Small business health insurance requirements in Washington start with a simple answer: the state does not require you to offer coverage, and federal law only requires it once you reach 50 full-time equivalent employees. Below that line, offering a health plan is a voluntary choice. Make that choice, though, and a layered set of state and federal rules governs who you must cover, what the plan must include, how it can be priced, and what you owe your employees when they leave.
When Federal Law Forces You to Offer Coverage
The dividing line is 50 full-time equivalent employees. Under 26 U.S.C. § 4980H, any business that averaged at least 50 full-time equivalents on business days during the prior calendar year is an Applicable Large Employer subject to the employer shared responsibility provision.1Office of the Law Revision Counsel. 26 U.S. Code 4980H – Shared Responsibility for Employers Regarding Health Coverage Part-time hours count toward the total, so 30 full-time workers plus enough part-timers to add 20 more full-time equivalents puts you over.
Employers above that line who don’t offer coverage to at least 95% of their full-time workforce face a penalty of roughly $3,340 per full-time employee for the 2026 tax year under Section 4980H(a). A second penalty under Section 4980H(b), around $5,010 per affected employee in 2026, applies when the coverage offered is unaffordable or fails to meet minimum value standards.1Office of the Law Revision Counsel. 26 U.S. Code 4980H – Shared Responsibility for Employers Regarding Health Coverage
If your Washington business has fewer than 50 full-time equivalents, none of this applies. You can skip group coverage entirely with no federal penalty. If you choose to offer it, the rest of the rules below are what you’re signing up for.
Who Qualifies as a Small Employer in Washington
Washington defines a small employer as a business that employed an average of at least one but no more than 50 employees during the previous calendar year, with a bona fide employer-employee relationship in place.2Washington State Legislature. RCW 48.43.005 – Definitions Self-employed people and sole proprietors can qualify, but they must draw at least 75% of their income from the business and have filed the appropriate Schedule C or F. Affiliated companies that can file a combined state tax return count as one employer for headcount purposes.
Falling inside this definition is what gives you access to Washington’s small group market and its protections.
What a Small Group Plan Must Include
Guaranteed Issue
Every carrier operating in Washington’s small group market must accept any small employer that applies. A carrier cannot turn your business away because an employee has cancer, diabetes, or any other pre-existing condition. Federal law backs this up under 42 U.S.C. § 300gg-1, which requires insurers to accept every employer that applies for coverage in the group market.3GovInfo. 42 USC 300gg-1 – Guaranteed Availability of Coverage Washington codifies its own version under RCW 48.43.035.
Essential Health Benefits
Every small group plan sold in Washington must cover the ten essential health benefit categories required by the ACA: emergency care, hospitalization, maternity and newborn care, mental health and substance use treatment, prescription drugs, lab services, rehabilitative services, preventive care, and pediatric services including dental and vision.4Centers for Medicare & Medicaid Services. Information on Essential Health Benefits (EHB) Benchmark Plans Washington’s benchmark plan sets the specific scope within those categories, and the Office of the Insurance Commissioner reviews every policy form and premium rate before a plan can be sold.5Office of the Insurance Commissioner. Essential Health Benefits Benchmark Plan
How Premiums Can Be Priced
Carriers in the small group market cannot set premiums based on an employee’s health status, claims history, gender, or industry. The only permitted rating factors are age, family size, geographic area, and tobacco use. Once a carrier participates in the small group market, these rules apply to every eligible employer it accepts.
Participation and Contribution Rules You’ll Actually Hit
Even without a state mandate, carriers set their own contractual rules for the groups they accept, mainly to prevent adverse selection where only the sickest employees enroll.
Most carriers require at least 75% of eligible employees to enroll. Employees who already have qualifying coverage through a spouse, parent, Medicare, or Medicaid are usually excluded from the participation count. On the money side, carriers generally require the employer to pay at least 50% of the employee-only monthly premium.6Kaiser Permanente. Rating and Underwriting Assumptions Policy Effective January 1, 2025 Some carriers set it higher. You can always pay more or extend your contribution to dependents, but 50% of employee-only premiums is the standard floor across the Washington market.7Washington Health Benefit Exchange. Small Business FAQ
Miss either threshold and the carrier can refuse to issue or renew your policy. There’s one annual window of relief: from November 15 through December 15, carriers accept new small groups that fall below the participation or contribution minimums.6Kaiser Permanente. Rating and Underwriting Assumptions Policy Effective January 1, 2025 Outside that window, the standard thresholds apply.
Alternatives If You Don’t Want to Run a Group Plan
Two federally authorized arrangements let you reimburse employees for individual market coverage instead of sponsoring a group plan.
Qualified Small Employer HRA (QSEHRA)
A QSEHRA is available only to employers that are not Applicable Large Employers and that do not offer any group health plan. The employer funds it entirely; employees cannot contribute through salary reductions.8Office of the Law Revision Counsel. 26 U.S. Code 9831 – General Exceptions Employees buy their own individual coverage, submit proof, and get reimbursed for premiums and qualifying medical expenses up to an annual cap. For 2026, the IRS set those caps at $6,450 for self-only coverage and $13,100 for family coverage. Reimbursements are tax-free to employees who maintain minimum essential coverage.
You skip the carrier participation and contribution rules, but you have no say in which plan each employee picks, and employees in different parts of the state may end up on very different networks.
Individual Coverage HRA (ICHRA)
An ICHRA works the same way but is open to employers of any size, including those with 50 or more employees. You set a monthly reimbursement allowance, employees buy individual coverage, and the reimbursements flow tax-free. There’s no IRS-set annual dollar cap.
Employers subject to the ACA mandate must make the ICHRA offer “affordable.” In 2026 that’s 9.96% of household income, meaning the employee’s remaining premium after your allowance cannot exceed that share. Under the federal poverty level safe harbor, the employee’s out-of-pocket cost must stay at or below $129.90 per month. You cannot offer an ICHRA and a traditional group plan to the same class of employees, so most employers use classes like salaried versus hourly to segment.
Tax Breaks for Offering Coverage
Small Business Health Care Tax Credit
The smallest employers get an extra incentive. If your business has fewer than 25 full-time equivalent employees, pays average annual wages below roughly $65,000, and covers at least 50% of employee-only premiums through a SHOP marketplace plan, you may qualify for the Small Business Health Care Tax Credit.9Internal Revenue Service. Small Business Health Care Tax Credit and the SHOP Marketplace The credit is worth up to 50% of your premium contributions for for-profit employers and up to 35% for tax-exempt organizations.10HealthCare.gov. The Small Business Health Care Tax Credit It phases out as employee count and average wages rise, so the deepest benefit goes to the smallest businesses with the lowest-paid workers.
Section 125 Cafeteria Plan
Even without the credit, a Section 125 plan saves real money. Federal law lets employers set up a written plan under which employees pay their share of premiums with pre-tax dollars, excluded from income tax, Social Security tax, and Medicare tax.11Office of the Law Revision Counsel. 26 USC 125 – Cafeteria Plans The employer also avoids its share of payroll taxes on those premium dollars.
The IRS requires a formal written plan document adopted before the start of the plan year, spelling out which benefits are offered, who is eligible, how elections work, and what governs mid-year changes.12Internal Revenue Service. FAQs for Government Entities Regarding Cafeteria Plans Without a compliant document, the IRS can reclassify all premium deductions as taxable wages and assess back taxes and penalties. A basic premium-only plan covering just insurance premiums is cheap to set up and the most common version among small employers.
A Section 125 plan can also include a health flexible spending account, which in 2026 lets employees set aside up to $3,300 pre-tax for out-of-pocket medical costs with up to $660 carrying over. Pair a high-deductible plan with a health savings account and 2026 contribution limits are $4,300 for self-only and $8,550 for family coverage.
Continuation Coverage When Employees Leave
Federal COBRA applies to employers with 20 or more employees on more than half of their typical business days in the prior calendar year.13Office of the Law Revision Counsel. 29 USC 1161 – Plans Must Provide Continuation Coverage to Certain Individuals Under COBRA, departing employees can keep group coverage for up to 18 months (36 months for events like divorce or a dependent aging out), with the employee paying the full premium plus a 2% administrative fee.14U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Employers and Advisers
If your business has fewer than 20 employees, you’re under the federal COBRA threshold, but Washington’s own continuation rules still apply. Employees who become ineligible for a small group plan (1 to 50 employees) can elect to continue coverage temporarily under state law.15Office of the Insurance Commissioner. Continuation Plans If you offer any group plan, be prepared to notify departing employees of their continuation rights regardless of company size.
Setting Up Coverage and Staying Compliant
To get a quote, carriers will want your federal Employer Identification Number, your Washington Unified Business Identifier, an employee census with legal names, dates of birth, zip codes, and intended dependents, a recent quarterly wage and tax report from the Washington Employment Security Department, and your full-time equivalent calculation (total part-time hours for the year divided by 2,080).16Internal Revenue Service. Small Business Health Care Tax Credit Questions and Answers – Determining FTEs and Average Annual Wages Applications go through the Washington Healthplanfinder portal or a licensed broker. Expect roughly 15 to 30 days for the carrier to verify your business and confirm you meet the thresholds, then a first-month binder payment activates the group.
Federal regulations cap the waiting period for new hires at 90 calendar days, so coverage cannot be withheld past that point.17eCFR. 45 CFR 147.116 – Prohibition on Waiting Periods That Exceed 90 Days Once coverage is in place, you owe each enrolled employee a Summary of Benefits and Coverage within 90 days of first becoming covered, plus written notice of any material plan changes. Monthly billing, payroll deductions (pre-tax if you have a Section 125 plan), and annual renewal shopping become the ongoing rhythm. Carriers typically send rate change notices 60 to 90 days before your plan anniversary, and because Washington’s Office of the Insurance Commissioner vets every rate filing in advance, any increase you see has already cleared compliance review.