Company lists · Data refreshed September 2026
Top 25 Payment systems law firms worldwide
RevenueBase identified 117 payment systems law firms worldwide as of September 2026 and tracks 1,150 professional contacts across them, including 399 with verified work emails and 310 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers payment systems law firms 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 5, 2026. Country and city lists for payment systems law firms 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.
The 25 largest payment systems law firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 133 contacts → | ||||
Partial 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 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 87 contacts → | ||||
Partial evidence “The Payments Association (TPA) is for payments firms, big & small.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 86 contacts → | ||||
Partial evidence “Pinion is a professional services firm focused primarily on payment-solutions technologies and information management.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 82 contacts → | ||||
Partial 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 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 78 contacts → | ||||
Partial evidence “Shieldpay is the payments platform for the legal and professional services industry, providing technology optimised solutions that reduce risk, provide transparency and enhance…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 78 contacts → | ||||
Indirect evidence “Established in 1997, Hudson Cook, LLP focuses on state and federal consumer and commercial financial services, banking and privacy compliance, regulation, enforcement and…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 26 contacts → | ||||
Partial evidence “Mercator Advisory Group is the leading, independent research and advisory services firm exclusively focused on the payments industry.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 22 contacts → | ||||
Indirect evidence “SW & M has unsurpassed expertise in meeting the specific needs of financial institutions, from credit unions to community banks, loan brokers to money service businesses.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 22 contacts → | ||||
Indirect evidence “At Buckley we focus on three key areas, financial services, government enforcement, and litigation, and do them exceptionally well.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 20 contacts → | ||||
Partial evidence “The partner law firms rely on to protect their financial future.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 19 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 19 contacts → | ||||
Partial evidence “Glenbrook Partners is a dedicated strategy consulting and advisory firm offering deep insights into how the payments industry is evolving and how advantages can be gleaned from…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Strong evidence “PSE Consulting – PSE (Payment Systems Europe Limited), based in London, UK, was formed in 1991 as a specialist business and technology payment systems consulting company.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Indirect evidence “Since 1985, Aldrich & Bonnefin, PLC* has been committed to meeting the needs of California's financial institutions.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Partial evidence “Flawless Money is a niche business consultancy focusing on payments and dealing with the financial regulation of electronic money, money remittance, and other payments.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 14 contacts → | ||||
Partial evidence “Level 3 is a customer-focused organization specializing in selling and consulting on modern payment technologies across all industries and platforms.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Strong evidence “Introducing FeeWise – the legal payment solution built exclusively for law firms.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Partial evidence “Proven Operators, We understand payments from every vantage point, merchants, providers, and payers.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 12 contacts → | ||||
Indirect evidence “acceptcards® was founded in 2005.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Partial evidence “Wespay Advisors leverages extensive payments expertise to develop tailored consulting and risk management solutions that help our clients elevate their payments programs.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 12 contacts → | ||||
Partial evidence “A leading force in payments consulting, NEACH Payments Group (NPG) transcends geographical boundaries to bring our insights to the forefront.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 contacts → | ||||
Indirect evidence “Authoripay is regulatory consultancy for Fintechs and Neobanks of all sizes and at all stages of their journey.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Partial evidence “Secure Account Service is a fully-autonomous payment processor acting as a third-party intermediary.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Partial evidence “Neopay leads the market in delivering compliance solutions to electronic money issuers and payment institutions.” Source: RevenueBase Database · checked Sep 5, 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: payment systems law 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 law firms.
- Partial evidence
- Its own public description names part of payment systems law 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 law 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 117 payment systems law firms worldwide
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Payment systems law firms worldwide at a glance
As of Sep 5, 2026Companies by employee count
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 law 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.
- Coverage
- 2 countries, largest first: the United States, the United Kingdom. Country and city lists for payment systems law firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “payment systems law 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 law 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 law firms, 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, 399 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 law firms by location
2 lists · largest firstEvery Payment systems law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 law 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 law firms are there worldwide?
RevenueBase identified 117 payment systems law firms 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?
Vizant, headquartered in Houston, tops this list with the largest team on record.
Which country has the most payment systems law firms?
The United States leads with 71 companies, followed by the United Kingdom (46). Every payment systems law firms list by country and city is linked on this page.
Which city has the most payment systems law firms?
London leads with 25 headquartered companies, followed by Austin (4) and Scottsdale (3).
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 399 verified decision-maker contacts tracked across these 117 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.