Connecticut Sales Tax Nexus — Rules, Thresholds & Filing Guide (2026)
Content for this page is being generated from the Connecticut Department of Revenue. Check back soon for full thresholds, filing cadence, and marketplace facilitator rules.
Source: https://portal.ct.gov/DRS
Connecticut sales tax by topic
- Connecticut · E-commerceGeneral e-commerce sales tax rules
- Connecticut · ShopifyShopify-specific sales tax guidance
- Connecticut · AmazonAmazon FBA and marketplace sales tax
- Connecticut · SaaSSoftware-as-a-service sales tax rules
- Connecticut · ThresholdsEconomic and transaction nexus thresholds
- Connecticut · FilingFiling frequency and procedures
- Connecticut · Marketplace FacilitatorMarketplace facilitator law for the state