What is the sales tax in zip code 06423? - The sales tax in zip code 06423 in East Haddam, Connecticut is 6.35% as of 2025. Use the 06423 sales tax rate calculator to calculate the sales tax for any purchase in 06423.
06423 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 |
|---|---|---|---|---|---|---|---|
| Middlesex | Connecticut | East Haddam | 06423 | 6.35% | 0% | 0% | 6.35% |