We had a single instance where a shareholder was not getting the tax abatement. (Technically, the coop was not receiving a tax abatement for his share of the ownership of the building, so there was no money for the coop to return to him; it's not as though the coop were pocketing it.) The managing agent never noticed the shareholder's exclusion, even though they had records of everybody else getting it and DOF reported that he was excluded because his social security number was not on file with DOF(something that could easily have been corrected had anybody at the managing agent been paying attention). After the coop treasurer noticed this and brought it to the managing agent's attention, they blamed the shareholder (whom they never notified that he should file that info directly with DOF) and claimed that they didn't have his social security number in the first place. BS. Of course they had it; the got it when he acquired the shares about 3 years earlier. In my opinion, it was nothing but blame shifting. In any event, I believe both the shareholder and the managing agent then reported the SS# to DOF, and he is now geting the abatement. To my knowledge, nobody tried to find out whether he could get back-abatements from DOF.