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State law · Wisconsin

Wisconsin security deposit law

How long your landlord has to return your deposit, what they can deduct, and what happens if they get it wrong.

Checked against Wis. Admin. Code ATCP § 134.06; Wis. Stat. § 100.20(5) on October 25, 2026 · By Michael

Short answer: Within 21 days after the tenant surrenders the unit, the landlord must return the deposit or account in writing for every amount deducted, sent to the tenant's last known address.

Return deadline21 days
Possible penaltyTwice the amount wrongfully withheld
Small-claims limit$10,000

How long does a landlord have to return a security deposit in Wisconsin?

Return deadline
Within 21 days after the tenant surrenders the unit, the landlord must return the deposit or account in writing for every amount deducted, sent to the tenant's last known address.Wis. Admin. Code ATCP § 134.06(2)
Itemized list
The itemized statement of deductions is due within the same 21 days.Wis. Admin. Code ATCP § 134.06(4)

Prefer a full page? Use the security deposit deadline calculator.

What happens if a Wisconsin landlord misses the deadline?

If the landlord misses it
The rule does not state a forfeiture; the remedy is double damages under Wis. Stat. § 100.20(5).Wis. Admin. Code ATCP § 134.06
Penalty
A tenant who loses money through a violation recovers twice the loss, plus costs and reasonable attorney's fees. A landlord's good-faith belief that a deduction was justified is not a defense.Wis. Stat. § 100.20(5)

What can a Wisconsin landlord deduct from your deposit?

What can be deducted: Only amounts reasonably necessary for tenant damage, waste or neglect; unpaid rent; utilities the tenant owes; certain government charges; and reasons in a separately signed nonstandard rental provision. (Wis. Admin. Code ATCP 134.06(3)(a)-(b))

Normal wear and tear: No amount may be withheld for normal wear and tear. (Wis. Admin. Code ATCP 134.06(3)(c))

Cleaning: Routine cleaning, painting or carpet cleaning cannot be withheld without unusual damage from tenant abuse, even if a nonstandard provision says otherwise. (Wis. Admin. Code ATCP 134.06(3)(c) (note))

What the itemized list must include: A written statement describing each item of damage or other claim and the amount withheld for each; the landlord may not misrepresent any claim. (Wis. Admin. Code ATCP 134.06(4))

More on common charges: normal wear and tear, cleaning, painting, and a missing itemized list.

Deadlines and steps on your side

Wisconsin also sets rules for tenants. Missing one of these can cost you part of your claim, so check them early.

Move-in condition report: Before accepting a deposit, the landlord must tell the tenant in writing that they may inspect the unit and report existing damage by a deadline at least 7 days after the tenancy starts, and may ask for a list of damage charged to the previous tenant. (Wis. Admin. Code ATCP 134.06(1))

Taking a deposit case to small claims court in Wisconsin

Small-claims limit: Wisconsin small claims covers money claims of $10,000 or less. (Wis. Stat. § 799.01(1)(d))

Most deposit disputes never get that far. A clear demand letter, sent by certified mail, often settles them first.

Good to know

  • Wisconsin courts have ordered landlords who missed the 21-day deadline to pay double the deposit even when their damage claims exceeded it, with those claims handled separately as a counterclaim.
  • The deadline applies even if you did not leave a forwarding address; the landlord sends to your last known address.

What to do if your Wisconsin landlord kept your deposit

  1. Pin down your dates. When you moved out, returned the keys, and gave a forwarding address in writing. Compare them with the deadline above.
  2. Gather your evidence. Move-in and move-out photos, the lease, the landlord's list of deductions, receipts and messages. The case checklist covers what matters.
  3. Send a demand letter by certified mail. Ask for the money, cite Wisconsin's rules, and give a deadline to pay. What a demand letter does.
  4. If they still don't pay, consider small claims court. You don't need a lawyer there.

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Sources

These rules come from the same verified table the Demand Letter Companion uses, checked against the sources below on October 25, 2026. Laws change; check the current official text before relying on a date.

Other states: see the guides for all 50 states and DC

This page is general legal information, not legal advice. Local ordinances can add rules, and your lease and facts matter. For advice about your situation, consult a licensed attorney in Wisconsin.