Compliant accounting, tax reporting, and advisory support across multiple jurisdictions.
Helvetios provides professional accounting and tax services tailored to your jurisdiction, whether you operate in Estonia, the UK, Hong Kong, Portugal, the UAE, or manage operations across multiple countries.
We go beyond basic bookkeeping.
Our team supports ongoing compliance, tax optimization, and financial reporting, helping you make informed decisions as your business grows.
From monthly accounting and statutory filings to annual tax returns and audits, we ensure your numbers are accurate, compliant, and under control.
Comprehensive Accounting
Services for Every Jurisdiction
Monthly Bookkeeping & Financial Reporting
We maintain accurate records of all your business transactions, reconcile bank statements, and provide clear monthly financial statements that show exactly where your business stands.
No surprises, no guesswork—just accurate financial data when you need it.
Tax Preparation & Filing
Every country has different tax deadlines, forms, and requirements. We prepare and file all necessary tax returns on time, whether that's corporate income tax in the UK, territorial tax returns in Hong Kong, or annual reports in Estonia.
You'll never miss a deadline or face penalties for late filing.
VAT/GST Services
If you're selling across EU borders or dealing with value-added tax in other jurisdictions, VAT compliance can get complicated fast. We handle VAT registration, quarterly filings, EC Sales Lists, and Intrastat reporting for businesses operating in the European Union and beyond.
Payroll Management
Running payroll internationally involves different tax withholdings, social security contributions, and reporting requirements in each country. We process payroll accurately, handle all tax withholdings, and ensure you're meeting employment tax obligations wherever your team members are located.
Annual Financial Statements & Audits
Many jurisdictions require annual financial statements, and some require full audits depending on your company size and turnover. We prepare financial statements that meet local accounting standards and coordinate audit requirements when necessary.
Tax Planning & Optimization
Good accounting isn't just about compliance—it's about structuring your business finances to minimize tax liability legally. We provide strategic tax planning advice that takes advantage of deductions, credits, and structural opportunities available in your jurisdiction.
VAT Compliance
Navigating international VAT regulations can be complex. We ensure your business remains fully compliant with local tax laws, managing everything from registration to timely return filings across multiple jurisdictions.
Explore VAT Services
Statutory Annual Reporting & Filings
Stay in good standing with regulatory authorities. Our team prepares comprehensive annual reports, including balance sheets and profit & loss statements, ensuring your business meets all yearly filing deadlines.
Professional Audit & Assurance
Enhance your company’s transparency and credibility. Our independent audit services provide deep financial insights and ensure your statements meet the highest statutory and international standards.
Simplified EU VAT with OSS
Selling to customers across the European Union? Streamline your tax reporting with the One-Stop Shop (OSS) scheme. We help you consolidate all your EU B2C VAT obligations into a single, efficient portal.
Estonia Accounting Services
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Estonia’s digital-first approach extends to accounting and tax compliance. If you’ve registered an Estonian company (especially through the e-Residency program), you need accounting services that understand Estonia’s unique tax system.
What makes Estonian accounting different:Â
Estonia uses a unique corporate tax system where retained profits aren’t taxed. You only pay the 20% corporate income tax when distributing dividends. This creates powerful opportunities for reinvestment, but it also means your accounting needs to clearly track retained vs. distributed profits.
Our Estonia accounting services include:
- Monthly bookkeeping aligned with Estonian accounting standards
- Annual reports preparation and filing with the Commercial Register
- Corporate income tax declarations (even when no tax is due)
- VAT registration and quarterly VAT returns for EU sales
- Payroll services for Estonian and international employees
- E-invoicing setup and management
- UBO (Ultimate Beneficial Owner) declaration filing
- Coordination with Estonian tax authorities when needed
Estonian companies must file annual reports by June 30th following the financial year. We ensure your reports are prepared accurately and filed on time, keeping your company in good standing with the Commercial Register.
Best for: Digital businesses, SaaS companies, e-commerce sellers, and remote-first companies operating through Estonian entities.
UK Accounting Services
UK accounting follows well-established standards, but staying compliant requires understanding Companies House requirements, HMRC tax obligations, and proper financial statement preparation.
What makes UK accounting different: UK companies must file both annual accounts with Companies House (public record) and separate tax returns with HMRC.Â
Different deadlines, different formats, and penalties for late filing make professional accounting essential.
Our UK accounting services include:
- Monthly management accounts and bookkeeping
- Annual statutory accounts preparation for Companies House
- Corporation Tax returns for HMRC (CT600)
- VAT registration and MTD (Making Tax Digital) compliant returns
- Payroll services including PAYE, National Insurance, and RTI submissions
- CIS (Construction Industry Scheme) if applicable
- Confirmation Statement filing
- Corporate tax planning and R&D tax credit claims
UK Corporation Tax is currently 19-25% depending on profits. We help structure your finances to take advantage of available reliefs and allowances, from capital allowances to patent box regime for qualifying IP.
Companies House requires accounts within 9 months of year-end for private companies. HMRC requires Corporation Tax returns within 12 months. We manage both deadlines seamlessly.
Best for: Trading companies, consultancies, agencies, e-commerce businesses, and companies needing UK presence for EU market access.
Hong Kong Accounting Services
Hong Kong’s territorial tax system creates unique accounting opportunities, but only if your finances are structured correctly and properly documented. Substance requirements mean your accounting records must clearly demonstrate where income is sourced.
What makes Hong Kong accounting different: Only Hong Kong-sourced profits are taxable. Foreign-sourced income is typically tax-exempt. But proving income is offshore requires proper documentation—contracts, invoicing, operational evidence. Your accounting system must support these claims.
Our Hong Kong accounting services include:
- Monthly bookkeeping and financial statement preparation
- Profits Tax returns with offshore claims where applicable
- Audit coordination (required for most HK companies)
- Employer’s Return filing for payroll
- Business Registration Certificate renewal
- Annual Return filing with Companies Registry
- Transfer pricing documentation for related-party transactions
- Substance documentation to support offshore claims
Hong Kong Profits Tax is 8.25% on first HKD 2 million, then 16.5% on remaining profits—but only on Hong Kong-sourced income. Many e-commerce sellers, holding companies, and service providers structure operations for legitimate offshore treatment.
Audit is required for most companies unless they qualify for audit exemption (very small operations). We work with Hong Kong CPA firms to ensure your audit goes smoothly.
Best for: E-commerce sellers, cross-border traders, holding companies, IP licensing structures, and businesses serving international markets from Hong Kong.
Portugal Accounting Services
Portugal has become increasingly popular for entrepreneurs relocating to Europe, especially with NHR (Non-Habitual Resident) tax benefits. Portuguese accounting combines EU standards with local requirements.
What makes Portuguese accounting different: Portugal requires certified accountants (Contabilista Certificado) to handle business accounting. All accounting must be submitted electronically through the tax authority’s portal, and strict documentation requirements apply.
Our Portugal accounting services include:
- Monthly bookkeeping through certified Portuguese accountants
- IRS (personal income tax) coordination for business owners
- IRC (corporate income tax) preparation and filing
- IVA (VAT) registration and quarterly returns
- Social Security declarations for employees and owners
- Annual financial statements compliant with Portuguese accounting standards
- Optimization under the IFICI tax incentive regime (the successor to NHR) for qualifying individuals
- Municipal tax (IMI) support for property-holding companies
Portuguese companies benefit from EU tax directives and treaties. The corporate tax rate is 19% in 2026 (15% on the first €50,000 for qualifying small and medium-sized enterprises), with additional municipal surtaxes for larger companies.
Portugal’s growing tech scene and startup ecosystem make it attractive for digital businesses seeking an EU presence with favorable tax treatment.
Portugal’s growing tech scene and startup ecosystem make it attractive for digital businesses seeking EU presence with favorable personal tax treatment.
Best for: Entrepreneurs relocating to Portugal, tech startups, digital nomads establishing EU business, and companies targeting Portuguese-speaking markets.
UAE Accounting Services
UAE’s zero-tax environment (for qualifying businesses) is attracting entrepreneurs worldwide. However, recent introduction of corporate tax for non-free zone companies and strict economic substance requirements mean professional accounting is more important than ever.
What makes UAE accounting different: Free zone companies can maintain zero-tax status if they meet specific requirements. Mainland companies now face 9% corporate tax on profits above AED 375,000. Proper classification and documentation are crucial.
Our UAE accounting services include:
- Monthly bookkeeping for free zone and mainland companies
- Corporate Tax registration and return filing (where applicable)
- VAT registration and quarterly filing (5% standard rate)
- Economic Substance Regulations (ESR) reporting
- Audit services for companies exceeding thresholds
- Transfer pricing documentation
- Ultimate Beneficial Owner declarations
- Coordination with UAE accounting standards and regulations
UAE introduced corporate tax effective June 2023, but free zone companies can still achieve 0% tax if they meet qualifying conditions. This makes proper accounting structure essential from day one.
VAT registration is mandatory for businesses with turnover exceeding AED 375,000. Many international businesses voluntarily register to reclaim VAT on setup costs.
Best for: E-commerce businesses, trading companies, consultancies, holding structures, and businesses targeting Middle East and African markets.
Why Choose Helvetios
for International Accounting
Jurisdiction-Specific Expertise
Each jurisdiction gets specialized attention from accountants who understand that country's specific requirements, tax system, and compliance standards.
Proactive Compliance Management
We track all filing requirements, notify you in advance, and submit everything on time. No penalties, no stress, no surprises.
Tax Optimization Focus
Compliance is baseline—we go further. Every month, we look for opportunities to reduce your tax burden legally, from expense categorization to structural recommendations that save you money.
Multi-Jurisdiction Coordination
Running companies in multiple countries?
We coordinate accounting across jurisdictions, ensuring consistency, proper transfer pricing, and optimized group structure.
Fixed Monthly Pricing
No surprise bills or hourly charges. You know exactly what accounting costs each month, making budgeting simple and predictable.
Technology-Enabled
We use modern cloud accounting software (Xero, QuickBooks, local platforms as appropriate) so you always have real-time access to your financial data, wherever you are.
Our Streamlined Accounting Process
1. Initial Accounting Consultation
2. Information Gathering & Document Review
3. Tailored Accounting Solution Proposal
4. Full Implementation of Accounting Processes
5. Ongoing Advisory & Financial Oversight
6. Strategic Recommendations & Future Planning
Get a free consultation to discuss your specific accounting needs and discover how we can help you achieve compliance and efficiency worldwide.
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We provide comprehensive accounting services for businesses of all sizes and industries, from startups to established enterprises, across various international jurisdictions.
Yes, our expertise includes bookkeeping for companies registered in both non-offshore (onshore) and offshore jurisdictions, ensuring compliance with relevant local and international standards.
Our team possesses in-depth knowledge of tax regulations across multiple jurisdictions. We continuously monitor changing legislation and ensure your filings are done correctly and on time, helping your business avoid penalties and optimize its tax position.
Absolutely. We offer full-service, turnkey accounting solutions, handling everything from day-to-day bookkeeping and payroll to financial reporting, audit support, and coordination with auditors, allowing you to focus on your core business.
We prepare and submit financial statements for international companies in accordance with applicable standards relevant to your chosen jurisdiction, ensuring accuracy and regulatory adherence.
We begin with a detailed initial consultation to understand your business model, financial setup, and specific accounting needs. Based on this, we develop a customized accounting plan tailored to your company's size, jurisdiction, and industry.
We provide continuous advisory and financial oversight, monitoring your financials and offering real-time insights. As your business grows, we also offer proactive strategic recommendations for tax optimization and financial planning.