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Massachusetts DOR Certification of Surtax and Capital Gains Tax

Updated: January 19, 2026

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FY2026

Open DOCX file, 89.95 KB,  FY26 Surtax Certification: Period 2 (English, DOCX 89.95 KB)
Open DOCX file, 90.16 KB,  FY26 Capital Gains Tax Certification: Period 2 (English, DOCX 90.16 KB)
Open PDF file, 291 KB,  FY26 Surtax Certification: Period 1 (English, PDF 291 KB)
Open PDF file, 118.41 KB,  FY26 Capital Gains Tax Certification: Period 1 (English, PDF 118.41 KB)

FY2025

Open PDF file, 185.11 KB,  FY25 Surtax December Certification (English, PDF 185.11 KB)
Open PDF file, 259 KB,  FY25 Surtax Certification: Periods 1-2-3-4 (English, PDF 259 KB)
Open PDF file, 129.69 KB,  FY25 Surtax Certification: Periods 1-2-3 (English, PDF 129.69 KB)
Open PDF file, 108.11 KB,  FY25 Surtax Certification: Periods 1-2 (English, PDF 108.11 KB)
Open PDF file, 248.83 KB,  FY25 Capital Gains Tax Certification: Periods 1-2-3-4 (English, PDF 248.83 KB)
Open PDF file, 200.02 KB,  FY25 Capital Gains Tax Certification: Periods 1-2-3 (English, PDF 200.02 KB)
Open PDF file, 89.23 KB,  FY25 Capital Gains Tax Certification: Periods 1-2 (English, PDF 89.23 KB)

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Contact Center (617) 887-6367
Toll-free in Massachusetts (800) 392-6089

9 a.m.–4 p.m., Monday through Friday

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