Child Support Calculation Worksheet
IMPORTANT: THIS IS A PREPARATION GUIDE — NOT THE OFFICIAL COURT WORKSHEET
Washington requires the use of the official WSCSS Worksheets (Washington State Child Support Schedule Worksheets) for child support calculations.
This template provides the substantive content and calculation methodology to help you
prepare — but you must transfer your figures to the official worksheet before filing.
The official form is available at https://www.courts.wa.gov/forms/?fa=forms.contribute&formID=73.
Do not file this document directly with the court.
CHILD SUPPORT CALCULATION WORKSHEET
State of Washington
Court: [________________________________] Superior Court
County: [________________________________]
Case No.: [________________________________]
Judge/Commissioner: [________________________________]
TABLE OF CONTENTS
- Party and Children Identification
- Calculation Model
- Gross Income Determination
- Adjustments to Income
- Child Support Obligation Formula
- Healthcare Expenses
- Childcare Expenses
- Extraordinary Expenses
- Deviation Factors
- Duration and Termination
- State-Specific Notes
1. PARTY AND CHILDREN IDENTIFICATION
Parent (Petitioner):
- Full Name: [________________________________]
- Employer: [________________________________]
Parent (Respondent):
- Full Name: [________________________________]
- Employer: [________________________________]
Children Subject to This Order:
| Child Name | Date of Birth | Age |
|---|---|---|
| [____________________] | [__/__/____] | [__] |
| [____________________] | [__/__/____] | [__] |
| [____________________] | [__/__/____] | [__] |
Number of Children: [____]
2. CALCULATION MODEL
Model: Income Shares per RCW 26.19
Number of Children: [____]
3. GROSS INCOME DETERMINATION
| Income Source | Petitioner (Monthly) | Respondent (Monthly) |
|---|---|---|
| Wages/Salary | $[________] | $[________] |
| Overtime/Bonuses/Commissions | $[________] | $[________] |
| Self-Employment Income | $[________] | $[________] |
| Social Security/Pensions | $[________] | $[________] |
| Workers' Comp/Unemployment | $[________] | $[________] |
| Interest/Dividends/Capital Gains | $[________] | $[________] |
| Spousal Maintenance Received | $[________] | $[________] |
| Other Income | $[________] | $[________] |
| Total Monthly Gross Income | $[________] | $[________] |
4. ADJUSTMENTS TO INCOME
| Deduction | Petitioner (Monthly) | Respondent (Monthly) |
|---|---|---|
| Federal Income Tax | $[________] | $[________] |
| State Income Tax | $[________] | $[________] |
| FICA (Social Security/Medicare) | $[________] | $[________] |
| Mandatory Retirement/Pension | $[________] | $[________] |
| Voluntary Retirement (up to limit) | $[________] | $[________] |
| Union/Professional Dues | $[________] | $[________] |
| Maintenance Paid | $[________] | $[________] |
| Normal Business Expenses (self-employed) | $[________] | $[________] |
| Total Deductions | $[________] | $[________] |
| Monthly Net Income | $[________] | $[________] |
| Combined Monthly Net Income | $[________] |
5. CHILD SUPPORT OBLIGATION FORMULA
Step 1: Combined Monthly Net Income: $[________]
Step 2: Basic Support Obligation from Economic Table (RCW 26.19.071) for [__] children: $[________]
Step 3: Each Parent's Percentage:
- Petitioner: $[________] / $[________] = [____]%
- Respondent: $[________] / $[________] = [____]%
Step 4: Each Parent's Share:
- Petitioner: $[________] x [____]% = $[________]
- Respondent: $[________] x [____]% = $[________]
Step 5: Standard Calculation (before adjustments): $[________]
6. HEALTHCARE EXPENSES
| Item | Petitioner | Respondent |
|---|---|---|
| Health Insurance Premium (children's portion) | $[________] | $[________] |
| Uninsured Health Care Expenses | $[________] | $[________] |
| Extraordinary Health Care (>5% of basic obligation) | $[________] | $[________] |
☐ Each parent pays proportional share of uninsured expenses: Petitioner [____]% / Respondent [____]%
7. CHILDCARE EXPENSES
| Item | Monthly Amount |
|---|---|
| Work-Related Day Care | $[________] |
| Petitioner's Share ([____]%): | $[________] |
| Respondent's Share ([____]%): | $[________] |
8. EXTRAORDINARY EXPENSES
| Expense Description | Monthly Amount | Petitioner Share | Respondent Share |
|---|---|---|---|
| Long-Distance Transportation | $[________] | $[________] | $[________] |
| Tuition/Education | $[________] | $[________] | $[________] |
| [____________________] | $[________] | $[________] | $[________] |
9. DEVIATION FACTORS
☐ No deviation requested
☐ Deviation requested based on:
☐ Sources of income and tax planning
☐ Non-recurring income
☐ Residential schedule (significant time with both parents)
☐ Children from other relationships
☐ Debt and high expenses
☐ Residential payments exceeding 30% of net income
☐ Income of new spouse reducing basic living expenses
☐ Extraordinary income of the child
☐ Tax benefits
☐ Other: [________________________________]
Deviation Amount: $[________] per month
Written Justification: [________________________________]
10. DURATION AND TERMINATION
Child support continues until the earliest of:
- Child reaches age 18
- Child reaches age 18 while still attending high school (continues to end of school year or age 19)
- Child marries or is emancipated
- Child enters military service
- Further order of the court
☐ Post-secondary support requested per RCW 26.19.090
11. STATE-SPECIFIC NOTES
- Economic Table Cap: For combined net income above the Economic Table range, the court exercises discretion per RCW 26.19.020.
- Self-Support Reserve: RCW 26.19.065(2)(c) — the court shall not set support below the self-support reserve of the obligor.
- Income Imputation: RCW 26.19.035(4) — income may be imputed to a voluntarily unemployed or underemployed parent.
- Quadrennial Review: RCW 26.19.025 requires review of child support guidelines every four years.
- Official Worksheets: The Washington Pattern Forms (WPF) child support worksheets must be filed with all support orders.
- No State Income Tax: Washington has no state income tax; however, it has a capital gains tax.
SUMMARY OF CHILD SUPPORT OBLIGATION
| Component | Petitioner | Respondent |
|---|---|---|
| Basic Support Obligation Share | $[________] | $[________] |
| Health Care Expenses | $[________] | $[________] |
| Day Care/Special Expenses | $[________] | $[________] |
| Deviation (if applicable) | $[________] | $[________] |
| Total Monthly Obligation | $[________] | $[________] |
Net Transfer Amount: $[________] per month from [________________] to [________________]
Prepared By: [________________________________]
Date: [__/__/____]
WSBA No.: [________]
Sources and References:
About This Template
Family law covers the paperwork that shapes divorce, custody, child support, adoption, guardianship, and other family matters. These filings are emotional and high-stakes, and they also have to meet strict procedural rules for service, financial disclosure, and parenting plans. Clean, accurate paperwork keeps the focus on getting a workable outcome for the family instead of getting derailed by technical problems that delay hearings or force amended filings.
Important Notice
This template is provided for informational purposes. It is not legal advice. We recommend having an attorney review any legal document before signing, especially for high-value or complex matters.
Last updated: May 2026
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