Prorating my new property tax bill.

[Marcus Jesson]

Hello everyone, 

I purchased a building March 1st, 2023, the tenant has been paying $999.42 a month toward the property tax bill. I just received the bill the first half was due 11/01/2023 and the second half is due 2/01/2024. The building assessment price was adjusted, and I received a second bill due 12/11/23 and 4/10/24. My tenant is on a NNN lease and pays the adjusted property tax my question is when should I start prorating for the new tax amount and when do I charge for the outstanding tax bill that I am currently facing.

Original property tax bill: 11/01/23 - $6,107.23
                                               2/01/24 - $6,107.23
       
Supplemental bill: 12/11/23 - $5020.83
                                   4/10/24 - $5020.83