In Maine, the sales tax filing frequency for businesses is determined by the average monthly sales tax liability. The classification and deadlines are as follows:

Determination of Filing Frequency:

1. Monthly Filing: Criteria: Businesses with an average monthly sales tax liability exceeding $600. Due Date: Sales tax returns are due by the 20th of the month following the reporting period.

2. Quarterly Filing: Criteria: Businesses with an average monthly sales tax liability between $100 and $600. Due Date: Sales tax returns are due by the 20th of the month following the end of each quarter (end of March, June, September, December).

3. Annual Filing: Criteria: Businesses with an average monthly sales tax liability under $100. Due Date: Annual sales tax returns are due by January 20, 2025, for the entire 2024 tax year.

Key Points:

• Filing Frequency Determination: Based on the business’s average monthly sales tax liability.

• Adjustments: If a business’s sales tax liability changes significantly, MRS may adjust the filing frequency accordingly.

• Penalties for Late Filing: Missing these deadlines can result in penalties and interest charges.

Businesses should adhere to these specific deadlines to ensure timely filing and payment of sales taxes, avoiding penalties and maintaining compliance with Maine’s tax laws.