If it is necessary to set user fees for infrastructure at a certain level, the government may, under the PPP Act, give a construction subsidy to a concessionaire. The amount is determined in the concession agreement and the ratio of subsidy to construction costs is decided by negotiation. The timing for subsidy payments is determined in the concession agreement and is set in terms of the concessionaire's equity investment plan. Construction subsidies are paid annually or quarterly and cannot be concentrated in a particular year. The point of distribution must reflect the progress being made on completing a project and the scope of the equity investment.