File Idaho Form 51
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Idaho Form 51 2018
Idaho Estimated Payment of Individual Income Tax
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Idaho taxpayers, who did not file their Idaho tax returns by April 15th, will be granted an automatic extension of six months without a written request. In order to qualify for this automatic extension, taxpayers will have to file their Idaho income tax returns by October 15th.
Each taxpayer will need to keep in mind that an extension of time to file a tax return does not grant an extension of time to pay taxes.
Please keep in mind that Idaho Form 51 must only be used when a taxpayer is making a payment.