# Technical Sanction (T.S.) > Technical Sanction (T.S.) means approval by [authority] to a detailed estimate of work's cost **Term:** Technical Sanction (T.S.) **Last updated:** 2026-07-29 ## Definition ## What Technical Sanction (T.S.) Means in a Contract Technical Sanction, often abbreviated as T.S., refers to the formal endorsement given by a designated technical authority confirming that a detailed estimate for a proposed work is technically correct and that the costs quoted are justified based on prevailing rates, standards, and specifications. This approval is a precondition in many public works and infrastructure contracts before financial commitments or tendering can proceed. In practice, T.S. acts as a checkpoint that separates conceptual approval of a project from the granular verification of its engineering and cost details. A project may have received in-principle or administrative approval, but without technical sanction, the detailed estimate cannot move forward to procurement or execution stages. This distinction matters because it places responsibility for technical accuracy on qualified personnel rather than purely administrative decision-makers. ## How Technical Sanction (T.S.) Is Defined or Measured Technical sanction is typically defined by reference to the competence of the sanctioning authority and the monetary threshold of the estimate. Organizations, particularly government departments and public bodies, often establish tiered levels of authority, where officers at different ranks or positions are empowered to sanction estimates up to specified financial limits. An estimate exceeding a lower officer's limit must be escalated to a higher authority for sanction. The measurement of whether a technical sanction is valid usually depends on several factors, including the professional qualifications of the sanctioning officer, adherence to standard schedules of rates, and confirmation that the technical specifications match the intended scope of work. A