MN HF3389

Establishes rebuttable presumption that child support orders are unreasonable when application of current guidelines results in calculated order at least 20 percent and at least $75 per month higher or lower than existing order (or 20 percent if current order is less than $75).

Creates rebuttable presumption for modification when medical support provisions are unenforceable, health coverage is unavailable, existing obligation is stated as percentage rather than dollar amount, obligor or obligee income decreases 20 percent through no fault of party, or foreign country deviation factor no longer applies.

Clarifies that child support order is not presumptively modifiable solely because obligor or obligee becomes responsible for additional nonjoint child born after existing order.

Specifies procedures for determining continued parenting expense adjustments and presumed equal parenting time calculations under previous child support guidelines when no parenting plan or order exists.

Modifies statute to codify case law regarding when enactment, amendment, or repeal of law constitutes substantial change in circumstances for child support modification purposes.