Company lists · Data refreshed September 2026

Top 17 Business process outsourcing accounting services based in Sri Lanka

RevenueBase identified 170 business process outsourcing accounting services headquartered in Sri Lanka as of September 2026 and tracks 2,049 professional contacts across them, including 168 with verified work emails. Colombo is the largest hub.

This list covers business process outsourcing accounting services headquartered in Sri Lanka, 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.

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
170Companies
2,049Contacts tracked
168Verified emails
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The 17 largest business process outsourcing accounting services based in Sri Lanka

Ranked by team size
Top 17 of 170 business process outsourcing accounting services based in Sri Lanka, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to business process outsourcing accounting services: 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 evidenceColombo, Sri LankaHQ checked Sep 21, 2026501-1,000168 contacts →

Partial evidence

“WNS (Holdings) Limited (NYSE: WNS), is a leading global Business Process Management (BPM) company.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceColombo 05., Sri LankaHQ checked Sep 21, 202651-200131 contacts →

Indirect evidence

“Outdesk Group was born with a vision to create affordable online BPO solutions for small and mid-sized companies around the world.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceColombo 01, Sri LankaHQ checked Sep 21, 2026201-500106 contacts →

Partial evidence

“A leader in transforming business operations for the better through people, process, and technical brilliance.”

Source: RevenueBase Database · checked Sep 21, 2026
4Strong evidenceColombo, Sri LankaHQ checked Sep 21, 202651-20072 contacts →

Strong evidence

“Tellida (Pvt) Ltd is a global outsourcing company providing Legal Process Outsourcing (LPO), Finance & Accounting Outsourcing (FAO), Contact Centre services, and Remote Business…”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceColombo, Sri LankaHQ checked Sep 21, 202611-5070 contacts →

Indirect evidence

“When you start a passion project & you turn it into a company, you quickly realized that you've signed on for a lot more paperwork than you had in mind.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceWattala, Sri LankaHQ checked Sep 21, 202611-5033 contacts →

Partial evidence

“Global Bookkeeping Solutions (GBS) is a premier chartered accounting firm from Sri Lanka, specializing in comprehensive financial services for clients in Australia, the UK, the…”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceColombo 10, Sri LankaHQ checked Sep 21, 2026501-1,00032 contacts →

Indirect evidence

“Contact Center Solutions Provider”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceColombo 04, Sri LankaHQ checked Sep 21, 202611-5024 contacts →

Partial evidence

“SISKA is one of the leading providers of Accounting, Auditing and Secretarial services, offering a wide range of back office, customer care & support, virtual secretary and…”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceColombo 3, Sri LankaHQ checked Sep 21, 202611-5019 contacts →

Partial evidence

“Team Collaboro Pvt Ltd is a premier Strategic Delegation Partner dedicated to assist accountancy practices with top-quality services in bookkeeping, accounting and taxation.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceColombo, Sri LankaHQ checked Sep 21, 202611-5014 contacts →

Indirect evidence

“Envic Global is a BPO located in Sri Lanka, providing comprehensive solutions for inbound and outbound sales, customer care, and back-office operations.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceColombo, Sri LankaHQ checked Sep 21, 20261-1011 contacts →

Indirect evidence

“FinAccDirect provides tailored services and independent products according to the prioritised needs of our clients.”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceKelaniya, Sri LankaHQ checked Sep 21, 202611-5010 contacts →

Partial evidence

“Investlab Business Solutions is a innovative and modernized company based in Sri Lanka provide various professional services include Legal, Accounting and Finance, Expert Services…”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceColombo, Sri LankaHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

“Do you like to hear an interesting story about your company?”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceNegombo, Sri LankaHQ checked Sep 21, 20261-108 contacts →

Partial evidence

“JEMAJO Accountants, is a premium professional services firm catering to the finance and accounting needs of small- and medium-enterprises (SMEs), CFOs, accounting firms, and…”

Source: RevenueBase Database · checked Sep 21, 2026
15Strong evidenceColombo, Sri LankaHQ checked Sep 21, 202651-2003 contacts →

Strong evidence

“Know Tech Solutions is a premier Business Process Outsourcing (BPO) company specializing in telemarketing and customer service support.”

Source: RevenueBase Database · checked Sep 21, 2026
16Strong evidenceColombo, Sri LankaHQ checked Sep 21, 20261-102 contacts →

Strong evidence

“The Siren - Pug in to get noticed The Siren is a groundbreaking Business Process Outsourcing (BPO) company that was formed in 2020 to assist the marketing heads in companies to…”

Source: RevenueBase Database · checked Sep 21, 2026
17Strong evidenceNawala, Sri LankaHQ checked Sep 21, 202611-501 contacts →

Strong evidence

“Rigor Consulting delivers conclusive finance, accounting, and payroll process outsourcing services to enable and empower its clientele to focus on its business.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 17 of 170 business process outsourcing accounting services based in Sri Lanka

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 168 reachable decision-makers.

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Business process outsourcing accounting services based in Sri Lanka at a glance

As of Sep 21, 2026
8.2%Verified-email coverage
12.1Average contacts per company
11-50Median size (employees)
42.4%Largest-city concentration · Colombo
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
52
11-50
78
51-200
34
201-500
4
501-1,000
2

Email recency for this list is measured worldwide rather than for Sri Lanka, so it is reported there. Company counts and contact totals on this page are exact for Sri Lanka, over 170 companies.

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 business process outsourcing accounting services, 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 Sri Lanka whose own description of what they do matches “business process outsourcing accounting services”. 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 business process outsourcing accounting services), 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 business process outsourcing accounting services, and records with no verified work email. Companies headquartered outside Sri Lanka 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, 168 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.

Business process outsourcing accounting services by metro

  • Business process outsourcing accounting services in Colombo72

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 business process outsourcing accounting services, 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 business process outsourcing accounting services are there based in Sri Lanka?

RevenueBase identified 170 business process outsourcing accounting services headquartered in Sri Lanka 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?

WNS - SRI Lanka, headquartered in Colombo, tops this list with the largest team on record.

Which city has the most business process outsourcing accounting services?

Colombo leads with 72 headquartered companies, followed by Nugegoda (6) and Piliyandala (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 168 verified decision-maker contacts tracked across these 170 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.