Clearance of government expenditure arrears has been one of the main goals of the Spanish economic policies in the last few years. Two key elements can be singled out in those policies: the extraordinary funding mechanisms to regions and municipalities, aimed at curbing the temporary component of late payments, and the elements of transparency and visibility of the average payment periods of public administrations. This paper provides a general presentation of the problem, with a summary of the best practices suggested by experts and describes the strategy adopted in Spain and its results.