File Idaho Form 39R
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Form-39R is a supplemental form to Idaho's Form-40. This means it is not a mandatory form to file, and if filed should be attached to a filled out Form-40. Form-39R allows Idaho residents to declare income that was earned as compensation for a job they worked outside of the state of Idaho. Idaho does not tax income that was earned outside of it. Thus by filing this form Idaho residents who worked outside the state of Idaho will avoid dual taxation, getting taxed twice first by Idaho (their state of residency) and second by the state they earned the income in, on their income.