Sales tax in Knox County, Maine
The sales tax rate in Knox County, Maine is 5.5%. That is a 5.5% state rate, with no county rate on top: Knox County levies none, and it is the same at every address in the county.
What is the sales tax rate in Knox County?
| Maine state rate | 5.5% |
|---|---|
| Combined rate | 5.5% |
Why the rate here is not the whole story
No local sales taxes anywhere in the state; groceries and prescription drugs are exempt, but a separate 8% tax applies to prepared food and lodging.
How do I find the exact rate for an address in Knox County?
The rate is the same across Knox County, but if you are collecting tax it is worth confirming against the source. Use Maine's own lookup. A vendor's calculator is not the state speaking.
Who has to collect sales tax in Knox County?
A seller with a physical presence in Maine collects at the rate for the address where the sale takes place. A remote seller collects once it passes Maine's economic nexus threshold, which is a separate question from the rate and is covered on our sales tax nexus checker. Marketplace facilitators generally collect on behalf of their sellers.
How does Knox County compare?
See Maine sales tax for the statewide picture, including the average local rate and what is exempt. Property tax is a separate tax with separate rules: property tax in Knox County.
Sources
- Knox County rates: Maine Revenue Services / Tax Foundation, State and Local Sales Tax Rates (Jan. 2026)
- Collected and verified September 10, 2026. Confidence: S on the rate components (P read on a primary agency page, S strong but indirect, U unverified).