Income Tax and Wealth Tax Returns for complex cases, expatriates, and high-net-worth individuals
If your tax situation doesn’t fit the standard model, you need an advisor who truly understands your reality.
Experts in Complex Taxation, National and International
At Adlanter, we help residents in Spain, global professionals, executives, investors, high-net-worth individuals, and taxpayers with unique structures to file their Income Tax and Wealth Tax returns in a secure, precise, and optimized way when their situation goes beyond standard cases.
Unlike advisory firms that focus only on expatriates or specific forms such as 210 and 720, Adlanter works with all types of complex situations, from strictly domestic cases to those involving multiple jurisdictions.
Complex Income Tax Returns for Residents in Spain (Domestic)
- Multiple properties or rental income with different situations
- Economic activities and multiple professional engagements
- High-net-worth individuals with advanced structures
- Returns with complex capital gains and losses
- Financial investments (shares, funds, ETFs, plans, unit-linked products…)
- Variable compensation, bonuses, or special remuneration systems
- Irregular income, severance payments, and high-impact one-off transactions
Income Tax with International Elements
- Individuals under the Beckham Law
- Digital nomads and multi-location income
- Professionals on assignment or with international mobility
- Properties in other countries
- Dual tax residency or change of residence
- International investments and global portfolios
- Informative forms (720, assets abroad)
Advanced Cases
- Stock options, RSUs, equity plans, phantom shares
- Crypto assets: trading, staking, DeFi, farming, capital gains, and wallet transfers
- Partners, directors, or entrepreneurs with hybrid structures
If Your Tax Return Includes Any of These Scenarios, You’re in the Right Place.
What We Do for You
Advanced Tax Analysis
We identify risks, optimize opportunities, and apply the necessary national and international regulations for your case.
Comprehensive Preparation of Income and/or Wealth Tax Returns
We manage the entire process: documentation, calculations, review, optimization, and filing.
Global Wealth Tax Optimization
Tax planning for complex estates, diverse assets, and investment structures.
Advisory on Special Cases and Combined Taxation
Double taxation, international mobility, income from multiple countries, or hybrid structures.
Comprehensive Management of Advanced Crypto Assets
We report DeFi, staking, farming, and capital gains on international exchanges and wallets.
Specialists in Your Profile
- If your case is domestic and complex: Management of investments, properties, wealth, professional activity, and irregular income.
- If you fall under the Beckham Law: We check requirements, optimize its application, and prevent errors that could invalidate it.
- If you are a digital nomad: We manage tax residency, multi-location income, and double taxation treaties.
- If you manage a large estate: Optimized structures, global wealth taxation, and advanced planning.
- If you are an executive or highly skilled professional: Stock options, RSUs, equity, bonuses, relocations, and combined taxation.
Why Trust Adlanter
- Over 35 years of experience in complex national and international taxation
- Multidisciplinary approach: taxation + wealth + investment + mobility
- Clear and educational methodology: we explain what you need without jargon
- Personalized preparation, not automated
- Specialists in cases combining multiple fiscal elements simultaneously
- Ongoing support for notifications and official requests
Your Tax Situation May Be Complex, but Your Experience with Adlanter Won’t Be.
How We Work
- Initial meeting (online or in-person)
- Personalized checklist based on your tax profile
- In-depth analysis and planning
- Preparation and filing of Income and/or Wealth Tax returns
- Final report with personalized recommendations
- Ongoing support with the Tax Authorities
Request Your Initial Assessment for Your Complex Income or Wealth Tax Case
Frequently Asked Questions
What happens if I have income from multiple countries?
We analyze double taxation treaties to prevent paying twice. Advisory firms specialized in expatriates often focus heavily on this, but at Adlanter, we combine it with global wealth planning.
Can I apply the Beckham Law?
It depends on your contract, previous residence, and type of activity. We conduct a complete analysis.
How are my investments or properties outside Spain taxed?
We evaluate each country, applicable treaties, and obligations such as Form 720 if required (common in advisory services for foreign residents).
How do I declare complex financial investments?
We handle capital gains, integrations, deductible losses, and tax brackets.
Do I need to declare my cryptocurrencies?
Yes. We manage capital gains, wallet transfers, DeFi operations, and more.
What if I have already filed my tax return incorrectly?
We can amend, optimize, or defend it before the Tax Authorities.