Tax Solutions for Tech & SaaS Companies
Technology and SaaS companies face unique tax challenges when operating across the US and UK, from complex revenue recognition rules to international tax compliance and stock option taxation. Managing these complexities requires specialized knowledge of both IRS and HMRC regulations.
We help tech and SaaS companies structure their operations for tax efficiency, manage international income, ensure compliance with both US and UK tax authorities, and navigate the evolving regulatory landscape. Whether you're a startup or established software company, our advisors understand the specific challenges of the technology sector.
Our team provides personalized guidance tailored to the fast-evolving tech landscape, ensuring you can focus on product development while we handle your cross-border tax obligations in both the United States and the United Kingdom.
Key Industry Insights:
£5.8BN
UK SaaS sector revenue in 2023, with significant growth in cross-border operations.
Source: UK Tech Industry Report 2023
67%
Percentage of UK SaaS companies with US operations requiring dual jurisdiction tax planning.
Source: International SaaS Business Survey 2023
33%
Average tax savings for SaaS companies through proper international structuring and compliance.
Source: SaaS Tax Planning Guide 2023
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.
Technology and SaaS companies operating between the US and UK face complex revenue recognition, stock option taxation and international structuring. We align accounting policies, plan equity awards, secure R&D relief and manage GILTI and indirect tax so your software business scales compliantly across both jurisdictions.
Key Takeaways
- SaaS revenue is recognised over the subscription period in both systems
- US and UK equity schemes (ISO/NSO vs EMI) are taxed very differently
- US owners of a UK SaaS company may face GILTI on retained profits
- Digital sales can trigger both UK/EU VAT and US state sales tax
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 & SaaS Tax — Frequently Asked Questions
How is SaaS revenue recognised for US and UK tax purposes?
Subscription and multi-period software revenue is generally recognised over the service period rather than when cash is received, and US GAAP and UK accounting standards can differ in the detail. Because taxable profit follows the accounts, mismatched recognition can shift when profit is taxed in each country. We align your accounting policies so US and UK results reconcile.
How are employee stock options taxed across the US and UK?
Option taxation differs sharply between the systems. US options may be ISOs or NSOs with their own rules, while UK tax-advantaged schemes such as EMI have separate conditions and timing. For employees who are US persons or move between countries, the same option can be taxed by both authorities. Coordinated planning around grant, vesting and exercise is essential.
Can my technology company claim UK R&D tax relief?
Qualifying UK companies undertaking eligible software and technology development can claim R&D relief, which can reduce corporation tax or, for some, provide a cash benefit. Genuine advances in technology and resolving technical uncertainty are key tests. For US-connected groups, we also consider how any UK benefit interacts with your US tax position.
Do US owners of a UK SaaS company face GILTI?
Yes, potentially. A US person owning a controlled UK company can be exposed to the GILTI regime, which may tax the UK company's profits currently in the US. Fast-scaling SaaS businesses with retained profits are particularly affected. We model GILTI alongside UK corporation tax and available credits so profitable growth does not create surprise US tax.
How does selling software cross-border trigger VAT and US sales tax?
Digital and SaaS sales can create VAT obligations in the UK and EU and sales tax obligations across US states, each with its own rules on where a supply is taxed and when you must register. Selling into both markets can mean registrations on both sides. We map where your customers create obligations so indirect tax is handled correctly.
How should a startup structure its US and UK entities?
The right structure depends on where your founders, customers, investors and developers are, and on future fundraising. Choices around a US parent versus UK parent, subsidiaries, and IP ownership affect corporation tax, GILTI, R&D relief and investor tax reliefs. Deciding early — before raising or scaling — avoids costly restructuring later.
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.