Inputs you need for Alimony Child Support in Washington
5 min read
Published April 15, 2026 • By DocketMath Team
Inputs you will need
To run DocketMath’s Alimony Child Support calculator for Washington (US-WA), gather the information below before you start. Washington calculations depend heavily on facts—especially income, the parenting time split, and whether the scenario you enter matches the assumptions in your case.
Primary CTA: **Go to the alimony child support calculator
Note: This checklist is for running the calculator with Washington jurisdiction-aware rules. It’s not legal advice, and it won’t replace verifying your final numbers in your case documents.
Core inputs (usually required to generate results)
Have the following ready so you can produce an output you can explain and defend:
Include wages, salary, and other regular compensation. Use gross (before taxes) unless the tool explicitly asks for net.
If the calculator requests specific deduction categories (or you need consistency with how income is entered), have totals available (for example, recurring payroll deductions).
Examples may include:
- bonuses and commissions
- self-employment income (using the tool’s expected method, such as net/average depending on your setup)
- rental income or other regular payments
Be ready to enter the schedule in whatever units the calculator uses (for example, days per month, overnights, or an annualized total). Consistency matters: use the same time basis the tool expects.
Have monthly premium amounts available and be clear about whether the coverage is for the children, and who pays.
Provide monthly totals (and, if the tool asks, indicate which parent the cost is attributed to or how you want it treated).
Alimony (spousal support) specific inputs
If your DocketMath run includes a spousal support (alimony) component, also gather:
The calculator may need facts that affect spousal support assumptions (for example, parameters tied to relationship duration). Have marriage/case facts available so you can enter the exact values the tool asks for.
If you’re modeling different periods (for example, “now” vs. “after a job change”), use approximate monthly figures for each period you want to model.
Document your uncertainty before you start
Before running the calculator, decide how you’ll handle incomplete or disputed facts. The output can change based on these choices:
Tip: if you plan multiple runs, write down which facts you changed so you can interpret differences in the results.
Where to find each input
Use these practical sources to collect consistent numbers for DocketMath. When in doubt, prioritize documents that show the amount and the time period (monthly/annual) clearly.
| Input | Where to find it | What to capture |
|---|---|---|
| Gross monthly income | Recent pay stubs; employer statements; HR portals | Gross pay per paycheck and pay frequency (weekly/biweekly/monthly); convert to monthly if needed |
| Self-employment income (if applicable) | Most recent tax return + recent business income records | Monthly average you can support with year-to-date numbers, normalized to monthly (as the tool expects) |
| Bonuses/commissions | Pay stubs + historical W-2/1099 records | A monthly average you can justify based on past payments |
| Parenting time split | Proposed parenting plan; calendar of overnights; draft schedules | Total days/overnights per parent, plus any consistent pattern the tool needs |
| Number/ages of children | Birth certificates; prior court paperwork | Exact birth dates/ages for each child |
| Child care costs | Receipts; provider invoices | Monthly amount and the expected attribution (if the tool asks) |
| Health insurance premiums | Plan statements; payroll deductions; insurer invoices | Monthly premium and whether it covers the children |
| Spousal support duration factors | Marriage records and case filings | The exact number/value the tool requires (for example, relationship duration in years, if asked) |
If you’re re-running scenarios (for example, “what if parenting time changes?”), keep a copy of the exact assumptions you entered each time. DocketMath works best when each run reflects a single coherent snapshot.
Run it
Once your inputs are organized, open DocketMath’s Alimony Child Support calculator and use the Washington (US-WA) workflow.
Enter the inputs in DocketMath and run the Alimony Child Support calculation to generate a clean breakdown: Run the calculator.
Checklist before you click Calculate
What to expect from the output
After you run the calculation, review:
- Child support amount (monthly)
- Any spousal support/alimony component (monthly), if your scenario includes it
- How changes affect the result, such as:
- Parenting time changes can shift how the child support calculation allocates the child-related costs.
- Health insurance and child care inputs typically move the child support total by adding or adjusting pass-through costs (depending on how the Washington logic is implemented in the tool).
- Income changes can significantly affect both child support and any modeled alimony.
To avoid confusing “what if” loops:
- parenting time (then run again)
- then child care
- then income
This helps you see what caused the output to move.
Timing context (general note, not tool-specific)
DocketMath is primarily a calculation tool, but some users also ask about timing and enforceability.
Washington’s general/default statute of limitations is commonly described as five years for many types of enforcement situations. The general rule period referenced here is RCW 9A.04.080 (with five years as the general/default period).
Important: The “general SOL” above is the default general period. It may not apply the same way to every claim type or procedural posture. If you’re relying on timing, verify the specific rule that applies to your case rather than assuming all support-related enforcement uses the default period.