What makes the total cost go up
The least expensive Oregon divorces are usually the ones with a full agreement from the start. If you and your spouse already agree on who keeps which assets, who pays which debts, and whether anyone will receive support, the paperwork is more straightforward. If you do not agree, cost rises quickly because someone has to draft proposals, revise terms, and manage the back and forth.
Children usually add complexity, even in a fully amicable case. Oregon law requires a parenting plan in cases involving custody or parenting time under ORS 107.102. Child support must follow Oregon Child Support Guidelines, so the parties need accurate income information, insurance details, and a workable schedule.
Property issues can also increase cost when a house, retirement accounts, a family business, or significant debt is involved. Dividing a checking account is simple. Figuring out equity, refinancing, Qualified Domestic Relations Orders, or tax-sensitive transfers is not.
Jurisdiction questions create another layer. If children have lived in more than one state, the Uniform Child Custody Jurisdiction and Enforcement Act at ORS 109.701 and following may affect whether Oregon can make custody orders. Sorting that out early can prevent expensive mistakes.