OSAP Timeline

Assessment date for all property in the State subject to Ad Valorem Taxation. These assessments are made annually as of January 1

• Prepare revisions to worksheets.
• Compile statistical data for capitalization rates and analyzing sales transactions for central assessments.
• Meet with other state central assessment administrators to discuss special valuation problems and appraisal techniques.
• February 28. Last day to pay the preceding year’s taxes without penalty and interest.
• Corrections of errors or omissions on the part of this office must be requested or initiated prior to March 1, no more than the second year following the tax year for which the correction is to be made. Errors or omissions that are correctable include only obvious clerical mistakes, involving no judgment of or discretion by the assessor, apparent from the face of the official tax and assessment records, such as the name or address of an owner, the location or physical description of property, misplacement of a decimal point or mathematical miscalculation, errors of classification, and duplicate assessment. Errors or omissions do not include clerical mistakes in an Ad Valorem Tax Report filed by a taxpayer. T.C.A. § 67-5-1301(c); T.C.A. § 67-5-509.
• March 1. Delinquency date for the preceding year’s taxes.

• Deadline for the submission of the Ad Valorem Tax Report for centrally-assessed taxpayers. T.C.A. § 67-5-1303.
• Appraisal and assessment work begins.

• Conduct informal appraisal and assessment meetings with company representatives to discuss appraisal and assessment procedures.
• Continue appraisal and assessment work.

• Finalize assessments.
• Prepare for Comptroller Hearings (i.e. testimony, appraisals, company listings to include assessments).

• On or before the first Monday in August, the Comptroller completes and sends a notice of assessment to each company. T.C.A. § 67-5-1327(a).
• Within ten (10) days after the first Monday in August (Statutory Deadline), exceptions to the Comptroller’s assessments may be filed. Failure to file an exception within the ten days shall be deemed a waiver of any objection to the assessments. After the expiration of said ten (10) days the Comptroller shall act on the exceptions, and any evidence submitted, either changing or affirming the assessments made by the Comptroller. T.C.A. § 67-5-1327(b). All companies filing exceptions are notified of the Comptroller’s action so taken.

• The deadline to amend a previously filed Ad Valorem Report is September 1 following the tax year. T.C.A. § 67-5-1301(c); T.C.A. § 67-5-903(e).
• On or before the first Monday in September, the Comptroller files with the State Board of Equalization the assessments made by the Comptroller. T.C.A. § 67-5-1327(c).
• Begin distribution to cities and counties.
• Compile tax rate information for cities and counties.

• The Comptroller prepares and finalizes the certification of assessments to counties and cities. T.C.A. § 67-5-1331.
• Notify companies to file next year's Ad Valorem tax reports, when the distribution of the current tax roll is issued.