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: To claim a refund, you must generally file within three years from the date you filed the original return or two years from the date you paid the tax, whichever is later.

: Use Form 1040-X to correct errors such as filing status, number of dependents, or total income, and to claim missed credits or deductions. (308 KB)

Due to the specific mention of "308 KB," your query may also refer to one of several federal PDF documents of that exact size: Topic no. 308, Amended returns | Internal Revenue Service : To claim a refund, you must generally

IRS covers the guidelines for filing amended tax returns using Form 1040-X . While "308 KB" often appears as the file size for specific PDF versions of this topic or related federal guides, the primary informational content for "Topic 308" refers to correcting previously filed federal income tax returns. Core Guidelines for Amended Returns 308, Amended returns | Internal Revenue Service IRS

: Changes to your federal return may affect your state tax liability. You should contact your state tax agency to determine if a state amendment is necessary. Related Documents with 308 KB File Sizes