INTERNATIONAL ACCOUNTANTS & US–UK TAX EXPERTS FOR TECH & SOFTWARE COMPANIES
US–UK Tax Advisors are expert international accountants for tech and software companies, providing specialist US and UK tax services for startups, SaaS providers, and global technology firms. We handle HMRC and IRS compliance, optimise cross-border tax structures, and support R&D tax relief — helping tech businesses grow efficiently while staying compliant and profitable across markets.
International Accounting and Tax Solutions for Tech and SAAS
US–UK Tax Advisors are expert international accountants for tech and software companies, helping startups, SaaS providers, and digital innovators manage finances across the United States and the United Kingdom. From cloud computing and app development to enterprise software and digital platforms, our dual-qualified team ensures every financial process remains compliant with both HMRC and IRS regulations while optimising your international operations.
As specialist US–UK tax advisors for technology and software businesses, we simplify complex cross-border accounting through precise financial reporting, R&D tax relief, and efficient corporate structuring. Our experts also manage transfer pricing, intellectual property taxation, and international compliance, helping tech firms minimise tax exposure, reduce risk, and reinvest profits into innovation and growth.
Whether you’re a UK software startup expanding into the U.S. or a U.S. tech company entering the UK market, US–UK Tax Advisors deliver strategic, transparent, and fully compliant financial solutions — allowing you to focus on scaling technology while we handle your global accounting with precision and expertise.
Cross-Border Accounting and Tax Services for Tech and Software Businesses
US–UK Tax Advisors are trusted international accountants for technology and software companies, providing expert financial and tax solutions for businesses operating between the United States and the United Kingdom. Whether you specialise in SaaS, cloud computing, app development, or enterprise software, our dual-qualified team ensures your company remains fully compliant with HMRC and IRS requirements while optimising your international tax structure.
As leading US–UK tax specialists for tech and software businesses, we help companies navigate the financial challenges of international expansion. From claiming R&D tax credits and managing transfer pricing to planning for intellectual property ownership and cross-border reporting, we design efficient structures that minimise risk and maximise profitability.
Whether you’re a UK tech startup scaling into the U.S. or an American software company establishing a UK presence, US–UK Tax Advisors deliver clear, strategic, and compliant financial management. Our international accountants for tech and software handle the complexity of global taxation, allowing your business to grow with confidence while staying financially efficient and future-ready.
Key Industry Insights:
£5.8BN
UK tech and software sector revenue in 2023, with significant growth in cross-border operations.
Source: UK Tech Industry Report 2023
52%
Percentage of UK tech companies with US operations requiring dual jurisdiction tax planning.
Source: International Tech Business Survey 2023
31%
Average tax savings for tech companies through proper R&D relief claims and international structuring.
Source: Technology Tax Planning Guide 2023
International Accounting Services for Tech and Software Businesses
US–UK Tax Advisors are expert international accountants for tech and software companies, helping startups, SaaS providers, and technology innovators manage finances across the United States and the United Kingdom. From cloud computing and software development to app creation and digital platforms, our dual-qualified team ensures your business stays compliant with both HMRC and IRS regulations while maintaining financial efficiency across borders.
As specialist US–UK tax advisors for tech and software businesses, we simplify complex cross-border accounting through accurate financial reporting, R&D tax relief, and strategic corporate structuring. Our experts also manage transfer pricing, intellectual property taxation, and international compliance, helping technology firms minimise tax exposure, streamline operations, and reinvest profits into innovation and growth.
Whether you're a UK tech startup expanding into the U.S. or a U.S. software company entering the UK market, US–UK Tax Advisors deliver clear, strategic, and fully compliant financial solutions. Our international accounting services for tech and software businesses ensure your company operates seamlessly across jurisdictions — so you can focus on building technology while we handle your global finances with precision and care.
Why It's Important to Hire Specialist International Accountants for Tech and Software Businesses
The tech and software industry moves fast, with companies often operating across multiple countries from day one. Managing taxes, reporting, and compliance across the US and UK can be complex and time-consuming. Hiring specialist international accountants for tech and software businesses ensures your finances are handled strategically, your tax exposure is minimised, and your operations stay fully compliant with both HMRC and IRS regulations.
From R&D tax relief and transfer pricing to intellectual property ownership and cross-border income reporting, technology companies face unique financial challenges that require expert guidance. A US–UK tax specialist for tech and software businesses understands how to structure your company efficiently, claim available tax incentives, and avoid double taxation while keeping your innovation at the centre of every decision.
At US–UK Tax Advisors, we bridge the gap between financial compliance and technological growth. Our international accountants for tech and software businesses provide tailored support for startups and established firms alike — managing global reporting, tax planning, and business structuring with precision. We help you stay compliant, reduce risk, and focus on scaling your technology without financial barriers.
Get in Touch
Managing cross-border taxes doesn't have to be complicated. Whether you're a US citizen living in the UK, a UK resident with US tax obligations, or a business operating internationally, our team of specialist US UK tax accountants in London is here to help.
Tech and software companies scaling across the US and UK must plan IP ownership, R&D incentives, transfer pricing, SaaS sales-tax nexus and GILTI. Aligning where profits and substance sit, and applying the US-UK treaty, minimises double taxation while keeping IRS and HMRC obligations compliant.
Key Takeaways
- R&D incentives exist in both countries but can't be claimed twice on the same spend.
- IP location and intercompany licences drive where profits are taxed.
- SaaS sales can create US state sales-tax nexus with no US office.
- US owners of a UK tech firm may face Form 5471 and GILTI reporting.
US–UK Cross-Border Tax: Key Facts
$10,000
Aggregate in foreign accounts at any point in the year triggers a mandatory FBAR (FinCEN Form 114) for US persons.
Source: IRS — FBARWorldwide
US citizens and Green Card holders must file a US return on worldwide income every year, regardless of where they live.
Source: IRS — Citizens Abroad$120,000+
The Foreign Earned Income Exclusion lets qualifying Americans abroad exclude over $120,000 of earned income (indexed annually).
Source: IRS — FEIE31 January
UK Self Assessment online returns and any tax owed are due by 31 January following the 5 April tax year end.
Source: GOV.UK — Self AssessmentTech & Software US-UK Tax — FAQs
How is a UK software company taxed when it expands to the US?
A UK software firm selling into the US is taxed on its US-source profits, often through a US subsidiary that files federal and state returns, while the UK parent reports worldwide profits to HMRC. Whether US activity creates a taxable presence, and how revenue is priced between entities, determines the overall bill. Treaty relief prevents double taxation.
Can I claim R&D tax relief in both the US and UK?
Both countries offer research incentives — the UK's R&D relief schemes and the US R&D tax credit — but each has its own qualifying rules and cannot be claimed twice on the same spend. Where development happens across borders, careful allocation of costs is essential. We help identify qualifying activity and claim correctly in each jurisdiction.
Where should a SaaS business own its intellectual property?
IP location drives where profits are taxed, so it must be decided deliberately, not by accident of where code is written. Moving or licensing IP between US and UK entities triggers transfer-pricing and, potentially, exit-charge rules. We help structure IP ownership and intercompany licences so profits are aligned with substance and defensible to both the IRS and HMRC.
Does selling software create US sales-tax obligations?
Possibly. Since the Wayfair decision, US states can require out-of-state sellers to collect sales tax once they exceed economic-nexus thresholds, and many states now tax SaaS and digital products. A UK company selling to US customers can therefore have US sales-tax duties without any US office. We map your nexus footprint and registration obligations.
What is GILTI and how does it affect US owners of a UK tech firm?
GILTI is a US regime taxing US shareholders on certain profits of their foreign companies, even if not distributed. A US founder or US company owning a UK software business typically files Form 5471 and may owe GILTI, while the UK firm still pays UK corporation tax. We coordinate both to reduce double taxation on retained profits.
Written & reviewed by the US-UK Tax Advisors cross-border tax team — chartered specialists in US and UK taxation, IRS and HMRC compliance, FATCA/FBAR reporting and double-taxation treaty planning.
Last reviewed: July 2026. This page is for general information and is not personal tax advice.