RCW 26.09.090 Washington does NOT use a mathematical formula for spousal maintenance (alimony). Unlike child support, which follows a strict schedule, maintenance is decided case-by-case based on what is "just and equitable" [citation:3][citation:10].
not automatic Maintenance is not guaranteed. The requesting spouse must demonstrate need based on the statutory factors, and the court balances both spouses' situations [citation:3][citation:5].
no hard caps Washington has no statutory durational caps like Florida or Texas. Instead, courts apply flexible guidelines heavily influenced by marriage length [citation:6][citation:9].
💡 These are observed patterns, not statutes. King County (Seattle) judges have broad discretion.
needs + ability The amount is based on the recipient's reasonable needs and the payor's ability to pay, while also considering the standard of living during marriage [citation:2][citation:3].
Courts examine:
Recipient's monthly expenses (housing, healthcare, basic living)
Recipient's own income from employment, investments, or property awarded
Payor's net income after taxes, child support, reasonable living expenses
Earning capacity – not just current income, but potential if underemployed [citation:6]
Judges often calculate the "shortfall" between recipient's needs and their own resources, then consider whether payor can cover that shortfall without undue hardship.
Unlike Texas or Florida, there is no fixed percentage of income or income gap.
Scenario: 14‑year marriage, $12k gross / $3k gross, 2 kids (King County)
Step 1 – Needs assessment: Recipient's reasonable monthly needs = $5,000 (Seattle area housing, healthcare, etc.)
Step 2 – Recipient's own income: Earns $2,000 net from part‑time work + $500 investment income = $2,500
Step 3 – Shortfall: $5,000 – $2,500 = $2,500 unmet need
Step 4 – Payor's ability: Payer net income ~$8,500. After $1,500 child support, remaining $7,000. Can contribute $2,500 without hardship.
Step 5 – Duration (14‑yr marriage): Mid‑length to long. Court may award 7‑10 years (50‑70% of marriage) or even longer if recipient needs time to increase earning capacity.
💡 Cross‑state: TX would cap at 20% gross (~$2,400) with max 5 yrs; FL 35% net gap (~$2,100) with 8.4 yrs; PA temporary formula ~$1,180; WA result here ~$2,500 with flexible duration.
RCW 26.09.170 Maintenance orders can be modified upon "substantial change in circumstances" that was not contemplated at the time of the original order [citation:8].
does not qualify Voluntary underemployment, temporary setbacks, expected fluctuations [citation:8].
Process: File petition, provide evidence, court may modify retroactive to filing date.
Maintenance automatically ends upon:
Death of either spouse
Remarriage of the recipient spouse [citation:8]
cohabitation Does NOT automatically terminate, but can be grounds for modification if it reduces the recipient's financial need. The paying spouse must prove the new relationship has improved the recipient's economic circumstances [citation:8].
✅ No formula – pure discretion
✅ Factors: RCW 26.09.090
✅ Duration: flexible guidelines based on marriage length
✅ No fixed caps on amount
✅ Modification: substantial change
🔵 35% net gap guideline
🔵 Duration caps: 50/60/75%
🔵 No permanent alimony
🔴 20% gross / $5,000 cap
🔴 5/7/10 yr hard caps
🔴 10yr/DV/disability only
⚪ 33%/40% temporary formula
⚪ 17 factors post-divorce
⚪ Adultery bars spousal support
residency To file for divorce in Washington, at least one spouse must be a resident of the state or stationed as a member of the armed services in Washington [RCW 26.09.030]. There is no minimum duration of residency required – you can file immediately upon moving [citation: case law interpretation].
County residency: Venue is proper in the county where either spouse resides.
If moving from another state: The state where the first petition is served generally retains jurisdiction (UIFSA applies). Moving after service won't automatically override existing orders. Consult a Seattle or Bellevue family lawyer before relocating.
Asset protection in WA: Washington is a community property state – assets acquired during marriage are presumed community and divided equitably (not necessarily 50/50). Separate property (pre‑marital, inheritance) is excluded if traceable.
🔎 If you're moving to Washington (King, Snohomish, Pierce counties), consult local counsel before filing elsewhere.
There is no formula. Courts apply the factors in RCW 26.09.090, focusing on need, ability to pay, marriage length, standard of living, and contributions [citation:2][citation:10].
No statutory caps. Guidelines: short marriages (<5 yrs="">
Yes, upon substantial change in circumstances not contemplated at time of order (job loss, disability, retirement, cohabitation, income changes) [citation:8].
Washington is a no‑fault state. Marital misconduct (including adultery) is not considered in maintenance decisions [citation:6].
For divorces after 2018, maintenance is not deductible by payor and not taxable to recipient under federal TCJA; WA conforms.
Not automatically. It can be grounds for modification if it reduces the recipient's financial need. The paying spouse must prove economic benefit from cohabitation [citation:8].
Washington spousal maintenance information compiled from RCW 26.09, 2026 Washington family law guidelines, King County Family Court local practices, and Snohomish County family division procedures. Figures are illustrative. Always consult a Washington family law attorney for your specific situation.
📌 Post‑2018 tax rule: maintenance not deductible/payable taxable; WA conforms to federal TCJA.