Washington State Child Support Calculator
Parent Information
Calculation Results
Understanding Washington State Child Support Factors
Washington State uses an income shares model for calculating child support, which is also used by many countries worldwide including Australia, Canada, and most European nations. This model estimates the amount parents would spend on their children if they lived together and allocates that amount proportionally based on each parent’s income and parenting time.
Income Calculation
Gross income includes salaries, bonuses, commissions, dividends, pensions, and other earnings. Some jurisdictions worldwide, like the UK and Germany, also consider certain benefits and allowances.
Parenting Time Adjustment
Washington State and many international jurisdictions (like New Zealand and South Africa) adjust support based on the number of overnights each parent has. More parenting time typically reduces child support obligations.
Additional Expenses
Child care, health insurance, and extraordinary expenses (education, special needs) are shared proportionally. Similar approaches exist in Canada, France, and Scandinavian countries.
Model Year Relevance
Washington updates its support schedules periodically. The selected year affects the calculation tables. Other countries like Australia and Japan also adjust guidelines regularly for inflation and policy changes.
International Comparison
While this calculator uses Washington State guidelines specifically, the principles align with international standards. Countries like the UK use the Child Maintenance Service, Australia uses the Child Support Agency, and Canada uses federal/provincial guidelines – all considering similar factors: parental income, number of children, and care arrangements.