Security Deposit Accounting: How One Landlord Booked Refunds as Income

Security Deposit Accounting: How One Landlord Booked Refunds as Income

Illustrative anonymized composite, drawn from recurring patterns rather than a single engagement. The firm named below was not involved in it. Every dollar figure is invented and rounded. Nothing here is guaranteed or predictive.

Security deposit accounting trips up landlords because the bank balance rises the day a deposit arrives, and the books can look the same as rent. In this composite, an owner of eight rental units recorded every deposit as income, then recorded the refunds as repair costs, and ended the year with a profit figure that was $4,000 too high.

The owner kept the books in a spreadsheet and checked the bank balance as a sign of how things were going. System Six, a Seattle bookkeeping and fractional CFO firm whose live profile lists Real Estate Investors among its specialties, is the kind of firm an owner in this spot might ask about. System Six is a vetted Sam's List member and a paying member of our featured program; payment does not buy the language we use or its reviews.

How the Landlord Booked Deposits as Rental Income

During the year, four new tenants each paid a $2,000 security deposit, $8,000 in all. The owner recorded each one in the same place as the monthly rent, as rental income. The bank showed the money, the spreadsheet showed a deposit, and it felt like revenue.

Two of those tenants moved out before year-end. One got the full $2,000 back. The other got $1,500 back, and the owner kept $500 to cover carpet cleaning. The owner recorded both refunds as a repairs and maintenance expense, because that was the nearest category that "took money out."

The limitation of this habit is that it feels reasonable at each step. Nothing was hidden. The error is that a deposit you may have to return is not the same thing as rent you have earned.

Security Deposits as a Liability, Not Income

A deposit is generally money held for the tenant, with an obligation to return it, less anything the lease and local law allow you to keep. Until the tenancy ends and you decide what to keep, the owner generally owes it back. That is why bookkeepers record it as a liability, a line on the balance sheet that says the landlord holds this money for someone else.

When the tenant moves out and the full deposit goes back, the liability simply drops and cash drops with it. No income and no expense is involved. If the owner keeps part of the deposit to cover unpaid rent or damage, that retained amount generally becomes income, or offsets the cost of the repair, in the period it is kept.

The limitation: how a deposit is treated for tax can depend on the lease terms and whether it is treated as an advance payment of rent. A last month's rent deposit, for example, is generally treated differently from a refundable security deposit.

Security Deposit Accounting by the Numbers

The table compares what the owner booked with what the books should have shown, using the invented figures above.

Item	What the owner booked	What it should have shown
Four deposits received, $8,000	$8,000 rental income	$8,000 added to the deposit liability
Refund to first tenant, $2,000	$2,000 repairs expense	$2,000 taken out of the liability
Refund to second tenant, $1,500	$1,500 repairs expense	$1,500 taken out of the liability
$500 kept for carpet cleaning	Not recorded	$500 taken out of the liability, recorded as income
Effect on profit	$8,000 income less $3,500 expense, a $4,500 gain	$500 income, a $500 gain
Deposit liability at year-end	None shown	$4,000 held for two tenants

The arithmetic: the owner booked $8,000 of income and $3,500 of expense, so profit rose by $4,500. The correct figure is the $500 kept, so the books overstated profit by $4,000. That is exactly the amount still held for the two tenants who had not moved out, $2,000 each.

The limitation: real files have partial refunds, interest that some states require on deposits and repairs that cost more than the amount kept, so a real calculation is rarely this tidy.

Rental Property Bookkeeping: How the Owner Found the Gap

The owner found the gap after year-end, before the return was filed, while getting ready to apply for a loan on a ninth unit. The lender asked for a profit and loss statement and a balance sheet. The profit looked strong, but the balance sheet showed no deposits held, even though the owner knew from the leases that two tenants had given $2,000 each.

A bookkeeper reviewing the file noticed a second symptom: repairs and maintenance was unusually high compared with the invoices behind it. The refunds were sitting in that category with no invoice, which is the kind of thing a reader of the statements questions.

Whether to make any correction to a filed return is a question for a CPA, who would consider which year the entries belong to and the size of the difference. This composite does not resolve it.

The limitation: a profit that looks good on paper does not change the cash. The owner's bank balance was never wrong. The reports were.

How Security Deposit Accounting Changed for the Owner

The owner set up a separate liability account for deposits and moved the four deposits into it. Each refund was recorded against that account, and the $500 kept for cleaning was recorded as income with a note. The repairs category was cleaned up to match its invoices.

The owner also opened a separate bank account for deposits, which some states require and which makes the liability easy to check: the account balance should equal the liability. Each month the two numbers are compared, in the same way a reconciliation compares a bank to the books.

In this invented case, the corrected profit was lower, the loan conversation was simpler because the statements matched the leases, and the estimated tax payments for the following year were set from the right base. It could have gone differently if, for example, the lender had asked for a longer history.

The limitation: nothing here promises a better loan outcome or a lower tax bill. Correct books make the numbers trustworthy, not favorable.

Where System Six Fits

System Six is a bookkeeping and fractional CFO firm based in Seattle. It was founded in 2009, has about 41 employees and serves clients nationwide. It was not involved in this composite. Its live profile lists Non-Profit Organizations, Professional Service Firms and Real Estate Investors as specialties, and says it serves small businesses generating between $1 million and $10 million of revenue.

System Six does not yet have enough reviews on Sam's List for us to cite a count, so we describe the firm by what its profile says instead.

The limitation, plainly: the profile lists a $1 million revenue minimum, so an owner of eight units may fall outside what System Six takes on. It also does not describe deposit liability tracking by name, so ask what rental property bookkeeping includes.

Frequently Asked Questions

Is a security deposit income to a landlord?

Generally not when it is received, if you are required to return it. It is treated as a liability until you return it or keep part of it. An amount you keep for unpaid rent or damage generally becomes income when kept. Confirm your situation with a tax professional.

How should a landlord record a security deposit?

As a liability, not as income. Record the deposit when it arrives, add it to a deposit liability account, and take it out when you return it or apply it. Keeping the deposits in a separate bank account makes the check easy.

What happens to a deposit when a tenant moves out?

The part you return reduces the liability and your cash. The part you keep for unpaid rent or damage generally becomes income or reduces a repair cost, depending on the facts. State law often sets deadlines and itemization rules, so read yours.

Do I need a separate bank account for security deposits?

It depends on your state. Some states require it and some do not, and some also require interest. Even where it is optional, a separate account makes the liability easy to prove. Check your state's landlord-tenant law.

Before year-end, compare your tenants' lease deposit amounts to the liability on your balance sheet. If the two do not match, start there. You can browse fractional CFOs on Sam's List, including System Six, and ask each one how it handles rental property bookkeeping.

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About the author: Kimberly Green is the cofounder of Sam's List, where business owners and high earners find vetted CPAs, financial advisors, and fractional CFOs. She's met one-on-one with 400+ financial professionals and writes from the real data behind thousands of client-advisor matches. Ask her anything about finding an accountant - she's heard it all, including the questions people are afraid to ask.