profile Alphabet reported $16.5 million with heavy attention on AI policy and competition law. These firms combine large in-house lobbying teams with contracts at multiple outside firms, covering dozens of legislative issues at once.
General Motors, at $19.7 million, may look out of place in a tech-and-healthcare list. The auto industry is deeply entangled with federal emissions standards, electric vehicle incentives, trade tariffs, and safety regulations, all of which keep automakers writing large checks to lobbyists.
Defense Contractors
Defense firms occupy a unique position because their primary customer is the federal government itself. Lockheed Martin spent $15.7 million in 2025, General Dynamics spent $13.9 million, and RTX Corp (formerly Raytheon) spent $13.8 million. The overall defense industry contributed over $100 million in lobbying spending for the year.4OpenSecrets. Industries These companies lobby on defense appropriations, procurement rules, weapons system funding, and export controls. With individual contracts worth tens of billions of dollars, even a modest lobbying budget can produce enormous returns.
Professional and Membership Groups
The American Medical Association spent $23.8 million in 2025, making it the highest-spending professional association in Washington.7OpenSecrets. American Medical Assn Lobbying Profile The AMA represents physicians and medical students and focuses on physician payment schedules, public health funding, and scope-of-practice rules.
AARP reported $20.9 million,8OpenSecrets. AARP Lobbying Profile backed by a membership base of tens of millions that gives it grassroots leverage raw spending figures don’t capture. Its priorities include Social Security, Medicare, prescription drug costs, and long-term care. AARP may extract more influence per lobbying dollar than almost anyone else on the list because lawmakers know it can mobilize voters.
Labor unions like the AFL-CIO and SEIU maintain a lobbying presence, but their direct lobbying budgets are far smaller than the trade associations they often oppose. The AFL-CIO’s annual federal lobbying typically runs in the low single-digit millions. Unions exert more influence through campaign contributions, get-out-the-vote efforts, and member mobilization than through direct lobbying spending.
Environmental groups sit in a similar spot. The Sierra Club reported just $790,000 in federal lobbying in 2024 despite its national visibility.9OpenSecrets. Sierra Club Lobbying Profile The biggest environmental spending comes through industry trade groups and corporations lobbying on energy and emissions policy, not through the advocacy organizations most people picture.
Which Industries Spend the Most Overall
Grouping the data by industry rather than by individual organization tells a slightly different story. The five highest-spending industries for federal lobbying in 2025 were:
- Pharmaceuticals and health products — $451.8 million
- Electronics manufacturing and equipment — $315.3 million
- Securities and investment — $194.7 million
- Insurance — $172.2 million
- Air transport — $155.1 million
Oil and gas ($148.3 million), electric utilities ($142.4 million), and real estate ($126.9 million) also landed in the top tier.4OpenSecrets. Industries Pharmaceuticals spent more than twice what securities and investment firms spent, and nearly as much as the next two industries combined. That gap has grown as drug pricing and approval policy have become more politically volatile.
Lobbying Dollars Are Not Campaign Contributions
One common point of confusion: lobbying expenditures and campaign contributions are separate systems. Lobbying money pays for direct contact with lawmakers, research, strategy, and grassroots advocacy aimed at shaping legislation or regulations. Campaign contributions go toward electing candidates through political action committees or independent expenditures. Lobbying falls under the Lobbying Disclosure Act filed with Congress. Campaign spending falls under campaign finance laws overseen by the Federal Election Commission.
Corporations are prohibited from contributing directly to federal candidates. They create PACs funded by voluntary employee donations, and those PACs contribute within strict dollar limits. The same company can simultaneously spend millions on lobbying using corporate funds and operate a PAC that channels employee contributions to campaigns. A figure like “$72 million” next to the U.S. Chamber of Commerce reflects only the lobbying side; the Chamber’s PAC activity and issue advertising are additional spending tracked elsewhere.
Where These Numbers Come From
Every dollar in the rankings is reported through mandatory quarterly disclosures. The Lobbying Disclosure Act of 1995 requires anyone paid to lobby federal officials to register with the Secretary of the Senate and the Clerk of the House and to file quarterly reports detailing spending and issues.10Office of the Law Revision Counsel. 2 USC 1604 – Reports by Registered Lobbyists Congress tightened the framework in 2007 with the Honest Leadership and Open Government Act, which moved reports from semiannual to quarterly, added electronic filing, and expanded what had to be disclosed.11Office of the Clerk of the U.S. House of Representatives. Public Law 110-81 – Honest Leadership and Open Government Act of 2007 Reports are due within 20 days after each quarter closes, and knowingly failing to file or correct a defective filing carries civil fines of up to $200,000.12Office of the Law Revision Counsel. 2 USC 1606 – Penalties The result is a public record detailed enough to rank every major spender by name and dollar amount.