Corporate Statistics of Income Reports

Data Tables: 

The 2023 Corporate SOI data tables summarize C Corporation income and tax data by business activity (Tables 1, 3, and 4), by size of Colorado taxable income (Tables 1 and 2), by size of federal taxable income (Table 3), and by industry (Table 4). The variables summarized in Tables 1 through 4 include the number of returns, number of taxpayers, federal taxable income, Colorado taxable income, Colorado gross tax, and Colorado net tax. In Tables 1, 3, and 4, returns are categorized as having business activity only in Colorado or having business activity within and outside of Colorado. 

2023 Data Folder - Use this link to access all tables via Google Drive

• Table 1. Income and Tax Data by Business Activity and Size of Colorado Taxable Income
• Table 2. Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Income and Tax Data by Business Activity and Size of Federal Taxable Income
• Table 4. Income and Tax Data by Business Activity and Industry

Methodology:

This report summarizes data from state income tax returns filed by C corporations for income tax year 2023. Income tax year is defined by the year that a taxing period began. Many corporations file using a fiscal-year taxing period, meaning a tax year that begins in a month other than January.

Data for 2023 Colorado income tax returns were extracted on August 21, 2025, reflecting a snapshot of the returns at that time. The data often reflects initial submissions and may not include subsequent corrections or amended returns. All tax return data is subject to change.

To ensure taxpayer confidentiality, disclosure analysis was performed on each variable for each table. The Department only releases aggregated state data if no single taxpayer represents over 80% of the total and if there are at least three taxpayers per group. Suppressed values due to confidentiality are marked "NR" in the data tables.

Supplemental Information:

• Data Sources (Excel)

Narrative

•  2022 Corporate SOI Narrative (PDF) includes an introduction, highlights, and methodology in a PDF 

Data Tables:

The 2022 Corporate SOI tables summarize key statistics on income and tax data by Colorado taxable income group, federal taxable income group, or industry. The variables summarized in Tables 1 through 10 include the number of returns, federal taxable income, Colorado taxable income, Colorado gross tax, and Colorado net tax. Some tables aggregate data from all C corporations (Tables 1, 2, 5, and 8), whereas others break out data by corporations that conduct business only in Colorado (Tables 3, 6, and 9) or by corporations that conduct business within and outside of Colorado (Tables 4, 7, and 10). The data is summarized by Colorado taxable income group in Tables 1 through 4, by federal taxable income group in Tables 5 through 7, and by industry in Tables 8 through 10.

• Table 1. All Corporations: Income and Tax Data by Size of Colorado Taxable Income
• Table 2. All Corporations: Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 4. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 5. All Corporations: Income and Tax Data by Size of Federal Taxable Income
• Table 6. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 7. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 8. All Corporations: Income and Tax Data by Industry
• Table 9. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Industry
• Table 10. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Industry

Supplemental Information:

• Data Sources (Excel)

Highlights and Selected Data Tables

• 2021 Corporate SOI: Highlights and Selected Tables (PDF) includes an introduction, highlights, and selected data tables in a PDF

Data Tables:

The 2021 Corporate SOI tables summarize key statistics on income and tax data by Colorado taxable income group, federal taxable income group, or industry. The variables summarized in Tables 1 through 10 include the number of returns, federal taxable income, Colorado taxable income, Colorado gross tax, and Colorado net tax. Some tables aggregate data from all C corporations (Tables 1, 2, 5, 8, and 13), whereas others break out data by corporations that conduct business only in Colorado (Tables 3, 6, 9, and 11) or by corporations that conduct business within and outside of Colorado (Tables 4, 7, 10, and 12). The data is summarized by Colorado taxable income group in Tables 1 through 4 and 11 through 13, by federal taxable income group in Tables 5 through 7, and by industry in Tables 8 through 10. Colorado additions and subtractions claimed by corporations are summarized in Tables 11 and 12. Colorado income tax credits claimed are summarized in Table 13.

• Table 1. All Corporations: Income and Tax Data by Size of Colorado Taxable Income
• Table 2. All Corporations: Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 4. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 5. All Corporations: Income and Tax Data by Size of Federal Taxable Income
• Table 6. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 7. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 8. All Corporations: Income and Tax Data by Industry
• Table 9. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Industry
• Table 10. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Industry
• Table 11. Corporations that Conduct Business Only in Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 12. Corporations that Conduct Business Within and Outside of Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 13. All Corporations: Colorado Income Tax Credits by Size of Colorado Taxable Income

Supplemental Information:

• Methodology
• Data Sources

Corporate SOI is Now Published Annually!

Narrative:

• 2020 Corporate SOI Narrative (PDF) includes introduction, infographic, methodology, and data sources

Data Tables:

The 2020 Corporate SOI tables summarize key statistics on income and tax data by Colorado taxable income group, federal taxable income group, or industry. The variables summarized in Tables 1 through 10 include the number of returns, federal taxable income, Colorado taxable income, Colorado gross tax, and Colorado net tax. Some tables aggregate data from all C corporations (Tables 1, 2, 5, 8, and 13), whereas others break out data by corporations that conduct business only in Colorado (Tables 3, 6, 9, and 11) or by corporations that conduct business within and outside of Colorado (Tables 4, 7, 10, and 12). The data is summarized by Colorado taxable income group in Tables 1 through 4 and 11through 13, by federal taxable income group in Tables 5 through 7, and by industry in Tables 8 through 10. Colorado additions and subtractions claimed by corporations are summarized in Tables 11 and 12. Colorado income tax credits claimed are summarized in Table 13.

• Table 1. All Corporations: Income and Tax Data by Size of Colorado Taxable Income
• Table 2. All Corporations: Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 4. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 5. All Corporations: Income and Tax Data by Size of Federal Taxable Income
• Table 6. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 7. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 8. All Corporations: Income and Tax Data by Industry
• Table 9. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Industry
• Table 10. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Industry
• Table 11. Corporations that Conduct Business Only in Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 12. Corporations that Conduct Business Within and Outside of Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 13. All Corporations: Colorado Income Tax Credits by Size of Colorado Taxable Income

Supplemental Information:

• 2020 Corporate SOI Narrative (PDF) includes introduction, infographic, methodology, and data sources
• Data Sources (Excel)

Enhancements and Changes Since the Previous Report:

• Developed new tables that show Corporate income tax data by federal taxable income

Full Report:

• 2019 Corporate SOI Report (PDF) includes the narrative, infographics, tables, and supplemental information

Data Tables:

• Table 1. All Corporations: Income and Tax Data by Size of Colorado Taxable Income
• Table 2. All Corporations: Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 4. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Colorado Taxable Income
• NEW! Table 5. All Corporations: Income and Tax Data by Size of Federal Taxable Income
• NEW! Table 6. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Federal Taxable Income
• NEW! Table 7. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Federal Taxable Income
• Table 8. All Corporations: Income and Tax Data by Industry
• Table 9. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Industry
• Table 10. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Industry
• Table 11. Corporations that Conduct Business Only in Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 12. Corporations that Conduct Business Within and Outside of Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 13. All Corporations: Colorado Income Tax Credits by Size of Colorado Taxable Income

Enhancements and Changes Since the Previous Report:

• Added three new tables:
  • Table 14 - Business Income by Industry
  • Table 19 - Selected Federal Tax Credits by Size of Federal AGI
  • Table 26 - Colorado Income Tax Prepayments by Size of Federal AGI
• Significant changes made to three tables:
  • Table 17 - This table no longer summarizes personal exemptions (see 2017 Table 18), but now includes qualified business income deductions. These modifications were made due to federal tax return changes.
  • Table 20 and Table 21 - Five Colorado regions are now summarized instead of the 14 planning regions summarized in previous SOI reports.
• Formatting changes:
  • All values are now rounded to the nearest dollar.
  • Previous reports rounded summed totals to the nearest thousand, which will affect comparisons to prior year data.

Narrative and Charts:

• 2018 Individual SOI Narrative and Charts (PDF)(opens in new window)
  • Includes an introduction, highlights, charts, and methodology
  • Features insights into major changes that started tax year 2018 due to the federal Tax Cuts and Jobs Act of 2017 (TCJA) (NEW!)
  • TCJA Overview and Impacts section includes charts and tables that compare 2018 and 2017 to demonstrate the impacts the TCJA had on Colorado income tax filers (NEW!) 

Data Tables: 

The 2018 Individual SOI tables summarize key statistics on income and tax data by income group, including the number of returns, federal adjusted gross income (AGI), federal taxable income, Colorado gross tax, Colorado net tax, and federal tax. The aggregate data is split into various groupings, such as filing status, age, and location. Four tables (Tables 7, 8, 11, and 12) break out return data by age group. Information on the composition of Colorado households can be found by examining filing statuses (Tables 3, 4, 9, and 10). Detailed data on sources of income, business income by industry, and adjustments to income are reported in Tables 13, 14, and 15. Reductions from federal income such as standard, itemized, and qualified business income deductions are presented in Tables 16, 17, and 18. Selected federal tax credits are summarized in table 19. Geographic (county or region) data is presented in Tables 20 through 23. Data specific to the calculation of Colorado taxable income and tax due — including additions, subtractions, tax prepayments, tax credits, and voluntary contributions — are the focus of Tables 24 through 28.

• Table 1.(opens in new window) Income and Tax Data by Size of Federal AGI
• Table 2.(opens in new window) Income and Tax Data by Size of Federal AGI in $10,000 Increments
• Table 3.(opens in new window) Income and Tax Data for Single Colorado Returns by Size of Federal AGI
• Table 4.(opens in new window) Income and Tax Data for Joint Colorado Returns by Size of Federal AGI
• Table 5.(opens in new window) Income and Tax Data for Taxable Returns by Size of Federal AGI
• Table 6.(opens in new window) Income and Tax Data for Non-Taxable Returns by Size of Federal AGI
• Table 7.(opens in new window) Income and Tax Data for Filers Under 65 by Size of Federal AGI
• Table 8.(opens in new window) Income and Tax Data for Filers 65 and Older by Size of Federal AGI
• Table 9.(opens in new window) Federal AGI by Size of Federal AGI and Federal Filing Status
• Table 10.(opens in new window) Colorado Net Tax by Size of Federal AGI and Federal Filing Status
• Table 11.(opens in new window) Federal AGI by Size of Federal AGI and Age Group
• Table 12.(opens in new window) Colorado Net Tax by Size of Federal AGI and Age Group
• Table 13.(opens in new window) Source of Income by Size of Federal AGI
• Table 14.(opens in new window) Business Income by Industry (NEW!)
• Table 15.(opens in new window) Adjustments to Income by Size of Federal AGI
• Table 16.(opens in new window) Income and Tax Data by Size of Federal AGI and Standard/Itemized Deduction Returns
• Table 17.(opens in new window) Standard, Itemized, and Qualified Business Income Deductions by Size of Federal AGI
• Table 18.(opens in new window) Itemized Deductions by Size of Federal AGI
• Table 19.(opens in new window) Selected Federal Tax Credits by Size of Federal AGI (NEW!)
• Table 20.(opens in new window) Income and Tax Data by Region
• Table 21.(opens in new window) Income and Tax Data for Regions by Size of Federal AGI
• Table 22.(opens in new window) Income and Tax Data by County
• Table 23.(opens in new window) Income and Tax Data for Major Counties by Size of Federal AGI
• Table 24.(opens in new window) Colorado Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 24 Supplement.(opens in new window) Colorado Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
  • This supplemental table to the Individual SOI summarizes all of the returns that were included in SOI and all Colorado income tax returns that were excluded from the SOI data set– either because the returns were not full-year residents or because they did not match up to an IRS return in the data merging process.
  • This information is provided to help the data users apply their own weighting methodologies if needed.
• Table 25.(opens in new window) Colorado Additions and Subtractions by Size of Federal AGI
• Table 26.(opens in new window) Colorado Income Tax Prepayments by Size of Federal AGI (NEW!)
• Table 27.(opens in new window) Colorado Tax Credits by Size of Federal AGI
• Table 28.(opens in new window) Colorado Voluntary Contributions by Size of Federal AGI

Supplemental Information:

• Data Sources Excel(opens in new window)
• 2018 vs. 2017 Table Crosswalk Excel

Enhancements and Changes Since the Previous Report:

• Added short descriptions to the tables to help make the data more accessible
• Developed new tables that show Corporate income tax data by industry
• Split the Colorado Additions and Subtractions by Size of Colorado Taxable Income table into two separate tables based on where the corporations conduct business
• Added narrative and infographics in the full report to highlight and elaborate on selected income tax data

Full Report:

• 2017 Corporate SOI Report (PDF) includes the narrative (NEW!), infographics (NEW!), tables, and supplemental information

Data Tables:

• Table 1. All Corporations: Income and Tax Data by Size of Colorado Taxable Income
• Table 2. All Corporations: Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Size of Colorado Taxable Income
• Table 4. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Size of Colorado Taxable Income
• NEW! Table 5. All Corporations: Income and Tax Data by Industry
• NEW! Table 6. Corporations that Conduct Business Only in Colorado: Income and Tax Data by Industry
• NEW! Table 7. Corporations that Conduct Business Within and Outside of Colorado: Income and Tax Data by Industry
• NEW! Table 8. Corporations that Conduct Business Only in Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• NEW! Table 9. Corporations that Conduct Business Within and Outside of Colorado: Colorado Additions and Subtractions by Size of Colorado Taxable Income
• Table 10. All Corporations: Colorado Income Tax Credits by Size of Colorado Taxable Income

New Enhancements Since the Previous Report:

• Added short descriptions to the tables to help make the data more accessible
• Developed five new tables to provide more breakouts of the data by single/joint filing status and age group
• Created charts to illustrate and highlight some of the SOI data

Data Tables: 

• Table 1.(opens in new window) Income and Tax Data by Size of Federal AGI
• Table 2.(opens in new window) Income and Tax Data by Size of Federal AGI in $10,000 Increments
• NEW! Table 3.(opens in new window) Income and Tax Data for Single Colorado Returns by Size of Federal AGI
• NEW! Table 4.(opens in new window) Income and Tax Data for Joint Colorado Returns by Size of Federal AGI
• Table 5.(opens in new window) Income and Tax Data for Taxable Returns by Size of Federal AGI
• Table 6.(opens in new window) Income and Tax Data for Non-Taxable Returns by Size of Federal AGI
• NEW! Table 7.(opens in new window) Income and Tax Data for Filers Under 65 by Size of Federal AGI
• Table 8.(opens in new window) Income and Tax Data for Filers 65 and Older by Size of Federal AGI
• Table 9.(opens in new window) Federal AGI by Size of Federal AGI and Federal Filing Status
• Table 10.(opens in new window) Colorado Net Tax by Size of Federal AGI and Federal Filing Status
• NEW! Table 11.(opens in new window) Federal AGI by Size of Federal AGI and Age Group
• NEW! Table 12.(opens in new window) Colorado Net Tax by Size of Federal AGI and Age Group
• Table 13.(opens in new window) Federal AGI by Size of Federal AGI and Number of Exemptions
• Table 14.(opens in new window) Colorado Net Tax by Size of Federal AGI and Number of Exemptions
• Table 15.(opens in new window) Source of Income by Size of Federal AGI
• Table 16.(opens in new window) Adjustments to Income by Size of Federal AGI
• Table 17.(opens in new window) Income and Tax Data by Size of Federal AGI and Standard/Itemized Deduction Returns
• Table 18.(opens in new window) Exemptions and Standard/Itemized Deductions by Size of Federal AGI
• Table 19.(opens in new window) Itemized Deductions by Size of Federal AGI
• Table 20.(opens in new window) Income and Tax Data by Planning Region
• Table 21.(opens in new window) Income and Tax Data for Planning Regions by Size of Federal AGI
• Table 22.(opens in new window) Income and Tax Data by County
• Table 23.(opens in new window) Income and Tax Data for Major Counties by Size of Federal AGI
• Table 24.(opens in new window) Colorado Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 24 Supplement.(opens in new window) Colorado Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
  • This supplemental table to the Individual SOI summarizes all of the returns that were included in SOI and all Colorado income tax returns that were excluded from the SOI data set– either because the returns were not full-year residents or because they did not match up to an IRS return in the data merging process.
  • This information is provided to help the data users apply their own weighting methodologies if needed.
• Table 25.(opens in new window) Colorado Additions and Subtractions by Size of Federal AGI
• Table 26.(opens in new window) Colorado Tax Credits by Size of Federal AGI
• Table 27.(opens in new window) Colorado Tax Checkoff Donations by Size of Federal AGI

Charts: 

• NEW! Proportions of Colorado Net Tax for Single/Joint Returns by Size of Federal AGI(opens in new window)
• NEW! Number of Returns Filed by Age (18-100) and Single/Joint Returns(opens in new window)
• NEW! Average Adjusted Gross Income Per Return by Age (18-100) and Single/Joint Returns(opens in new window)
• NEW! Number of Returns Filed by Colorado County(opens in new window)
• NEW! Average Adjusted Gross Income Per Return by Colorado County(opens in new window)
• NEW! Exemptions, Deductions, and Single/Joint Returns -- Multiple Charts

Enhancements and Changes Since the Previous Report:

• Updates were made to the 2015 SOI to improve the accuracy of the reporting which may limit comparability of the data to prior years’ publications
• See the PDF Report for all tables and additional information such as Introductions, 2013-to-2015 Table Crosswalks, Data Glossaries, and Publication Changes

Full Report:

• 2015 Corporate SOI Report (PDF) includes the tables and supplemental information

Data Tables:

• Table 1. Income and Tax Data by Size of Colorado Taxable Income
• Table 2. Income and Tax Data by Size of Colorado Taxable Income in $10,000 Increments
• Table 3. Income and Tax Data for Intrastate Returns by Size of Colorado Taxable Income
• Table 4. Income and Tax Data for Interstate Returns by Size of Colorado Taxable Income
• Table 5. Colorado Income Tax Deductions by Size of Colorado Taxable Income
• Table 6. Colorado Income Tax Credits by Colorado Taxable Income

The 2014 Individual SOI will not be published due to a technical issue with the IRS data file.

Full Report:

• The 2016 Colorado Tax Profile & Expenditure Report contains the Full Report (PDF) on 2013 Colorado Corporate Statistics of Income on pages 118 through 125.