Is Rental Income Taxable in Washington State?

Rental income in Washington State is taxable, but not in the way most people expect. Washington has no state income tax, so you will not file a state return on your rental profit. Instead, the state taxes rental activity as a business through its Business and Occupation (B&O) tax on gross receipts, with a broad exemption for residential leases of 30 days or longer. Short-term rentals, ancillary charges, and local taxes remain in play, and the IRS still taxes your net rental income federally regardless of what Washington charges.

No State Income Tax, But Rentals Are a Business

Washington does not impose an individual or corporate income tax.¹ You will not file a state return reporting your net rental profit. The state instead funds itself largely through consumption taxes and a gross receipts tax on business activity, and it treats operating a rental property as a business.

That structural difference matters. A net income tax would let you subtract mortgage interest, repairs, and property taxes before calculating what you owe. Washington’s B&O tax does not work that way. It applies to gross receipts, meaning total revenue before any deductions. So even a rental that barely breaks even after expenses can produce B&O-taxable revenue, unless an exemption applies. For landlords moving from an income-tax state, this is the biggest conceptual adjustment.

Washington does levy a capital gains tax reaching 9.9% on gains above $1 million, but real estate sales are specifically exempt from it, and so are sales of interests in privately held entities where the gain traces to real estate the entity owns.² That tax reaches stocks, bonds, and similar assets, not your rental property.

The Long-Term Residential Lease Exemption

If you rent residential property under a lease that permits continuous occupancy for 30 consecutive days or longer, the rent itself is exempt from both B&O tax and retail sales tax.³ For most residential landlords, this covers the core revenue stream. Your monthly rent checks are not subject to B&O tax.

You still have to report the income. You claim the exemption as a deduction on your Combined Excise Tax Return, which produces no tax on that revenue but keeps the paperwork current.

The exemption is narrow in one important way: it covers rent, not every dollar that flows through the rental. Revenue the Department of Revenue characterizes as a license to use property, rather than a lease, sits on the taxable side of the line.

Ancillary Charges That Stay Taxable

Even under a qualifying long-term lease, certain amounts you collect are subject to B&O tax under the Service and Other Activities classification at 1.5% of gross receipts.⁴ These include:

Late fees charged for overdue rent.
Non-refundable deposits and pet fees you keep regardless of the tenant’s behavior.
Coin-operated laundry income, treated as a license to use real property rather than a rental.³

For a landlord collecting standard rent plus an occasional late fee, the taxable ancillary income is small. Furnished units, significant non-refundable fees, or on-site paid amenities add up quickly and need to be tracked separately from exempt rent.

Short-Term Rentals Are Taxed Differently

Rentals of fewer than 30 consecutive days do not qualify for the residential exemption. The Department of Revenue treats short-term lodging the same way it treats hotels and motels. The income falls under the Retailing B&O classification at 0.471% of gross receipts, and you also have to collect and remit retail sales tax from your guests.⁴

Washington’s state retail sales tax rate is 6.5%, and local rates push the combined average above 9%. On top of sales tax, many jurisdictions impose additional lodging-specific taxes, including convention center taxes and special hotel/motel taxes that can reach short-term rental operators.⁵ The exact combination depends on where the property sits. The Department of Revenue publishes an address-based rate lookup tool.

Registering With the State

Anyone doing business in Washington, including operating a rental, must register with the Department of Revenue if gross income reaches $12,000 per year, if they need to collect sales tax, or if they owe any tax or fee to the department.⁶ Registration is required even when all of your rental income qualifies for the long-term lease exemption.

You register by filing a Business License Application through the department’s online system. Once processed, you receive a nine-digit Unified Business Identifier (UBI) number that serves as your identifier across multiple state agencies.⁶ You will use it whenever you file a return or update your business information.

Out-of-state ownership does not excuse you. If you own rental property in Washington, you have physical presence nexus and must register, report B&O tax, and collect any applicable sales tax.⁷ Even without physical property, a business must register once it has more than $100,000 in combined gross receipts sourced to Washington.

Filing the Combined Excise Tax Return

Once you have a UBI number, you report income and pay any B&O tax due on the Combined Excise Tax Return, filed electronically through the department’s My DOR portal. Long-term rental income gets reported and then deducted, producing no tax; ancillary and short-term income gets reported under the classification that matches it.

Filing Frequency

The department assigns your filing frequency based on estimated annual tax liability:⁸

Annual filers owe $1,050 or less per year, with returns due April 15.⁹
Quarterly filers owe between $1,051 and $4,800, with returns due the last day of the month after quarter’s close (April 30, July 31, October 31, January 31).
Monthly filers owe more than $4,800, with returns due the 25th of the following month.

If your gross receipts stay below $125,000 per year and you don’t collect sales tax or owe other fees, you may qualify for active non-reporting status, which suspends your filing obligation until you cross the threshold.¹⁰ Notifying the department when your income crosses that line is your responsibility.

The Small Business B&O Credit

The small business credit is the reason many smaller landlords owe little or no B&O tax on their taxable ancillary income. It applies automatically when you file electronically and is based on your total B&O liability after other credits. For annual filers whose Service and Other Activities income makes up 50% or more of taxable revenue, the credit applies when total B&O liability is below $3,840. For annual filers with less than 50% in that classification, the threshold drops to $1,320.¹¹ When your total tax falls below the applicable threshold, the credit can zero out the liability.

Records to Keep

Washington requires complete and accurate financial records for five years.¹² For a landlord, that means lease agreements, bank statements showing rent deposits, receipts for any ancillary charges, and documentation of deductions claimed on the Combined Excise Tax Return.

Federal Income Tax Still Applies

Washington’s silence on income tax does not carry over to the IRS. Federal tax treats your net rental income, meaning what remains after allowable deductions, as reportable income every year.

Schedule E

You report rental income and expenses on Schedule E (Supplemental Income and Loss), which attaches to Form 1040.¹³ All rent received goes on this form, along with deductible expenses: mortgage interest, property taxes, insurance, repairs, property management fees, and depreciation. The net profit or loss flows through to your overall return.

Unlike the state B&O tax, the federal system taxes profit, not gross receipts. That distinction makes expense tracking valuable. Every deductible dollar reduces what you owe.

Depreciation

The IRS allows you to depreciate the cost of a residential rental building, though not the land, over 27.5 years on a straight-line schedule. The annual depreciation deduction reduces your taxable rental income even though no cash left your pocket that year. Depreciation is reported on Form 4562 and carries to Schedule E. Shorter-lived components such as appliances, carpeting, fencing, and landscaping can be depreciated on faster schedules of 5 or 15 years.

Qualified Business Income Deduction

The Section 199A qualified business income (QBI) deduction lets eligible landlords deduct up to 20% of their net rental income from a domestic business operated as a sole proprietorship, partnership, S corporation, or through a trust.¹⁴ The deduction was originally set to expire after December 31, 2025, but the One Big Beautiful Bill Act extended it. A safe harbor is available for rental real estate enterprises that meet certain record-keeping and hour requirements, and rentals that don’t fit the safe harbor may still qualify if they rise to the level of a trade or business.

Property Tax and Local Business Taxes

County assessors value all real property at 100% of fair market value, and rental properties are no exception.¹⁵ Rentals do not qualify for Washington’s homestead exemptions or senior citizen deferrals unless you live in one unit of a multi-unit property. Property tax is deductible on your federal return as a rental expense.

State B&O is only one layer. Many Washington cities impose their own local B&O taxes on gross receipts, typically in the 0.1% to 0.2% range, and these apply even when the state small business credit eliminates your state-level liability. Some cities also require rental-specific registration. Seattle’s Rental Registration and Inspection Ordinance (RRIO) charges a registration fee per property plus an additional amount per unit, with registration valid for two years. Other cities run similar programs. Check the jurisdiction where the property sits, because failing to register where required can result in fines and the inability to pursue evictions.

Penalties for Skipping the Filings

Ignoring these obligations compounds on both sides.

On the state side, if you file a Combined Excise Tax Return but pay late, the department assesses a 9% late penalty on the tax owed. That penalty rises to 19% after the end of the following month and 29% after the second month.¹⁶ The minimum penalty is $5, and interest accrues on top. If you qualified for active non-reporting but crossed the $125,000 threshold without notifying the department, you owe back taxes and penalties from the point you should have started filing.

On the federal side, failing to report rental income can trigger accuracy-related penalties of 20% of the underpayment when the understatement is substantial.¹⁷ The standard late-filing penalty is 5% of unpaid tax per month up to 25%, and the late-payment penalty adds 0.5% per month. Landlords who have never reported rental income sometimes discover that the IRS already has years of 1099 data from property management companies or payment platforms, at which point penalties and back taxes can exceed the original liability.

The practical takeaway: register with the Department of Revenue, file your Combined Excise Tax Returns on time even when the amount due is zero, and report your net rental income to the IRS on Schedule E each year. The state filing is largely mechanical once you know which income is exempt and which is taxable. The federal return is where depreciation, the QBI deduction, and other planning tools actually reduce what you owe on income Washington itself leaves alone.

1
Washington Department of Revenue. Income Tax
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Washington Department of Revenue. Capital Gains Tax
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Washington Department of Revenue. Rental vs. License to Use Real Estate
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Washington Department of Revenue. Business and Occupation (B&O) Tax
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Washington Department of Revenue. Lodging Taxes
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Washington Department of Revenue. Apply for a Business License
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Washington Department of Revenue. Out of State Businesses Reporting Thresholds and Nexus
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Washington Department of Revenue. Filing Frequencies and Due Dates
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Washington Department of Revenue. Filing Due Dates
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Washington Department of Revenue. Active Non-Reporting
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Washington Department of Revenue. Credits
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Washington State Department of Revenue. Record Keeping Requirements
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Internal Revenue Service. About Schedule E (Form 1040), Supplemental Income and Loss
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Internal Revenue Service. Qualified Business Income Deduction
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Washington Department of Revenue. Property Tax
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Washington Department of Revenue. Penalty Waivers
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Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments