Freelance Software Engineer Tax Calculator — Massachusetts 2026

📌 Massachusetts has a flat 5% income tax rate for most income.

📊 Your Massachusetts Tax Estimate as a Software Engineer

Calculate My Massachusetts Tax →

Top Software Engineer Tax Deductions in Massachusetts

• ✓ Home office (dedicated desk or room)
• ✓ Computer hardware, monitors, keyboards
• ✓ Software subscriptions and developer tools
• ✓ Cloud hosting, APIs, and SaaS for client work
• ✓ Online courses and technical certifications
• ✓ Domain names, hosting, and side project costs
• ✓ Internet bill (business use portion)

💡 Software Engineer tip: Software engineers can deduct the home internet bill at 100% if exclusively used for work, or proportionally if mixed. $80/mo internet = $960/year in deductions.

Same Profession — Other States

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→ General SE Tax Calculator for Massachusetts