Key facts: Montana requires a 30-day waiting period after creditor notice before claims can be filed; estates exceeding $50,000 must follow full probate creditor claims procedures; claims must be in writing with specific required information including claimant name, address, nature and amount of claim; personal representatives may allow, allow in part, or reject creditor claims; rejected claims must be challenged in court within 60 days or they are permanently disallowed; Montana law provides statutory priority for payment of allowed claims.