The National Economic and Social Development Council (NESDC) is revising Thailand's 2026 GDP for Q1-Q3 after the Office of Industrial Economics changed how the Manufacturing Production Index (MPI) is calculated to capture new production activity. August 2026 MPI rose 4.44% year on year to 103.43. Revisions are not yet in the November release, Q4 will be reassessed, and clear figures are expected in early 2027. The full-year effect is not yet known. For a typical SME, no action is needed now; treat the official GDP figures as provisional until then.