123. Tax agreements.

If:

  1.  

    (1)     a person is entitled to a capital allowance1 for income tax purposes;

  2.  

    (2)     that person enters into a tax agreement2 with an officer of Revenue and Customs3 for the tax year4 in which the allowance would be given effect; and

  3.  

    (3)     no assessment giving effect to the allowance is made for that tax year,