@4SV , Namaste ji
1.you did not say as to when your father arrived in the USA ( we are talking about 2023 tax year I hope ). The reason for need of the entry date is because the residency start date for the tax year is determined by this.
2. If the residency is not for the full calendar year, then one cannot use the standard deduction and thus may impact the taxable income. So please provide this date as also whether he was present ( the number of days ) in the USA ( for any reason ) during 2021, 2022 and 2023. What visa if he was present prior to the immigrant visa issuance/ activation/ admission.
3. As a Green Card holder ( US person ) one is taxed by the USA on his/her world income ( i.e. income from any and all sources and countries ). So recognition of pension from another country is mandatory.
4. If the income ( sourced in another country ) is taxed by another tax jurisdiction, AND US has tax treaty with that country, then the double taxation bite may be ameliorated/ reduced by using foreign tax credit / deduction. The extent of this relief ( for tax credit or deduction ) for the current tax year is limited to some extent. Note that this reduction of tax burden is generally applicable ONLY to federal taxes and states mostly do not recognize the tax treaties.
5. Proof of foreign earnings and taxes paid thereon is generally not asked for except in case of audits. ( so it ia good idea to keep these documents for at least three years and perhaps for as much as six years ).
6. Note also that if the foreign income is passing through a foreign bank account that the taxpayer either owns and / or has signature authority over , both FBAR and FATCA regulations come into effect.
Is there more I can do for you ? In further discussion on this topic/ thread it will be necessary for you to answer my questions above.
Namaste ji
pk
