How to Start an LLC in Wisconsin (2026 Guide)
Wisconsin charges $130 to form your LLC online and $25 a year after that — genuinely affordable numbers. But Wisconsin does two things almost no other state does: it files everything through the Department of Financial Institutions instead of a Secretary of State, and it runs annual reports on a quarterly deadline system tied to your formation date.
To start a Wisconsin LLC, file Articles of Organization with the Wisconsin Department of Financial Institutions (DFI) — not a Secretary of State, which is where most states handle this. The fee is $130 online through DFI's QuickStart system, or $170 by mail. Every LLC then files an Annual Report ($25 online / $40 by mail), due by the last day of the calendar quarter containing your formation anniversary — March 31, June 30, September 30, or December 31, depending on when you formed. Foreign LLCs pay more ($65 online / $80 by mail) and always file by March 31, regardless of formation date.
- State filing fee
- $130 online · $170 mail
- Filed with
- Dept. of Financial Institutions, not SOS
- Annual report
- Domestic $25 online / $40 paper
- Deadline system
- Last day of your formation quarter
- Late penalty
- Delinquent; later notice-and-cure process
- Local income tax
- None — anywhere in Wisconsin
What to Know Before You Form in Wisconsin
Wisconsin's costs are genuinely affordable, but two structural details are worth understanding clearly before you file:
- Everything routes through the DFI, not a Secretary of State — if you're used to researching other states, this is the single most common source of confusion for new Wisconsin founders.
- A real $40 discount for filing online — $130 online versus $170 by mail, one of the larger online-vs-mail gaps in this series.
- A quarterly annual report deadline — not one fixed date for everyone, but the last day of whichever calendar quarter contains your formation anniversary.
- No local income tax anywhere — a genuine simplification, since Wisconsin cities and counties don't layer their own income tax on top of the state rate.
Stop looking for a Wisconsin Secretary of State annual report — it doesn't exist. Wisconsin LLC filings, including your Articles of Organization and every Annual Report after, go through the Department of Financial Institutions (DFI), specifically its Division of Corporate & Consumer Services. This trips up founders coming from research on other states, where the Secretary of State handles this role. Bookmark DFI's Annual Report ID Lookup tool the day you form your LLC — it'll save you real time every year going forward.
How to Start a Wisconsin LLC in 8 Steps
Your name must be distinguishable from every Wisconsin entity and contain "LLC" or "Limited Liability Company." Search free through the DFI.
Every Wisconsin LLC must continuously maintain a registered agent — a WI resident or authorized entity with a physical in-state street address.
File the Articles of Organization
$130 online through QuickStart, or $170 by mail — filed with the DFI, not a Secretary of State.
Not required by Wisconsin, but it overrides state default rules and satisfies your bank.
Get Your Free EIN from the IRS
Your federal tax ID for banking, hiring, and Wisconsin Department of Revenue registration. Always free at IRS.gov.
File Your Annual Report by Your Quarter-End
Domestic: $25 online/$40 paper, due at the end of the formation-anniversary quarter; first report is in the year after formation. Foreign: $65 online/$80 paper, due March 31.
Get Business Licenses & Permits
No statewide general license — but sales tax registration, local permits, and professional board licenses as applicable.
Understand Wisconsin LLC Taxes
A graduated income tax from 3.5% to 7.65%, no local income tax anywhere, and a 5%+ sales tax that exempts groceries.
What a Wisconsin LLC Really Costs (2026)
| Cost Item | Amount | When |
|---|---|---|
| Articles of Organization (required) | $130 online · $170 mail | One-time, at formation |
| Annual report (required) | $25 online · $40 mail | Every year, quarter-end deadline |
| Registered agent service (optional) | Actual provider quote | Annual, if hired |
| Name reservation (optional) | $15 · valid 120 days | If reserving before filing |
| EIN from the IRS | $0 — always free | At IRS.gov |
| Franchise tax | $0 — none for default LLCs | Not applicable |
Bottom line: $130 to form online and $25/yr to maintain — a genuinely affordable, predictable cost structure once you know to look for the DFI instead of a Secretary of State. Model your exact setup below.
Wisconsin LLC Cost Calculator
Wisconsin LLC Cost Calculator
First-year + 5-year totals · Check current official instructions
Excludes state income tax and local permits. Filing online saves $40 upfront compared to mail.
The Quarterly Deadline System
This is Wisconsin's most distinctive administrative feature: instead of one fixed anniversary date, your Annual Report is due by the last day of the calendar quarter that contains your LLC's formation anniversary. Form in February (Q1)? Due March 31, every year. Form in May (Q2)? Due June 30. This gives you anywhere from roughly 1 to 3 months of runway after your actual anniversary date, depending on where in the quarter you fall. See Step 6 for the full breakdown and a calculator that finds your exact deadline.
Wisconsin LLC Taxes at a Glance
Default LLCs pass profits to your personal return, taxed at Wisconsin's graduated rate from 3.5% to 7.65% — the top rate applying above roughly $315,310 for single filers. There is no local income tax anywhere in Wisconsin. Add federal self-employment tax of 15.3%. Sellers collect 5% state sales tax plus local rates (typically 0.5% county tax, more in Milwaukee), for a combined average around 5.72% — and Wisconsin exempts groceries from sales tax entirely. Details in Step 8.
Ahmad Adil's Take: Wisconsin is genuinely one of the more affordable, well-organized states in this series once you get past the initial "wait, where's the Secretary of State?" confusion. The DFI runs a tight, sensible system — a real discount for filing online, a reasonable $25 annual fee, and a quarterly deadline structure that, once you understand it, is actually more forgiving than a single fixed date for a lot of founders. My honest advice: bookmark the DFI's Annual Report ID Lookup tool the same day your LLC is approved. That one small step eliminates the most common Wisconsin compliance mistake before it ever has a chance to happen.
- ✓Optional formation assistance; confirm filing scope, service pricing and submission responsibilities.
- ✓Optional formation assistance; confirm filing scope, service pricing and submission responsibilities.
- ✓Confirm registered-agent eligibility, coverage, included periods and renewal charges.
- ✓Review address-use rules and privacy policies; a service does not remove all information from public filings.
Disclosure: LLC School may earn a commission via this link, at no cost to you. See our advertising disclosure.
Domestic and foreign reporting differ
Wisconsin domestic LLC Annual Reports cost $25 online or $40 on paper and are due at the end of the formation-anniversary quarter, beginning the year after formation. Missing the report makes the entity delinquent; administrative dissolution is a later notice-and-cure process that DFI says typically follows several years of nonfiling. Do not treat that typical timing as an extension. Foreign LLC reports cost $65 online/$80 paper and are due March 31; foreign registration-termination procedures are separate.
Wisconsin LLC — FAQ
Ahmad Adil is the founder and CEO of LLC School. For filing and ongoing compliance, confirm the requirements with the responsible state agency. This is educational information, not legal or tax advice.
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