This paper investigates tenseless finite clauses in Swedish. In certain contexts thefinite perfect auxiliary, ha ‘have’, is optional. These contexts are finite non-V2clauses and V2 clauses in which the V2 position is filled by a modal adverb, forexample kanske ‘maybe’. The analysis of these tenseless clauses is presented inthe constraint based lexicalist theory, lexical functional grammar. The analysisbuilds on, and develops, the one presented by Sells (2007).