Landlord Trust Account Rules in Washington State

In Washington, every security deposit must be held in a landlord trust account at a Washington financial institution or with a licensed escrow agent, never in your personal accounts. RCW 59.18.270 requires prompt deposit, a written receipt, and written notice of the depository's name and address.

Interest belongs to the landlord unless agreed otherwise in writing, and deposits must transfer to an equivalent trust account when the property sells. Licensed property management firms operate under additional trust account regulation on top of these rules.

What a Landlord Trust Account Is, and Why Washington Requires One

A landlord trust account is a bank account that holds money belonging to someone else. When a tenant hands you a security deposit, that money is not yours; it is the tenant's money, held by you as security for their performance under the lease.

Washington law treats it that way from day one. Under RCW 59.18.270, all money paid as a deposit or as security for the tenant's obligations must be promptly deposited into a trust account maintained for the purpose of holding tenant security deposits, at a financial institution or licensed escrow agent located in Washington.

The statute attaches several specific duties to that account:

• Prompt deposit. The money goes into the trust account promptly after you receive it, not whenever you get around to it.
• Written receipt. You must give the tenant a written receipt for the deposit.
• Depository notice. You must give the tenant written notice of the name, address, and location of the depository, and written notice of any subsequent change.
• Interest. Unless you and the tenant agree otherwise in writing, interest paid on the trust account belongs to the landlord.
• Transfer on sale. If the property changes hands during the tenancy, the deposit must move simultaneously to an equivalent trust account held by the successor landlord, with prompt notice to the tenant.

There is one more provision that explains why the legislature insists on all of this. The tenant's claim to deposit money has priority over any creditor of the landlord, including a trustee in bankruptcy or a receiver, even if the money was commingled. The deposit is supposed to survive anything that happens to your finances; the trust account is how the law makes that real in practice rather than just on paper.

What Commingling Actually Looks Like

Commingling is rarely a deliberate scheme. For most owners it is a drift that starts the day the deposit check arrives.

The common patterns look like this:

• The deposit sits in personal checking. The tenant's check gets deposited wherever the rent goes, usually the owner's everyday account, and never moves.
• "I'll move it later." The owner intends to open a separate account, but the tenancy starts, life happens, and the deposit quietly becomes part of the household balance.
• Deposit funds pay for repairs mid-tenancy. A furnace fails in February, the deposit is sitting right there, and the owner borrows from it planning to top it back up. The deposit is security for the end of the tenancy; it is not a maintenance reserve.

Each of these feels harmless in the moment. The problem is that a deposit mixed into your personal funds stops behaving like the tenant's money.

It gets spent, it gets counted as available cash, and when move-out arrives the owner is suddenly writing a refund check out of pocket, often in the same month they are paying for turnover work.

It also undermines you in any dispute. A tenant's attorney who discovers the deposit never saw a trust account has an easy story to tell, and the priority rule in RCW 59.18.270 means a court will treat that money as the tenant's regardless of where you parked it.

Setting Up a Compliant Landlord Trust Account, Step by Step

For a self-managing owner, the compliant setup is not complicated. It just has to happen in the right order and then be left alone.

• 1. Open the dedicated account. Open a separate account at a Washington financial institution, used only for tenant security deposits. Do this before you collect the deposit, not after.
• 2. Get the paperwork right first. Washington law (RCW 59.18.260) only allows you to collect a deposit if the rental agreement is in writing, states the conditions for withholding, and you complete a signed, dated move-in checklist describing the condition of the unit. Skip the checklist and you are liable to the tenant for the deposit amount.
• 3. Deposit on receipt. The deposit goes into the trust account promptly when you receive it.
• 4. Issue the receipt and depository notice. Give the tenant a written receipt plus written notice of the bank's name, address, and location. If you ever change banks, send a new notice.
• 5. Log it. Record the tenant name, unit, amount, date received, and date deposited. If you hold deposits for more than one tenant in the account, keep a simple ledger showing whose money is whose, and reconcile it against the bank statement.
• 6. Do not touch it until move-out. No borrowing for repairs, no sweeping interest into a vacation fund mid-tenancy, no using it as float.
• 7. Run the 30-day process at move-out. Within 30 days of the tenancy ending, send the refund or a full and specific itemized statement with supporting documentation: estimates received or invoices paid, receipts for materials, and if you did the work yourself, a statement of time spent and a reasonable hourly rate (RCW 59.18.280). Our guide to security deposits in Washington walks through that move-out flow in detail.

Good records carry this whole system. The move-in checklist, the receipt, the depository notice, dated photos, and the deposit ledger are what turn a deduction from an argument into a paper trail; our rental property documentation tips cover what to keep and for how long.

What It Costs When the Process Fails

Washington's deposit statutes are built so that procedural failures cost the landlord the deposit, and sometimes more. The consequences stack:

• No written checklist at move-in: you were never entitled to collect the deposit, and you are liable to the tenant for the full amount, plus court costs and attorney fees if they prevail (RCW 59.18.260).
• Missing the 30-day statement and documentation deadline: you are liable for the full deposit and barred from asserting any claim against it, even legitimate damage claims (RCW 59.18.280).
• Intentional refusal to provide the statement, documentation, or refund: the court may award the tenant up to two times the deposit, plus costs and reasonable attorney fees.
• Foreclosure without transferring or refunding the deposit: the foreclosed-upon owner is liable for damages up to two times the deposit (RCW 59.18.270).

Beyond the statutory penalties, there is a credibility cost that is harder to quantify. In any deposit dispute, the owner who can produce a trust account statement, a signed checklist, a written receipt, and an itemized accounting looks careful and acts from strength.

The owner who held the money in personal checking and reconstructed the paperwork afterward starts every conversation on the defensive.

Selling or Transferring the Property

Deposits do not stay behind when a property changes hands. Under RCW 59.18.270, when the landlord's status transfers to someone else during a tenancy, the deposit funds must simultaneously transfer to an equivalent trust account held by the successor landlord.

The successor must then promptly notify the tenant of the transfer and of the name, address, and location of the new depository. As a seller, make the deposit transfer an explicit line item at closing, with a written record of the amount per tenant; as a buyer, confirm you actually received the deposits and send the tenant notices right away.

Foreclosure has its own rule. If the deposit is not transferred to the successor after a foreclosure sale, the foreclosed-upon owner must immediately refund it to the tenant in full, or face liability of up to twice the deposit.

How Licensed Property Management Firms Handle Landlord Trust Accounts

Owners sometimes assume professional managers follow the same rules they do, just with more units. In fact, licensed firms operate under an additional layer of regulation written into Washington's real estate licensing law.

Under RCW 18.85.285, any funds a licensee controls in a real estate transaction are trust funds. They must be kept separate and physically segregated from the firm's own money, held in a recognized Washington depository, and deposited by the next banking day after receipt.

The trust account rules in chapter 308-124E WAC add the operating discipline:

• Accounts must be designated as trust accounts at federally insured institutions, with an audit trail accounting for every dollar received and disbursed.
• The firm keeps an individual ledger for each client, and the designated broker must prepare a monthly trial balance reconciling the client ledgers, the bank statement, and the check register; all three must agree at all times.
• Tenant deposits held by the firm may not be disbursed before the end of the tenancy without the tenant's written agreement.
• If the management relationship ends, deposits are disbursed to the owner or the successor manager, with notice to tenants consistent with RCW 59.18.270.
• Trust account records are open to inspection by the Department of Licensing, and violations are grounds for discipline against the firm's license.

For the owner, the practical effect is simple: receipts, depository notices, segregated funds, ledgers, and monthly reconciliation all happen as part of the service, and the deposit handling never depends on your memory or your personal banking habits.

Frequently Asked Questions

Can I keep the deposit in my regular savings account?

No. RCW 59.18.270 requires security deposits to be held in a trust account maintained for that purpose at a Washington financial institution or licensed escrow agent. A personal savings or checking account does not satisfy the statute, even if you never spend the money, and it leaves you without the receipt and depository notice trail the law expects.

Who gets the interest on the trust account?

The landlord does, unless the lease or another written agreement says otherwise. That is the statutory default under RCW 59.18.270. If you want a different arrangement, for example crediting interest to the tenant, put it in writing.

What happens to deposits when I sell the property?

The deposits transfer with the property. The funds must move simultaneously to an equivalent trust account held by the buyer, and the buyer must promptly notify each tenant of the transfer and of the new depository's name, address, and location. Document the per-tenant amounts at closing so both sides can prove the handoff.

This article is general information about Washington law, not legal advice. For questions about a specific deposit dispute or transaction, consult a landlord-tenant attorney.

How Sagareus Handles Security Deposits

Hold the deposit in a trust account, document everything, and refund inside Washington's deadline every single time. A deposit is the resident's money until you can prove otherwise, so we treat it that way from day one. It is held separately from operating funds, exactly as Washington law requires.

When a resident moves out, every deduction has to earn its place. Here is the standard we hold ourselves to:

• Charge for damage, never for ordinary wear. Deterioration from normal living is your cost of doing business under Washington law; damage from negligence or abuse is the resident's.
• Back every deduction with proof. The move-in baseline, the move-out condition, and a real vendor invoice, or it does not go on the statement.
• Send the itemized statement and refund inside the legal deadline. We build in our own buffer so it is never close.

You get paid for true damage. The resident gets a fair, documented accounting. Nobody ends up in small claims.

Trust accounting and monthly owner statements are part of our full service property management in Washington, and deposit handling is one piece of the broader bookkeeping system we cover in our rental property accounting guide for owners.