← All states·MCDPA

Montana (MCDPA) Privacy Law Compliance

Montana's Consumer Data Privacy Act (effective October 1, 2024) uses one of the lowest thresholds in the country — only 50,000 consumers — making it relevant for surprisingly small SaaS with US-wide user bases. The law follows the Connecticut template closely, including mandatory UOOM honouring from January 1, 2025.

Statute
Montana Consumer Data Privacy Act
Mont. Code §30-14-2801 et seq.
Effective
Oct 1, 2024
Enforcer
Montana Attorney General
(exclusive)
Consumer rights
8
8 business obligations
Run free policy audit Does this apply to me? ↓

Who must comply

Exemptions

Consumer rights (8)

Right to access / know
Confirm whether personal data is processed and obtain a copy in a portable format
Right to correct
Correct inaccurate personal data
Right to delete
Request deletion of personal data the controller has collected
Right to data portability
Receive data in a portable, machine-readable format
Right to opt out of sale
Opt out of the sale of personal data to third parties
Right to opt out of targeted advertising
Opt out of cross-context behavioural advertising
Right to opt out of profiling with legal effect
Opt out of automated decisions producing legal or similarly significant effects
Right to appeal
Appeal a controller's refusal to honour a rights request (typically 45–60 days)

Business obligations (8)

Public privacy notice
Clear, accessible notice of categories collected, purposes, third parties, rights, and contact channel
Rights response within 45 days
Respond to consumer rights requests within 45 days (extendable by 45 more with notice)
Data processing agreements
Written contracts with processors restricting their processing to the controller's documented instructions
Data protection assessments
Document risk assessment for targeted advertising, sale, profiling, sensitive data processing
Honour universal opt-out signals (GPC)
Recognise the Global Privacy Control browser signal as a valid opt-out (where required)
Reasonable security practices
Administrative, technical, physical safeguards appropriate to the data's sensitivity
Data minimisation + purpose limitation
Collect only what is adequate, relevant, and reasonably necessary for the disclosed purposes
Opt-in for sensitive data + minors 13–16
Affirmative consent before processing sensitive data and before processing teen data for targeted ads or sale

Required privacy notice elements

  1. Categories of personal data processed
  2. Purpose of processing
  3. Categories of personal data shared + categories of third parties
  4. Rights + how to exercise + appeal process
  5. Sale / targeted advertising disclosure + opt-out
  6. Statement of UOOM recognition
Don't hand-check this. Drop your existing privacy policy into the free policy audit and we'll grade every required element and surface the missing language.

Penalties

Civil penalty per violation (CUTPA)
Up to $10,000
Mont. Code §30-14-142 (Consumer Protection Act enforcement)
60-day cure period
Sunset Apr 1, 2026
Cure now discretionary

Common compliance pitfalls

Low threshold catches surprisingly small SaaS
The 50,000 consumer threshold is the lowest in the country. A modestly successful B2C SaaS or media site with US distribution can easily hit 50K Montana users.
GPC not honoured by Jan 2025
Montana mandates UOOM (GPC) honouring from January 1, 2025. The 90-day delay between effective date and UOOM was a configuration window — now closed.

FAQ

Why is the 50K threshold significant?
Most state laws use 100K. Montana's lower 50K threshold makes the law applicable to many more companies. Combined with the 'producing products/services targeted to Montana residents' language, any US-wide consumer app is likely in scope.
How does Montana compare to Connecticut?
Very similar (rights, structure, enforcement). Montana has a lower threshold (50K vs 100K), higher penalty cap ($10K vs $5K via CUTPA), and applies similar UOOM honouring.

Related state laws

Oregon (OR)
OCPA
Colorado (CO)
CPA
Connecticut (CT)
CTDPA

Grade your Montana privacy policy in 20 seconds

Paste your privacy policy and we'll score it against MCDPA requirements — categories collected, rights enumeration, opt-out mechanism, sensitive data handling. Free, 3 audits/day, no signup.

Run free audit for Montana