Sec 170(f)(8) requires a few here:
Content of acknowledgment. An acknowledgment meets the requirements of this subparagraph if it includes the following information:
(i) The amount of cash and a description (but not value) of any property other than cash contributed.
(ii) Whether the donee organization provided any goods or services in consideration, in whole or in part, for any property described in clause (i).
(iii) A description and good faith estimate of the value of any goods or services referred to in clause (ii) or, if such goods or services consist solely of intangible religious benefits, a statement to that effect.
Note that in (iii), it says, “…the value of any goods or services referred to in clause (ii).” Clause (ii), however, doesn’t just refer to goods/services provided, since clause (ii) is stated as a “whether” question. But that makes little sense, so I think clause (iii) needs to be read in reference to goods/services actually provided. That is, “the goods or services referred to in clause (ii)” refers to “goods or services in consideration.”
At first blush, a $0 entry next to “Value of Goods/Services:” on the acknowledgement letter doesn’t really tell us if goods/services were provided. A $0 entry could mean (1) goods/services were provided, but the value, as per the charity’s stipulation, is $0 or (2) no goods and services were provided whatsoever.
But at second blush, if clause (iii) really is to be read with reference to goods/services actually provided, then putting down a $0 value is an overt stipulation that we were provided with goods/services, but the value is $0. When no goods or services were provided, the charity shouldn’t put down a value of $0, because any inserted value – even $0 - is with reference to goods services actually provided (according to my reading).
Now, if the letter stated, “No goods or services were provided in exchange for your donation,” that answers clause (ii). By extension, it also answers clause (iii), because there is only one possible value that could be returned in such a situation and that is $0. But that doesn’t seem quite right, because we are stipulating a value ($0) in such a case to something that was provided to us, when the fact is, we were provided with nothing. It seems the better theory, as explained above, is that if the Letter states that no goods/services were provided, then clause (iii) is moot.