What Wyoming law actually requires
Wyoming's security deposit statute, Wyo. Stat. § 34-2-213, sets a single hard deadline: within 30 days of the tenant vacating the premises, the landlord must do one of two things. Return the full deposit. Or deliver an itemized written statement explaining every deduction, along with any remaining balance.
Both obligations fall inside the same 30-day window. There is no grace period for mailing. There is no exception for landlords who are busy or disorganized. Day 31 is late, and late is evidence that the landlord had no reasonable cause to hold the money.
The statute also shifts the burden of proof. It is not your job to prove that your landlord wrongfully withheld the deposit. Under Wyoming law, the landlord has to prove that every deduction was reasonable and necessary. That's an unusual advantage for tenants, and a well-drafted demand letter makes sure the landlord understands it exists.
What your landlord can legally keep
Wyo. Stat. § 34-2-213(c) limits deductions to four specific categories. Anything outside this list is not a lawful basis for withholding any portion of the deposit.
Unpaid rent. Rent actually owed through the date you vacated. Not speculative future rent if you moved out early, only what had accrued and remained unpaid.
Unpaid utilities. Utility charges the lease made you responsible for that you left outstanding. The landlord needs documentation from the utility provider, not just an estimate.
Damage beyond normal wear and tear. This is where most disputes live. Holes in walls, broken fixtures, deep carpet stains, damaged blinds, missing hardware. Normal wear and tear, meaning the gradual decline you'd expect from ordinary use over time, is never deductible. Faded paint, minor scuffs, worn carpet after years of normal foot traffic: those are the landlord's cost of maintaining a rental property.
Cleaning costs. Only if the unit was left in a condition materially worse than it was at move-in, and only to the extent of restoring it to that baseline. A landlord cannot charge for cleaning because they prefer a professional clean when the unit was already clean at move-out.
Wyoming sets no statutory cap on the size of a security deposit a landlord can collect, which means the stakes on deductions can be high. Large deposits with questionable itemizations are exactly where a demand letter does its best work.
The 30-day clock and what it means for you
The 30-day period starts the day you vacate, which means the day you return the keys and are no longer in possession. If your lease ended on the 1st and you handed the keys over on the 3rd, the clock starts on the 3rd.
Providing a forwarding address protects you. If a landlord claims they couldn't locate you to send the itemization, a forwarding address on the lease or in a written move-out notice eliminates that argument. Put it in writing when you move out.
Once the 30 days pass without a return or a proper itemized statement, Wyo. Stat. § 34-2-213(d) kicks in. The landlord becomes liable for the wrongfully withheld amount, plus court costs and reasonable attorney's fees. Note that Wyoming does not have a statutory penalty multiplier. There is no automatic 2x or 3x damages provision the way California and some other states have. What Wyoming does have is attorney's fees shifting, which is actually a serious financial consequence. An attorney representing you in a $2,000 deposit dispute can run up legal costs that dwarf the underlying amount. That's leverage.
Calculator
What you may be owed
Estimate only. Uses your state's return window and bad-faith multiplier. Not legal advice.
Evidence you'll need before you write the letter
A demand letter without documentation is a complaint. A demand letter with documentation is a legal threat. Gather the following before you draft a word.
Proof you paid the deposit. A bank statement, a cancelled check, a written receipt, or a line item in the lease itself naming the deposit amount. This is your baseline.
Move-in condition documentation. Photos with timestamps, a move-in checklist signed by you and the landlord, any written notes from the start of the tenancy. If you have these, the landlord's deduction claims for "damage" can be compared directly against the condition you inherited.
Move-out condition documentation. Photos and video from the day you left, ideally timestamped. Walk every room, open every cabinet, photograph every wall and fixture. This evidence is most powerful when taken on the day you hand over the keys.
The lease. The full signed copy. You need it to confirm which utilities you were responsible for, whether any deductions were authorized by the lease, and what the lease said about cleaning requirements at move-out.
Any communication after move-out. Texts, emails, voicemails, or letters from the landlord referencing the deposit. A landlord who says "I'll send your deposit check soon" and then doesn't is inconsistent with a claim of reasonable cause.
What the landlord sent you. If you received an itemized statement, keep it. You'll be responding to specific line items in the demand letter.
If the 30 days passed and you received nothing at all, that absence is your evidence. Document the silence with a screenshot of your email inbox, a phone call log, or simply a statement of fact in the letter itself.
Writing a Wyoming deposit demand letter that gets results
Wyoming's demand letter framework is different from states with multiplier penalties. You don't have a 2x or 3x threat hanging over the letter. What you have is the threat of attorney's fees, the 30-day statutory deadline, and the burden-shift that puts the landlord on the hook to justify every deduction. The letter has to make all three of those facts explicit.
Keep it short. One page. Landlords read short letters. Here's what the letter must include.
Subject line. "Demand for return of security deposit pursuant to Wyo. Stat. § 34-2-213." Name the statute in the subject line. This signals you know the law.
Statement of facts. Your name, the rental address, your move-in and move-out dates, the deposit amount paid, and what (if anything) has been returned or itemized. Keep it factual, no adjectives, no emotional framing.
The statutory citation. Quote Wyo. Stat. § 34-2-213 directly. Name the 30-day deadline. If the deadline has already passed, say so and state the date it passed.
The specific demand. A dollar figure. The amount wrongfully withheld. A deadline for payment, typically 10 to 14 days from the date of receipt.
The consequence. If payment is not received by the stated deadline, you will file in Wyoming District Court under the simplified civil procedure docket for the wrongfully withheld amount, court costs, and reasonable attorney's fees as authorized by Wyo. Stat. § 34-2-213(d). Do not threaten things you won't do. This consequence is real and straightforward.
Your signature and contact information. A mailing address and email for the response. Sign the letter.
The tone should be factual and direct. This is not a complaint letter. It is a legal demand. The landlord's attorney, if they consult one, should read it and immediately recognize that responding with a check is the cheaper option.
If the landlord still won't pay
If your deadline passes with no response, file a Wyoming small claims case for your withheld security deposit as the next step. Wyoming District Courts hear simplified civil procedure cases up to $6,000, which covers most deposit disputes at the individual recovery amounts Wyoming typically sees.
Small claims in Wyoming is designed for self-represented parties. The forms are straightforward, the hearings are short, and the landlord faces the same burden of proof they faced with the demand letter. The difference is that now a judge is watching. The attorney's fees provision in Wyo. Stat. § 34-2-213(d) still applies, which means a judge can award your filing costs and reasonable fees on top of the withheld amount.
One thing to know: Wyoming's small claims limit of $6,000 is lower than California's or Texas's. If your deposit and withheld amount together are close to that ceiling, file carefully and document every cost you're claiming. Court costs and attorney's fees can push a claim toward the limit.
What happens after the letter goes out
Most landlords respond within the demand period, typically the first week. The combination of a specific statute citation, a named deadline, and a credible escalation threat is enough to prompt payment in the majority of cases. Our demand letters are paid before court action 85% of the time.
If your landlord responds with a partial payment, evaluate whether the remaining deductions are supported by the itemized statement they provided. If the documentation for a deduction is thin or nonexistent, write back and say so. Partial payment is not an acceptance of the remaining deductions.
If your landlord responds with an itemized statement that arrived after the 30-day window, the lateness itself is relevant. A statement that arrives on day 35 was not provided within the statutory period. The landlord may still try to justify individual deductions in court, but they've already lost the procedural protection the statute offered them for timely compliance.
If your landlord ignores the letter entirely, that silence is the strongest version of your case. No response means no reasonable cause was offered. File.
Sources & further reading
Primary sources
We draft from authoritative statutes and state-court self-help guidance. Every article on Sue.com links to the primary source so you can verify the citation yourself.