Montana Paternity Acknowledgment
Official state formParentage and paternityFree downloadLast verified November 10, 2026
Voluntary form signed by an unmarried mother and the father to establish paternity and add the father to the child's Montana birth certificate. It is mailed to Montana Vital Records.
Who can use this form
- The natural mother and the natural father
- Both parents must sign before a notary
- It is a legally binding document; the father accepts the duty to support the child
- It can be withdrawn only within 60 days of signing or before a support or paternity order is entered, whichever is earlier
What to send with it
- The original notarized form signed by both parents
- A photocopy of a parent's valid ID
- Current address and phone number
- Payment payable to Montana Vital Records
Where to send it
- Mail to
- Montana Vital Records PO Box 4210 Helena, MT 59604-4210
- State fee
- Processing is free for children under one year (amended certificates are $16). For children over one year the total fee is $41 ($25 processing + $16 certificate).
- Typical processing
- 3-4 weeks
- Source
- Official government page