The Finance Ministry says people who applied to review their State Welfare Card eligibility for 2026 can check status on the programme website (welfare.mof.go.th). If the status shows corrections are needed, make them by 20 September 2026 through the relevant eligibility-checking unit or the local OSS centre. The review results are announced together on 30 September 2026. This matters mainly if you or your staff hold or are applying for a welfare card; for a small business, it is a personal-household deadline rather than a direct cost or tax change.