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Massachusetts DOR Certification of Surtax and Capital Gains Tax

Updated: December 16, 2025

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FY2026

Open PDF file, 118.37 KB,  FY26 Surtax Certification: Period 1 (English, PDF 118.37 KB)
Open PDF file, 117.88 KB,  FY26 Capital Gains Tax Certification: Period 1 (English, PDF 117.88 KB)

FY2025

Open PDF file, 115.94 KB,  FY25 Surtax December Certification (English, PDF 115.94 KB)
Open PDF file, 226.54 KB,  FY25 Surtax Certification: Periods 1-2-3-4 (English, PDF 226.54 KB)
Open PDF file, 89.81 KB,  FY25 Surtax Certification: Periods 1-2-3 (English, PDF 89.81 KB)
Open PDF file, 83.94 KB,  FY25 Surtax Certification: Periods 1-2 (English, PDF 83.94 KB)
Open PDF file, 222.91 KB,  FY25 Capital Gains Tax Certification: Periods 1-2-3-4 (English, PDF 222.91 KB)
Open PDF file, 173.55 KB,  FY25 Capital Gains Tax Certification: Periods 1-2-3 (English, PDF 173.55 KB)
Open PDF file, 64.21 KB,  FY25 Capital Gains Tax Certification: Periods 1-2 (English, PDF 64.21 KB)

Contact

Phone

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

9 a.m.–4 p.m., Monday through Friday

Online

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