What is the sales tax in zip code 06840? - The sales tax in zip code 06840 in New Canaan, Connecticut is 6.35% as of 2025. Use the 06840 sales tax rate calculator to calculate the sales tax for any purchase in 06840.
06840 Sales Tax Rate Calculator |
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Below is a list of the state sales tax, city sales tax, and county tax rate for .
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Fairfield | Connecticut | New Canaan | 06840 | 6.35% | 0% | 0% | 6.35% |