1. 

   Danny Active Member

   For single life annuities, we have the approximation:
   
   abar_x approx equal to adue_x -1/2
   
   Does this approximation apply in exactly the same way for joint life and last survivor annuities?

    

   Danny, Aug 9, 2023

   #1
2. 

   Michael Clarkson ActEd Tutor Staff Member

   Hi Danny,
   Yes, it does indeed.
   Similarly, the "a_x = adue_x -1" and "Abar_x = (1+i)^0.5 x A_x" approximations also apply for joint life and last survivor types.
   Thanks
   Michael

    

   Michael Clarkson, Aug 9, 2023

   #2

   Danny likes this.

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