Company lists · Data refreshed September 2026
Top 25 Transaction processing outsourcing consultants based in the United States
RevenueBase identified 579 transaction processing outsourcing consultants headquartered in the United States as of September 2026 and tracks 13,468 professional contacts across them, including 3,783 with verified work emails. New York is the largest hub.
This list covers transaction processing outsourcing consultants headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest transaction processing outsourcing consultants based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,157 contacts → | ||||
Strong evidence “EVERTEC, Inc.(NYSE: EVTC) is a leading full-service transaction processing business in Latin America, providing a broad range of merchant acquiring, payment processing and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,743 contacts → | ||||
Indirect evidence “Coforge Business Process Solutions (or Coforge BPS) offers digital platforms and solutions to multiple industries, including the financial services industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,370 contacts → | ||||
Indirect evidence “AIS is a professional services and technology company that reduces operating costs, improves compliance and mitigates risk through automation and highly skilled talent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 306 contacts → | ||||
Indirect evidence “Our mission is to be the industry leader in merchant services by providing an innovative suite of business solutions, a high level of quality service, and having professional…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 239 contacts → | ||||
Indirect evidence “In 1994, three friends, Mark Johnson, Phil Stewart, and Rex Johnson shared a vision.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 176 contacts → | ||||
Indirect evidence “We are experts in the supply of payment solutions for more than 30 years, owning 8 regional offices in the continent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 150 contacts → | ||||
Indirect evidence “This page is now close, for more information follow Worldpay.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 137 contacts → | ||||
Partial evidence “As the world's leading payments consultancy, we work with hundreds of Global 500 merchants saving them millions every year.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 133 contacts → | ||||
Indirect evidence “Vizant, acquired by Redbridge in 2019, is an advisory and technology services firm that assists treasury and finance functions with the reduction and elimination of payment card…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 124 contacts → | ||||
Partial evidence “Our Mission At Merchant Lynx Services, we believe in creating loyal customers by providing exceptional credit and debit card processing services to businesses nationwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 110 contacts → | ||||
Strong evidence “Informatix, a minority-owned powerhouse in technology, payment processing, Financial Institution Data Match (FIDM), consulting, and CSE outsourcing, has been a steadfast presence…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 96 contacts → | ||||
Partial evidence “Applied Card Systems (ACS) was founded in 1987 to provide credit card processing and servicing resources to small - and mid-sized financial institutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 95 contacts → | ||||
Indirect evidence “Retriever Merchant Solutions, a Payroc Company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 85 contacts → | ||||
Partial evidence “Pinaki Technologies is a global transaction technology services integrator that helps companies implement intelligent simplified solutions that solve business and operational…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 84 contacts → | ||||
Indirect evidence “Viking Client Services is a national provider of electronic payment solutions, customer care, billing and collection and recovery services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 82 contacts → | ||||
Indirect evidence “We are a global multi-service firm with deep knowledge of the electronic payments ecosystem • Our global footprint is focused in the North & Latin American region as well as the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 81 contacts → | ||||
Indirect evidence “NuSource pairs cutting edge technology with world-class service for financial institutions across the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 80 contacts → | ||||
Indirect evidence “Ranked by the Nilson Report as one of the largest payment processors in the United States, UBC currently handles the merchant accounts for over businesses and processes in excess…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 80 contacts → | ||||
Indirect evidence “We are an award-winning and fastest-growing merchant service company in the nation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 74 contacts → | ||||
Partial evidence “JOIN OUR TEAM WE ARE ALWAYS SEARCHING FOR TOP TALENT We are a local integrated portfolio of payment processing, risk management, and recovery solutions for merchant organizations…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Indirect evidence “Granite Solutions Groupe provides high caliber subject matter expertise to high performing companies in the financial services industry to support ongoing business operations…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 73 contacts → | ||||
Indirect evidence “BluePay and First Data are now Fiserv (NASDAQ:FISV).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 72 contacts → | ||||
Indirect evidence “ExpiTrans Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 66 contacts → | ||||
Indirect evidence “Vendara delivers modern, expertly built payment solutions and services to keep businesses running and growing profitably.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 65 contacts → | ||||
Indirect evidence “TSG (The Strawhecker Group) is a globally recognized analytics and consulting firm that supports the entire payments ecosystem, serving over clients from Fortune 500 leaders to…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: transaction processing outsourcing consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names transaction processing outsourcing consultants.
- Partial evidence
- Its own public description names part of transaction processing outsourcing consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name transaction processing outsourcing consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 579 transaction processing outsourcing consultants based in the United States
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Transaction processing outsourcing consultants based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 579 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among transaction processing outsourcing consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “transaction processing outsourcing consultants”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names transaction processing outsourcing consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among transaction processing outsourcing consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 3,783 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names transaction processing outsourcing consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many transaction processing outsourcing consultants are there based in the United States?
RevenueBase identified 579 transaction processing outsourcing consultants headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Evertec, headquartered in Cupey Bajo San Juan, tops this list with the largest team on record.
Which city has the most transaction processing outsourcing consultants?
New York leads with 19 headquartered companies, followed by Houston (10) and Atlanta (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,783 verified decision-maker contacts tracked across these 579 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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