Company lists · Data refreshed September 2026
Top 25 Invoice processing outsourcing companies worldwide
RevenueBase identified 866 invoice processing outsourcing companies worldwide as of September 2026 and tracks 16,489 professional contacts across them, including 3,278 with verified work emails. India is the largest market and Sao Paulo the largest hub.
This list covers invoice processing outsourcing companies 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 28, 2026. Country and city lists for invoice processing outsourcing companies 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 invoice processing outsourcing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 831 contacts → | ||||
Partial evidence “IQ BackOffice is the leading accounting Business Process Outsourcing and Automation provider, offering 99.97% quality and up to 68% savings to companies around the globe.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 784 contacts → | ||||
Strong evidence “Medius links invoice capture, processing, and payment to replace the worry and wondering of managing AP with calm and confidence.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 768 contacts → | ||||
Indirect evidence “Somos GIRE, una empresa con más de 30 años de experiencia en el mercado de procesamiento inteligente de información y en el desarrollo de soluciones de cobranzas y pagos para…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 527 contacts → | ||||
Partial evidence “Cameo Corporate Services Limited is a Business Process Outsourcing firm headquartered in Chennai, India.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 359 contacts → | ||||
Partial evidence “Leading AP automation software | Reduce processing cost by 90%| For large and mid-sized companies | Our customers include DHL, Danone, HSBC, Kuehne + Nagel, and Air France KLM.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 310 contacts → | ||||
Partial evidence “BDO Solutions is a Business Services & Outsourcing company located in Mauritius and forms part of the international BDO network, which extends across 166 countries and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 309 contacts → | ||||
Partial evidence “Anion is an ISO 27001:2013 and HIPAA compliant organization operating in the field of Healthcare Services, providing Back Office data processing (BPO) for Providers/Physicians…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 300 contacts → | ||||
Partial evidence “As part of GEP, a global leader in AI-driven procurement and supply chain solutions, we deliver e-invoicing, O2C and P2P messaging, AP automation and advanced procurement…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 298 contacts → | ||||
Indirect evidence “At Circulus, we provide Product and Service Offerings designed to Optimize, Augment, and Automate AP Processes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 247 contacts → | ||||
Partial evidence “Ropo is the Nordic market leader and original pioneer, transforming the invoicing flow end-to-end.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 207 contacts → | ||||
Partial evidence “Nanonets agents understand key details in files – like invoices, POs, BoL & clinical documents – work through complex processes and act with transparency, making them the most…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 199 contacts → | ||||
Indirect evidence “Apostamos por la Transformación para adaptarnos y ser flexibles a las necesidades de nuestros clientes y fortalecer cada vez más nuestros mecanismos de seguimiento y trazabilidad…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 197 contacts → | ||||
Partial evidence “Artec provides outsourcing for F&A and Procurement processes by using state of the art technologies and lean thinking approach for business flow re-engineering.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 186 contacts → | ||||
Indirect evidence “ℹ Sterling – The Missing Piece to Your Business Success Looking for seamless customer service, smarter credit management, or efficient debt recovery?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 180 contacts → | ||||
Indirect evidence “We’re on a mission to simplify AP and payment processes and make them (actually) enjoyable.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 178 contacts → | ||||
Indirect evidence “Allzone is a leading offshore Medical Billing Company that provides billing, coding and RCM (revenue cycle management) services to clients across USA.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 160 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 155 contacts → | ||||
Indirect evidence “BST es una empresa que entrega soluciones especializadas de BPO, combinando tecnología, experiencia y un acompañamiento cercano para transformar procesos clave de negocio.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 134 contacts → | ||||
Partial evidence “Vertaccount is a boutique Finance and Accounting Outsourcing provider with offices and affiliates in the United States, Australia, Singapore and the Philippines.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 132 contacts → | ||||
Indirect evidence “Regulus Group is the premier provider of outsourced billing and payment services designed to accelerate cash, improve corporate productivity and reduce overall management costs.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 130 contacts → | ||||
Strong evidence “Webexpenses is a leading provider of Expense Management, Invoice Processing, and Payments solutions, helping businesses of all sizes across 70+ countries streamline processes and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 124 contacts → | ||||
Partial evidence “Since 1994, DataServ has delivered Accounts Payable invoice automation solutions that enable accounting teams to eliminate data entry, increase accuracy, and focus on higher-value…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 108 contacts → | ||||
Indirect evidence “Organização Mecano Contábil” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 92 contacts → | ||||
Indirect evidence “TaurusQuest is a provider of outsourced services in financial accounting/analysis, legal services and other back office processes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 90 contacts → | ||||
Partial evidence “Since 1996, InfoSend has provided innovative solutions for organizations seeking eBilling, ePayment, Data Processing, and BillPrint & Mail services.” Source: RevenueBase Database · checked Sep 28, 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: invoice processing outsourcing companies. 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 invoice processing outsourcing companies.
- Partial evidence
- Its own public description names part of invoice processing outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name invoice processing outsourcing companies. 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 866 invoice processing outsourcing companies worldwide
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Invoice processing outsourcing companies worldwide at a glance
As of Sep 28, 2026Companies by employee count
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 invoice processing outsourcing 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.
- Coverage
- Every country. Country and city lists for invoice processing outsourcing companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “invoice processing outsourcing 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 invoice processing outsourcing 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 invoice processing outsourcing companies, 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, 3,278 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 28, 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.
Invoice processing outsourcing companies by location
4 lists · largest firstEvery Invoice processing outsourcing companies 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 invoice processing outsourcing 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 invoice processing outsourcing companies are there worldwide?
RevenueBase identified 866 invoice processing outsourcing companies 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?
IQ Backoffice, headquartered in Taguig Manila, tops this list with the largest team on record.
Which country has the most invoice processing outsourcing companies?
India leads with 182 companies, followed by the United States (147) and Brazil (105). Every invoice processing outsourcing companies list by country and city is linked on this page.
Which city has the most invoice processing outsourcing companies?
Sao Paulo leads with 23 headquartered companies, followed by Ahmedabad (19) and Noida (15).
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 3,278 verified decision-maker contacts tracked across these 866 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 28, 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.