How Do I Find My Idaho State Tax ID Number? Idaho Tax and EIN Information

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  • Obtain an EIN for free by calling (800) 829-4933 or visiting the IRS website. An Employer Identification Number (EIN) identifies your business to government agencies.

  • Home-based businesses in Idaho need to register their name and entity type with the Secretary of State.

  • Businesses with employees need a state tax ID for each state in which they hire employees. Applying for an EIN for your Idaho LLC is free.

Finding and Using Tax Identification Numbers

How do I find my Idaho EIN number? You can find your EIN on your confirmation letter from the IRS, old tax returns, old business loan applications, your business credit report, or payroll paperwork. You can also call the IRS to find your Federal Tax ID number.

What is the IRS Tax Identification Number? A Taxpayer Identification Number (TIN) is an identification number used by the Internal Revenue Service (IRS) in the administration of tax laws. TINs are issued either by the Social Security Administration (SSA) or by the IRS.

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