Sales Tax Nexus Rules in Maine: Thresholds, Requirements, and CPA Action Steps

Economic nexus threshold (current, verified 2026-06-16): $100,000 in gross sales of tangible personal property and taxable services; no transaction-count threshold (removed Jan 1, 2022).

Introduction

Maine applies economic nexus rules with centralized administration and no local sales taxes, making compliance relatively simple for remote sellers.

What Creates Sales Tax Nexus in Maine?

Physical Nexus

Includes offices, inventory, employees, or service activity.

Economic Nexus

Remote sellers may establish nexus without physical presence.

Marketplace Nexus

Marketplace facilitators collect and remit tax on behalf of sellers.

Economic Nexus Thresholds in Maine

A seller establishes economic nexus with $100,000 or more in Maine sales in the current or previous calendar year. Maine is revenue-only — there is no 200-transaction threshold. The 200-transaction prong was removed effective January 1, 2022.

Does Maine Impose Sales Tax?

Yes. Maine imposes a state-administered sales and use tax with no local sales taxes.

Registration Requirements

Registration is completed with Maine Revenue Services.

Filing Frequency and Due Dates

• Monthly filing is typical

• Returns due by the 15th of the following month

Penalties and Interest

• Late filing and payment penalties

• Interest accrues from the original due date

Conclusion

Maine nexus compliance is administratively straightforward but still requires accurate threshold monitoring.