Amend CSHB 3646 by adding the following appropriately 
numbered SECTIONS to the bill and renumbering the subsequent 
SECTIONS of the bill accordingly:
	SECTION ____.  Section 26.08, Tax Code, is amended by adding 
Subsection (p) to read as follows:
	(p)  Notwithstanding Subsections (n) and (o), a school 
district is not required to obtain the approval at an election under 
this section of the district's adopted tax rate if the rate does not 
exceed the sum of:
		(1)  the maintenance and operations tax rate of the 
district for the most recent tax year of the period that consists of 
the 2007 and 2008 tax years in which the district's tax rate was 
approved at an election under this section; and
		(2)  the district's current debt rate.                                 
	SECTION ____.  (a)  Section 26.08(p), Tax Code, as added by 
this Act, applies to the ad valorem tax rate of a school district 
beginning with the 2009 tax year, except as provided by Subsection 
(b) of this section.
	(b)  If the governing body of a school district adopted an ad 
valorem tax rate for the school district for the 2009 tax year 
before the effective date of this Act, Section 26.08(p), Tax Code, 
as added by this Act, applies to the ad valorem tax rate of that 
school district beginning with the 2010 tax year, and the law in 
effect when the tax rate was adopted applies to the 2009 tax year 
with respect to that school district.