Do I need to complete all 8 parts?

Parts 1-6 are required for every worksheet. Parts 7-8 are informational and for court consideration — complete them if you have relevant circumstances to document.

Can I save and come back later?

Yes — your progress is automatically saved in your browser. Return to this page on the same device to continue where you left off.

What is the difference between the worksheet and the quick calculator?

The quick calculator gives an instant estimate using income and children only. The full worksheet includes healthcare, daycare, education expenses, credits, and all 8 required AOC parts for court submission.

Will this worksheet be accepted by Washington courts?

This wizard follows the official 2026 AOC format (RCW 26.19). The figures match the mandatory WSCSS forms. All results are estimates — final orders are determined by a Washington State court.

What is the Self-Support Reserve?

The SSR ($2,394/mo in 2026) ensures the paying parent keeps enough income for basic needs. If paying the full obligation would leave the payer below $2,394, the obligation is automatically reduced. Minimum is still $50 per child per month. Detailed definition available in our glossary .

Can I use this for a child support modification?

Yes. The same 8-part worksheet is used for new orders, modifications, and annual reviews. A 15% or more change in either parent's net income under RCW 26.09.170 typically qualifies for modification under Washington law.

What is the Washington State Child Support Worksheet?

The WSCSS worksheet is an 8-part mandatory form required by RCW 26.19 for all child support proceedings in Washington State. Courts use it to calculate the presumptive monthly transfer payment based on both parents combined net income, number of children, and additional expenses.

Who Needs to Complete This Worksheet?

Both parents must complete the worksheet for new child support orders, modifications, annual reviews, temporary support orders, and administrative hearings through DSHS.

What Income Do I Use?

Washington uses net monthly income — not gross. Net income is gross wages minus mandatory deductions including federal and state income taxes, FICA, mandatory union dues, and required pension contributions.

How Does Washington Calculate Child Support in 2026?

Washington uses the Income Shares Model. Both parents net incomes are combined and used to look up the basic support obligation in the 2026 Economic Table. Each parent pays their proportional share based on their percentage of combined income.

Back to Calculator

Washington State Child Support Worksheet 2026

Complete our 8-part child support worksheet online, built to match the official AOC format. Auto-calculates all figures using the 2026 RCW 26.19 economic tables — free for all 39 Washington counties.

Worksheet Pro

2026 Guidelines

PARTS

LIVE ESTIMATE

Combined Income$0

P1 Share—

P2 Share—

Est. Transfer—

Estimate only

Updates as you type

YOU ARE HERE

Part 1: Income

Enter gross monthly income for both parents. Deductions are calculated next.

2026 KEY VALUES

Self-Support Reserve

$2,394/mo

RCW 26.19.065(2)(b)

Minimum Support

$50 per child per month/month

Economic Table Max

$50,000 combined net

SSR Update Date

January 1, 2026

YOUR PROGRESS

⬜Part 1 · Income

⬜Part 2 · Basic Child Support Obligation

⬜Part 3 · Healthcare, Daycare & Education

⬜Part 4 · Gross Child Support Obligation

⬜Part 5 · Child Support Credits

⬜Part 6 · Standard Calculation & Presumptive Amount

⬜Part 7 · Additional Informational Factors

⬜Part 8 · Additional Factors for Court

0 of 8 parts complete

NEED HELP?

📄 AOC Instructions 📊 2026 Schedule PDF 📖 Our Methodology

Part 1 of 8 · Income

13% complete

13% Complete

Step 1 OF 8Follows Official AOC Format · RCW 26.19 Compliant

Part 1: Income

Enter gross monthly income for both parents. Deductions are calculated next.

CASE INFORMATION

These fields identify your case for court filing. They do not affect any calculations.

County

Case Number (optional)

PART 1: INCOME

1aWages and Salaries

Parent 1

Parent 2

1bInterest and Dividend Income

Parent 1

Parent 2

1cBusiness Income

Parent 1

Parent 2

1dMaintenance Received

Parent 1

Parent 2

1eOther Income

Parent 1

Parent 2

1fImputed Income

Parent 1

Parent 2

1gTotal Gross Monthly Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

MONTHLY DEDUCTIONS FROM GROSS INCOME

2aIncome Taxes (Federal and State)

Parent 1

Parent 2

2bFICA / Self-Employment Taxes

Parent 1

Parent 2

2cMandatory State Deductions

Parent 1

Parent 2

2dState Industrial Insurance Deductions

Parent 1

Parent 2

2eMandatory Union/Professional Dues

Parent 1

Parent 2

2fMandatory Pension Plan Payments

Parent 1

Parent 2

2gVoluntary Retirement Contributions

Parent 1

Parent 2

2hMaintenance Paid

Parent 1

Parent 2

2iNormal Business Expenses

Parent 1

Parent 2

2jTotal Deductions from Gross Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

3Monthly Net Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

4Combined Monthly Net Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

5_childrenNumber of children

5_per_childBasic Support Per Child

Parent 1

🔒

Parent 2

🔒

Calculated automatically

5Basic Child Support Obligation

Parent 1

Parent 2

6Proportional Share of Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

Follows Official AOC Format · RCW 26.19 Compliant

Est. Transfer

—

What Happens After You Complete This Worksheet?

Once you complete all 8 parts, your worksheet produces the presumptive transfer payment amount required by Washington courts. Here is what to do next:

1
Download your completed worksheet as a PDF
2
File it with your county superior court
3
Attach it to your parenting plan or child support order
4
Both parents sign under penalty of perjury
5
The judge or reviewing officer approves the final order

Washington courts require this worksheet for all new child support orders, modifications, and annual reviews under RCW 26.19.

Want to know how we arrived at these figures?

Read our Editorial Methodology

Washington State Child Support Worksheet — 8-Part 2026 Official Format

This wizard generates the official Washington State child support worksheet as required by RCW 26.19 and the 2026 Administrative Office of the Courts (AOC) guidelines. Complete all 8 parts to produce a court-ready calculation for any Washington county.

Part 1Income — Gross monthly wages, business income, maintenance received, and imputed income for both parents
Part 2Basic Child Support Obligation — Calculate the presumptive basic support amount from the 2026 Washington State economic table based on combined net monthly income and number of children
Part 3Healthcare, Daycare & Education — Enter monthly health insurance premiums for the children, work-related daycare costs, and approved extraordinary educational expenses paid by either parent
Part 4Gross Child Support Obligation — Combine the basic support obligation with additional expenses to determine the total gross child support obligation before credits are applied
Part 5Child Support Credits — Apply credits for health insurance paid directly, daycare costs paid directly to the provider, and other qualifying payments made outside the transfer payment
Part 6Standard Calculation & Presumptive Amount — Determine each parent's proportional share of the gross obligation and calculate the final presumptive monthly transfer payment amount
Part 7Additional Informational Factors — Document existing child support obligations for other children, secondary families, and other relevant financial factors for the court record
Part 8Additional Factors for Court — Include any requests for deviation from the presumptive amount, special circumstances, extraordinary expenses, or other factors requiring judicial consideration

For a quick estimate without the full worksheet, use our Washington child support calculator. For county-specific guidance, see our King County child support guide or review the 2026 calculation methodology.

Legal Note: This wizard produces estimates based on the 2026 Washington State Child Support Schedule. All calculations are estimates only. Final orders are determined by a Washington State court.

Worksheet Questions

Frequently Asked Questions About the Washington Child Support Worksheet

Use your most recent pay stub for FICA and withholding amounts. For annual taxes, divide last year's tax return total by 12.

Only fill in imputed income if a parent is voluntarily unemployed or working below their earning capacity. Leave blank if both parents are employed.

Part 1 of 8 · Income

13% complete

13% Complete

Step 1 OF 8Follows Official AOC Format · RCW 26.19 Compliant

Part 1: Income

Enter gross monthly income for both parents. Deductions are calculated next.

CASE INFORMATION

These fields identify your case for court filing. They do not affect any calculations.

County

Case Number (optional)

PART 1: INCOME

1aWages and Salaries

Parent 1

Parent 2

1bInterest and Dividend Income

Parent 1

Parent 2

1cBusiness Income

Parent 1

Parent 2

1dMaintenance Received

Parent 1

Parent 2

1eOther Income

Parent 1

Parent 2

1fImputed Income

Parent 1

Parent 2

1gTotal Gross Monthly Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

MONTHLY DEDUCTIONS FROM GROSS INCOME

2aIncome Taxes (Federal and State)

Parent 1

Parent 2

2bFICA / Self-Employment Taxes

Parent 1

Parent 2

2cMandatory State Deductions

Parent 1

Parent 2

2dState Industrial Insurance Deductions

Parent 1

Parent 2

2eMandatory Union/Professional Dues

Parent 1

Parent 2

2fMandatory Pension Plan Payments

Parent 1

Parent 2

2gVoluntary Retirement Contributions

Parent 1

Parent 2

2hMaintenance Paid

Parent 1

Parent 2

2iNormal Business Expenses

Parent 1

Parent 2

2jTotal Deductions from Gross Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

3Monthly Net Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

4Combined Monthly Net Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

5_childrenNumber of children

5_per_childBasic Support Per Child

Parent 1

🔒

Parent 2

🔒

Calculated automatically

5Basic Child Support Obligation

Parent 1

Parent 2

6Proportional Share of Income

Parent 1

🔒

Parent 2

🔒

Calculated automatically

Follows Official AOC Format · RCW 26.19 Compliant

Washington State Child Support Worksheet — 8-Part 2026 Official Format

Part 1Income — Gross monthly wages, business income, maintenance received, and imputed income for both parents

Part 2Basic Child Support Obligation — Calculate the presumptive basic support amount from the 2026 Washington State economic table based on combined net monthly income and number of children

Part 3Healthcare, Daycare & Education — Enter monthly health insurance premiums for the children, work-related daycare costs, and approved extraordinary educational expenses paid by either parent

Part 4Gross Child Support Obligation — Combine the basic support obligation with additional expenses to determine the total gross child support obligation before credits are applied

Part 5Child Support Credits — Apply credits for health insurance paid directly, daycare costs paid directly to the provider, and other qualifying payments made outside the transfer payment

Part 6Standard Calculation & Presumptive Amount — Determine each parent's proportional share of the gross obligation and calculate the final presumptive monthly transfer payment amount

Part 7Additional Informational Factors — Document existing child support obligations for other children, secondary families, and other relevant financial factors for the court record

Part 8Additional Factors for Court — Include any requests for deviation from the presumptive amount, special circumstances, extraordinary expenses, or other factors requiring judicial consideration

Legal Note: This wizard produces estimates based on the 2026 Washington State Child Support Schedule. All calculations are estimates only. Final orders are determined by a Washington State court.

Frequently Asked Questions About the Washington Child Support Worksheet

Use your most recent pay stub for FICA and withholding amounts. For annual taxes, divide last year's tax return total by 12.

Only fill in imputed income if a parent is voluntarily unemployed or working below their earning capacity. Leave blank if both parents are employed.

Washington State Child Support Worksheet 2026

Official Child Support Worksheet

Calculation Results Summary

Part 1: Income

Part 2: Basic Child Support Obligation

Part 3: Healthcare, Daycare & Education

Part 4: Gross Child Support Obligation

Part 5: Child Support Credits

Part 6: Standard Calculation & Presumptive Amount

Part 7: Additional Informational Factors

Part 8: Additional Factors for Court

Part 1: Income

What Happens After You Complete This Worksheet?

Washington State Child Support Worksheet — 8-Part 2026 Official Format

Frequently Asked Questions About the Washington Child Support Worksheet

Washington State Child Support Worksheet 2026

Official Child Support Worksheet

Calculation Results Summary

Part 1: Income

Part 2: Basic Child Support Obligation

Part 3: Healthcare, Daycare & Education

Part 4: Gross Child Support Obligation

Part 5: Child Support Credits

Part 6: Standard Calculation & Presumptive Amount

Part 7: Additional Informational Factors

Part 8: Additional Factors for Court

Part 1: Income

What Happens After You Complete This Worksheet?

Washington State Child Support Worksheet — 8-Part 2026 Official Format

Frequently Asked Questions About the Washington Child Support Worksheet

Washington State Child Support Worksheet 2026

Official Child Support Worksheet

Calculation Results Summary

Part 1: Income

Part 2: Basic Child Support Obligation

Part 3: Healthcare, Daycare & Education

Part 4: Gross Child Support Obligation

Part 5: Child Support Credits

Part 6: Standard Calculation & Presumptive Amount

Part 7: Additional Informational Factors

Part 8: Additional Factors for Court

Part 1: Income

Washington State Child Support Worksheet — 8-Part 2026 Official Format

Frequently Asked Questions About the Washington Child Support Worksheet

What if I don't know my exact tax deductions?

What is imputed income and do I need it?

Do I need to complete all 8 parts?

Can I save and come back later?

What is the difference between the worksheet and the quick calculator?

Will this worksheet be accepted by Washington courts?

What is the Self-Support Reserve?

Can I use this for a child support modification?

What is the Washington State Child Support Worksheet?

Who Needs to Complete This Worksheet?

What Income Do I Use?

How Does Washington Calculate Child Support in 2026?

Washington State Child Support Worksheet 2026

Official Child Support Worksheet

Calculation Results Summary

Part 1: Income

Part 2: Basic Child Support Obligation

Part 3: Healthcare, Daycare & Education

Part 4: Gross Child Support Obligation

Part 5: Child Support Credits

Part 6: Standard Calculation & Presumptive Amount

Part 7: Additional Informational Factors

Part 8: Additional Factors for Court

Part 1: Income

Washington State Child Support Worksheet — 8-Part 2026 Official Format

Frequently Asked Questions About the Washington Child Support Worksheet

What if I don't know my exact tax deductions?

What is imputed income and do I need it?

Do I need to complete all 8 parts?

Can I save and come back later?

What is the difference between the worksheet and the quick calculator?

Will this worksheet be accepted by Washington courts?

What is the Self-Support Reserve?

Can I use this for a child support modification?

What is the Washington State Child Support Worksheet?

Who Needs to Complete This Worksheet?

What Income Do I Use?

How Does Washington Calculate Child Support in 2026?