How to File a DBA in Wisconsin: Search, Fees, and Renewal

To file a DBA in Wisconsin, register your trade name with the Department of Financial Institutions (DFI) for a $15 fee, either online through the Trademark filing portal or by mailing paper form DFI/TRD101. The registration lasts 10 years, ties the business name to its owner in the public record, and applies whether you are a sole proprietor branding your own work or an existing LLC or corporation launching a product line under a different name.¹

One thing to know upfront: Wisconsin handles DBAs through its trademark system, not through the business entity forms most people expect to use. That’s why the form is titled “Registration of Tradename/Trademark” and lives on the DFI’s Trademark pages rather than with LLC and corporation filings.

Search the Name Before You File

Wisconsin law will reject a proposed trade name that is identical to, or so similar to, an existing registered mark that it could deceive the public.¹ Check availability before you pay the fee.

There are two searches worth running, and they cover different databases:

The DFI’s Trademark Search Portal shows existing registered trade names and trademarks. You create a free account to use it, and running both “contains” and “starts with” queries catches near-matches, not just exact ones.²
The DFI’s Name Availability Search covers corporate entity names (LLCs, corporations) separately.³

The general Corporate Records Search does not include trade names or trademarks.⁴ If you only search there, you’ll miss every existing DBA on file. Use the Trademark Search Portal for trade name conflicts specifically.

How to File the Registration

You have three ways to submit:

Online through the DFI’s Trademark File Online portal, paying by ACH or credit card.⁵
By mail, using form DFI/TRD101 with a check or money order.
In person at the DFI office in Madison.

Mailed filings go to:

Wisconsin Department of Financial Institutions
Division of Corporate and Consumer Services
PO Box 93348
Milwaukee, WI 53293-0348⁶

However you file, you’ll provide the same information: your full legal name and business address, the trade name exactly as you’ll use it, a specific description of the goods or services covered, the date you first used the name (in Wisconsin or elsewhere), and your business structure (individual, partnership, corporation, or other).

The filing includes a sworn statement that you have the right to use the name and that no one else holds the right to it “either in the identical form or in any such near resemblance thereto as may be calculated to deceive.”¹ That declaration is not a formality. Filing knowing someone else already uses the name exposes you to penalties for fraudulent filing.

Registering a logo or design mark rather than a plain word name adds one step: describe the image in detail, as if the reviewer can’t see it, and upload the image file in the designated area of the online portal.⁵

Fees and Processing Time

Each trade name registration costs $15, and each name is a separate filing.⁵ Two names for two product lines means two filings and $30 total.

If you need faster turnaround, expedited processing is available for an additional $25.⁷ Standard processing typically runs about five to seven business days. Once the DFI approves the registration, you receive a trade name certificate, and the record is posted to the public database.

Optional County Recording

Wisconsin also allows trade name documents to be recorded with the county register of deeds under Wis. Stat. § 132.04. This is optional and separate from the state filing. Some owners record at both levels so anyone searching county records can identify who operates under the name. County fees vary and are on top of the $15 state fee.

What the Registration Does Not Do

A DBA does not create a new legal entity, and it does not provide any liability protection. If you are a sole proprietor, you remain personally liable for the business’s debts and obligations after filing exactly as you were before.

It also does not give you nationwide brand rights. A Wisconsin trade name registration only records your use of the name at the state level. Enforceable protection across the country requires a separate federal trademark through the U.S. Patent and Trademark Office.⁸ The two serve different purposes; one does not substitute for the other.

Finally, filing a DBA does not require a new Employer Identification Number. The IRS issues a new EIN when your entity structure changes (for example, when you incorporate or form an LLC), not when you begin operating under a different name.⁹ You’ll report business income on the same tax return and schedules you used before.

After You File: Banking, Amendments, and Renewal

Most banks require a copy of your trade name certificate before opening an account under the DBA name, so bring your DFI confirmation along with your EIN letter or Social Security number and a government-issued ID. Getting registered before you approach the bank saves a second trip.

If your address, contact information, or the description of goods and services changes later, file an amendment through the same online trademark system. You must be an authorized signer on the registration to submit changes.⁵

The registration is good for 10 years from the filing date.¹ To keep it, you must renew within the six months before it expires. The renewal fee is the same $15 as the original, filed through the same Trademark portal.¹⁰ Miss the window and the registration expires automatically. The statute provides no grace period, so a lapsed registration means starting over with a fresh filing, and the name may no longer be available. A calendar reminder set well before the six-month window opens is the simplest safeguard.

Penalties and Infringement Remedies

Anyone who knowingly and willfully violates the registration requirements under § 132.01 faces up to six months in jail, a fine of up to $10,000, or both. A fraudulent filing carries those same criminal penalties plus civil liability for damages the fraud causes.¹

If someone else uses your registered name or a confusingly similar one, Wisconsin law lets you seek an injunction and, when appropriate, an order to destroy counterfeit marks. A court may award your actual damages or up to three times the infringer’s profits. Treble damages become mandatory rather than discretionary when the infringer acted willfully, and the court can also award investigation costs and attorney fees.¹¹

1
Wisconsin State Legislature. Wisconsin Statutes 132.01 – Marks
2
State of Wisconsin Department of Financial Institutions. DFI Trademark Search
3
Department of Financial Institutions. WI Corporate Records Search – Name Availability Search
4
Department of Financial Institutions. WI Corporate Records Search
5
State of Wisconsin Department of Financial Institutions. DFI Trademark File Online
6
Department of Financial Institutions. DFI Corporation Fees
7
Wisconsin State Legislature. Wisconsin Administrative Code DFI-CCS 10 – Fees
8
United States Patent and Trademark Office. How Trademarks and Trade Names Differ
9
Internal Revenue Service. When to Get a New EIN
10
State of Wisconsin Department of Financial Institutions. DFI Trademark Fees
11
Wisconsin State Legislature. Wisconsin Statutes 132.033 – Suit to Enjoin Use of Mark