Minnesota Tax ID Number: Who Needs One, How to Register, and Penalties

A Minnesota Tax ID number is a seven-digit identifier the Minnesota Department of Revenue assigns to businesses so they can report and pay state taxes such as sales tax, employee withholding, and corporate income tax.1Minnesota Department of Revenue. Minnesota Tax ID Requirements You need one if your business has a taxable activity in Minnesota. You get one, at no cost, by registering through the Department of Revenue’s online Business Tax Registration portal, and the number is issued immediately.2Minnesota Department of Revenue. Registering Your Business

What the Number Is, and What It Isn’t

Minnesota does not hand out separate permit numbers for sales tax, withholding, or corporate tax. Your one seven-digit Tax ID covers all of them. When you register, you tell the state which taxes apply to your business, and it opens those specific accounts under that single number.3Minnesota Department of Employment and Economic Development. Tax ID Numbers

Three things this number is not. It is not your federal Employer Identification Number; the EIN is issued by the IRS for federal obligations, and you’ll usually need one before you can apply for the state Tax ID. It is not your Secretary of State business registration; that’s a separate filing and does not create a Tax ID.4Minnesota Secretary of State. How to Start a Business in Minnesota And individual taxpayers don’t need one at all. If you’re filing a personal Minnesota income tax return, you file under your Social Security number or ITIN.1Minnesota Department of Revenue. Minnesota Tax ID Requirements

Who Needs a Minnesota Tax ID

The common triggers are straightforward. You need to register if any of the following apply:

  • You make retail sales of taxable goods or services in Minnesota and have to collect sales tax.5Justia. Minnesota Statutes Chapter 297A – General Sales and Use Taxes
  • You pay wages to employees performing services in Minnesota and must withhold state income tax from their pay.6Minnesota Department of Revenue. Withholding Tax
  • Your business is a corporation, partnership, or S corporation subject to Minnesota income or franchise tax.7Minnesota Office of the Revisor of Statutes. Minnesota Code 290.01 – Definitions
  • You owe Minnesota use tax on taxable items bought from out-of-state sellers who didn’t charge it.

Nonprofits are a partial case. A nonprofit seeking federal 501(c)(3) status or a Minnesota sales tax exemption does not need a Tax ID for those purposes.1Minnesota Department of Revenue. Minnesota Tax ID Requirements But a nonprofit that hires employees or makes taxable sales still needs one for those activities.

Out-of-State and Online Sellers

Physical presence in Minnesota is not required. An out-of-state seller must register once it crosses either of two thresholds in any 12-month period: more than $100,000 in retail sales shipped to Minnesota, or 200 or more separate retail transactions shipped to Minnesota.8Minnesota Department of Revenue. Sales Tax for Remote Sellers

If you sell only through a marketplace like Amazon or Etsy, the marketplace generally collects and remits Minnesota sales tax for you, so you may not need your own Tax ID on account of those sales. The exception is where the seller gives the marketplace a copy of its own Minnesota sales tax registration and the two agree the seller will handle collection.9Minnesota Department of Revenue. Sales Tax for Marketplace Providers If you also sell through your own website or a platform that doesn’t collect for you, the thresholds above apply to those sales.

How to Register

Registration is free. The Department of Revenue’s online Business Tax Registration portal is the fastest route: you complete the application, receive your seven-digit number immediately, and the system automatically creates the e-Services account you’ll use to file returns and manage the account going forward.10Minnesota Department of Revenue. e-Services Information You can also register by phone at 651-282-5225 or 1-800-657-3605 toll-free.2Minnesota Department of Revenue. Registering Your Business

Before you start, have these on hand:

  • Your federal EIN documentation from the IRS, if you have one.
  • Your business’s legal name, physical address, structure (sole proprietorship, LLC, corporation, and so on), and start date in Minnesota.
  • The Social Security number, phone number, and email of the owner or responsible party.
  • A list of the tax types you’ll be reporting, since you’ll select them during registration.

Once issued, the Tax ID appears on your Minnesota sales tax returns, withholding filings, and entity-level income tax returns. Some state business licenses and permits also ask for it on their applications.11Minnesota Department of Employment and Economic Development. Business Licenses and Permits

Changing or Closing the Account

Routine updates, such as a new address, a new officer, or a different NAICS code, are handled inside e-Services under the existing Tax ID. But some changes require a new number. You’ll typically need to apply again if your business changes its legal structure (for example, converting a sole proprietorship to an LLC), if the IRS requires a new EIN, or if the underlying legal entity changes through a shift in ownership.1Minnesota Department of Revenue. Minnesota Tax ID Requirements

When the business closes for good, close the Tax ID too. File any outstanding returns and pay the balances first. An e-Services Master user can close the business through the portal by going to the Taxpayer Information tab and following the Close Business steps.12Minnesota Department of Revenue. Closing an Account or Business You can also close it by emailing business.registration@state.mn.us or calling the numbers above. If your business shut down more than a year ago and you never canceled the Tax ID, contact the department to resolve it, because an open account can generate return-filing expectations you’re no longer meeting.

What Happens If You Skip Registration

Operating without a Tax ID when you need one means you aren’t filing or paying the taxes tied to it, and Minnesota’s penalties stack.

For sales tax and withholding tax, the late-payment penalty starts at 5% of the unpaid tax within the first 30 days late, with another 5% added for each additional 30-day period (or fraction of one), up to a 15% cap. Corporate franchise tax, partnership tax, and similar entity-level taxes carry a flat 6% late-payment penalty. A separate 5% penalty applies for failing to file a return on time, and a 10% add-on applies where an assessment results from negligence or intentional disregard of the rules.13Minnesota Office of the Revisor of Statutes. Minnesota Statutes Section 289A.60 – Civil Penalties

Interest runs on top of the penalties. The Minnesota interest rate on unpaid taxes for 2026 is 7%.14Minnesota Department of Revenue. Calculating Penalty and Interest A few months of ignored registration can leave a business owing well more than the original tax.