One of the provisions is the reduction of the US Social Security Benefit if receiving foreign social security payments or private pension payments. Generally speaking, the US benefit is reduced by $50 for every $100 of the foreign pension.
FATCA and Foreign Pensions Under FATCA filing requirements, all US citizens are required to report certain foreign assets to the IRS if they exceed certain thresholds. To do this, you would complete and file Form 8938.
You may have to file multiple forms to report the details of your foreign pension, such as: Form 3520: Required if you have any transactions with a foreign trust. Form 3520-A: Required to be filed by the company that manages your foreign pension. Form 8621: Required if PFIC rules apply.
Report on line 11500 of your return, in Canadian dollars, the total amount of your foreign pension income received in the tax year. Attach a note to your paper return identifying the type of pension you received and the country it came from. You may be able to claim up to $2,000 on line 31400.
Does the GPO Apply to Foreign Pensions? A foreign pension will not trigger the application of the GPO. What it does trigger, however, is another Social Security rule that can impact how much you receive in benefits: the Windfall Elimination Provision (WEP).
ERISA also does not cover plans maintained outside the United States primarily for the benefit of nonresident aliens or unfunded excess benefit plans.
UN monthly pensions received by all U.S. citizens or resident aliens are always taxable wherever the UN retiree is living, in the U.S. or elsewhere. Such UN pensions are also taxable for non-resident aliens who qualify as resident aliens, for tax purposes, under the Substantial Presence test (see paragraph 4-7).
A claim for a comparable foreign pension with an 'agreement country' can be lodged with and processed by Centrelink. For any other country, a claim for a comparable foreign pension must be lodged directly with the country involved.