Washington Remote Employee Tax Withholding: No Income Tax, but What About L&I?

Washington is one of nine U.S. states with no individual state income tax, but it compensates with one of the most complex payroll tax systems in the country. Washington employers face Labor & Industries (L&I) workers' compensation premiums, Paid Family & Medical Leave (PFML) premiums split between employer and employee, the Washington Cares Fund long-term care tax paid entirely by employees, and the Business & Occupation (B&O) gross receipts tax on the business itself. A Washington remote employee triggers multiple registrations, and missing any of them can produce significant back-tax exposure. This guide walks through the Washington tax landscape, what no income tax means for remote employees, L&I, PFML, the WA Cares Fund, the B&O tax, out-of-state employer obligations, the convenience rule trap, Washington-specific wage laws, recent developments, and common payroll mistakes.

Washington's Tax Landscape

Washington levies no personal income tax and no individual wage tax on earned income, a structure protected by Washington's constitutional and political environment. Washington funds itself primarily through sales tax (6.5% state rate plus local rates bringing combined totals above 10% in some areas), the Business & Occupation (B&O) tax on gross receipts, property taxes administered at the county level, and a 7% capital gains tax on long-term capital gains over $270,000 (enacted in 2021 under ESSB 5096 and upheld by the Washington Supreme Court in Quint v. Washington in 2023). The capital gains tax applies to individuals, not businesses, and is not a payroll tax.

What "No Income Tax" Means for Remote Employees

For Washington resident employees, the absence of a state income tax means there is no Washington income tax withholding from paychecks, no Washington resident income tax return to file for wage income, and no Washington estimated tax payments required for wages. A Washington resident who earns $100,000 working for a Washington employer pays zero Washington state income tax on those wages, although federal income tax, Social Security, and Medicare still apply. Washington residents also avoid the complexity of state-level W-4 forms; employees complete only the federal Form W-4, and employers do not maintain a state withholding account for income tax purposes.

Washington Labor & Industries (L&I)

Washington Labor & Industries (L&I) is the state's workers' compensation program, administered by the Washington Department of Labor and Industries under Title 51 RCW. L&I premiums are based on the risk classification of the work performed, with rates varying widely by industry — from under 1% of wages for low-risk office work to over 10% for high-risk construction, logging, and other hazardous industries. The premium is shared between the employer and the employee, with the employee typically paying approximately 25% to 50% of the premium through payroll deduction and the employer paying the remainder. The exact split depends on the risk classification.

Washington Paid Family & Medical Leave (PFML)

The Washington Paid Family & Medical Leave (PFML) program provides paid leave for medical, family care, and military-related events, administered by the Washington Employment Security Department under Title 50A RCW. PFML is funded by a premium of 0.92% of wages for 2025, with the employee paying 71.43% (0.6571% of wages) and the employer paying the remaining 28.57% (0.2629% of wages) on wages up to the wage cap of $168,300 for 2025. Employers with fewer than 50 employees are exempt from the employer portion but must still withhold and remit the employee portion. The wage cap is adjusted annually based on increases in the Washington average weekly wage.

Washington Cares Fund (Long-Term Care Tax)

The Washington Cares Fund is a state-run long-term care insurance program funded by a 0.58% payroll tax on wages, enacted under ESSB 1323 in 2019 and effective January 1, 2023 (after a one-year delay). The tax is paid entirely by the employee with no employer contribution, and there is no wage cap — the tax applies to all wages, unlike PFML and most other Washington payroll taxes. Workers who had private long-term care insurance before November 1, 2021, were eligible to apply for an opt-out exemption, and the opt-out window closed on December 31, 2022, for most workers. Exempt workers retain their exemption as long as they maintain qualifying private coverage.

Washington Business & Occupation (B&O) Tax

The Washington Business & Occupation (B&O) tax is a gross receipts tax on businesses, administered by the Washington Department of Revenue under Chapter 82.04 RCW. The tax applies to gross income without deduction for expenses, with rates varying by classification: 0.471% for services and most other classifications, 0.484% for retailing (with an additional 0.484% retail sales tax on the same transactions), 1.5% for financial institutions, and other rates for specific industries including manufacturing, wholesaling, and public utilities. The B&O tax is not a payroll tax and is not withheld from employee wages, but a Washington remote employee creates B&O tax nexus for an out-of-state employer, which may need to register and file B&O tax returns.

Out-of-State Employer With a Washington Remote Employee

An out-of-state employer that hires a Washington remote employee creates Washington payroll tax nexus and must register with multiple Washington agencies: the Washington Department of Revenue for a B&O tax account, the Washington Department of Labor and Industries for an L&I account, the Washington Employment Security Department for a PFML and SUI account, and the Washington Employment Security Department for WA Cares Fund premium collection. The four registrations are separate and produce separate account numbers, which is unique among no-income-tax states and significantly increases the administrative burden compared to states like Texas and Florida. The registrations are completed through the separate agency portals and typically take five to ten business days each to process.

Washington Resident Working for an Out-of-State Employer

A Washington resident who works remotely for an out-of-state employer is still a Washington resident for tax purposes, and Washington does not tax the resident's wages. However, the work state may impose income tax on the Washington resident if the work state's sourcing rules treat the wages as work-state source income. For a Washington resident who works entirely from Washington for a California employer, California does not tax the wages because California sources wages to the state where the work is physically performed, and the work is performed entirely in Washington. The employer in this scenario has no California withholding obligation and the Washington resident has no California filing obligation.

The Washington Convenience Rule Trap

The convenience rule trap is most acute for Washington residents working for New York, Connecticut, Delaware, Pennsylvania, Arkansas, Nebraska, or Oregon employers. Under the convenience-of-the-employer rule, those states source wages to the employer's state even for days worked remotely outside the state, unless the remote work is done out of necessity for the employer. New York's rule under Tax Law Section 601 and 20 NYCRR 132.16 is the most aggressively enforced: a Washington resident working entirely from Washington for a New York employer, who chose to relocate to Washington for personal reasons, is treated as working for convenience and is subject to New York non-resident income tax on all wages.

Washington-Specific Wage Laws

Washington's state minimum wage is $16.66 per hour for 2025, one of the highest state minimum wages in the country, set by the Washington Department of Labor and Industries based on annual adjustments tied to the Consumer Price Index. The state minimum wage applies statewide, with certain cities including Seattle, SeaTac, and Tukwila imposing higher local minimum wages. Seattle's minimum wage is $20.76 per hour for 2025 for large employers and employers that do not pay toward medical benefits. Washington employers must comply with the highest applicable minimum wage based on the employee's work location.

Recent Washington Tax Developments

The Washington PFML premium rate increased to 0.92% for 2025, up from 0.92% for 2024 (the rate has been relatively stable in recent years but is reviewed annually by the ESD). The PFML wage cap increased to $168,300 for 2025, up from $168,300 for 2024 (the cap is adjusted annually based on the Washington average weekly wage). The WA Cares tax rate remains 0.58% of wages with no wage cap for 2025, and the program has continued to mature with the first eligible workers becoming eligible for benefits starting in 2026 after the three-year vesting period. The Washington Health Care Authority has issued guidance on benefit eligibility and the documentation required for claims.

The Washington state minimum wage increased to $16.66 per hour for 2025, up from $16.28 per hour for 2024, reflecting the annual CPI adjustment. The Washington Supreme Court's 2023 decision in Quint v. Washington upheld the 7% capital gains tax against constitutional challenge, and the tax remains in effect for 2025 with the $270,000 threshold adjusted annually for inflation. The B&O tax rates remain stable for 2025, with the small business credit threshold at approximately $125,000 in gross income. Out-of-state employers with Washington remote employees should monitor the annual PFML and WA Cares rate adjustments and update payroll systems to ensure compliance with the four separate Washington payroll registrations.

Common Washington Payroll Mistakes

The most common Washington payroll mistake is assuming that "no income tax" means "no Washington payroll registration." Employers who hire Washington remote employees must still register with the Washington Department of Revenue for B&O tax, the Washington Department of Labor and Industries for L&I, the Washington Employment Security Department for PFML and SUI, and the Washington Employment Security Department for WA Cares Fund premium collection. The second common mistake is missing the WA Cares tax — the 0.58% employee-paid tax with no wage cap is easy to overlook, particularly for out-of-state employers unfamiliar with Washington's unique payroll tax structure.

The third common mistake is mishandling the L&I risk classification. L&I premiums vary widely by industry, and applying the wrong risk classification produces under- or over-payment of premiums that surfaces only at audit. The fourth common mistake is missing the small-employer exemption for the employer portion of PFML — employers with fewer than 50 employees are exempt from the employer portion but must still withhold and remit the employee portion, and missing the exemption means overpaying the employer portion.

The fifth common mistake is failing to apply the Seattle minimum wage for Seattle-based remote employees. The Seattle minimum wage ($20.76 per hour for 2025) is significantly higher than the Washington state minimum wage ($16.66 per hour for 2025), and missing the Seattle rate produces under-payment of wages. The sixth common mistake is failing to file quarterly reports with all four Washington agencies — L&I, ESD, WA DOR, and the HCA via ESD. The seventh common mistake is mishandling the B&O tax small business credit, which can offset B&O tax liability for businesses with gross income below the threshold but requires annual calculation. The eighth common mistake is treating Washington resident employees working for out-of-state employers as not subject to work-state income tax, when the work state enforces a convenience rule.

What to Do Next

Audit your Washington payroll compliance using the eight common mistakes above. Verify that your Washington Department of Revenue B&O tax account, Washington Department of Labor and Industries L&I account, Washington Employment Security Department PFML and SUI account, and WA Cares Fund collection are all active. Confirm that L&I premiums are correctly classified by risk, PFML contributions are correctly split between employer and employee (with the small-employer exemption applied if applicable), WA Cares tax is being withheld from the employee's wages with no wage cap, and SUI contributions stop at the $68,500 wage base. Update your payroll system for the 2025 state minimum wage of $16.66 per hour and the Seattle minimum wage of $20.76 per hour if applicable. If you have a Washington resident working for an out-of-state employer in a convenience-rule state, model the work-state tax liability. Run our multi-state withholding calculator for each Washington employee to verify the full federal and state payroll picture.