About
G-Tax Consulting, based in Itzehoe near Hamburg, Germany, specializes in the taxation of cryptocurrencies and digital assets for private investors and companies. The firm handles everything from Bitcoin and Ethereum to DeFi, staking, lending, and NFTs — classifying transactions correctly under German tax law, preparing data from common tracking tools, and filing the tax return. Alongside crypto, G-Tax Consulting advises on international tax law, real estate, and startups. The firm works fully digitally and in German, English, Russian, and Italian.
Experience and qualifications
G-Tax Consulting is led by Giulia Uggias-Sproß, a German State-Certified Tax Advisor (Steuerberaterin) with a Master of Arts in Taxation. She is licensed and authorised to prepare and file tax returns with the German tax authorities, is a member of the Steuerberaterkammer [Schleswig-Holstein], and is listed in the official German register of tax advisers (berufs-org.de). She began her career in 2014 and has practiced in Berlin, Itzehoe and Munich, advising private individuals and small to medium-sized businesses on domestic and cross-border matters, and is bound by the professional and ethical standards of the German tax advisory profession.
Client focus
G-Tax Consulting serves individual crypto investors as well as founders, GmbH owners, and small to medium-sized businesses. Clients are often expats, international investors, and internationally mobile private individuals who need German tax expertise across borders. Based in Germany, G-Tax Consulting advises clients throughout the country and internationally, in German, English, Russian, and Italian.
Service offerings
G-Tax Consulting can assist with:
Cryptocurrency tax reporting (Bitcoin, Ethereum, and other assets)
DeFi
Staking and lending
NFTs
Data preparation from crypto tracking tools
Tax classification of private vs. commercial crypto activity
Voluntary disclosures (Selbstanzeige) for crypto
International tax law: double taxation, foreign income, exit taxation
Real estate taxation
Tax advice for startups, founders and GmbH owners
