List of SIEG Iris Customers
São Paulo, 04548-005,
Brazil
Since 2010, our global team of researchers has been studying SIEG Iris customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased SIEG Iris for Tax Management from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using SIEG Iris for Tax Management include: Thomson Reuters Brazil, a Brazil based Professional Services organisation with 2500 employees and revenues of $700.0 million, Pedro Nery, a Brazil based Education organisation with 1250 employees and revenues of $188.0 million, Sindicont, a Brazil based Non Profit organisation with 110 employees and revenues of $28.0 million, RH Assessoria Contabil, a Brazil based Professional Services organisation with 85 employees and revenues of $16.0 million and many others.
Contact us if you need a completed and verified list of companies using SIEG Iris, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
The SIEG Iris customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
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| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
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Pedro Nery | Education | 1250 | $188M | Brazil | SIEG | SIEG Iris | Tax Management | 2024 | n/a |
In 2024, Pedro Nery implemented SIEG Iris as its Tax Management solution. The deployment centered on SIEG Iris to automate tax calculation, compliance workflows, electronic filing, and consolidated tax reporting for the company’s finance and tax functions.
Configuration emphasized tax automation and workflow orchestration capabilities consistent with SIEG product descriptions, with inferred usage of SIEG IriS and HüB modules for tax and financial automation to centralize tax data, standardize return generation, and enforce role-based security controls. SIEG Iris was used to instrument audit trails and access controls that align with tighter security and compliance requirements.
Operational scope focused on finance, tax, and client advisory workflows where automation reduced manual processing and freed staff to engage more on client relationships. According to a vendor testimonial attributed to Marco Contabilidade Consultiva and Pedro Nery on SIEG marketing materials, reported outcomes included improved security and additional time for client-facing activities.
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RH Assessoria Contabil | Professional Services | 85 | $16M | Brazil | SIEG | SIEG Iris | Tax Management | 2023 | n/a |
In 2023, RH Assessoria Contabil deployed SIEG Iris to strengthen its Tax Management capabilities for accounting office operations in Brazil. The deployment is centered on automating monitoring of e-CAC messages, certidões and other tax pendências across the firm’s client portfolios, a usage confirmed by the vendor listing on the company website.
SIEG Iris is configured to provide continuous monitoring, automated alerting and certificate management together with portfolio-level case tracking for tax pendências, reflecting core Tax Management functional workflows used by accounting teams. The implementation emphasizes automated ingestion of e-CAC communications, structured storage and retrieval of certidões, and status tracking at the client record level to support compliance and reporting processes.
Operational coverage is focused on the firm’s tax and finance processes across its Brazil client base, with accounting and compliance teams using SIEG Iris to coordinate task assignment and follow up on pending fiscal items. Governance around the system centers on process orchestration and workflow assignment within the application, and the vendor listing on RH Assessoria Contabil’s site serves as confirmation of product usage.
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Sindicont | Non Profit | 110 | $28M | Brazil | SIEG | SIEG Iris | Tax Management | 2025 | n/a |
In 2025, Sindicont Criciúma signed a convenio with SIEG Soluções Inteligentes to offer SIEG HüB and the SIEG Iris module as benefits to its associated accounting firms. SIEG Iris is being provisioned to member firms as a Tax Management application targeting finance and tax process automation across accounting offices in the Santa Catarina region. The agreement reflects organizational adoption and a partnership model where Sindicont extends platform access and commercial terms to affiliated accounting firms.
Deployment and configuration are focused on delivering SIEG Iris capabilities common to Tax Management solutions, including compliance workflow automation, tax filing orchestration, and obligation and document tracking to support finance and tax process areas. The SIEG HüB and SIEG Iris components are bundled in the offering for member firms, with configuration work scoped at the firm level and access structured around accountant and manager roles. Operational coverage is explicit to member accounting offices affiliated with Sindicont Criciúma in the Santa Catarina region, with Sindicont acting as the contracting body that governs member access and benefits administration. The engagement explicitly aims to increase efficiency and productivity across local accounting offices through automation of tax and compliance processes.
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Thomson Reuters Brazil | Professional Services | 2500 | $700M | Brazil | SIEG | SIEG Iris | Tax Management | 2024 | n/a |
In 2024, Thomson Reuters Brazil implemented SIEG Iris as part of a Tax Management initiative. SIEG Iris appears on SIEG marketing materials with Thomson Reuters Brazil cited as a testimonial partner, indicating a collaborative implementation focused on document management integration to streamline fiscal and accounting workflows in Brazil.
The SIEG Iris deployment appears to leverage core Iris capabilities and HüB components to centralize document capture, automate authenticated e-CAC access, and orchestrate tax compliance processes. These functional modules align with Tax Management workflows for document ingestion, classification, retention, and downstream tax filing orchestration.
Integrations referenced in marketing collateral explicitly include Thomson Reuters Domínio and broader Thomson Reuters tax and accounting product lines, creating a linkage between captured source documents and tax compliance engines. Operational coverage is concentrated on fiscal and accounting business functions in Brazil, enabling end to end document flow from capture through compliance submission.
Governance and rollout are described as a collaborative integration between SIEG and Thomson Reuters Brazil, with an emphasis on standardizing document management and capture to support tax compliance processes. The stated objective is to streamline fiscal and accounting workflows through integrated document management and automated access to e-CAC resources using SIEG Iris.
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