Company lists · Data refreshed September 2026

Top 25 Payment systems consulting firms based in the United States

Name: Payment systems consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 1,750 companies tracked

RevenueBase identified 1,750 payment systems consulting firms headquartered in the United States as of September 2026 and tracks 54,604 professional contacts across them, including 16,696 with verified work emails and 20,035 with mobile numbers. New York is the largest hub.

This list covers payment systems consulting firms 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 5, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

1,750Companies

54,604Contacts tracked

16,696Verified emails

20,035Mobile numbers

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The 25 largest payment systems consulting firms based in the United States

Ranked by team size

Top 25 of 1,750 payment systems consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to payment systems consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	First Data Corporation	Indirect evidence	Brookfield, United StatesHQ checked Sep 5, 2026	10001+	6,608 contacts →
	Indirect evidence “First Data is now Fiserv (NASDAQ:FISV).” Source: RevenueBase Database · checked Sep 5, 2026
2	ACI Worldwide	Partial evidence	Elkhorn, NE, United StatesHQ checked Sep 5, 2026	1,001-5,000	4,588 contacts →
	Partial evidence “ACI Worldwide, an original innovator in global payments technology, delivers transformative software solutions that power intelligent payments orchestration in real time so banks…” Source: RevenueBase Database · checked Sep 5, 2026
3	Heartland	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,787 contacts →
	Partial evidence “Global Payments Inc.(NYSE: GPN), a leading worldwide provider of payment technology and software solutions, announced the unification of its technology stack under a single brand…” Source: RevenueBase Database · checked Sep 5, 2026
4	Deluxe	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 5, 2026	5,001-10,000	3,695 contacts →
	Partial evidence “Deluxe, a trusted payments and data company, champions business so communities thrive.” Source: RevenueBase Database · checked Sep 5, 2026
5	Evertec	Partial evidence	San Juan, PR, United StatesHQ checked Sep 5, 2026	5,001-10,000	3,157 contacts →
	Partial 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 5, 2026
6	Elavon	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,885 contacts →
	Indirect evidence “Elavon, a wholly owned subsidiary of U.S.” Source: RevenueBase Database · checked Sep 5, 2026
7	Bottomline	Indirect evidence	Portsmouth, NH, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,548 contacts →
	Indirect evidence “At Bottomline, we help businesses pay and get paid.” Source: RevenueBase Database · checked Sep 5, 2026
8	Shift4	Indirect evidence	Center Valley, PA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,138 contacts →
	Indirect evidence “Shift4 (NYSE: FOUR) powers the experience economy, enabling businesses to deliver the moments that matter.” Source: RevenueBase Database · checked Sep 5, 2026
9	Opus Technologies	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 5, 2026	501-1,000	1,011 contacts →
	Partial evidence “Opus is a trusted engineering partner to payment providers, banks, and fintechs navigating change in a real-time, digital-first world.” Source: RevenueBase Database · checked Sep 5, 2026
10	Wholesale Payments	Partial evidence	Lubbock, TX, United StatesHQ checked Sep 5, 2026	201-500	483 contacts →
	Partial evidence “Founded in 2007, Wholesale Payments is one of the nation's largest privately held merchant services providers, providing credit card processing, POS solutions, and…” Source: RevenueBase Database · checked Sep 5, 2026
11	EVO Payments, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	434 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
12	REPAY	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	201-500	430 contacts →
	Partial evidence “REPAY, established in 2006, is a full-service payment technology and processing provider that enables the expedient and secure collection of payments through any channel at any…” Source: RevenueBase Database · checked Sep 5, 2026
13	Corecard Software, INC	Partial evidence	Norcross, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	409 contacts →
	Partial evidence “CoreCard is a leading issuer-processor and provider of card management and transaction processing systems.” Source: RevenueBase Database · checked Sep 5, 2026
14	Hypercom	Partial evidence	Suite 300, AZ, United StatesHQ checked Sep 5, 2026	1,001-5,000	361 contacts →
	Partial evidence “Hypercom Corporation is one of the largest global providers of complete electronic payment solutions and value-added services at the point-of-transaction.” Source: RevenueBase Database · checked Sep 5, 2026
15	Montran	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	332 contacts →
	Indirect evidence “For over 45 years, Montran has helped financial institutions operate and modernize critical financial infrastructure in more than 90 countries worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
16	Jetpay NOW NCR Payment Solutions	Indirect evidence	Allentown, United StatesHQ checked Sep 5, 2026	n/a	331 contacts →
	Indirect evidence “Acquired by NCR Corporation 12/2018.” Source: RevenueBase Database · checked Sep 5, 2026
17	Vizypay	Partial evidence	Waukee, IA, United StatesHQ checked Sep 5, 2026	51-200	327 contacts →
	Partial evidence “VizyPay is revolutionizing the payments industry by offering a credit card processing model that focuses on powerful payment solutions, real human customer support, and simple…” Source: RevenueBase Database · checked Sep 5, 2026
18	PAX Technology, Inc. North America	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 5, 2026	201-500	319 contacts →
	Indirect evidence “Founded in 2001, PAX Technology, Inc.” Source: RevenueBase Database · checked Sep 5, 2026
19	Electronic Merchant Systems	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 5, 2026	201-500	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 5, 2026
20	TALUS	Partial evidence	Dallas, TX, United StatesHQ checked Sep 5, 2026	51-200	299 contacts →
	Partial evidence “Talus is the premier choice for small business payment processing.” Source: RevenueBase Database · checked Sep 5, 2026
21	Riverside Payments	Partial evidence	Vancouver, WA, United StatesHQ checked Sep 5, 2026	201-500	270 contacts →
	Partial evidence “At Riverside Payments, our mission is clear: to provide the best payment solutions at the best price, coupled with unparalleled nationwide service.” Source: RevenueBase Database · checked Sep 5, 2026
22	Cardconnect	Partial evidence	King Of Prussia, PA, United StatesHQ checked Sep 5, 2026	5,001-10,000	263 contacts →
	Partial evidence “CardConnect, a Fiserv company, is a leading payment technology provider empowering ISOs, agents, and businesses with innovative, secure, and scalable payment solutions.” Source: RevenueBase Database · checked Sep 5, 2026
23	PAYA	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	201-500	196 contacts →
	Partial evidence “Paya, a Nuvei Company, is a leading provider of integrated payment and frictionless commerce solutions that help customers accept and make payments, expedite receipt of money, and…” Source: RevenueBase Database · checked Sep 5, 2026
24	Electronic Payments	Partial evidence	Calverton, NY, United StatesHQ checked Sep 5, 2026	501-1,000	184 contacts →
	Partial evidence “Electronic Payments is an industry leader in developing and delivering innovative payment processing and point of sale solutions to companies nationwide.” Source: RevenueBase Database · checked Sep 5, 2026
25	Clai Payments Technologies	Partial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	176 contacts →
	Partial 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 5, 2026

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: payment systems consulting firms. 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 payment systems consulting firms.
Partial evidence: Its own public description names part of payment systems consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name payment systems consulting firms. 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 1,750 payment systems consulting firms based in the United States

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Payment systems consulting firms based in the United States at a glance

As of Sep 5, 2026

30.6%Verified-email coverage

36.7%Mobile-number coverage

31.2Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

833

11-50

585

51-200

235

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

15,5130–30

99931–60

861–90

990–180

167180+

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 payment systems consulting firms, 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 “payment systems consulting firms”. 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 payment systems consulting firms), 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 payment systems consulting firms, 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, 16,696 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 5, 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.

Payment systems consulting firms by metro

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 payment systems consulting firms, 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 payment systems consulting firms are there based in the United States?

RevenueBase identified 1,750 payment systems consulting firms 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?

First Data Corporation, headquartered in United States, tops this list with the largest team on record.

Which city has the most payment systems consulting firms?

New York leads with 66 headquartered companies, followed by Miami (35) and Atlanta (30).

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 16,696 verified decision-maker contacts tracked across these 1,750 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 5, 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.