
Clean Technology Industry
With Welch LLP’s financial expertise by your side, you can strengthen the business foundation behind your clean technology initiatives as we work together toward a more sustainable future.
In the clean technology sector, innovation moves quickly and the accounting firm you partner with needs to understand both the pace of growth and the complexity behind it. Welch works with entrepreneurial private and public companies across the clean tech landscape, supporting businesses from early-stage development through to scale, investment, and exit. We help our clients navigate every stage with integrated accounting, assurance, tax, and advisory services tailored to the realities of a rapidly evolving, globally connected industry. With an in-house US tax group and access to international expertise through BKR International, Welch is well positioned to support clean tech companies doing business across borders.



Clean Technology Verticals We Serve
- Carbon Management and Removal
- Clean and Renewable Energy
- Clean Water and Wastewater Solutions
- Climate Resilience and Adaptation
- Energy Storage and Alternative Fuels
- Environmental Software, Monitoring and Analytics
- Food Security and Sustainable Agriculture
- Sustainable Buildings and Materials
- Sustainable Transportation and Mobility
- Waste Management and Circular Economy
Your Local Partner for Accounting, Tax, and Strategic Advice
Discover Why Our Clients Choose Welch LLP
Services
What We Do
Accounting & Tax Services for Clean Technology Companies
Cleantech Accounting & Tax
Digital Services for Cleantech Companies
SR&ED and Innovation Tax Credits for Cleantech Companies
Cleantech Advisory | M&A
Assurance and Accounting
- Audit and assurance (ASPE, US GAAP, IFRS)
- Notice to reader/compilation engagement
- Public and private company audits
- Accounting conversions (ASPE to IFRS or US GAAP)
- Financial forecasting and advisory
Tax
- Corporate tax in Canada and the US
- Full service Scientific Research and Experimental Development (SR&ED) claims
- Full-service Canadian and US tax compliance
- Tax planning, structuring and exit planning strategies
- Tax planning for founders
- Indirect taxes (sales tax, payroll tax, etc.)
- US tax, cross border, state and local tax
- International tax planning
- Expatriate tax – personal tax for non-residents working abroad
- Shareholder tax planning, trust and estates, personal tax for business owners
Digital Services for Cleantech Companies
- Comprehensive Digital Services & Solutions
- Strategy, Data & AI
- Technology & Digital Strategy
- Data Strategy & AI
- Cybersecurity
- Cyber Strategy & Threat Management
- Cloud & Infrastructure Security
- Resilience & Response
- Penetration Testing
- Risk & Compliance
- Technology Risk
- Compliance, Audit & Controls
- SOC (1, 2, 3)
- Privacy
SR&ED and Innovation Tax Credits
- SR&ED – Support for clean technology innovation across areas such as advanced manufacturing, cleantech hardware, energy systems, environmental technologies, and process improvements
- Other incentives – Access to federal and provincial programs, including sustainability, energy efficiency, apprenticeship, and green innovation credits
- OIDMTC – Ontario Interactive Digital Media Tax Credit for qualifying digital platforms, including those supporting clean technology solutions and environmental impact initiatives
Cleantech Business Advisory
- Support with corporate transactions (private financing, buy and sell, M&A, public financing)
- Implications of third-party investments
- Valuations support
Internal Control Advisory and IPO Readiness and Support
- Internal control advisory (SOX, 52-109, etc.)
- Strategic advisory for Canadian go-public transactions
- Valuations
- Temporary staff assignment
- Accounting conversion support
- Financial statement and external audit preparation support
- Corporate governance (audit committee charters)
Our Cleantech Industry Specialists
More About Clean Tech Services
Frequently
Asked
Questions
What is Clean Technology Accounting?
Clean technology accounting is a specialized area of accounting that supports businesses developing sustainable products, services, and technologies. Unlike traditional accounting, it addresses the unique financial and regulatory requirements of clean technology companies, including research and development (R&D) spending, government funding, grant reporting, Scientific Research and Experimental Development (SR&ED) tax credits, capital investment, and rapid business growth.
We provide clean technology accounting services to businesses across Ontario, with dedicated teams in Ottawa and Toronto supporting startups, scale-ups, and established cleantech companies. Our professionals deliver accounting, tax, assurance, and advisory services, including financial reporting, tax planning, SR&ED claims, and strategic guidance to help innovative businesses grow, attract investment, and achieve long-term success.
Why do Cleantech companies need specialized accountants?
Clean technology companies often operate in a fast-changing environment with unique financial challenges that require industry-specific expertise. Specialized accountants understand the complexities of managing R&D investments, securing government incentives, complying with evolving regulations, and preparing for funding rounds or international expansion.
Whether you’re launching a startup or scaling an established clean technology business, experienced accountants can help you optimize cash flow, maximize available tax credits, maintain compliance, and provide the financial insights needed to support sustainable growth.
How can accounting support clean technology startups seeking investment?
Investors expect clean technology startups to demonstrate strong financial management alongside innovative technology. Professional accounting support helps businesses build investor confidence by producing reliable financial statements, developing realistic financial forecasts, tracking key performance indicators, maintaining accurate records, and preparing for due diligence.
Welch LLP works with startups throughout the investment lifecycle by providing financial reporting, audit and assurance services, full-service Canadian and US tax compliance, tax planning and structuring, SR&ED and investment tax credit claims, valuation support, and strategic advisory services that help companies become investment-ready and position themselves for future growth opportunities.
How does Welch LLP support cross-border expansion for Clean Technology companies?
As clean technology companies expand into international markets, they often encounter complex tax, compliance, and reporting requirements. Welch LLP supports businesses operating across Canada, the United States, and other global markets through integrated accounting, tax, and advisory services.
Our in-house U.S. tax specialists assist with cross-border tax planning, corporate structures, state and local tax considerations, and regulatory compliance. Through our membership in BKR International, we also provide access to trusted accounting professionals in more than 80 countries, helping clean technology companies confidently manage international growth while maintaining local expertise and global reach.
ESTIMATE YOUR TAX CREDITS & REFUND
Scientific Research and Experimental Development (SR&ED)
Use Welch LLP’s SR&ED calculator to determine your potential SR&ED tax credit. Your business and bottom line will thank you.


Let us make Cleantech accounting simple so you can focus on driving climate impact.
Are You Ready to Talk to a Cleantech Specialist?
Get in touch, tell us your needs and we’ll assign an industry specialist to your organization.






