What are the Connecticut highway use fee rates?

28 bands by gross weight: 2.5 cents a mile at 26,000-28,000 lb, rising about 0.29 cents per 2,000 lb to 10 cents at 78,001-80,000 lb, and 17.5 cents above 80,000 lb.

Who needs a CT highway use fee permit?

Anyone who operates on Connecticut highways a vehicle of 26,000 lb or more gross weight in FHWA classes 8 to 13; register on myconneCT for a Highway Use Fee permit.

How often is the CT highway use fee filed?

Quarterly, from the October to December 2023 quarter on; the return is due the last day of the month after the quarter.

Is the highway use fee the same as IFTA?

No. It is a separate Connecticut fee with its own return on myconneCT; IFTA fuel tax is filed with your base jurisdiction.

Free calculator

Connecticut highway use fee calculator

Since January 1, 2023 Connecticut charges heavy multi-unit trucks a fee per mile driven on its highways, by gross weight. Type each truck's gross weight, its vehicle type and its Connecticut miles for the quarter.

Sample data: a made-up quarter for one 80,000 lb tractor, so you can see the result. Type your own weight and miles.

Quarter

Truck 1

Registered / declared weightlbGross weight on the cab card, e.g. 80000.Unit nameVehicle

Connecticut milesmi

Rates: the official tables of each state, read 2026-09-30 (sources below). Your numbers stay in this browser; nothing is uploaded.

Result

CT HUF for 3Q2026: $30.00
Miles: 300 mi
Due: Saturday, October 31, 2026

Saturday, October 31, 2026 is a weekend and the state pages we read do not say whether it moves; file by the Friday before to be safe. Estimates from the official rate tables of Kentucky, New York, New Mexico, Oregon and Connecticut for the period shown. Not tax advice. File with each state and check its figures. Not affiliated with any state agency.

By state, 3rd quarter 2026 (July to September)
State	Miles	Tax	Due
CT HUFFile the CT HUF return and pay.	300	$30.00	Oct 31, 2026a weekend

Line by line: miles x the table rate
Truck, state	Miles	Rate	Tax
Truck 1, CT HUFConnecticut miles at 80,000 lb	300	$0.1000/mi	$30.00

Your IFTA fuel tax for the same quarter: FuelTaxTally.

Filing this quarter? Pro makes the worksheet.

One Excel sheet per state with live rate lookups and totals for every truck, and a printable summary per truck to keep for audit or hand to your filer.

See Pro

How it works

An eligible motor vehicle has a gross weight of 26,000 lb or more and an FHWA class from 8 to 13: a tractor or straight truck pulling one or more trailers. A straight truck running alone (classes 5 to 7) is not eligible. The fee is the Connecticut miles times the rate of the gross weight band, from $0.025 at 26,000-28,000 lb to $0.175 above 80,000 lb.

Sample data: 300 Connecticut miles at 80,000 lb x $0.100 = $30.00.

The return is quarterly since the October 2023 quarter, filed and paid on myconneCT by the last day of the month after the quarter: Saturday, October 31, 2026 for July to September 2026 (a Saturday; file by the Friday before to be safe). Registered carriers file every quarter, with or without Connecticut miles. Late: 10% of the tax or $50, whichever is greater, plus 1% interest a month.

Connecticut highway use fee by gross weight
Gross weight	Per mile	On 1,000 miles
26,000-28,000 lb	$0.0250/mi	$25.00
28,001-30,000 lb	$0.0279/mi	$27.90
30,001-32,000 lb	$0.0308/mi	$30.80
32,001-34,000 lb	$0.0337/mi	$33.70
34,001-36,000 lb	$0.0365/mi	$36.50
36,001-38,000 lb	$0.0394/mi	$39.40
38,001-40,000 lb	$0.0423/mi	$42.30
40,001-42,000 lb	$0.0452/mi	$45.20
42,001-44,000 lb	$0.0481/mi	$48.10
44,001-46,000 lb	$0.0510/mi	$51.00
46,001-48,000 lb	$0.0538/mi	$53.80
48,001-50,000 lb	$0.0567/mi	$56.70
50,001-52,000 lb	$0.0596/mi	$59.60
52,001-54,000 lb	$0.0625/mi	$62.50
54,001-56,000 lb	$0.0654/mi	$65.40
56,001-58,000 lb	$0.0683/mi	$68.30
58,001-60,000 lb	$0.0712/mi	$71.20
60,001-62,000 lb	$0.0740/mi	$74.00
62,001-64,000 lb	$0.0769/mi	$76.90
64,001-66,000 lb	$0.0798/mi	$79.80
66,001-68,000 lb	$0.0827/mi	$82.70
68,001-70,000 lb	$0.0856/mi	$85.60
70,001-72,000 lb	$0.0885/mi	$88.50
72,001-74,000 lb	$0.0913/mi	$91.30
74,001-76,000 lb	$0.0942/mi	$94.20
76,001-78,000 lb	$0.0971/mi	$97.10
78,001-80,000 lb	$0.1000/mi	$100.00
80,001 lb and over	$0.1750/mi	$175.00

Sources

CT fee rates and eligibility: Connecticut Department of Revenue Services, Highway Use Fee Information — https://portal.ct.gov/drs/businesses/highway-use-fee/huf, read on 2026-09-30
Due date: CT DRS, Highway Use Fee Information — https://portal.ct.gov/drs/businesses/highway-use-fee/huf, read on 2026-09-30

Frequently asked questions

What are the Connecticut highway use fee rates?: 28 bands by gross weight: 2.5 cents a mile at 26,000-28,000 lb, rising about 0.29 cents per 2,000 lb to 10 cents at 78,001-80,000 lb, and 17.5 cents above 80,000 lb.
Who needs a CT highway use fee permit?: Anyone who operates on Connecticut highways a vehicle of 26,000 lb or more gross weight in FHWA classes 8 to 13; register on myconneCT for a Highway Use Fee permit.
How often is the CT highway use fee filed?: Quarterly, from the October to December 2023 quarter on; the return is due the last day of the month after the quarter.
Is the highway use fee the same as IFTA?: No. It is a separate Connecticut fee with its own return on myconneCT; IFTA fuel tax is filed with your base jurisdiction.