King County, Washington Court Filing
Fee Lookup

King County, Washington — home to approximately 2,269,675 residents and the most populous jurisdiction in Washington — handles court filings through the King County Superior Court in Seattle. Washington's court structure (Superior Court (civil/family/probate) / District Court (small claims)) determines which courthouse accepts which case types and what fees apply.

For residents of King County, the filing fee amounts depend on both the state's statutory schedule and any local surcharges added by the county.

King County is the economic engine of the Pacific Northwest, anchored by Seattle's tech giants Microsoft, Amazon, and Boeing, with a stunning natural setting between Puget Sound and the Cascade Range. These local economic characteristics shape the types of legal proceedings filed in King County — from probate of estates that include commercial property or business interests near Seattle to civil disputes arising from the county's primary industries.

The King County Superior Court handles the full range of case types for this community, with filing fees applying uniformly based on case type regardless of the underlying subject matter.

King County is known for landmarks including Space Needle, Pike Place Market, Museum of Pop Culture. For residents and businesses in the areas surrounding these community anchors, knowing the applicable filing fees and court procedures in advance helps legal matters proceed efficiently at the King County Superior Court in Seattle.

• Filing fees in King County are based on Washington's statutory schedule, which applies statewide, plus any local surcharges assessed by the county. For reference, the statewide base fees by case type are: probate and estate filings — $200–$260 (Superior Court — Probate)
• civil complaints and appearances — $200–$260 (Superior Court) / $50–$100 (District Court)
• family law matters (divorce, custody, support) — $200–$260 (Superior Court — Family Law)
• small claims filings — $35–$100 (District Court / Municipal Court small claims). These figures represent the state-level base
• the total amount due at the King County Superior Court in Seattle may include additional local charges.

As one of Washington's larger jurisdictions, King County may assess higher local surcharges than the state's rural counties, reflecting the greater administrative cost of operating a high-volume court in Seattle.

• Beyond the initial filing fee, King County litigants and estate administrators should budget for recurring court costs throughout the proceeding: fees for filing subsequent motions and responses, charges for certified copies of letters testamentary or court orders (typically $5 to $25 per document in Washington), jury demand deposits in civil cases, and in probate matters, fees associated with filing the inventory, accountings, and petition for discharge.
• For a complete picture of expected court costs in King County, request the full fee schedule from the King County Superior Court clerk in Seattle before initiating the proceeding.

Washington has been expanding electronic filing (e-filing) capabilities across its court system. King County is among the jurisdictions where e-filing is more established.

For this major county, the King County Superior Court in Seattle likely participates in the state's e-filing system, and represented parties in civil and family matters may be required to file electronically. Contact the King County Superior Court clerk directly to confirm the current e-filing requirements for your specific case type.

When e-filing is available in King County, the system charges a convenience fee per transaction — typically $2 to $8 — in addition to the applicable statutory court fees. This convenience fee is charged by the e-filing service provider rather than the court itself and is generally non-waivable even for litigants who have received a court fee waiver.

Self-represented litigants (pro se filers) are often exempt from mandatory e-filing requirements and may file in paper at the King County Superior Court clerk's window in Seattle during regular business hours.

For probate and estate matters in King County, e-filing availability may differ from civil cases. Some Washington probate courts have been slower to adopt e-filing given the document-intensive nature of estate proceedings — original wills, certified death certificates, and original deeds often require in-person or mail submission regardless of whether other case types accept electronic filing.

Verify with the King County Superior Court in Seattle which documents can be e-filed and which require physical originals before planning your filing strategy.

• King County residents who cannot afford court filing fees may apply for a fee waiver under RCW § 2.04.190 / GR 34.
• To apply, file a declaration of financial condition with the King County Superior Court clerk's office in Seattle at the time of your initial filing.
• The declaration lists all household income sources, monthly expenses, assets, and liabilities.
• A judge or court commissioner reviews the application and issues an order granting or denying the waiver, typically within a few days of submission.

• Eligibility for a fee waiver in King County generally requires that household income fall at or below 125% to 200% of the federal poverty level, or that the applicant is receiving qualifying public benefits — commonly Medicaid, SNAP, SSI, or public housing assistance.
• The specific income thresholds and qualifying programs are defined in RCW § 2.04.190 / GR 34 and may have been updated by recent legislation.
• Ask the King County Superior Court clerk in Seattle for the current income guidelines before completing your declaration.

• A granted fee waiver covers filing fees charged by the King County Superior Court — including initial filing fees and subsequent filings in the same case — but does not cover costs owed to third parties.
• In King County probate proceedings, a fee waiver does not eliminate the cost of publishing a notice to creditors in a newspaper of general circulation (a statutory requirement in most states), service of process fees paid to process servers or the sheriff's office, or costs for court-ordered appraisals.
• Budget for these additional costs separately even when a fee waiver is in effect.