Estate tax relief and planning under the U.S.-Canada Income Tax Treaty.

• Author: Mathisen, Kristi M.

Normally, income tax treaties are not part of an estate planner's toolkit. The U.S.-Canada Income Tax Treaty of 1980, as amended in 1995 (Treaty), is an important exception (see Protocol Amending the Convention Between the United States of America and Canada With Respect to Taxes on Income and on Capital Signed at Washington on September 26, 1980, as amended by the Protocols Signed on June 14, 1983, March 28, 1984, and March 17, 1995). It is the first tax treaty to address estate tax inequities that arise between the U.S. and a country without estate or inheritance taxes.

Treaty provisions apply to the estates of citizens and residents of the U.S. or Canada, as follows:

* U.S. citizens who reside in Canada, regardless of where their assets are located.

* U.S. citizens who do not reside in Canada, but have assets there.

* U.S. residents with Canadian assets.

* Canadian residents with U.S. assets.

Background

The U.S. imposes an estate tax on the value of assets transferred at death. Canada imposes an income tax on 50% of the unrealized gains on capital property deemed sold at death.

To further complicate matters, the Federal estate tax applies to both U.S. citizens and residents, while Canada's income tax is based only on residence. A U.S. citizen decedent who was a resident of Canada at death is subject to tax in both countries on all assets. In addition, each country taxes nonresidents on transfers of certain assets considered located within that country (e.g., real estate). This means that a Canadian resident is subject to both Canadian income tax and U.S. estate tax on the at-death transfer of appreciated real estate located in the U.S.

Because estate and income taxes are different, neither country's tax code allows a credit for the taxes imposed at death by the other country. As is discussed below, the Treaty mitigates the resulting inequities with provisions that address the following:

1. Double taxation.

2. Spousal bequests.

3. Unified credit for nonresidents.

4. Small estates.

5. Charitable donations.

The Treaty does not provide gift tax relief.

Double Taxation

To address the double-tax burden, the Treaty provides a foreign tax credit for the Canadian income tax on some or all of the U.S. estate tax paid on U.S.-situs assets (i.e., assets that would have been subject to U.S. income tax); see Treaty Article XXIX B.6. For U.S. estate tax purposes, it also provides a foreign death tax credit for the Canadian income tax assessed on the...