The “largest” agencies are defined by a mix of metrics, including public revenue, estimated market share, and verifiable niche dominance (e.g., total dollars recovered or client-base saturation). Each collection agency has its own set of strengths ( and shortcomings). Selecting a debt collection company that fits your needs requires carefully evaluating their services, experience, and recovery rates.
Largest 14 Consumer (B2C) Collection Agencies
These firms primarily focus on collecting debts from individuals, such as credit card bills, medical debt, and personal loans. This sector is dominated by a few large, publicly traded debt buyers and major diversified servicing companies.
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Encore Capital Group (and subsidiaries Midland Credit Management/Midland Funding)
A publicly traded (NASDAQ: ECPG) specialty finance company and one of the largest debt buyers in the U.S. It purchases defaulted consumer debt portfolios from major banks. Its 2025 trailing-twelve-month (TTM) revenue was $1.46 billion.
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PRA Group (and subsidiary Portfolio Recovery Associates
A major publicly traded (NASDAQ: PRAA) global leader in acquiring and collecting nonperforming consumer loans. Its 2025 TTM revenue was $1.14 billion, with $1.9 billion in total cash collections for 2024.
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Alorica Inc.
A massive business process outsourcing (BPO) and customer experience (CX) leader estimated to control 10.4% of the total debt collection agency market. It is one of the largest first-party collections servicers in the U.S. market.
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Sherman Financial Group (and subsidiary LVNV Funding)
A major private debt buyer and a primary competitor to Encore and PRA. It is the parent company of Credit One Bank, a large financial institution that reported $1.52 billion in 2023 revenue.
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Transworld Systems Inc. (TSI)
One of the largest Accounts Receivable Management (ARM) providers in the U.S. It is a large-scale private company (estimated 1,895–5,000 employees) with a major focus on B2C verticals, including healthcare, government, and education.
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Credit Control, LLC
A large (200+ employees) consumer collection agency focused on the financial services sector. Its clients include 13 of the top 15 banks in the U.S.
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Williams & Fudge, Inc.
A dominant specialist in the higher education vertical, collecting student loans and tuition receivables. It is recognized as a “Large Employer” (200+ employees) and cited by clients like Texas Tech as its “highest performing agency.”
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ConServe
A top-performing ARM company and “Large Employer” (200+ employees) specializing in collections for higher education (student loans) and government agencies, including the IRS.
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IC System
A third-generation, family-owned agency with over 85 years of experience. It was named “Best for B2C” collections in 2025 rankings by Business News Daily.
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CBE Group Inc.
A “Large Employer” (200+ employees) recognized as a trusted leader in public sector and healthcare patient account collections.
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Allianz Trade Collections (Euler Hermes / Allianz Trade)
The commercial collections arm of Allianz Trade, a leading global trade-credit insurer, providing B2B debt recovery and receivables management services for exporters and domestic businesses in the U.S. and worldwide.
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Altus Receivables Management
One of the largest pure commercial collection agencies in North America, specializing in third-party and first-party B2B collections, with global legal networks and strong coverage in manufacturing, distribution, logistics, and industrial trade.
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ABC-Amega
A long-standing commercial collection agency focused on B2B receivables, industry credit groups, and international collections, serving corporate clients across many sectors and countries.
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Coface Collections
The collections arm of Coface, another major global trade-credit insurer, offering B2B debt recovery and amicable/legal collection services for companies trading internationally, including U.S. exporters.
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Largest 14 Commercial (B2B) Collection Agencies
These firms specialize in recovering debts owed by businesses to other businesses, such as unpaid invoices or service contract fees. This sector is defined by industry expertise and the total value of accounts managed.
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Caine & Weiner
A major B2B-focused agency that handles over $1 billion in placed accounts annually. Its client base includes 20% of Fortune 500 companies. It is also ranked as a top agency for the construction industry.
- The Kaplan Group:
One of the largest commercial collection companies in the USA. The owner, Dean Kaplan has 30 years of business and negotiating experience, has closed over $500 million of transactions (per Linkedin), and has an MBA from a top 5 university. 85% Success Rate on viable claims over $10,000.
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Greenberg, Grant & Richards Inc.
A CLLA-certified commercial agency that has collected over $1.5 billion to date for its clients. In recent years, it has collected over $100 million in each of the past two years.
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Brown & Joseph, LLC
The leading commercial collection firm for the insurance industry. It recovers more than $200 million in delinquent premiums for its clients annually.
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Transworld Systems Inc. (TSI)
A leading technology-enabled provider of revenue recovery solutions to businesses. Its B2B services are a core focus, including Accounts Receivable Management and Healthcare Revenue Cycle Management.
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Prestige Services Inc. (PSI)
A nationwide commercial agency consistently ranked as “Best for B2B Collections” by Business News Daily (2020-2025). It holds an A+ BBB rating.
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Atradius Collections
A major global firm consistently ranked as a top-5 agency for 2025. It specializes in B2B debt collection in the U.S. and internationally.
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Mesa Revenue Partners
A top-rated commercial collection agency founded in 1976. It specializes in corporate collections, including for complex industries like construction.
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C2C Resources
A CLLA-certified commercial agency with over 25,000 business clients. It is also noted as a top specialist for the construction industry.
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Murkin Group
A highly-regarded specialist agency focused on the construction industry, a major B2B vertical.
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Saba & Associates
A top-ranked collection agency that specializes in serving commercial clients within the construction industry.
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GC Services (InteLogix)
A large, privately held accounts receivable management and call-center company handling high-volume consumer collections for banks, credit card issuers, telecoms, government, and utilities across the U.S.
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Radius Global Solutions
A major ARM and contact-center provider with thousands of employees, focused heavily on consumer receivables in healthcare, financial services, utilities, and telecom, using omnichannel outreach and compliance-driven workflows.
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iQor
A global CX/BPO company with a long history in first-party and third-party consumer collections, especially in credit card, telecom, and cable, operating large call-center networks that handle early-stage and late-stage delinquent accounts.
We can assist you in selecting a good one based on your specific requirements based on our experience and opinion.
Note: Most collection agencies are private entities whose revenue is not often disclosed. We have compiled this list based on many parameters on the internet. We believe this list is nearly accurate. To help us improve this article (in case we have missed out on any), email us at support@nexacollect.com. Their size does not sort the list above.
AMCA, one of the biggest medical collection agencies, was shut down because of a huge data breach that proved too costly.