{"data":[{"label":"2026-Q2","start":"2026-04-01","end":"2026-06-30","filing_deadline":"2026-07-31","fuel_types":["diesel","gasoline"],"jurisdiction_count":48,"has_mid_quarter_revision":false},{"label":"2026-Q1","start":"2026-01-01","end":"2026-03-31","filing_deadline":"2026-04-30","fuel_types":["diesel","gasoline"],"jurisdiction_count":48,"has_mid_quarter_revision":false},{"label":"2025-Q4","start":"2025-10-01","end":"2025-12-31","filing_deadline":"2026-01-31","fuel_types":["diesel","gasoline"],"jurisdiction_count":48,"has_mid_quarter_revision":false},{"label":"2025-Q3","start":"2025-07-01","end":"2025-09-30","filing_deadline":"2025-10-31","fuel_types":["diesel","gasoline"],"jurisdiction_count":48,"has_mid_quarter_revision":false},{"label":"2025-Q2","start":"2025-04-01","end":"2025-06-30","filing_deadline":"2025-07-31","fuel_types":["diesel","gasoline"],"jurisdiction_count":48,"has_mid_quarter_revision":false}],"meta":{"source":"IFTA quarterly tax rate matrix (iftach.org), human-reviewed import","disclaimer":"Reference data. Verify against the official IFTA matrix before filing.","generated_at":"2026-09-08T13:44:48+00:00"}}