Connecticut Gas Tax Calculator
2026Calculate total gas tax per gallon in Connecticut, including the federal excise tax of $0.184/gal and CT state fuel taxes. Compare Connecticut gas and diesel tax rates for 2026.
By Konstantin Iakovlev · Updated
Fuel Needed
1.0 gal
Trip Cost
$4.10
Annual Cost
$1,066.00
Fuel Cost Breakdown
| Total Distance | 30.0 miles |
| Fuel Needed | 1.00 gallons |
| One-Way Cost | $4.10 |
| Trip Cost | $4.10 |
| Weekly Cost | $20.50 |
| Monthly Cost | $88.77 |
| Annual Cost | $1,066.00 |
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
How much is gas tax in Connecticut?
Connecticut does not use a standard deduction. Instead, it provides a personal exemption that phases out at higher income levels. The state also applies a tax recapture provision that increases effective rates for high earners.
Connecticut's Paid Family and Medical Leave (CT PFML) provides up to 12 weeks of paid leave at up to 95% of wages (capped at 60x minimum wage). Employee contributions are 0.5% of wages.
Connecticut has one of the highest average property tax rates in the nation at approximately 1.98%. The state has an estate tax with an exemption matching the federal level.
The minimum wage of $16.94/hr is indexed to the Employment Cost Index and adjusts annually. Tipped employees receive $6.94/hr.
Connecticut's income tax uses a complex system with both marginal rates and a 3% tax on all Connecticut taxable income for filers exceeding certain thresholds, effectively creating higher marginal rates.
Connecticut Tax Rates (2026)
| Federal Gas Tax | $0.184/gal |
| State Sales Tax | 6.35% |
| State Income Tax | progressive (up to 6.99%) |
| Avg. Property Tax Rate | 1.98% |
Gas tax — frequently asked questions
What is the federal gas tax in 2026?
The federal motor fuel excise tax is 18.4¢ per gallon on gasoline and 24.4¢ per gallon on diesel. The federal rate has been unchanged since 1993; only state and local taxes have moved. Federal revenue funds the Highway Trust Fund, which finances most interstate and bridge maintenance.
How much is gas tax by state?
State gas tax rates range from 8.95¢/gal in Alaska to over 60¢/gal in California, Pennsylvania, and Illinois. Most states layer 20–40¢/gal of state tax on top of the 18.4¢ federal rate. Some states index gas tax to inflation; others raise it via legislation as needed.
Why does gas cost more at the pump than the rate suggests?
The pump price reflects crude oil cost, refining margin, distribution and retail markup, plus combined federal + state + local taxes. In high-tax states like California, taxes alone account for ~70¢/gallon. EV-charging stations are taxed differently (often by kWh, sometimes via a separate registration surcharge).
Are gas taxes deductible?
Gas taxes are not deductible on personal federal returns. Self-employed drivers using actual vehicle expenses can include fuel costs in business deductions, but the cleaner method is the IRS standard mileage rate ($0.70/mile in 2026), which already bundles fuel, depreciation, and maintenance.
Will gas tax change in 2026?
Several states have scheduled gas-tax adjustments for 2026 (typically inflation-indexed). Federal rates remain at 18.4¢/24.4¢. Many states are also adding EV registration fees ($100–$200/year) to recoup lost gas-tax revenue as electric vehicles displace combustion engines.