South Dakota Security Deposit Laws: The One-Month Cap, 21-Day Return, and the Two-Hundred-Dollar Penalty
Deposit Cap · Allowable Deductions · 21-Day Return · Itemized Accounting · Interest · Penalties
South Dakota security deposit law is built on two short statutes — Codified Laws section 43-32-6.1, which caps the deposit at one month’s rent, and section 43-32-24, which sets the return deadline, the itemized accounting, and the penalty for getting it wrong. The rules are compact, but the deadlines are unforgiving: a landlord who returns the deposit and a written statement on time is on solid ground, while one who misses the twenty-one-day deadline or skips the accounting can forfeit the right to keep anything and owe a penalty on top. This guide walks the whole South Dakota framework end to end: how much you may collect, what you can and cannot deduct, the twenty-one-day return clock and the forty-five-day accounting, the absence of any interest rule, and the up-to-two-hundred-dollar penalty a court can impose for bad-faith withholding.
Whether you own one rental in Sioux Falls or a small portfolio across the state, the rules below apply the same way, because sections 43-32-6.1 and 43-32-24 govern statewide. South Dakota has no local rent boards layering interest or extra notice steps on top, so the framework here is the whole picture for most landlords. Everything here is general information, not legal advice; confirm the current figures and consult a licensed South Dakota attorney before acting on a specific dispute.
Below, a short overview video summarizes the South Dakota deposit rules; the sections that follow break down each piece in detail — the one-month cap and its special-conditions exception, deductions versus normal wear and tear, the twenty-one-day return timeline, the itemized accounting, the interest question, penalties, the move-out walkthrough, and the small-claims path if a dispute cannot be resolved.
South Dakota Security Deposit Rules at a Glance
Primary Statutes
Codified Laws 43-32-6.1 & 43-32-24
Deposit Cap
One month’s rent (special-condition exception)
Return Deadline
Twenty-one days after tenancy ends + address
Bad-Faith Penalty
Up to two hundred dollars + forfeiture
The One-Month Deposit Cap — and Its Narrow Exception
The starting rule in South Dakota is simple: the deposit is capped at one month’s rent. Under South Dakota Codified Laws section 43-32-6.1, a lessor of residential premises may not demand or receive a security deposit in an amount or value greater than one month’s rent. The statute also fixes what counts as a deposit in the first place: any money whose function is to secure the performance of a residential rental agreement, or any part of that agreement, is deemed a security deposit — no matter what the lease calls it. That definition matters, because it prevents a landlord from dodging the deposit rules by relabeling the same money as a fee.
There is one exception, and it is narrow. A larger deposit may be agreed on between the landlord and the tenant where special conditions pose a danger to the maintenance of the premises. In plain terms, if something about the tenancy — a pet, a home business, or another circumstance that genuinely raises the risk to the unit — creates a real threat to the property, the parties may agree in writing to a deposit above one month’s rent. The exception is not a loophole for charging more across the board; it requires an actual special condition and a mutual agreement, ideally documented in the lease.
Do Not Treat the Exception as a Blank Check
The special-conditions exception in section 43-32-6.1 is often misread as permission to charge whatever a landlord wants. It is not. Absent a genuine special condition posing a danger to the premises — and a written agreement to the larger amount — the one-month ceiling controls, and a deposit above it can be challenged. When you rely on the exception, write down the specific condition and the tenant’s agreement so the higher figure is defensible if a dispute arises. Always verify the current cap before you set a deposit amount.
Put the Amount in the Lease
Set the deposit at or below one month’s rent and state the exact amount in the lease. If you are relying on the special-conditions exception for a higher figure, name the condition and record the tenant’s written agreement in the lease itself. The sharper rules in South Dakota are not about the cap — most landlords stay at or under one month’s rent without difficulty — but about the return: the twenty-one-day deadline and the penalty for bad-faith retention, which is where nearly every deposit dispute actually arises.
| Situation | Maximum Deposit in South Dakota |
|---|---|
| Ordinary residential tenancy | One month’s rent |
| Special conditions pose a danger to the premises, agreed in writing | More than one month’s rent, by mutual written agreement |
| Money labeled a “fee” but held to secure the rental agreement | Deemed a security deposit — still subject to the cap and return rules |
Takeaway
The South Dakota deposit cap is one month’s rent under section 43-32-6.1, unless special conditions pose a danger to the premises and both sides agree in writing to more. Any money held to secure the rental agreement is a deposit, whatever it is called. Verify the current cap before setting any deposit.
What a Landlord May Deduct — and What Counts as Wear and Tear
A security deposit secures the landlord against specific losses, not against the ordinary passage of time. South Dakota recognizes a limited set of purposes for a lawful deduction, and the landlord who charges outside them invites a dispute — and, if the withholding is in bad faith, a penalty.
Permitted Deductions
- Unpaid rent. Rent that remains owed for the final month or any earlier period of the tenancy.
- Unpaid utilities the tenant owed. Utility charges the lease makes the tenant’s responsibility that were left unpaid at move-out.
- Repair of damage beyond ordinary wear and tear. The cost to repair a cracked window, a pet-stained carpet, a hole punched in a wall, or similar damage the tenant or their guests caused.
Not Deductible — Ordinary Wear and Tear
Ordinary wear and tear is the natural deterioration that comes from living in a unit normally, and the landlord must absorb it. In South Dakota these are treated as non-deductible:
- Faded or lightly scuffed paint, and small nail holes from hanging pictures.
- Carpet worn thin along walkways from ordinary foot traffic, with no stains or pet damage.
- Minor marks, loose grout, or aged caulk around tubs and sinks.
- Worn but still-functioning appliances and fixtures that simply reached the end of their useful life.
The Line That Decides Most Disputes: Damage Versus Wear and Tear
The distinction that matters most is damage versus wear and tear. A cracked window, a pet-stained carpet, or a hole punched in a wall is damage you can charge for. Faded paint, lightly worn carpet, and small nail holes are wear and tear — and charging for them is the single most common reason a South Dakota deposit deduction is challenged and reversed. When in doubt, ask whether the condition came from ordinary use or from abuse. And when repainting or carpet replacement is genuinely justified by damage, remember that paint and carpet have a finite useful life; the fair charge accounts for their age rather than billing the tenant for a brand-new surface.
Takeaway
You may deduct only for unpaid rent, tenant-owed utilities, and damage beyond ordinary wear and tear. Faded paint, worn carpet, and small nail holes are wear and tear you absorb. Ask whether a condition came from use or abuse, and account for the age of paint and carpet rather than charging for new.
The Twenty-One-Day Return Deadline and the 45-Day Accounting
The deadline South Dakota landlords miss most often is the twenty-one-day return rule. Under South Dakota Codified Laws section 43-32-24, within twenty-one days after the tenancy ends and the landlord receives the tenant’s forwarding mailing address or delivery instructions, the landlord must do one of two things: return the deposit, or furnish the tenant a written statement showing the specific reason for withholding the deposit or any portion of it. Two events start the clock together: the end of the tenancy and receipt of the tenant’s address.
The Deadline Changed on 1 July 2026: Fourteen Days Became Twenty-One
This is the single most commonly mis-stated figure in South Dakota rental law right now. 2026 Senate Bill 4, published as South Dakota Session Laws 2026, chapter 179, section 1, amended section 43-32-24 and lengthened the return period. The Governor signed the act on 12 February 2026. It carries no emergency clause and prescribes no effective date of its own, so it took effect on 1 July 2026 under the default rule in Codified Laws section 2-14-16, which makes the first day of July the date a regular-session act begins to operate. The codified section on the Legislature’s own site now reads “within twenty-one days,” and its source line ends “SL 2026, ch 179, § 1.”
Two details matter for anyone checking this against another source. First, only the return-or-statement deadline moved. The forty-five-day itemized accounting on the tenant’s request was left exactly as it was, so South Dakota still runs two separate clocks and they now sit twenty-one and forty-five days out rather than fourteen and forty-five. Second, South Dakota’s enrolled acts restate an amended section in full with no strike-through, so Senate Bill 4 shows what the law now says and is silent about what it used to say — the word “fourteen” appears nowhere in it. The authority for the change itself is the Legislative Research Council’s 2026 Title Summaries memorandum, which records that Senate Bill 4 “increases, from fourteen days to twenty-one days, the time within which a landlord must return a tenant’s security deposit after termination of a tenancy.”
Most Published South Dakota Guidance Is Still Printing Fourteen Days
Because the amendment is recent and the codified text carries no banner announcing it, a large majority of the South Dakota deposit pages, templates and landlord checklists in circulation — including several that rank at the top of a search for this topic — still state the deadline as fourteen days or “two weeks.” A landlord who works to fourteen days is early rather than late, so the stale figure is not itself dangerous. A tenant reading it, however, may conclude that a landlord who has not paid by day fifteen is already in breach and has forfeited the whole withholding, which since 1 July 2026 is not the case. Check the date on anything you read, and check the section’s own source line before relying on a number.
The Itemized Accounting Within Forty-Five Days
The twenty-one-day statement is not the end of the landlord’s duty. Under section 43-32-24, when the landlord has withheld part of the deposit, the tenant may request an itemized accounting, and the landlord must provide it within forty-five days after the tenancy ends. Think of it as two layers: within twenty-one days, return the money or state the reason for withholding; then, on the tenant’s request, deliver a detailed line-by-line accounting within forty-five days. A landlord who takes deductions should be ready to itemize each one — naming the deduction and its amount — and to back each line with evidence.
Missing the Deadline Forfeits the Whole Withholding
Section 43-32-24 is emphatic on this point: a landlord who fails to comply — who misses the twenty-one-day deadline, or fails to provide the required written statement and itemized accounting — forfeits all right to withhold any portion of the deposit. That is true even for real, documented damage. The deadline is treated as a hard rule, not a target. Calendar the twenty-one days the moment the tenancy ends and the tenant’s address arrives, and mail the deposit and statement with proof of mailing well before day twenty-one.
The Forwarding Address Starts the Clock
Because the twenty-one-day deadline runs from the end of the tenancy and the landlord’s receipt of the tenant’s forwarding address, a tenant who wants a prompt refund should provide that address at move-out. For the landlord, the practical rule is the mirror image: the day the tenant’s forwarding address arrives, calendar the twenty-one-day deadline and mail the statement and any refund to that address by a method you can prove. Do not sit on the funds — once the tenancy has ended and the address is in hand, the clock is running.
Takeaway
Return the deposit or a written statement of reasons within twenty-one days of the tenancy ending and the address arriving, and provide an itemized accounting within forty-five days on request. Miss the deadline or skip the statement and you forfeit the right to keep anything — even for genuine damage — under section 43-32-24.
Itemizing Deductions the Right Way
A South Dakota deduction is only as good as the written record that supports it. When you keep any part of a deposit, the tenant is entitled to a statement of the specific reason within twenty-one days and, on request, an itemized accounting that names each deduction and its amount within forty-five days. A lump-sum figure with no breakdown does not satisfy section 43-32-24 and is treated as if no accounting was given, which puts the whole withholding at risk.
Tie each line on that accounting to evidence: a dated move-in and move-out photo, a signed condition checklist, and the invoice or estimate behind the repair. The difference between a deduction that survives and one that gets reversed is almost always the paper trail. “Professional carpet cleaning to remove pet odor, invoice attached” survives; a bare line that reads “cleaning” with a number and nothing behind it does not. Our guide to South Dakota habitability laws explains the maintenance baseline that separates the landlord’s own upkeep duty from damage you may charge to the tenant, and a documented South Dakota move-in and move-out checklist keeps the condition record consistent from one tenancy to the next.
The Single Most Common Failure
The deduction South Dakota landlords lose most often is the vague one: a line that reads “cleaning” or “painting” with a number and nothing behind it. A tenant can challenge that in small claims and usually win, because the landlord cannot show the work, the cost, or that it went beyond ordinary wear and tear. Specificity is the whole game. When you do withhold, a clean South Dakota security deposit itemization form keeps the accounting organized and defensible.
Interest and Holding the Deposit
South Dakota keeps this part simple. There is no statewide requirement to pay interest on a security deposit, and no requirement to hold the deposit in a separate escrow account. A landlord may hold the deposit during the tenancy in an ordinary account and pay no interest, which is entirely lawful. The only holding-related obligation is the one that matters most: returning the deposit, or the written statement of reasons, within the twenty-one-day window of section 43-32-24.
Even without an interest or escrow mandate, holding the deposit separately from operating cash is sound practice. It keeps the twenty-one-day return clean, and it gives you a clear record if a tenant later disputes how the money was handled. A deposit that has been commingled with rent and expenses for a year is harder to account for than one that sat untouched in its own account.
Non-Refundable Fees and the “It’s a Deposit” Test
South Dakota’s statute defines a security deposit by its function: any money whose purpose is to secure performance of the rental agreement is a deposit, regardless of the label. That means a landlord cannot avoid the return and accounting rules of section 43-32-24 simply by calling deposit money a “non-refundable fee.” A genuine charge for a distinct service may be a different matter, but money that operates as security for the tenancy is treated as a refundable deposit and must be accounted for at move-out. When a charge is really securing the lease, treat it as a deposit and follow the return rules.
Takeaway
South Dakota has no interest requirement and no separate-account mandate for security deposits. Hold the deposit as you like during the tenancy — but keep it segregated as a matter of good practice, and remember that money held to secure the lease is a deposit whatever you call it, subject to the twenty-one-day return.
Penalties for Bad-Faith Withholding
South Dakota backs its deposit rules with real teeth. Under South Dakota Codified Laws section 43-32-24, a landlord who in bad faith retains a deposit or any portion of it — including by failing to provide the required written statement and itemized accounting — is liable to the tenant for the amount wrongfully withheld plus punitive damages of up to two hundred dollars, together with the tenant’s costs. And separately, a landlord who fails to comply with the section forfeits all right to withhold any portion of the deposit. The two consequences stack: forfeiture of the deduction, and a penalty on top.
Bad faith is not merely being wrong about a deduction. It generally means the landlord acted unreasonably — ignoring the twenty-one-day deadline, refusing to itemize, inventing charges, or keeping the deposit with no legitimate basis. Because that exposure attaches to a bad-faith failure to meet the deadline or account for the deductions, a landlord with an otherwise reasonable deduction can still face the penalty by being late or by failing to provide the itemized accounting on request. The pattern is consistent: the penalty is rarely about the deduction itself and almost always about missing the deadline or skipping the itemized statement.
The Deadline Is the Deduction
The lesson South Dakota landlords learn the hard way is that the penalty usually turns on procedure, not on the size of the charge. Miss the twenty-one-day return, or skip the itemized accounting on request, and a court can strip the entire withholding and add up to two hundred dollars plus the tenant’s costs — even where the underlying damage was real. The cost of doing it right — a timely statement and a clear accounting — is trivial next to the cost of doing it wrong. Calendar the deadline the day the tenancy ends and the address arrives, and send a written, itemized accounting every time.
The Move-Out Procedure, Step by Step
Put the rules together and the South Dakota move-out becomes a repeatable checklist rather than a judgment call. Follow this sequence and penalty exposure all but disappears.
Set the deposit within the cap
Collect no more than one month’s rent, and put the amount in the lease. If a special condition posing a danger to the premises supports more, name it and record the tenant’s written agreement under section 43-32-6.1.
Document condition at move-in
Record the unit room by room with dated photos and a signed condition checklist, so damage can later be separated cleanly from ordinary wear and tear.
Inspect and calculate lawful deductions
At surrender, inspect against the move-in record. Deduct only for unpaid rent, tenant-owed utilities, and damage beyond wear and tear, with an invoice or estimate for each charge.
Prepare the written statement and accounting
Write a statement of the specific reason for any withholding, and an itemized list naming each deduction and its amount, ready to deliver within forty-five days on request.
Return within twenty-one days
Within twenty-one days after the tenancy ends and you receive the tenant’s forwarding address, mail the remaining deposit and the written statement by a method that gives you proof of mailing.
A thorough move-out record starts at move-in. Use a documented South Dakota move-in and move-out checklist and photographs at both ends so you can prove exactly what the tenant caused. When you do withhold, a clean South Dakota security deposit return letter keeps the statement and accounting organized and defensible.
When a Dispute Reaches Small Claims Court
Most deposit disputes never reach a courtroom, but when they do in South Dakota, they usually land in small claims court — a forum designed to be used without a lawyer. As of 2026, a South Dakota small claims case can be brought for amounts up to twelve thousand dollars, which comfortably covers a deposit dispute and the statutory two-hundred-dollar penalty in most cases. Verify the current limit, which the Legislature can adjust over time.