Colorado Taxation

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Online Resources

 * 1862-1874 - U.S., Internal Revenue Assessment Lists, 1862-1874 - at FamilySearch.org. Images only. (Images include a county research guide, and some county or city assessment lists (annual, monthly, and special) for the years 1862-1866.)
 * 1862-1918 - U.S. IRS Tax Assessment Lists, 1862-1918 - ($); At Ancestry.com (This collection includes annual, monthly and special assessment lists.)
 * Tax Lists at the Colorado State Archives. Search by record type, Tax Lists or view the list of records included in the Archives Search to view records by county. The database is also searchable by name and time span.

Why Use Tax Records
By studying several consecutive years of tax records you may determine when a young men came of age, when individuals moved in and out of a home, or when they died leaving heirs. Authorities determined wealth (real estate, or income) to be taxed. Taxes can be for polls, real and personal estate, or schools.

Tax record content varies and may include the name and residence of the taxpayer, description of the real estate, name of original purchaser, description of personal property, number of males over 21, number of school children, slaves, and farm animals. Tax records usually are arranged by date and locality and are not normally indexed. Tax records can be used in place of missing land and census records to locate a person’s residence.

County Level
Tax records in Colorado may be found in a variety of locations Some are located in the treasurer's office at the county level, others have been moved to libraries, historical societies, or the state archives. Some have been lost or, with permission of the state of Colorado, destroyed. A few dating back to the 1870's or earlier have survived. Tax Lists at the Colorado State Archives has a searchable database for individuals.

State Level

 * 1865-1866 Internal Revenue assessment lists for Colorado Internal revenue assessment lists were created into divisions called Districts, each county is put into a district. County names are arranged alphabetically within the division and then within months. The following is a list of counties placed in which district.  (knowing the district and county your ancestor lived in will make searching this years taxes list a little faster) (scroll down to desired years and click on camera to open)

U.S. Internal Revenue Assessment Lists. Three types of Reports: A=Annual; M=Monthly; S=Special Years and Reports may be different.

These counties are all one division or District, but they are listed under different years, Counties and years are as follows:

Roll 1: years 1862-1863 Counties listed are: Arapahoe, Boulder, Clear Creek, Costilla, Douglas, Fremont,Greenwood, Huerfano, Jefferson, Lake, Laremer, Park Summit, Weld Roll 2: Year 1864  SAME Counties Roll 3: Years 1865-1866  SAME Counties

State laws are always subject to change through the enactment of newly passed statutes or other means, while tax laws are periodically updated in accordance to the needs of the state. You may want to contact the Colorado State Archives with any specific questions.

Colorado State Archives 1313 Sherman Street Floor 1B, Room 20 Denver, CO 80203 Telephone: (303) 866-2358

Tax Laws
Nearly all states collect an annual tax on personal income, based on one's salary and other forms of "taxable income." The vast majority of states have what is known as a progressive tax code, which is essentially a sliding scale based on income, which requires those over a certain threshold to pay the highest rate. Some states have a flat tax that applies to all taxpayers regardless of income. Income taxes are used for a number of state goods and services available to residents, such as public education, police protection, and assistance for low-income individuals. Not all states collect income tax, but typically make up for it in other ways.

There are two types of taxes: federal and state. U.S. citizens need to be sure that they comply with both sets of tax laws.