This is one of the key principles underpinning most EU funding for things like new roads or bridges, or schemes to help boost job creation. In practice, it means national governments or local authorities should not expect a free ride from the Union. If funding for a project is covered by the additionality rule, the EU will only provide money for the scheme if national authorities also chip in. The general rule is a 50-50 split for funding, with half of the money coming from national sources and half from Union coffers. However, for projects in some of the EU's poorest regions, the Union contribution can be as much as 85 percent.