A Washington Motion to Adjust Child Support Order is a legal document that is used to modify an existing court-ordered child support arrangement. This motion is typically filed by either the custodial or non-custodial parent when circumstances have changed and the existing order no longer reflects the current needs of the child or children involved. There are two types of Washington Motion to Adjust Child Support Order: temporary and permanent. A temporary motion is used when the parent filing the motion needs a temporary change in the current child support order, while a permanent motion is used for a permanent change in the child support order. Both types of motion require evidence of a substantial change in circumstances that affects the child's best interests.