This paper extends the literature on tax amnesties by considering two special grace programmes. The¯rst is an o®er by the government not to investigate taxpayers' accounts, the second not to prosecute indicted evaders. I analyse the impact of both measures on the taxpayers' optimal behaviour and the government's net revenue, and derive the conditions under which it would be desirable to implement them on a permanent basis. JEL Nos. H26 (Tax Evasion) and K42 (Illegal Behavior and the Enforcement of Law).