States corporate income tax rates range from 0.0% to 12%. 

 These five(5) States have no corproate tax rates [and also no Personal Tax Rate]:

- Nevada - 0.0%
- South Dakota - 0.0%
- Texas - 0.0%
- Washington - 0.0%
- Wyoming - 0.0%

Iowa has the highest corporate tax rate at 12%.

The top 10 states with the highest corporate tax rates are:

- Iowa - 12%
- California - 10..84%

- Pennsylvania - 9.9%
- Rhode Island 9.9%

- Minnesota - 9.8%
- Alaska - 9.4%
- New Jersey - 9%
- Maine - 8.93%
- Delaware - 8.7%
- Vermont - 8.5%

In addition to State corporate tax rates some citites also have corproate tax rates.  See also Cities with Corporate Income Tax Rates.
State Corporate Income Tax Rates

 

State 2018
%
2019
%
Bracket Remarks
AL 6.5 6.5   The return is due on the 15th day of the third month following the end of the tax period.
AK 0 0 $0.00-$25,000 Payment of the Alaska tax must be made on or before the 15th day of the third month after the close of the tax year. The payment due date cannot be extended.
9.4 9.4 $222,000-over
AZ 4.9 4.9   The return is due by the 15th day of the fourth month following the close of the taxable year for regular ("C") corporations. For "S" corporations, taxes imposed are due on the 15th day of the third month following the close of the taxable year.
AR [FAQ] 1 1 $0.00 Arkansas corporation income tax returns to be filed on or before the 15th day of the third month after the close of the corporation’s tax year.
2 2 $3,001
3 3 $6,001
4 5 $11,001
5 6 $25,001
6.5 6.5 $100,001
CA 8.84 8.84   This rate is for corporations other than banks and financials.

S Corporation = 1.5%
10.84 10.84   This rate is for Banks and Financials.

S Corp [Banks/Financials] = 3.5%
CO 4.63 4.63   The payments will be due for fiscal year filers on the 15th day of the fourth, sixth, ninth and twelfth month of the tax year. If the due date falls on a Saturday, Sunday or state holiday, payment is due on the next business day.
Estimated tax payments are due in four equal installments on
-April 15 (first calendar quarter)
-June 15 (second calendar quarter)
-September 15 (third calendar quarter)
-December 15 (fourth calendar quarter)
CT 7.5 7.5   If your corporation’s tax liability, after credits, will exceed $1,000, you must make quarterly estimated payments. Estimated payments are due on the 15th day of the 3rd, 6th, 9th and 12th months of the year.

There is a biennial (every other year) tax of $250
DE 8.7 8.7   Delaware corporate income tax returns are due in the case of a calendar year taxpayer, on or before April 1 of the following year. In the case of a fiscal year taxpayer, the return is due on or before the first day of the fourth month following the close of the fiscal year.
FL 5.5 5.5   The due date is based on the corporation's tax year.
GA 6 6   All corporations doing business in Georgia for the first time must file an initial net worth return on or before the fifteenth day of the third calendar month after incorporation or qualification in the state (for C corporations, 15th day of the fourth month for net worth years beginning on or after January 1, 2017.
HI [FAQ] 4.4 4.4 $0.00 Income tax returns and tax payments are due on the 20th day of 4th month after the close of the tax year. Estimated income tax payments are due on the 20th of April, June, September, and January for calendar year taxpayers. For fiscal year taxpayers, estimated income tax payments are due on the 20th day of the 4th, 6th, and 9th months of the fiscal year, and on the 20th day of the 1st month after the close of the fiscal year.
5.4 5.4 $25,000
6.4 6.4 $100,000
ID 7.4 6.925   If the tax is less than $20, a minimum income tax payment of $20 is required.
IL 7 7    New law passed in July 2017 raised the rate to 7%.  a 33% increase. 
IN 5.75 5.75   1 Jul, 2017: 6.0%
1 Jul 2018: 5.75%
1 Jul 2019: 5.5%
1 Jul 2020: 5.25%
1 Jul 2021: 4.9%

Effective Jan. 1, 2013, ALL businesses in Indiana must file and pay their sales and withholding taxes electronically.
IA 6 6 $0.00 Corporation tax returns must be filed by the last day of the 4th month after the close of the tax year.
8 8 $25,000
10 10 $100,000
12 12 $250,000
KS 7 7 $50,000-over 4% + 3% surtax
KY 4 5 $0.00 Paying Estimated Taxes
5 $50,000
6 $100,000
LA 4 4 $0.00 1st day following last day of taxable year; 15th day of 4th, 6th, 9th, and 12th months of taxable year.
5 5 $25,000
6 6 $50,000
7 7 $100,000
8 8 $200,000-over
ME 3.5 3.5 $0.00 The Maine corporate income tax return (Form 1120ME) is due on the same date as your federal corporate income tax return (the fifteenth day of the third month after the end of the tax year), without regard to an extension to file.
7.93 7.93 $25,000
8.33 8.33 $75,000
8.93 8.93 $250,000
MD 8.25 8.25   Every corporation that reasonably expects its Maryland taxable income to develop a tax in excess of $1,000 for the tax year or period must make estimated income tax payments.
MA 8 8   On or before the 15th day of the third month after close of taxable year.

S C orporations: 1.93%
MI 6 6   Taxpayers with less than $350,000 in allocated or apportioned gross receipts and/or less than or equal to $100 in annual liability are not required to file or pay the Corporate Income Tax (CIT).
MN 9.8 9.8   All corporations (both S and C corporations), partnerships, and LLCs must pay a minimum fee based on the sum of their Minnesota property, payroll, and sales.
MS 3 3 $5,000.00 Every corporation, domesticated or qualified to do business in Mississippi must file a return even if the corporation is inactive or not engaged in business. ​
4 4 $5,000-$10,000
5 5 above $10,000
MO 6.25 6.25   The due date for most corporations is the 15th day of the fourth month after the close of the taxable year.
MT 6.75 6.75   There is a minimum tax of $50. However, if a corporation has no property, payroll or sales in Montana during the tax period, it is excluded from the minimum payment.

Corporations making a "water's edge" election are required to pay tax at a rate of 7%.

Due Dates:
Calendar Year: May 15

Fiscal Year: The 15th day of the 5th month following the fiscal year end.
NE 5.58 5.58 $0-$100,000 The due date for the Nebraska corporation income tax return is the 15th day of the third month following the close of the taxable year.
7.81 7.81 $101,000-over
NV 0     Also, no State personal tax rate.
NH 8.2 7.9   1 Jan 2017: 8.2
1 Jan 2019: 7.9
1 Jan 2020: 7.7
1 Jan 2022: 7.5


Organizations with $50,000 or less of gross receipts from all their activities are not required to file a return.
NJ 6.5 6.5 $0-$50,000 The due date for the filing of a CBT-100 is the 15th day of the fourth month following the ending month of the accounting period.
7.5 7.5 $100,000
9 9 $101,000-over
NM 4.8 4.8 $0-$500,000 The return is due on the 15th day of the third month following the close of the tax year.


After 1 Jan 2018:
4.8% - $0-$500,000
5.9% - $500,000-over
6.2 4.8  $0-$500,000
5.9  $500,000-over
NY 0.0 - 6.5 6.5   Due on or before March 15 (Calendar year); Within 2 ½ months after end of reporting period (Fiscal year).

Qualified Small Business: 6.5% ($290,000 or less);
Qualified emerging technology companies: 5.7%
NC 3 3   1/1/2015: 5%
1/1/2016: 4%
1/1/2017: 3%

The rate will be further reduced to 4% during the 2016 tax year and to 3% for post-2016 tax years provided that specified revenue growth targets are reached.
ND 1.41 1.41 $0.00 The return is due on the 15th day of the fourth month following the close of the tax year.
3.55 3.55 $25,000
4.31 4.31 $50,000
OH .26 .26 $150,000 or more .26 Gross Receipt Tax on businesses that earn $150,000 or more.  Known as the Commercial Activity Tax (CAT).  Only applicable to taxable gross receipts (i.e. gross receipts sourced to ohio).
OK 6 6   Corporate returns are due on the 15th day of the third month following the close of the taxable year.
OR 6.6 6.6 $0.00 Oregon corporation returns are due the 15th of the month following the due date of the corresponding federal return. You must make quarterly estimated tax payments if you expect to owe tax of $500 or more with your return.
7.6 7.6 $10,000,000
PA 9.99 9.99   A Corporate Tax Report (RCT-101) is due annually on April 15 of the year following the tax year for which the report is submitted for calendar year reporting corporations, or 30 days after the federal due date for corporations reporting to the Federal Government on a fiscal year basis.
RI 7 0.99%-9.59%   The annual corporate minimum tax remains at $500.
SC 5 5   S Corporation: 5%

File annually on or before the 15th day of the third month after the close of the taxable year except for the initial and/or final return.
SD 0 0   Also, no State personal tax rate.
TN 6.5 6.5   Your business tax return is due on the 15th day of the fourth month following the close of your books and records.

The business tax rates vary, depending on your classification and whether you are a retailer or a wholesaler. However, every taxpayer must pay at least a minimum tax of $22.
TX 0 0   Also, no State personal tax rate.
UT 5 5   5% of taxable income or $100, whichever is greater.
VT 6 6 $0.00 Any corporation anticipating a Vermont tax liability over $500 must make estimated payments of the 15th day of the 4th, 6th, 9th, and 12th months of the corporation’s taxable year.
7 7 $10,000
8.5 8.5 $25,000
VA 6 6   A domestic corporation must file a Virginia income tax return each year, even if it has no income to report. Beginning January 1, 2013 for Corporations (Form 500 filers), all estimated tax payments and extension payments must be paid electronically. Beginning with taxable year 2005, Virginia law provides an automatic filing extension of six months for the filing of income tax returns. There is no extension of time granted for payment of taxes due.
WA 0     Also, no State personal tax rate.
WV 6.5 6.5   Corporation which can reasonably expect its West Virginia taxable income to be in excess of $10,000 (which equals a tax liability after tax credits in excess of $650.00) and are due in four equal installments on the 15th day of the fourth, sixth, ninth, and twelfth months of the tax year.
WI 7.9 7.9   Franchise tax is applied to domestic corporations at a rate of 7.9%. Income tax is applied to foreign corporations at a rate of 7.9%.
WY 0 0   Also, no State personal tax rate.
D.C. 8.25 8.25   -$250 minimum tax, if DC gross receipts are $1 million or less

-$1,000 minimum tax, if DC gross receipts are more than $1 million