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| Form 1120-X Amended U.S. Corporation Income Tax Return |
| Form 926 Return by a U.S. Transferor of Property to a Foreign Corporation |
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| Form 1040-X Amended U.S. Individual Income Tax Return |
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| 1040-X Instructions |
| Form 1120 U.S. Corporation Income Tax Return |
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| 1120 Instructions for Form 1120 |
| Form 1120-F U.S. Income Tax Return of a Foreign Corporation |
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| 1120-F Instructions |
| Form 1120-S U.S. Income Tax Return for an S Corporation |
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| 1120-S Instructions |
| Form 5472 Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business |
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