Insights

Scale without headcount Adsum targets UK accounting practices with an AI-driven automation platform that streamlines data validation, input checks, reconciliations, and period-end close. The opportunity for sales teams is to position OpenTax as a scalable solution that reduces the need for additional staff while maintaining accuracy across multiple clients.

Cross-client consistency OpenTax offers a unified methodology across entities, enabling practices to apply the same processes to every client. This can be leveraged to upsell to firms needing standardized workflows, reducing training and onboarding friction for new clients or acquired practices.

Rapid value through Instant VAT Recent announcements highlight Instant VAT Refund capabilities and a VAT facility investment. This suggests a market interest in cashflow optimization and faster VAT processes, presenting a cross-sell path for OpenTax enhancements or bundled VAT-related automation.

Financial growth signals With reported revenue between one and ten million and a funding history including a five million-dollar raise, Adsum demonstrates growth momentum and investor confidence. This can be used to engage mid-market accounting firms seeking proven, well-funded fintech partners for scalable automation.

UK focus with broad potential Adsum serves UK practices of varying sizes and has existing partnerships, indicating a strong regional foothold. Sales outreach can target mid-tier firms looking to modernize legacy processes, while highlighting integrations with common tools in their tech stacks to ease adoption.

Adsum Tech Stack

Adsum uses 8 technology products and services including Hotjar, Linkedin Insight Tag, Amazon Web Services, and more. Explore Adsum's tech stack below.

Adsum's Email Address Formats

Adsum uses at least 1 format(s):
Adsum Email FormatsExamplePercentage
First.Last@adsum-works.comJohn.Doe@adsum-works.com
100%

Frequently Asked Questions

What is Adsum's official website and social media links?

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Adsum's official website is adsum-works.com and has social profiles on LinkedIn.

How much revenue does Adsum generate?

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As of August 2026, Adsum's annual revenue is estimated to be $1M - $10M.

What is Adsum's NAICS code?

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Adsum's NAICS code is 52 - Finance and Insurance.

How many employees does Adsum have currently?

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As of August 2026, Adsum has approximately 29 employees across 4 continents, including EuropeAsiaAfrica. Key team members include Cto: B. R.Head Of Product: A. V.Board Director: H. M.. Explore Adsum's employee directory with LeadIQ.

What industry does Adsum belong to?

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Adsum operates in the Financial Services industry.

What technology does Adsum use?

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Adsum's tech stack includes HotjarLinkedin Insight TagAmazon Web ServicesCookieYesHubSpot Cookie Policy BannerShopifyGoogle WorkspaceTrustpilot.

What is Adsum's email format?

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Adsum's email format typically follows the pattern of First.Last@adsum-works.com. Find more Adsum email formats with LeadIQ.

How much funding has Adsum raised to date?

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As of August 2026, Adsum has raised $17M in funding. The last funding round occurred on May 23, 2022.

When was Adsum founded?

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Adsum was founded in 2019.
Adsum logo

Adsum

Financial ServicesEngland, United Kingdom11-50 Employees

Adsum is a financial services company headquartered in London, United Kingdom, located at 1 Lyric Square, London, England W6 0NB, and it employs 11-50 people. It develops AI agents that run core accounting workflows for UK practices. Its OpenTax product serves as an orchestration layer across existing technology stacks, automating data validation, input checks, reconciliations, and period-end close while providing a consistent methodology across entities. Adsum serves accounting firms of all sizes across the UK, helping them scale without adding headcount, and its technology is trusted by more than 1,000 practices. Recent news coverage indicates financing activity and VAT facility-related initiatives, as well as product developments such as the Instant VAT Refund service.

Section iconCompany Overview

NAICS Code
52 - Finance and Insurance
Founded
2019
Employees
11-50

Section iconFunding & Financials

  • $17M

    Adsum has raised a total of $17M of funding over 2 rounds. Their latest funding round was raised on May 23, 2022as a seed.

  • $1M - $10M

    Adsum's revenue is estimated to be in the range of $1M - $10M

Section iconFunding & Financials

  • $17M

    Adsum has raised a total of $17M of funding over 2 rounds. Their latest funding round was raised on May 23, 2022as a seed.

  • $1M - $10M

    Adsum's revenue is estimated to be in the range of $1M - $10M

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