Purpose:This publication provides a brief description of certain taxes applicable to companies doing business in Connecticut. It is not an all-inclusive list, but it contains those taxes of interest to most businesses and, where appropriate, identifies the state agencies to contact for information. For more information about doing business in Connecticut, see Informational Publication 2006(11), Getting Started in Business: Understanding Connecticut Taxes.
Effective Date: Upon issuance.
Registering for Business Taxes
Use Form REG-1, Business Taxes Registration Application, to register a business for those taxes administered by the Department of Revenue Services (DRS) including corporation business tax, business entity tax, sales and use taxes, income tax withholding, and motor vehicle fuels tax. See information on obtaining forms and publications and contacting DRS for more information.
Corporation Business Tax
Corporations pay the corporation business tax for the privilege of carrying on business in a corporate capacity in Connecticut. Corporations calculate their tax under two alternative methods, tax measured by net income and the minimum tax, and remit the higher tax. If the tax measured by net income is less than $250, the corporation pays the minimum tax, which is never less than $250.
The tax measured by net income
Federal net income is modified by certain additions and subtractions to compute Connecticut net income. Multistate corporations multiply their Connecticut net income by the appropriate apportionment factor. The Connecticut net income, or apportioned Connecticut net income for multistate corporations, is taxed at 7.5%.
The minimum tax
The Connecticut minimum tax base is:
Multistate corporations multiply their Connecticut minimum tax base by an apportionment fraction that is the average of the intangible personal property and tangible personal property ratios.
The Connecticut minimum tax base, or apportioned Connecticut minimum tax base for multistate corporations, is taxed at a rate of 3.1 mils ($0.0031) per dollar. The minimum tax cannot be more than $1,000,000 nor be less than $250.
Estimated corporation business tax
A corporation whose estimated current year’s tax exceeds $1,000 must make estimated tax payments. The chart below shows the required estimated payments for all filers and the due dates for calendar year filers.
1st Installment - March 15: 30% of prior year’s tax (without regard to tax credits) or 27% of current year’s tax
2nd Installment - June 15: 40% of prior year’s tax (without regard to tax credits) or 36% of current year’s tax (A total of 70% of your required annual payment should be paid by this date.)
3rd Installment - September 15: 10% of prior year’s tax (without regard to tax credits) or 9% of current year’s tax (A total of 80% of your required annual payment should be paid by this date.)
4th Installment - December 15: 20% of prior year’s tax (without regard to tax credits) or 18% of current year’s tax (A total of 100% of your required annual payment should be paid by this date.)
See Paperless Filing/Payment Methods below.
C corporations and other business entities that elect to be taxed as a corporation must file Form CT-1120, Corporation Business Tax Return, on or before the first day of the fourth month following the close of the company’s income year (April 1 for calendar year filers).
S corporations are not subject to the corporation business tax. For federal and Connecticut tax purposes, S corporations are treated as pass-through entities. Except as noted below, S corporation shareholders who are individuals, estates, or trusts report their pro rata share of S corporation income on Form CT-1040, Connecticut Resident Income Tax Return, Form CT-1040NR/PY, Connecticut Nonresident or Part-Year Resident Income Tax Return, or Form CT-1041, Connecticut Income Tax Return for Trusts and Estates.
Additionally, the S corporation must file Form CT-1065/CT-1120SI, Connecticut Composite Income Tax Return, on or before the fifteenth day of the fourth month following the close of its taxable year. S corporations and other pass-through entities may be required to make a composite income tax payment on behalf of their nonresident noncorporate members or their members that are pass-through entities. See Informational Publication 2006(22), Connecticut Income Tax Changes Affecting Pass-Through Entities, for more information. S corporations generally are subject to the business entity tax.
Corporation business tax credits
Corporation business tax credits may be available to new and existing businesses. Informational Publication 2006(15), Guide to Connecticut Business Tax Credits, contains detailed summaries of available credits. You may download this publication from the DRS website at www.ct.gov/DRS, or to order the publication, send a self-addressed 9" x 12" envelope with $1.99 postage affixed to:
Business Entity Tax
There is an annual business entity tax (BET) of $250. The BET applies to the following domestic and foreign entities:
Each foreign entity that is required to file a certificate of authority or registration with the Secretary of the State is liable for the BET whether or not the entity has filed a certificate of authority or registration, as the case may be, with the Secretary of the State. See Special Notice 2006(12), 2006 Legislative Changes Affecting the Business Entity Tax, and Informational Publication 2006(21), Q & A on Business Entity Tax.
See Paperless Filing/Payment Methods below.
Sales and Use Taxes
Retail sales or leases of tangible personal property and certain services are subject to sales and use taxes at a 6% rate except as noted below. The room occupancy tax rate of 12% applies to the occupancy of a room in a hotel or lodging house for a period of 30 consecutive days or less.
Use tax generally applies to taxable tangible personal property or services on which the seller did not impose Connecticut sales tax. A business must report purchases subject to the use tax on Form OS-114, Sales and Use Tax Return, for the period in which the purchases are made. If an item purchased in another state already was subject to that state’s sales tax, credit for the tax is generally given when computing Connecticut use tax.
Certain services subject to tax
For a complete list of taxable services, refer to Conn. Gen. Stat. §12-407(a)(2) and (37) or contact the DRS Taxpayer Services Division. Although not an exhaustive list, the following are commonly provided taxable services:
Sales of services between the following affiliated business entities are exempt from sales and use taxes: corporations, trusts, estates, partnerships, limited partnerships, limited liability partnerships, limited liability companies, single member limited liability companies, sole proprietorships, and nonstock corporations. To qualify, the business entities must be affiliated in such a manner that:
Note that a business entity cannot purchase services on resale when the services are purchased for resale to another affiliate.
This topic is covered in depth in Informational Publication 2006(35), Building Contractors’ Guide to Sales and Use Taxes. You may download this publication from the DRS website at www.ct.gov/DRS, or to order the publication, send a self-addressed 9" x 12" envelope with $1.99 in postage affixed to:
Sales and use taxes are imposed on most items purchased by Connecticut manufacturers. However, there are certain exemptions:
Also, under the Manufacturing Recovery Act, which is available to manufacturers, processors, and fabricators, 50% of the purchase price of materials, tools, fuels, machinery, and equipment is exempt from sales and use taxes.
Informational Publication 99(18), Sales and Use Taxes Guide for Manufacturers, Fabricators and Processors, includes information about tax exemptions and other issues of interest to manufacturers. You may download this publication from the DRS website at www.ct.gov/DRS, or to order the publication, send a self-addressed 9" x 12" envelope with $1.99 in postage affixed to:
Connecticut retailers that sell taxable goods or services must collect sales tax on their sales except when a properly completed Connecticut Sales and Use Tax Resale Certificate or the Uniform Sales and Use Tax Certificate — Multijurisdiction is taken in good faith from the purchaser or the sale qualifies for exemption. Retailers must remit sales and use taxes on a quarterly basis to the state except where the tax collected by the retailer for the 12-month period ended on the preceding June 30 was more than $4,000, in which event the tax must be remitted monthly. Annual filing is allowed for businesses whose total annual liability for sales and use taxes is less than $1,000.
Taxpayers whose prior year liability for sales and use tax or withholding tax exceeded $10,000 for the 12-month period ending the preceding June 30 for monthly and quarterly tax liabilities or for the preceding taxable year for annual tax liabilities and who are notified by DRS to pay that tax by electronic funds transfer (EFT) must pay the tax by EFT.
See Paperless Filing/Payment Methods below.
Certain sales are exempt from tax including, but not limited to sales of food (other than meals), clothing under $50, and prescription and certain nonprescription drugs.
Income Tax Withholding
An employer is an employer for Connecticut income tax withholding purposes if that employer:
Employers must withhold Connecticut income tax from wages of resident employees and from nonresident employees who work in Connecticut. Quarterly reconciliations are due on the last day of the month following the end of the calendar quarter. The annual reconciliation for the preceding year is due on the last day of February. See Informational Publication 2007(1), Connecticut Employer’s Tax Guide - Circular CT, for more information.
See Paperless Filing/Payment Methods below.
Motor Vehicle Fuels Tax
An excise tax is imposed on motor vehicle fuels used to propel motor vehicles. The tax rate on gasoline and gasohol is 25¢ per gallon and the tax rate on diesel fuel is 26¢ per gallon.
Motor Carrier Road Tax
A tax is imposed on the use of motor fuels by motor carriers operating qualified motor vehicles in Connecticut. The rate is equivalent to the Connecticut motor vehicle fuels tax rate. A qualified motor vehicle is a motor vehicle used, designed, or maintained for transportation of persons or property and:
International Fuel Tax Agreement (IFTA)
Connecticut is a member of the International Fuel Tax Agreement (IFTA). IFTA is an agreement among jurisdictions (states of the United States and Canadian provinces) to simplify the reporting of the fuel use taxes by interstate carriers. All 48 contiguous states are members of IFTA, as well as 10 Canadian provinces.
Each motor carrier whose base jurisdiction is Connecticut and which operates in at least one other IFTA jurisdiction must obtain a Connecticut IFTA license and decals. On a motor carrier’s Connecticut IFTA quarterly returns, the motor carrier reports its motor fuel use tax liability to Connecticut and to other IFTA jurisdictions. For carriers based in another jurisdiction that is also an IFTA member, the IFTA license and decals from that jurisdiction satisfy Connecticut fuel use tax registration requirements. Qualified motor vehicles based outside Connecticut in a non-IFTA jurisdiction or that operate only in Connecticut must obtain Connecticut motor carrier road tax decals. Call the DRS Registration Unit at 860-297-4753 to obtain an application.
Petroleum Products Gross Earnings Tax
A tax is imposed on companies engaged in the refining or distribution, or both, of petroleum products on their gross earnings from the first sale within Connecticut of petroleum products.
Other State Agencies
Other state or municipal agencies administer the following taxes and fees: corporation franchise tax, unemployment compensation tax, property tax, and motor vehicle fees.
Corporation Franchise Tax
The Office of the Secretary of the State (OSS) collects a franchise tax from Connecticut corporations. For more information, visit the OSS website at www.sots.ct.gov or call 860-509-6003.
A domestic corporation must pay a franchise tax to the Secretary of the State at the time of incorporation and at the time of any increase in the number of shares of authorized capital stock. Corporations must also file annual reports on or before the last business day of the month in which the anniversary date of incorporation occurs.
A corporation organized outside Connecticut may obtain a certificate of authority to transact business in Connecticut by filing an application with the Secretary of the State and appointing an agent to accept service of process. Applications are available from the Secretary of the State and must be accompanied by a filing fee and a certificate of good standing from the corporation’s state of incorporation. Foreign corporations must file annual reports on or before the last business day of the month in which the anniversary date of the authorization to transact business occurs.
Unemployment Compensation Tax
The Department of Labor (DOL) administers the unemployment compensation tax. For information and registration forms, visit the Connecticut DOL website at www.ctdol.state.ct.us or call the Employer Status Unit at 860-263-6550.
Unemployment Compensation Act
Employers engaged in covered activities are subject to the Unemployment Compensation Act (Act) if:
Agricultural employers are subject to the Act if:
Domestic employers are subject to the Act if they paid cash wages totaling $1,000 or more during any calendar quarter of the current or preceding calendar year.
Unemployment Compensation Fund
The Unemployment Compensation Fund is financed through a benefit ratio system. For employers who qualify to be experience-rated (those who have been chargeable with benefits for at least one year ending June 30), taxes are based on:
The rates are recalculated annually for qualified employers. An employer’s charged tax rate is the ratio of charges during the applicable experience period to the taxable payroll for the same period. The fund solvency tax rate may increase an employer’s total contribution rate depending on the solvency of the unemployment compensation fund. Calculated annually, it applies uniformly to all employers who qualify for experience rating.
An employer who has not been subject to the Act for a sufficient period of time to be experience-rated pays contributions at a rate that is the higher of 1% of taxable wages or the Connecticut five-year benefit cost rate. An employer’s taxable wages consists of the sum of employee’s wages not in excess of $15,000.
Maximum unemployment compensation rate
The maximum unemployment compensation rate is revised annually as of the first Sunday in October. However, the maximum benefit cannot exceed 60% of the average weekly wage of manufacturing production and related workers in Connecticut.
The property tax is administered by each Connecticut municipality. Write to: Intergovernmental Policy Division, Office of Policy and Management (OPM), 450 Capitol Avenue, Mail Stop 54 MFS, Hartford CT 06106-1308, or visit the OPM website at www.opm.state.ct.us for information. Specific information may also be obtained from the city or town assessor where the business is located.
Each company pays an ad valorem property tax to the community in which it has real or personal property. Manufacturing inventories of finished goods and goods in process are exempt as are mercantile inventories.
October 1 is the annual assessment date. Not later than November 1, each company must file a declaration of its personal property with the local assessor. Personal property and motor vehicles are revalued annually. Real property is revalued every four years. Increases in assessed values of real property resulting from revaluation may be phased in for up to four years at the community’s option.
Any municipality with a population in excess of 35,000 may establish a special service district to construct, own, operate, and maintain public improvements and to provide within the district the services a municipality is authorized to provide except elementary and secondary education.
Newly acquired manufacturing machinery and equipment (including property used in the production of motion pictures, videos, and sound recordings) may be exempt from the property tax for a five-year period. New commercial motor vehicles used exclusively for the interstate or intrastate transport of freight for hire may also be exempt for a five-year period. Both exemptions must be claimed annually. Exemption applications and personal property declaration forms are available from the local assessor.
Connecticut has a free-port law that permits goods shipped in from out-of-state to remain free of local property taxes while stored in a public warehouse not owned by the seller or buyer if the goods remain in their original packages.
Motor Vehicle Registration Fees
There is a two-year registration fee for private passenger cars used for business purposes. Upon renewal, there is an additional Clean Air Act fee for all classes of motor vehicles. Driver licenses are renewed every six years and commercial driver licenses are renewed every four years.
Annual registration fees for commercial motor vehicles are based on the vehicle gross weight. Both motorized units (tractors) and trailers must be registered. There are fixed annual fees for saw rigs, spray rigs, and well drillers. Permanently mounted cranes require a fee by gross weight. There is a registration fee per year (not prorated) for heavy duty vehicles (55,000 lbs. gross weight and over). Overweight vehicles require a special permit from the Connecticut Department of Transportation.
Specific registration classes exist for taxis, liveries, and buses, each with special requirements and fees.
For fee information, visit the Department of Motor Vehicles website at www.ct.gov/dmv or call 1-800-842-8222.
Effect on Other Documents: This Informational Publication modifies and supersedes Informational Publication 2005(26), Business Taxes, which may no longer be relied upon on after the issuance date of this publication.
Effect of This Document: An Informational Publication addresses frequently asked questions about a current position, policy, or practice, usually in a less technical question and answer format.
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