Company lists · Data refreshed September 2026

Top 25 Transaction management software companies based in the United States

RevenueBase identified 248 transaction management software companies headquartered in the United States as of September 2026 and tracks 27,393 professional contacts across them, including 11,825 with verified work emails and 9,821 with mobile numbers. Miami is the largest hub.

This list covers transaction management software companies 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 6, 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 6, 2026 86% judged on-target in blind review
248Companies
27,393Contacts tracked
11,825Verified emails
9,821Mobile numbers
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The 25 largest transaction management software companies based in the United States

Ranked by team size
Top 25 of 248 transaction management software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to transaction management software companies: 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
1Indirect evidenceSan Francisco, AZ, United StatesHQ checked Sep 6, 20261,001-5,0006,194 contacts →

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

Source: company website · checked Sep 6, 2026
2Indirect evidenceCenter Valley, PA, United StatesHQ checked Sep 6, 20261,001-5,0002,138 contacts →

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

Source: company website · checked Sep 6, 2026
3Indirect evidenceNew York, FL, United StatesHQ checked Sep 6, 20261,001-5,0002,123 contacts →

“Ramp is an all-in-one financial operations platform designed to save businesses time and money.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceWoodland Hills, CA, United StatesHQ checked Sep 6, 20261,001-5,0001,947 contacts →

“BlackLine (Nasdaq: BL) is building the trust infrastructure for the AI era of finance: a future where intelligence and integrity rise together across the work of finance.”

Source: company website · checked Sep 6, 2026
5Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 6, 20265,001-10,0001,589 contacts →

“FLEETCOR Technologies rebranded as Corpay on March 25, 2024.”

Source: company website · checked Sep 6, 2026
6Partial evidenceBoston, MA, United StatesHQ checked Sep 6, 20261,001-5,0001,194 contacts →

“Flywire Corporation (Nasdaq: FLYW) is a global payments enablement and software company.”

Source: company website · checked Sep 6, 2026
7Partial evidenceAuburn, AL, United StatesHQ checked Sep 6, 20261,001-5,000633 contacts →

“Backed by Aquiline Capital Partners and ADIA, Fullsteam is a dynamic and growing team of over 2,100 employees committed to driving innovation and delivering best-in-class software…”

Source: company website · checked Sep 6, 2026
8Strong evidenceNashville, TN, United StatesHQ checked Sep 6, 2026201-500313 contacts →

“Celero Commerce offers payment processing services, business management software, and data intelligence to small and medium-sized businesses, in one holistic platform.”

Source: company website · checked Sep 6, 2026
9Indirect evidenceCalverton, NY, United StatesHQ checked Sep 6, 2026501-1,000184 contacts →

“Electronic Payments is an industry leader in developing and delivering innovative payment processing and point of sale solutions to companies nationwide.”

Source: company website · checked Sep 6, 2026
10Indirect evidenceMiami, FL, United StatesHQ checked Sep 6, 202651-200172 contacts →

“PairSoft, one of the strongest financial automation platforms for mid-market and enterprise organizations, comprises a product lineup that natively integrates with Microsoft…”

Source: company website · checked Sep 6, 2026
11Partial evidenceAtlanta, GA, United StatesHQ checked Sep 6, 2026201-500152 contacts →

“MerchantE provides a financial technology platform that drives digital commerce and supports the money management needs of growing businesses.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceWausau, WI, United StatesHQ checked Sep 6, 2026201-500152 contacts →

“WAUSAU, a Deluxe Corporation company, is recognized for consistently delivering best-of-breed financial technology, services and solutions.”

Source: company website · checked Sep 6, 2026
13Partial evidenceDallas, TX, United StatesHQ checked Sep 6, 20261,001-5,000132 contacts →

“ProfitStars is a leading software, solution, and technology innovator.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceBoston, MA, United StatesHQ checked Sep 6, 2026201-500113 contacts →

“Cayan is hiring!”

Source: company website · checked Sep 6, 2026
15Indirect evidenceDetroit, MI, United StatesHQ checked Sep 6, 202651-20099 contacts →

“Autobooks is simple banking that works for small businesses.”

Source: company website · checked Sep 6, 2026
16Indirect evidenceChicago, IL, United StatesHQ checked Sep 6, 202651-20097 contacts →

“Most systems stop at approval.”

Source: company website · checked Sep 6, 2026
17Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 6, 2026201-50092 contacts →

“For small businesses and sole proprietorships in need of fast and accurate document reduction and spending management solutions, The Neat Company provides a cloud-based expense…”

Source: company website · checked Sep 6, 2026
18Indirect evidenceTampa, FL, United StatesHQ checked Sep 6, 202651-20071 contacts →

“Payzli, living up to its tagline "for the joy of business," is at the cutting edge of payment technology.”

Source: company website · checked Sep 6, 2026
19Partial evidenceSpringdale, AR, United StatesHQ checked Sep 6, 202651-20063 contacts →

“Teslar Software is a Springdale, Arkansas-based technology company delivering innovative software solutions for financial institutions.”

Source: company website · checked Sep 6, 2026
20Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202651-20056 contacts →

“Skyline Payments powers B2B transactions for small and midsize businesses, directly integrating payments into ERP, accounting, and eCommerce systems.”

Source: company website · checked Sep 6, 2026
21Strong evidenceOmaha, NE, United StatesHQ checked Sep 6, 202651-20055 contacts →

“BHMI is a highly regarded provider of software solutions that are designed to cater to the back-office processing of electronic payment transactions.”

Source: company website · checked Sep 6, 2026
22Partial evidenceOverland Park, KS, United StatesHQ checked Sep 6, 202651-20050 contacts →

“NeuAnalytics is the enterprise intelligence platform that helps creditors and lenders manage receivables, ensure compliance, and run case management, all in one place.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceAustin, TX, United StatesHQ checked Sep 6, 202611-5045 contacts →

“We’ve solved payments so you don’t have to.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceBrockton, MA, United StatesHQ checked Sep 6, 2026n/a45 contacts →

“Innovative IT provides cutting-edge technology solutions to help businesses streamline their operations and improve their bottom.”

Source: company website · checked Sep 6, 2026
25Partial evidenceWhittier, CA, United StatesHQ checked Sep 6, 202651-20043 contacts →

“RT Lawrence Corporation (RTL) is an accomplished single-source provider of innovative software solutions for the payment processing industry.”

Source: company website · checked Sep 6, 2026

Showing 25 of 248 transaction management software companies based in the United States

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Transaction management software companies based in the United States at a glance

As of Sep 6, 2026
43.2%Verified-email coverage
35.9%Mobile-number coverage
110.5Average contacts per company
11-50Median size (employees)
3.6%Largest-city concentration · Miami
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
107
11-50
82
51-200
31
201-500
10
501-1,000
1
1,001-5,000
13
5,001-10,000
1
10001+
3

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 management software companies, 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 management software companies”. 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 management software companies), 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 management software companies, 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, 11,825 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 6, 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 management software companies, 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 management software companies are there based in the United States?

RevenueBase identified 248 transaction management software companies 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?

Square, headquartered in Scottsdale, tops this list with the largest team on record.

Which city has the most transaction management software companies?

Miami leads with 9 headquartered companies, followed by New York (9) and San Francisco (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 11,825 verified decision-maker contacts tracked across these 248 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 6, 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.