Form A-001 at a glance
What it is: A-001 Registration Verification is a form of the Wisconsin Department of Revenue.
Who signs: Enter Completed by (type or print), Title, Signature and Date.
If you do not verify that your business and its affiliates are registered for Wisconsin sales or use tax or that all sales are exempt, Wisconsin state agencies and authorities may not purchase products or services from the business or affiliates.
A filled-in Form A-001 example: a business that started selling to Wisconsin in 2019

How to fill out Form A-001, box by box
A. Identification
Corporation, Partnership and Limited Liability Company

For a Corporation, enter the State of incorporation and the Date of incorporation (mm dd yyyy).
For a QSub, enter the Legal name of owner and the Owner SSN or, if owner is a business, enter FEIN.
For a Partnership, mark General, Limited (LP) or Limited Liability Partnership (LLP), and enter the Date registered (mm dd yyyy) and the State of registration.
For a Limited Liability Company (LLC), mark the LLC classification for federal income tax. For a Disregarded entity (LLC activity reported on owner's income tax return), enter the Legal name of owner and the Owner SSN or, if owner is a business, enter FEIN.
For Other (e.g., Governmental unit, nonprofit organization), mark Other.
If your income year does not end on December 31st, enter the date your fiscal year ends (mm - dd).
B. Current Wisconsin Registration Status

Under B. Current Wisconsin Registration Status (check appropriate box), if you are currently registered to collect and remit Wisconsin sales and use tax, enter the Wisconsin sales and use tax account number.
If you are registering to collect and remit Wisconsin sales and use tax, register online at tap.revenue.wi.gov/btr and enter your Business Tax Registration confirmation number.
If all sales of products and services in Wisconsin are exempt, complete and attach Affidavit of Exempt Sales (Form A-006).
If you are not eligible to submit an Affidavit of Exempt Sales and decline to register to collect and remit Wisconsin sales and use tax, Wisconsin state agencies and authorities may not purchase products or services from your company.
C. Wisconsin Business Activity

In C. Wisconsin Business Activity, describe all products sold, rented or leased to Wisconsin customers.
Describe all services sold or provided to Wisconsin customers.
Mark Yes or No: do you sell products or services in Wisconsin to customers that are not governmental units?
Mark Yes or No: do salespersons or representatives visit Wisconsin for any business purpose? If yes, explain.
Mark Yes or No: do you license software or intangible assets, such as trademarks, customer lists, etc., in Wisconsin?
Mark Yes or No: do you provide services outside Wisconsin for which the benefits are received in Wisconsin?
Enter the year you started selling products/services to Wisconsin customers.
Why are all sales exempt?

Mark Yes or No: are all of your sales in Wisconsin exempt from sales and use tax?
Under Why are all sales exempt? (check all that apply), mark Sales to governmental units, Sales for resale, Sales are not taxable, Exemption certificates provided by customers or nontaxable services, or Other (describe).
If your situation is different
You have affiliates selling products or services in Wisconsin
Under Affiliate Information, mark Yes or No: do you have affiliates selling products or services in Wisconsin? If Yes, complete and attach Affiliate Registration Verification (Form A-002). The * after affiliates: "Affiliate" means a person or business that controls, is controlled by, or is under common control with another person or business. "Control" means to own, directly or indirectly, more than 10% of the interest in, or voting securities of, a business.
Sources
[1] Form A-001, Registration Verification, Wisconsin Department of Revenue (the Official source link on this page).


