Tax Advisory Services
Our U.S. tax advisory services are designed to provide strategic guidance for individuals, businesses, trusts, and cross-border structures. We help clients plan with foresight while ensuring full compliance with U.S. tax law.
Our advisory services include:
-
Tax structuring for international investments
-
Pre-immigration and expatriation planning
-
Trust and estate tax optimization
-
Entity selection and restructuring
-
Cross-border income and withholding planning
-
Transaction support and due diligence
We deliver more than technical advice—we offer practical insight and forward-looking strategies that support informed decision-making, minimize tax exposure, and help clients manage complexity with confidence.

Tax Advisory Services
Our U.S. tax advisory services are designed to provide strategic guidance for individuals, businesses, trusts, and cross-border structures. We help clients plan with foresight while ensuring full compliance with U.S. tax law.
Our advisory services include:
-
Tax structuring for international investments
-
Pre-immigration and expatriation planning
-
Trust and estate tax optimization
-
Entity selection and restructuring
-
Cross-border income and withholding planning
-
Transaction support and due diligence
We deliver more than technical advice—we offer practical insight and forward-looking strategies that support informed decision-making, minimize tax exposure, and help clients manage complexity with confidence.

Tax Compliance Services
At our firm, we help individuals, businesses, and trusts stay on top of their tax obligations. We keep it simple, clear, and personal — because that's how we like to be treated too.
For Individuals
-
We prepare and file your federal, state, and local tax returns.
-
We help you plan ahead to avoid surprises at tax time and handle any foreign accounts or special reporting needs you may have.
For Trusts and Estates
-
We help trust companies meet U.S. foreign trust reporting obligations by preparing DNI calculations, Forms 3520, 3520-A, 5471, and related filings, ensuring full compliance with IRS requirements.
-
We help with estate and gift tax filings.
For Businesses
-
We prepare and file tax returns for corporations, partnerships, LLCs, and S Corps.
-
We manage flow-through tax filings and help partners and shareholders understand their K-1s.

CONTACT
Direct +41449190782
ADDRESS
Gössikon 23
CH-8126 Zumikon
SOCIAL
CONTACT
Office Address
Fideli GmbH
Haus der Immobilien
Zollikerstrasse 65
8702 Zollikon
Registered Address
Gössikon 23
SOCIAL
CONTACT
Office Address
Fideli GmbH
Haus der Immobilien
Zollikerstrasse 65
8702 Zollikon
Registered Address
Gössikon 23
CH-8126 Zumikon
SOCIAL
CONTACT
Office Address
Fideli GmbH
Haus der Immobilien
Zollikerstrasse 65
8702 Zollikon
Registered Address
Gössikon 23
CH-8126 Zumikon
SOCIAL