Security deposits for landlords: deductions, deadlines, and returns

A security deposit makes trouble at both ends of a tenancy. At move-in you have to pick a number your state allows, write the conditions into the lease, and document the unit well enough to prove its condition years later. Then the tenant leaves and a clock starts: somewhere between two weeks and two months, depending on your state, to inspect the unit, price the damage, separate what you can charge from what you cannot, and mail a refund with an itemized statement. Get the deductions wrong and you lose them. Get the deadline wrong and you can lose the entire deposit, plus a penalty.

This page is the map of the full lifecycle: charging, holding, deducting, returning. It follows one hypothetical $1,800 deposit from collection to a $1,126 refund, and it points to the deeper guide on each fight along the way, from wear and tear to small claims.

Charging it: the number, the lease, the baseline

Start with your state's cap. Many states limit deposits to one or two months' rent, a few allow three, and some set no cap at all. Several also count pet deposits and prepaid last month's rent toward the capped total, which surprises landlords who stack them. Read your statute before you write the lease, because a deposit collected over the cap can cost you the right to keep any of it later.

Say you rent a two-bedroom for $1,500 a month and take an $1,800 deposit, 1.2 months of rent. The lease should state the amount, the account disclosure if your state requires one, and the conditions under which you can deduct. Collect the money before keys change hands, not after.

The other half of charging it correctly costs nothing: a dated move-in inspection the tenant signs, with photos. You can never prove a tenant caused damage; you can only prove the unit did not have it on day one. The move-in and move-out inspection checklist covers that walk-through room by room. Most deposit fights are lost at move-in and only discovered at move-out.

Holding it: a liability, not income

For the life of the tenancy the deposit is the tenant's money sitting in your custody. It is not income when you collect it (the IRS treats it as a liability so long as you intend to return it), and in a number of states it cannot sit in your operating account: some require a separate account, some require escrow with disclosure to the tenant, and a few require you to pay interest on the balance. The rules, and what to do where your statute is silent, are in the guide to deposit escrow and commingling rules.

Wherever the money sits, record it per unit: the amount, the date received, and where it is held. A rent roll is the natural home for that record, and the free rent roll template carries a deposit column for this reason.

What you can deduct

Across states the deductible list is short and surprisingly stable. Four categories show up almost everywhere:

• Unpaid rent. The cleanest deduction there is: the ledger shows the charge, the ledger shows no payment, and the deposit covers the gap.
• Unpaid utilities the lease assigns to the tenant. Chargeable when the lease makes the tenant responsible and the final bill arrives unpaid.
• Damage beyond normal wear and tear. This line decides most disputes. Nail holes, faded paint, and carpet worn flat in the walkways are wear; crayon on the walls, pet urine in the pad, and a burn mark in the living room are damage. The item-by-item wear and tear guide walks the common items across that line, one by one.
• Cleaning to return the unit to its move-in condition. Not cleaning to a higher standard than you handed over, and in some states only when the lease says so.

What you cannot deduct matters as much: upgrades, repainting that was due anyway, and the full replacement price of anything already partway through its life. An eight-year carpet ruined in year six is a two-year loss, not an eight-year one; the useful-life math for carpet and paint works the proration in detail. Charging new-for-old is the fastest way to turn a defensible deduction into a losing one.

The worked example: $1,800, itemized

The tenant in that two-bedroom gives notice after two years. The carpet was four years old at move-in (eight-year expected life, $1,200 to replace), and the move-out walk against the move-in photos turns up pet stains in the bedroom carpet, one wall painted dark plum without permission, and a kitchen that needs more than a broom. The final water bill, which the lease assigns to the tenant, arrives unpaid. The itemization:

• Unpaid final water bill, per the lease: $84.
• Repaint one bedroom wall painted without permission (paint and labor, receipt attached): $150.
• Replace the pet-stained bedroom carpet, prorated: $1,200 ÷ 8 years is $150 a year, and 2 years of life remained, so the charge is $300, not $1,200.
• Cleaning to move-in condition (cleaner's invoice attached): $140.

Total deductions: $674. The refund is arithmetic, not judgment:

refund = deposit held − itemized deductions = $1,800 − $674 = $1,126

Notice what is not on the list: the other $900 of carpet, the hallway scuffs, the faded blinds. Each line that survived carries a description, a dollar amount, and a receipt behind it. A statement that reads “cleaning and damages, $674” claims the same money and wins none of it.

The deadline, and the letter that meets it

Nearly every state puts a clock on the return. Most deadlines fall between 14 and 45 days after move-out, a few run shorter, and a few stretch to 60. The same window usually covers both the refund and the itemized statement, and the penalties for missing it are not symbolic: in a number of states a blown deadline forfeits your right to withhold anything, and some let the tenant recover two or three times the deposit on top. A legitimate deduction delivered late becomes an illegitimate one.

So treat the move-out date as a trigger: the deadline goes on the calendar the day notice lands, the inspection gets scheduled, and the statement and check go out the door with days to spare, sent by a method that proves the date. The deposit return letter template gives you the statement format, and if the tenant vanished, the no-forwarding-address guide covers what most states expect you to do with the money. All of this lands in the middle of turnover, when you are also painting and re-listing, which is why the deadline gets missed by accident far more often than by greed.

The evidence underneath all of it

Every deduction above assumes you can prove three things with dated paper: the condition at move-in, the condition at move-out, and the money you actually spent in between. That documentation discipline has its own guide, the security deposit paper trail, and this page will not repeat it. The short version: photos at both ends, a signed condition report, and a receipt pinned to every line. I manage my own units from two time zones away, so the dated photo file is the only version of the unit my memory gets to keep.

If the tenant disputes the deductions anyway, the fight usually lands in small claims, where preparation beats indignation and where a log of dated tenant interactions quietly settles arguments about who said what.

Taxes, and keeping track of more than one

A deposit is not taxable income when you collect it, provided you intend to return it; IRS Publication 527 says so directly. The year you keep some or all of it, the kept amount becomes rental income, reported with your rents on Schedule E. The $674 in the example above is income in the year of the move-out, and the timing details, including last month's rent labeled as a deposit, are in the guide to kept deposits and taxes.

One deposit is a folder and a calendar entry. Five units with staggered leases are a tracking problem: five amounts, five baselines, and five clocks that each start without warning. Part of why I built rents.ai is that a spreadsheet kept dropping exactly this kind of slow-moving record. It tracks each tenant's deposit as its own record, unit by unit: the amount held, itemized deduction lines with a description and an amount each, evidence documents attached, and a returned amount derived from the lines rather than typed, so the statement you mail is a transcription of the record instead of a reconstruction. It does not know your state's statute and it will not mail the letter for you; the calendar stays your job.