Client (sole owner S Corp - yes, I know) is selling a commercial building for several million dollars. Closing has been pushed back several times. So far, she has received payments that will be credited against the sales proceeds to be received at closing. Buyer wanted to extend the closing date and client refused unless she got $1,500 per day which will not be credited against the closing proceeds. I have seen an agreement to that effect, described as "Fourth Amendment to Agreement for Purchaser and Sale of Real Property."
Client gets to keep the cash unless she defaults on the agreement. In that case, she would have to refund it.
It seems to me that this is simply an increase in sales price and, therefore, LTCG. Does anyone see ordinary income here? The "Amendment etc" provides that closing date is set for no later than 7.31.21, although I suppose she could agree to extend subject to further penalties.