Security Deposit + Interest Owed
Last reviewed: January 2026
A security deposit return calculator estimates how much of your rental security deposit you should expect back after deductions for damages, cleaning, and unpaid rent. It helps tenants understand their rights and landlords document legitimate deductions.
Most states require landlords to return security deposits within 14–45 days of move-out with an itemized statement of deductions. Several states require landlords to pay interest on deposits held — Massachusetts (5%), New Jersey (bank passbook rate), Connecticut (5% or bank rate). Normal wear and tear cannot be deducted — only damage beyond normal use. Take dated photos at move-in and move-out. Send a demand letter via certified mail if your deposit isn't returned on time. Small claims court is the typical remedy — many states penalize landlords 2–3× the deposit for bad-faith withholding.
⚖️ Legal Disclaimer: Security deposit laws vary significantly by state and municipality. Verify current requirements with your local tenant rights organization or attorney.
| State | Max Deposit | Return Deadline |
|---|---|---|
| California | 1 month rent (unfurnished) | 21 days |
| New York | 1 month rent | 14 days |
| Texas | No limit | 30 days |
| Florida | No limit | 15–30 days |
| Illinois | No limit | 30–45 days |
Security deposit regulations vary dramatically by state, and both landlords and tenants frequently misunderstand their rights and obligations. Most states cap security deposits at 1-3 months' rent: California limits deposits to 1 month's rent (effective July 2024 under AB 12), New York limits to 1 month's rent (since 2019 HSTPA reforms), while states like Texas and Florida have no statutory cap. Many states require landlords to hold deposits in separate, interest-bearing escrow accounts and provide written notice of the bank name, address, and account number. In states requiring interest (Connecticut, Florida, Illinois, Iowa, Maryland, Massachusetts, Minnesota, New Jersey, New Mexico, New York, North Dakota, Pennsylvania, Virginia), the landlord must pay accumulated interest to the tenant either annually or at lease termination.
| State | Maximum Deposit | Return Deadline | Interest Required? | Itemized Deduction List? |
|---|---|---|---|---|
| California | 1 month's rent | 21 days | No | Yes |
| New York | 1 month's rent | 14 days | Yes (if 6+ units) | Yes |
| Texas | No limit | 30 days | No | Yes |
| Florida | No limit | 15-30 days | Yes (if held 12+ mo) | Yes |
| Illinois | No limit | 30-45 days | Yes (5+ units, Cook Co.) | Yes |
| Massachusetts | 1 month's rent | 30 days | Yes | Yes |
Landlords can deduct from security deposits for unpaid rent, damage beyond normal wear and tear, and cleaning costs if the unit is left dirtier than when the tenant moved in. Normal wear and tear — which landlords cannot charge tenants for — includes minor scuffs on walls from furniture, small nail holes from hanging pictures, worn carpet from normal foot traffic, faded paint from sunlight exposure, slightly worn appliance knobs, and minor countertop wear. Damage that can be charged against the deposit includes large holes in walls, deeply stained or burned carpets, broken fixtures or appliances from misuse, unauthorized modifications, pet damage, missing or damaged blinds, broken door locks, and excessive filth requiring professional cleaning. The distinction between wear and tear versus damage is the most common source of security deposit disputes. Courts generally consider the tenant's length of occupancy — a carpet that shows wear after a 5-year tenancy is expected, while the same wear after 6 months suggests damage or misuse.
The single most important step tenants can take is conducting a thorough move-in inspection with dated, timestamped photos and videos of every room, surface, fixture, and appliance before moving in, and obtaining the landlord's signature on a written inspection report. This creates legally defensible documentation of pre-existing conditions. At move-out, repeat the process to prove the unit's condition at departure. Clean the unit thoroughly — professional cleaning costs $150-$300 and is almost always cheaper than what a landlord will deduct for cleaning. Remove all personal items, repair any damage you caused (small drywall holes can be patched for $5-$20 in supplies), and return all keys. Send a forwarding address in writing via certified mail, as many states start the return deadline from when the landlord receives a forwarding address. If the landlord improperly withholds your deposit, send a written demand letter citing the specific state statute requiring return, as this often resolves the issue without legal action.
Many states impose penalties on landlords who fail to return security deposits within the statutory deadline or who withhold deposits without proper itemization. These penalties can be substantial: in California, a landlord who wrongfully withholds may owe up to twice the deposit amount in damages. Massachusetts allows treble damages (3x the deposit) for violations. Connecticut penalizes landlords twice the deposit amount if returned late. Small claims court is the most practical venue for tenants seeking deposit recovery — filing fees are typically $30-$100, proceedings are informal (no lawyer required), and maximum judgment amounts ($5,000-$10,000 in most states) are sufficient for deposit disputes. Tenants who document their claims with move-in/move-out photos, the signed lease, all correspondence with the landlord, and receipts for any cleaning or repairs they performed win the majority of small claims deposit cases. For related rental cost analysis, see our Rent vs Buy Calculator and Budget Calculator.
Commercial lease security deposits operate under different rules than residential deposits — commercial tenants generally have fewer statutory protections. There are typically no caps on commercial deposit amounts, with landlords commonly requiring 3-6 months' rent or more for new businesses without established credit histories. Commercial deposits rarely require interest payments or separate escrow accounts. Landlords may require periodic deposit increases during long-term leases if the rent escalates. Some commercial landlords accept standby letters of credit from a bank instead of cash deposits — this preserves the tenant's working capital since the bank holds the guarantee without the tenant actually depositing cash. The letter of credit typically costs 1-3% of the deposit amount annually. For growing businesses, negotiating a burn-down clause that reduces the deposit over time as the tenant demonstrates reliable payment can free up significant capital — a $30,000 deposit that reduces by $5,000 annually after the second year eventually releases $20,000 back to the business over six years of occupancy.
Many states cap the maximum security deposit a landlord can charge. California limits deposits to two months' rent for unfurnished units and three months for furnished units. New York caps deposits at one month's rent. Massachusetts allows first month, last month, security deposit (one month), and lock change fee. Texas and several other states have no statutory limit, leaving it to market conditions. Some cities impose additional restrictions — for example, several municipalities now require landlords to accept security deposit insurance as an alternative to cash deposits, reducing the upfront cost for tenants. Check your local cost of living to understand how deposit amounts compare across markets.
Many states cap the maximum security deposit a landlord can charge. California limits deposits to one month's rent for unfurnished units and two months for furnished. New York caps at one month's rent statewide. Massachusetts allows first month, last month, security deposit (one month), and lock change fee. Texas has no statutory limit. Some states require landlords to hold deposits in separate interest-bearing accounts and provide tenants with the bank name and account number. Violations of deposit laws can result in the landlord owing the tenant penalties of one to three times the deposit amount plus attorney fees. Review related housing costs with our Cost of Living Calculator.
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See also: Rent Increase Calculator · Rent vs Buy Calculator · Small Claims Court Calculator