Mumbai: Mint Road will have to take the lead in holding down North Block’s borrowing costs as bond traders believe the latest raft of federal incentives are more in the nature of guarantees, potentially with a limited role in driving immediate economic expansion. Finance minister Nirmala Sitharaman on Monday expanded the government's emergency credit line guarantee scheme (ECLGS), announced a fresh guarantee plan for the microfinance sector, and also opened a concessional loan programme for the healthcare industry. Economists estimate that the total impact of the government measures will be 0.6% of GDP. Bond yields climbed slightly on Tuesday with the benchmark 10-year bond climbing to 6.08%, a two-month high, before ending down at 6.04%. Dealers said the benchmark yield does not reflect the economic scenario.