Yes, a landlord can increase your security deposit, but only at certain moments and only up to the limit your state sets. The most common moment is lease renewal. On a month-to-month tenancy, a landlord can raise it with proper written notice. During a fixed-term lease, the amount is locked in unless the lease itself allows a change or you alter the tenancy by, for example, adding a pet. Because the rules vary significantly by state, your local landlord-tenant statute is where the real answer lives.
When an Increase Is Allowed
A fixed-term lease is a contract. If you signed for one year, the landlord cannot raise the deposit partway through that term. The only exception is a clause written into the original lease that specifically permits a mid-term deposit increase, which is rare but worth checking for.
Lease renewal is when most deposit increases happen. When your current lease ends and you negotiate a new one, the landlord can propose new terms, including a higher deposit. If your rent is going up, the landlord may raise the deposit to keep it proportional, especially in states where the cap is tied to a multiple of monthly rent.
For month-to-month tenancies, the landlord can increase the deposit with written notice, much like a rent increase. The required notice period varies by state but is commonly 30 days. Some states require longer notice for larger increases or for tenants who have lived in the unit for an extended period.
A mid-lease increase can also come into play if you change the terms of your tenancy. Adding a pet that was not part of the original agreement is the most common example. Significant alterations to the unit, like installing a hot tub or converting a room, could also give the landlord grounds to request additional deposit funds.
How High the Total Can Go
Most states cap how much a landlord can hold as a security deposit, and any increase must keep the total within that cap. Limits are typically expressed as a multiple of your monthly rent. The most common caps are one month’s rent or two months’ rent, though the exact figure depends on your state. A handful of states impose no statutory cap at all.
Here is how the math works. If your state caps the deposit at two months’ rent and your rent is $1,500, the maximum deposit is $3,000. If you already paid $1,500 up front and your rent rises to $1,600 at renewal, the new cap becomes $3,200, so the landlord could request up to $1,700 more. If you have already paid the maximum allowed, the landlord cannot collect another dollar regardless of any lease change.
Some states set different caps depending on the type of unit. Furnished apartments sometimes carry a higher allowable deposit than unfurnished ones. A few states also set lower caps for elderly tenants. Every deposit dollar counts toward the cap, including any pet deposit.
Pet Deposits Count Too
Landlords often charge extra when a tenant brings a pet into the unit, but how that charge is classified matters. A refundable pet deposit is legally treated the same as your regular security deposit in most states, meaning it counts toward the statutory cap. If your state limits deposits to two months’ rent and you have already paid that amount, the landlord cannot tack on an additional pet deposit.
Non-refundable fees are treated differently. Some states allow landlords to charge a separate non-refundable pet fee or cleaning fee that sits outside the deposit cap. Other states prohibit non-refundable deposits altogether, treating any money collected at the start of a tenancy as refundable by default. The label in your lease is not what controls this; your state’s statute is. If a charge functions like a security deposit, courts in many jurisdictions will treat it as one regardless of what the landlord calls it.
One firm exception: landlords cannot charge any pet deposit or pet fee for a service animal or emotional support animal under the Fair Housing Act. Requiring extra money for a disability-related assistance animal is considered discrimination.
Notice the Landlord Must Give
A landlord must give you written notice before increasing your security deposit. A verbal conversation or a casual mention does not count. The notice should state the new total deposit amount and when the additional payment is due, so you have clear documentation of what is being requested.
The required notice period is set by state law and usually mirrors the notice required for a rent increase. For month-to-month tenancies, 30 days is the most common requirement, though some states mandate 60 or even 90 days depending on how long you have lived there or how large the increase is. For fixed-term leases, the increase takes effect only when you sign a new lease, so the notice is built into the renewal negotiation itself.
If your landlord fails to follow the proper notice procedure, the increase may not be enforceable even if the dollar amount itself is within the legal cap. That is one of the first things to check when you receive a deposit increase request.
If You Live in Federally Assisted Housing
Different rules apply to public housing and units subsidized through federal programs. A public housing agency can require a security deposit, but it cannot exceed one month’s rent or a reasonable fixed amount set by the housing authority, and tenants are allowed to accumulate the deposit gradually rather than paying it all at once.1HUD Exchange. How Much Can a Public Housing Agency (PHA) Charge for a Security Deposit
For other HUD-assisted housing programs, the deposit is set at one month’s total tenant payment or $50, whichever is greater. Landlords in these programs must also pay interest on the deposit, and any unused balance plus accrued interest must be returned at the end of the tenancy.2eCFR. 24 CFR 880.608 – Security Deposits
Because these caps come from federal regulation, a landlord in a federally assisted program cannot increase your deposit beyond them even if state law would otherwise allow a higher amount.
How to Respond to an Increase Request
Verify It Is Legal
Check three things: timing, amount, and notice. Was the increase requested at an appropriate time, such as lease renewal or with proper advance notice for a month-to-month tenancy? Does the new total exceed your state’s deposit cap, counting any pet deposit already paid? Did the landlord give written notice with the required lead time? If any of these elements is wrong, the request may not be enforceable.
Negotiate If the Amount Is a Stretch
Even when the increase is legal, you have room to negotiate. Propose paying the extra amount in installments over two or three months rather than all at once. Landlords with a reliable paying tenant often prefer a payment plan over the cost of finding someone new. If you reach an agreement, get the terms in writing and signed by both sides. A handshake deal offers no protection if a dispute comes up later.
Push Back on Illegal Requests
If the increase exceeds the legal cap or arrived without proper notice, respond in writing. Keep the tone professional and cite the specific reason you believe the request is unlawful. Many landlords back down once they realize the tenant knows the rules. If the landlord insists, you can file a complaint with your local housing authority or take the matter to small claims court. In many states, a landlord who collects more than the legal maximum faces penalties beyond returning the excess, including statutory damages of one to three times the overcharge.
One reality worth knowing: refusing a legal deposit increase does not protect your tenancy. Outside of rent-controlled jurisdictions, a landlord can generally decline to renew your lease when it expires for any lawful reason, including your refusal to agree to new terms. Your leverage is strongest during the renewal conversation, not after.
Protect Yourself When the Deposit Grows
The bigger your deposit, the more money is at stake when you eventually move out. Every time your deposit amount changes, update your records of the property’s condition. Take timestamped photos or video of every room, focusing on any existing damage, and email copies to your landlord so there is a clear record both parties can reference later. Some states require landlords to provide a written move-in checklist; where that requirement exists, insist on completing it.
Normal wear and tear covers gradual deterioration from everyday living, like faded paint, minor scuffs, and worn carpet in high-traffic areas. Actual damage, like a hole in the wall or a broken window, is different, and landlords can deduct repair costs for that from your deposit. They cannot charge you for routine maintenance performed between any two tenants.
After you move out, your landlord must return the deposit within a deadline set by state law, typically 14 to 45 days, with 30 days the most common. If any amount is withheld, the landlord usually must provide an itemized statement. If your deposit was increased during the tenancy, the full current amount is what the landlord must account for at move-out, not just what you paid when you first moved in. Many states impose automatic penalties on landlords who miss the return deadline, ranging from losing the right to withhold any deductions to owing the tenant double or triple the deposit.