Sales tax rate changes
Connecticut sales tax rate changes
Updated October 8, 2026
Last verified October 2, 2026. That is the UTC date the Connecticut Department of Revenue Services pages were retrieved. It is not an effective date.
US Sales Tax Rates monitors the sales tax publication Connecticut Department of Revenue Services posts for Connecticut: when the chart takes effect, how many jurisdictions changed, and what is coming next. It does not calculate tax on a sale.
Current Connecticut chart
The Connecticut file prints no effective date, so no effective date is given here.
Every Connecticut jurisdiction on the loaded file is on the Connecticut rate chart.
Changes on the current Connecticut chart
No Connecticut chart on file has a jurisdiction marked changed or upcoming compared with the previous file.
Upcoming Connecticut changes
No upcoming Connecticut rate change is on file.
What is monitored
Connecticut Department of Revenue Services publishes the loaded sales tax chart for Connecticut.
The loaded publication has no printed effective window, so this chart is not classified as in force. The loaded file is HTML.
The loaded file has 1 jurisdiction rows.
Not compared.
A refresh fails closed. When the file cannot be read, or two readings disagree, the period is blocked and no rate is filled in.
This note does not calculate tax on a sale.
Official Connecticut sources
These are official Connecticut Department of Revenue Services pages. The current rate file is found from these pages. A direct rate-file address is not linked here.
How the chart is checked
A refresh fails closed. When the file cannot be read, or two readings disagree, the period is blocked and no rate is filled in.
Nothing in this note is estimated. When a displayed figure disagrees with the official publication, the publication wins. That rule is recorded under corrections.
Rate monitoring is not a tax calculation
This note reports how the Connecticut publication is monitored. It does not calculate tax on a cart, invoice, ZIP code, or address, and it does not file a return.
Monitor Connecticut
Monitoring follows the official publication. The sample report shows the shape of a change row.