My partner has an upcoming Child Support hearing in WA. His child's mother has not released full financial records.

I am not licensed in Washington State, however, you can subpoena her financial and bank records from the appropriate entities and have those records sent to court under seal, which would make them admissible as evidence of her true income. If she has deposits going into her bank accounts that exceed what she claims she is making, the court will want to know where that money comes from, even if it stopped right before the last hearing. I suggest you call an attorney in your area and see if you can get a free consultation before the hearing.

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