§ 31-2-213 — The department may promulgate rules necessary to implement this act

(d) The registration of mobile machinery expires ten (10)
days after its transfer unless the original owner files an
application for a transfer of ownership accompanied by the fees
based on the amount which would be due on a new registration as
of the date of transfer less any credit for the unused portion
of the original registration fees for the original registration
for the mobile machinery and an additional fee of six dollars
($6.00) with a county treasurer. Upon receipt of a completed
application and the required fee, the county treasurer shall
issue the new owner a new certificate of registration. The fee
collected under this subsection shall be deposited in the county
general fund.
(e) The fee for mobile machinery shall be computed by
multiplying the statewide average county, school district and
state property tax mill levy for the preceding year as computed
by the state board of equalization times the applicable
assessment factor times the valuation of the mobile machinery.
The department of revenue shall establish schedules for
valuation of mobile machinery for use by county treasurers.