Joint and several liability between spouses in tax law "So examine him who is eternally bound..."
"I'm living in separation and my ex-partner refuses to carry outstanding tax bills from our marriage. "Can the IRS require me to carry those bills on my own?" These and similar questions are common in tax consulting. The answer is "It depends." This article answers the relevant questions and analyses the differences in cantonal and municipal taxes.
Taxation of compensation payments from share certificates
This paper focuses on the income tax treatment of income from investments in classical index and basket certificates from equities. The focus is on the view of the investor resident in Switzerland who holds the products as part of her private assets.
Taxation of spouses in international relations
An "international" spouse relationship from a tax law perspective exists if only one spouse is subject to unlimited tax liability in Switzerland, while the other spouse has no or only limited tax liability in Switzerland. It must also be a legally and factually unseparated marriage. The taxation of such "international" spousal relationships is opposed by the addition of factors as prescribed by law. However, according to the established case law of the Federal Supreme Court, the latter - unlike in intercantonal relations - cannot create any tax liability in Switzerland.
The unsuccessful move from Binningen to Wollerau - The location of the parking spaces for a Maserati and a Ferrari must be taken into account when determining tax residence
In its ruling of 19 September 2019 (2C_170/2019), the Federal Supreme Court had to judge an unsuccessful move from Binningen to Wollerau. It confirmed the ruling of 14 November 2018 of the Basel-Landschaft Cantonal Court (810 18 59).
FDF adjusts tax rates and deductions to inflation
The Federal Department of Finance (FDF) adjusts the rates and deductions for direct federal tax annually to offset the effects of cold progression. The latest changes concern the 2026 tax year.
FTA publishes new refund and default interest rates for federal taxes from 2026
On September 11, 2025, the Federal Tax Administration (FTA) published the new refund and default interest rates for federal taxes from 2026.
Federal Council and Parliament recommend reform of residential property taxation for approval
The Federal Council and Parliament recommend that the creation of a constitutional basis for cantonal property taxes on second homes be adopted on September 28, 2025. The bill is the prerequisite for a comprehensive reform of residential property taxation in Switzerland, which also aims to abolish the imputed rental value.
Federal Council adopts dispatch approving the list of 74 partner states for the automatic exchange of information on crypto assets
On June 6, 2025, the Federal Council adopted the dispatch approving the introduction of the international automatic exchange of information (AEOI) on crypto assets with the relevant partner states. Entry into force is planned for 2026 with the first exchange of data in 2027.
Clarification of Notice-024-DVS-2025-d of 22.04.2025 - Income and withholding tax: Determination of the maximum permissible conversion discount
On May 19, 2025, the FTA specified the future practice in Communication 024-DVS-2025 regarding the determination of the maximum permissible conversion discount.
Mutual agreement between Switzerland and Liechtenstein - Dormant estates
On May 19, 2025, the SIF announced that the competent authorities of Switzerland and Liechtenstein had concluded a mutual agreement pursuant to Art. 25 para. 3 DTA CH-FL to avoid double taxation of income and assets belonging to dormant estates under Liechtenstein law.
Taxation of board of directors and foundation board fees
Case studies and detailed solutions from Laetitia Fracheboud and Olivier Margraf. This workshop was part of the ISIS seminar "Pensions and Insurance" on September 22 and 23, 2025.
Capital withdrawals from pension plans (incl. partial withdrawals)
Case studies and detailed solutions from Stefan Oesterhelt and Sirgit Meier. The workshop was part of the ISIS seminar "Pensions and Insurance" on September 22 + 23, 2025.
Tax law challenges for partnerships (2025)
Workshop by Susanne Schreiber and Toni Hess on the occasion of the ISIS) seminar on June 02 + 03, 2025 with the title "Tax law challenges of partnerships"
ISIS) seminar folder "The world of work on the move: tax and social security challenges (2025)"
All documents from the ISIS) seminar "The world of work on the move: tax and social security challenges" held on May 22, 2025 under the direction of Petra Caminada in one PDF document. Case studies, detailed solution notes and slides: Here you will find all documents from the individual workshops according to the following content description.
