Wisconsin Business Registration Cost — 2026

Find out exactly what it costs to register and maintain a business including state filing fees and annual requirements.

Quick Wisconsin Tax Estimate

Based on Wisconsin's tax rates for 2026. Enter your details for a personalized calculation.

State Tax on $80K Profit
$1,726.8
SE Tax
$11,303.64
Effective Rate
22.3%
Marginal Rate
12%
Full Wisconsin Tax Calculator →

Wisconsin Tax Information

State Income TaxYes
Top Marginal Rate8%
Sales Tax0%
LLC Filing Fee$0
Annual Report Fee$None
Standard DeductionN/A

Self-employed pay both federal and Wisconsin state tax.

Wisconsin Income Tax Brackets (2026)

Tax RateFromTo
3.5%$0$14,680
4.4%$14,680$50,480
5.3%$50,480$323,290
7.7%$323,290No limit

Wisconsin Quarterly Tax Deadlines

Q1
Apr 15
Q2
Jun 16
Q3
Sep 15
Q4
Jan 15

Frequently Asked Questions

How much does it cost to register a business in Wisconsin?
LLC filing fees vary by state. Additional costs: registered agent ($50-300/year), business licenses, EIN (free), DBA registration if using a trade name. See the full breakdown above.
Do I need a business license in Wisconsin?
Most businesses need a general business license from the city/county. Professional licenses may be required for specific trades. Wisconsin has specific requirements — check the business registration page.
What are the annual fees for an LLC in Wisconsin?
Annual report/franchise tax fees vary significantly. Some states have zero annual fees, others charge $800+ (California). Failure to file can result in penalties or administrative dissolution.