Maryland Privacy Law
Maryland Online Data Privacy Act
Overview
The Maryland Online Data Privacy Act (MODPA) was signed into law on May 9, 2024, and becomes effective on October 1, 2025. Maryland's law is considered one of the strongest state privacy laws, with no cure period, low applicability thresholds, a requirement to honor universal opt-out mechanisms, and robust data minimization requirements. The MODPA provides Maryland consumers with comprehensive privacy rights, including the right to access, correct, delete, and port personal data, as well as opt-out rights for data sales, targeted advertising, and profiling. Notably, the MODPA goes beyond most other state privacy laws by imposing strict data minimization requirements — businesses may only collect and process personal data that is reasonably necessary and proportionate to the purpose for which it is collected. The law applies to entities conducting business in Maryland or targeting Maryland consumers that control or process personal data of 35,000 or more consumers (excluding payment transaction data), or control or process personal data of 10,000 or more consumers while deriving more than 20% of gross revenue from the sale of personal data. The MODPA does not include a cure period, making it one of the strictest state privacy laws from an enforcement perspective. Penalties can reach $10,000 per violation, enforced by the Maryland Attorney General.
Applicability Thresholds
Conditions are joined by OR — meeting ANY one triggers applicability.
Consumer Rights
Key Changes in 2025-2026
- Law becomes effective October 1, 2025 — no cure period from day one
- Strict data minimization requirements in full effect
- Universal opt-out mechanism requirement in effect from the law's effective date
- Maryland AG expected to be active in enforcement given the no-cure-period approach
Enforcement Details
Sensitive Data Categories
Consent model: opt-in
Universal Opt-Out / GPC Requirements
Businesses must recognize and honor universal opt-out mechanisms such as Global Privacy Control (GPC) for opt-out of data sales and targeted advertising from the law's effective date.
Effective: October 1, 2025
Minor / Child Protections
The MODPA includes strong minor protections. It prohibits the sale of personal data of consumers under 18 and bars targeted advertising directed at minors. The law also restricts the collection and processing of minor data beyond what is strictly necessary.
Compliance Checklist
- 1Assess applicability — note the lower thresholds of 35,000 consumers or 10,000+ with 20% data sale revenue
- 2Implement strict data minimization practices — only collect data reasonably necessary for the disclosed purpose
- 3Implement universal opt-out signal recognition (GPC and similar mechanisms)
- 4Update privacy notices with all MODPA-required disclosures
- 5Implement consumer rights request mechanisms with 45-day response period
- 6Obtain opt-in consent for processing sensitive personal data
- 7Review and restrict processing of minor data — no sale or targeted advertising for consumers under 18
Maryland Privacy Law FAQ
Official Resources
Disclaimer: PrivacyLawMap provides general information about US state privacy laws for educational purposes only. This is NOT legal advice. Privacy laws are complex and frequently amended. Consult with a qualified privacy attorney for advice specific to your business. PrivacyLawMap makes no warranties about the accuracy or completeness of this information.