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Maine Your Business Partner for All Things Sales Tax

Maine Sales Tax Guide for Online Sellers

Prepared by Sales Tax Helper

Table of Contents

  1. Introduction
  2. Nexus Considerations
  3. General Rules and Compliance Considerations
  4. Registration, Collection, and Sourcing Rules
  5. Collection, Rates, and Remittance
  6. Pitfalls and Risks
  7. International Sellers
  8. Audit Considerations
  9. Voluntary Disclosure Agreements (VDAs)
  10. Conclusion
  11. References & Resources

1. Introduction

Purpose of This Guide

This comprehensive guide is designed specifically for online sellers conducting business in
Maine. Whether you're an Amazon seller, direct-to-consumer brand, marketplace seller,
international shipper, or e-commerce retailer, understanding Maine's sales tax obligations is
critical for your business success and compliance.

Maine's sales tax landscape has evolved significantly since the 2018 Wayfair decision, creating
new responsibilities for online sellers. The state has implemented economic nexus thresholds,
marketplace facilitator laws, and specific requirements for remote sellers that can trigger
substantial compliance obligations. These rules apply to all online sales channels, from major
marketplaces like Amazon and eBay to your own e-commerce website.

This guide will help you navigate Maine's sales tax requirements, understand when you must
register and collect tax, avoid common compliance pitfalls, and protect your business from costly penalties and audit exposure.

Why This Matters

Maine is increasingly aggressive when it comes to sales tax enforcement for online sellers. The
financial stakes are substantial, with criminal penalties possible for failure to collect and remit
sales tax, as sales taxes collected are deemed to be held in trust until remitted. Business owners can be held personally liable for unpaid trust fund taxes. Severe financial exposure can result from penalties of 10% of tax due or $25 (whichever is greater), plus interest and collection costs.

Business disruption through tax liens, asset seizure, and business closure are real consequences of non-compliance, and personal liability means business owners and officers can be held personally responsible for unpaid sales tax.

Common risks for online sellers include:

  • Inventory nexus through fulfillment centers (like Amazon FBA)
  • Marketplace confusion about collection responsibilities
  • Underestimating economic nexus thresholds
  • Failing to register after crossing $100,000 in sales
  • Mixing marketplace and direct sales without proper tax management

The good news is that with proper understanding and compliance systems, you can protect your business while taking advantage of Maine's market opportunity. This guide provides the roadmap to get you there, and the following sections will walk you through every aspect of Maine sales tax for online sellers, with practical examples and direct links to official state resources.

Ready to ensure compliance? The following sections will walk you through every aspect of
Maine sales tax for online sellers, with practical examples and direct links to official state
resources.

You're currently viewing a preview. To access the full guide and unlock tools designed to simplify your sales tax obligations, just create a free account.

Your free Sales Tax Helper account gives you:

  • Full access to this and other expert-written guides
  • Our Nexus Checker to assess your exposure across states
  • State- and industry-specific insights and compliance tips
  • Updates on new rules and best practices to stay ahead

No credit card required — just expert tools built to keep you compliant and confident.
Create your free account now to unlock the rest of this guide.

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