Seamless US Expansion for UK Businesses London & New York | Specialist Cross-Border Accountants
At ExpandInUSA,We remove the complexity of transatlantic expansion. From entity setup to ongoing compliance, we’re your single partner for accounting, tax, and strategic growth in the United States.
Our Divisions
BUSINESSES EXPANDING TO THE US
BUSINESSES EXPANDING TO THE US
US BUSINESSES EXPANDING TO THE UK
US BUSINESSES EXPANDING TO THE UK
STARTUPS & SCALE-UPS
STARTUPS & SCALE-UPS
ESTABLISHED COMPANIES & GROUPS
ESTABLISHED COMPANIES & GROUPS
US Expansion Made Simple for UK Businesses
London Accountants | New York Experts | Your Single Partner for US Success
We remove the complexity of US expansion. From Delaware LLC formation to multi-state tax compliance—we handle everything. Join 200+ UK businesses that successfully expanded to the US with our guidance.
No more confusing state regulations, complex tax codes, or banking hurdles. We’re your end-to-end solution for seamless US market entry.
Our Services
Specialist US & UK Tax Services
As dedicated US UK tax accountants in London, we provide comprehensive cross-border solutions for individuals, expatriates, and businesses. Our expertise ensures full compliance with both IRS and HMRC requirements while helping clients optimise their tax position across jurisdictions.
US Market Entry & Structuring
Establish your US presence from day one with strategic entity selection and effective ownership structuring.
Company Formation: LLC, C-Corp, S-Corp setup
Tax Residency & Permanent Establishment Planning
Cross-Border Entity Alignment
Strategic Expansion Roadmapping
State Selection & Registration
US & UK Tax Compliance
Complete cross-border tax management that keeps you compliant on both sides of the Atlantic.
US Federal & State Tax Compliance
UK Corporate Tax & Withholding
Transfer Pricing & BEPS Compliance
Double Tax Treaty Applications
FATCA/FBAR Reporting
Accounting & Financial Reporting
US GAAP, UK GAAP, and IFRS expertise to ensure your financials work internationally.
US GAAP vs UK GAAP/IFRS Reconciliation
Management Reporting & KPI Dashboards
Cash Flow Modelling & Forecasting
Budgeting & Scenario Planning
Multi-Currency Accounting
Payroll & Employment Compliance
Seamless US payroll setup and management for your stateside team.
Multi-State Payroll Setup & Processing
Employee vs Contractor Classification
US Benefits Planning (401(k), Health Insurance)
UK Expatriate Tax & Payroll
Social Security Treaty Applications
Sales Tax & Indirect Tax Compliance
Navigate America’s complex state sales tax landscape with confidence.
Economic & Physical Nexus Analysis
Multi-State Sales Tax Registration
Filing & Compliance Management
Tax Exposure Assessment
Strategic Mitigation Planning
Why ExpandInUSA?
Why 200+ UK Businesses Chose Us for US Expansion
✓ Dual-Country Expertise – Dedicated teams in London & New York
✓ All-in-One Service – Formation, accounting, tax, payroll in one package
✓ Fixed Pricing – Transparent packages with no hidden fees
✓ 90% Faster Setup – Streamlined US company formation process
✓ Banking Made Easy – US business accounts for non-residents
✓ Ongoing Support – Monthly accounting and compliance management“We’ve helped UK businesses process $50M+ in US revenue and counting!
- US & UK Focus
- IRS & HMRC Compliance
- Expatriate Expertise
- Personalised Approach
- Comprehensive Coverage
- Trusted Reputation
We specialise in simplifying complex US-UK tax matters, ensuring full compliance with IRS and HMRC while delivering tailored solutions our clients trust..
Your Complete US Expansion Toolkit
Comprehensive U.S. Business Setup – Tailored for International Clients
✅ US Company Formation (LLC/C-Corp)
✅ EIN & Business Banking Setup
✅ First-Year Tax Compliance
✅ Monthly Bookkeeping & Reporting
✅ Dedicated Account Manager
✅ Compliance Deadline Tracking
Essential Add-ons:
📊 US Payroll & Compliance – Multi-state payroll processing
🏛️ Multi-State Tax Registration – Sales tax nexus management
💰 Sales Tax Management – Filing in all 50 states
📈 Growth Advisory – Strategic expansion planning
🎁 Limited Time Offer: Free US Tax Consultation with Every Setup
Music
Entertainment
Film and tv
Theater
influencers
Sports Professionals
interior design
interior design
Luxary Retails
Fashion
Art and Galleries
Adevertising and Marketing
INDUSTRY EXPERTISE
Industry-Specific US Expansion Success
Tech Startups:
Helped 50+ UK tech companies secure US funding and establish Delaware C-Corps for investor readiness
E-commerce Brands:
$30M+ US sales processed for UK brands with multi-state sales tax compliance
Professional Services:
Multi-state licensing solved for UK consultants, agencies, and service providers
Manufacturing:
Supply chain optimisation and transfer pricing for UK manufacturers
We speak your industry language and understand your specific US expansion challenges
07 OCT 2025 | TAX GUIDE
A Complete Guide to Filing U.S. Taxes from the UK
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
07 OCT 2025 | TAX GUIDE
A Complete Guide to Filing U.S. Taxes from the UK
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
07 OCT 2025 | TAX GUIDE
A Complete Guide to Filing U.S. Taxes from the UK
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
07 OCT 2025 | TAX GUIDE
A Complete Guide to Filing U.S. Taxes from the UK
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
INSIGHTS
Latest News
From headline-making Budget announcements to government tax reforms and worldwide events, we address the key financial issues and emerging trends, weighing up their potential implications for creative, corporate, owner managed business and private clients, alongside sharing our in-depth industry knowledge, people updates and company news.
Get in Touch
ExpandInUSA — your trusted partner for business formation in the USA. We support foreign founders from around the world. Contact us now to establish an LLC in the USA for non-residents, obtain your EIN, and begin your U.S. journey.