Registration Form and Questionnaire:
Individual questionnaire
Business questionnaire
Tax Returns and Declaration of Estimated Tax/Vouchers
2025 Tax Return
2026 Estimated Vouchers
2025 Estimated Vouchers
Instructions
Income Tax Return 2025 Instructions
Coupon Books
2026 Employee Monthly Income Tax Withholding Forms
2026 Employee Quarterly Income Tax Withholding Forms
2025 Employee Monthly Income Tax Withholding Forms
2025 Employee Quarterly Income Tax Withholding Forms
Letters
Letters to contractors and sub-contractors
Refund Claim Form
Refund claim form and instructions
Ordinance & Rules and Regulations
Ordinance Amending Chapter 95 of Ordinances for the City of Cambridge
Income Tax Rules and Regulations
Cambridge income tax ordinance
Landlord Forms
Landlord Tenant Form
Income Tax Board of Appeals
How to File An Appeal
Board of Appeals Procedures
Appeals Form
Prior Tax Forms
2024 Tax Return
2023 Tax Return
2022 Tax Return
2021 Tax Return
2020 Tax Return