Maple Infrastructure Trust benefits as NHAI reinstates the 1.641 WPI linking factor for toll fee revisions. This decision reverses a previous reduction, offering greater predictability in toll revenue growth for the Trust's portfolio.
NHAI Reverts WPI Linking Factor to 1.641
NHAI reinstates the 1.641 WPI linking factor for toll fee revisions. This restores the factor from 1.561, impacting Maple Infrastructure Trust. Reader Takeaway: Predictable toll revenue growth restored; regulatory uncertainty removed. ## What just happened The National Highways Authority of India (NHAI) has issued a new policy circular, dated July 8, 2026, which supersedes a previous directive from September 13, 2025. This new circular mandates that the Wholesale Price Index (WPI) linking factor of 1.641 will be retained for all existing contracts and concession agreements. This factor is used to convert the WPI series from the 2004-05 base year to the 2011-12 base year for annual toll fee revisions. This decision follows a Ministry of Road Transport and Highways (MoRTH) Office Memorandum dated June 29, 2026. It effectively reverses the NHAI's earlier move that had reduced the linking factor to 1.561. ## Why this matters The WPI linking factor is crucial for calculating annual toll fee rate revisions on national highways. The previous reduction to 1.561 had introduced uncertainty about the potential for toll rate escalations, which was a significant concern for infrastructure investors. The reinstatement of the 1.641 factor provides greater predictability for toll revenue growth across Maple Infrastructure Trust's portfolio, aligning with historical practices and observations from statutory bodies. ## The backstory Previously, the NHAI had reduced the WPI linking factor to 1.561. This move had created a regulatory overhang for infrastructure projects dependent on toll revenue. The current circular, based on a MoRTH directive and observations from the Comptroller and Auditor General and the Delhi High Court, brings consistency. ## What changes now With the linking factor set at 1.641 for all existing contracts, investors can expect more stable and predictable toll fee adjustments. This removes a key risk factor that could have dampened revenue indexation and provides a clearer outlook for future revenue streams. ## Risks to watch While the immediate regulatory uncertainty is resolved, investors should continue to monitor future policy circulars from NHAI and MoRTH regarding toll fee revisions and WPI calculations. ## Peer comparison This development impacts all entities with toll road concessions from NHAI. The consistent application of the linking factor across all contracts ensures a level playing field regarding revenue indexation for toll collection. ## Context metrics (time-bound) * **September 13, 2025:** NHAI issues a directive reducing the WPI linking factor to 1.561. * **June 29, 2026:** MoRTH issues an Office Memorandum. * **July 8, 2026:** NHAI issues a superseding policy circular retaining the WPI linking factor at 1.641. ## What to track next Investors should watch for the specific impact on Maple Infrastructure Trust's portfolio, including updated revenue projections based on the confirmed linking factor and any further communications from NHAI regarding toll collection policies.
