Can the contract be funded by fiscal year if an Availability of Funds 52.232-18 or 52.232-19 clause is in the contract?
No, not in this case. Incremental funding is always determined by whether the work is severable. In your case, where you have a single period of performance the work is non-severable and you must pay for it all up front - no incremental funding. Had you broken the work up into discrete work packages by using options, or even phases, then the work would have been severable and you could have used incremental funding.
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