The home renovation tax credit has a hard date of January 31: either you've done it by January 31 or you're out of luck. As sure as God made little green apples, on February 1 I'm going to get a raft of telephone calls in my constituency office saying something to the effect that “The windows guy said he'd arrive on Friday, but he didn't arrive until Monday, so I'm out of luck”, or “My contractor got held up on another job, and he was going to get it done, but I'm out of luck.”
The question is, how hard is the hard date? Second, have you advertised to people that this is a hard date? Third, is there a way in which it could be structured so that, for instance, a contract entered into prior to January 31 will be honoured even though the work might well be done afterwards?