Company lists · Data refreshed September 2026

Top 25 Transaction solutions worldwide

RevenueBase identified 4,105 transaction solutions worldwide as of September 2026 and tracks 277,720 professional contacts across them, including 98,034 with verified work emails. The United States is the largest market and London the largest hub.

This list covers transaction solutions worldwide, 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 21, 2026. Country and city lists for transaction solutions follow the table.

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 21, 2026 86% judged on-target in blind review
4,105Companies
277,720Contacts tracked
98,034Verified emails
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The 25 largest transaction solutions worldwide

Ranked by team size
Top 25 of 4,105 transaction solutions worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to transaction solutions: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceFoster City, CA, United StatesHQ checked Sep 21, 202610001+38,597 contacts →

Partial evidence

“Visa (NYSE: V) is a world leader in digital payments, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200…”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceSouth San Francisco, CA, United StatesHQ checked Sep 21, 20265,001-10,00013,124 contacts →

Indirect evidence

“Stripe builds programmable financial services.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidencePuteaux, FranceHQ checked Sep 21, 202610001+11,697 contacts →

Indirect evidence

“We are Worldline.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceCincinnati, OH, United StatesHQ checked Sep 21, 20265,001-10,0008,097 contacts →

Indirect evidence

“Worldpay combined with Global Payments in January 2026 to create a leading payments technology and software company that powers commerce for businesses of all sizes worldwide.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceBrookfield, United StatesHQ checked Sep 21, 202610001+6,608 contacts →

Indirect evidence

“First Data is now Fiserv (NASDAQ:FISV).”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceSan Francisco, AZ, United StatesHQ checked Sep 21, 20261,001-5,0006,194 contacts →

Indirect evidence

“Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square.”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 21, 20261,001-5,0005,233 contacts →

Indirect evidence

“Adyen (AMS: ADYEN) is the financial technology platform of choice for leading companies.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceBarueri, BrazilHQ checked Sep 21, 20265,001-10,0004,931 contacts →

Indirect evidence

“For more than 30 years, CSU Digital has powered the infrastructure behind some of Latin America's most trusted financial products.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceNew York, GA, United StatesHQ checked Sep 21, 20261,001-5,0004,303 contacts →

Indirect evidence

“The world’s leading brands trust Verifone for global payments.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceStockholm, SwedenHQ checked Sep 21, 20261,001-5,0004,091 contacts →

Indirect evidence

“Klarna – The smarter way to shop and pay Klarna is the AI-powered global payments and commerce network, on a mission to make shopping smarter and more flexible.”

Source: RevenueBase Database · checked Sep 21, 2026
11Partial evidenceOklahoma City, OK, United StatesHQ checked Sep 21, 20261,001-5,0003,787 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 21, 2026
12Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 21, 20265,001-10,0003,695 contacts →

Indirect evidence

“Deluxe, a trusted payments and data company, champions business so communities thrive.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceSuresnes, FranceHQ checked Sep 21, 20261,001-5,0003,633 contacts →

Indirect evidence

“Ingenico is the global leader in payment acceptance and services.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceAtlanta, AB, United StatesHQ checked Sep 21, 202610001+3,543 contacts →

Indirect evidence

“Corpay (NYSE: CPAY) is a global leader in business payments, helping companies simplify and control vendor payments, international payments, and employee payments through modern…”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 21, 20261,001-5,0002,885 contacts →

Indirect evidence

“Elavon, a wholly owned subsidiary of U.S.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceLeawood, KS, United StatesHQ checked Sep 21, 202610001+2,884 contacts →

Partial evidence

“A global leader in payments processing and cross-border transactions, Euronet moves money in all the ways consumers and businesses depend upon.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceSão Paulo, BrazilHQ checked Sep 21, 20261,001-5,0002,743 contacts →

Indirect evidence

“Redecard is now Rede.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidencePortsmouth, NH, United StatesHQ checked Sep 21, 20261,001-5,0002,548 contacts →

Indirect evidence

“At Bottomline, we help businesses pay and get paid.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 21, 20261,001-5,0002,409 contacts →

Indirect evidence

“InComm Payments is an innovative global payments technology provider.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceLondon, United KingdomHQ checked Sep 21, 20261,001-5,0002,310 contacts →

Indirect evidence

“Checkout.com processes payments for thousands of companies that shape the digital economy.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceCenter Valley, PA, United StatesHQ checked Sep 21, 20261,001-5,0002,138 contacts →

Indirect evidence

“Shift4 (NYSE: FOUR) powers the experience economy, enabling businesses to deliver the moments that matter.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceMilan, ItalyHQ checked Sep 21, 20265,001-10,0002,065 contacts →

Indirect evidence

“We are the Leading Payment Company in Europe.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceBallerup, DenmarkHQ checked Sep 21, 20261,001-5,0002,055 contacts →

Indirect evidence

“Nexi has the scale, geographical reach, and capabilities to drive the evolution of digital payments across Europe.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceMontréal, QC, CanadaHQ checked Sep 21, 20261,001-5,0002,028 contacts →

Indirect evidence

“Nuvei is building the infrastructure for every payment, everywhere.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceChennai, IndiaHQ checked Sep 21, 20261,001-5,0001,950 contacts →

Indirect evidence

“Financial Software and Systems (FSS) is a globally leading provider of payment products and a payment processor.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 4,105 transaction solutions worldwide

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Transaction solutions worldwide at a glance

As of Sep 21, 2026
35.3%Verified-email coverage
67.7Average contacts per company
11-50Median size (employees)
2.7%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
1,455
11-50
1,594
51-200
697
201-500
184
501-1,000
61
1,001-5,000
72
5,001-10,000
14
10001+
19

Email recency is reported on each country list linked below.

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 solutions, 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.
Coverage
Every country. Country and city lists for transaction solutions are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “transaction solutions”. 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 solutions), 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 solutions, and records with no verified work email.
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, 98,034 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 21, 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.

Transaction solutions by location

23 lists · largest first

Every Transaction solutions list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 solutions, 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 solutions are there worldwide?

RevenueBase identified 4,105 transaction solutions worldwide 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?

VISA, headquartered in Foster City, tops this list with the largest team on record.

Which country has the most transaction solutions?

The United States leads with 1,677 companies, followed by the United Kingdom (212) and Brazil (150). Every transaction solutions list by country and city is linked on this page.

Which city has the most transaction solutions?

London leads with 109 headquartered companies, followed by New York (69) and Sao Paulo (49).

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 98,034 verified decision-maker contacts tracked across these 4,105 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 21, 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.