For the 2020 tax year, filing your Massachusetts income tax return was important for residents, part-year residents, and nonresidents who earned Massachusetts-source income. The Massachusetts Department of Revenue required taxpayers to determine their filing status, calculate their adjusted gross income, and use the correct forms to report earnings, deductions, and credits. For many individuals and small business owners, understanding these requirements was essential to staying compliant with state taxes and avoiding unnecessary penalties or interest charges.

In addition to these standard requirements, the 2020 tax year was particularly difficult for Massachusetts taxpayers due to COVID-19-related rule changes. Special income sourcing rules applied to remote work affect how residents and nonresidents calculate taxable income. Massachusetts also provided certain tax credits for income taxed by other states when work arrangements changed because of pandemic-related restrictions. These adjustments made it even more important to understand the correct filing process, especially for those who moved, worked remotely, or earned income in multiple states.

Whether you were a full-year resident filing Form 1, a part-year resident or nonresident filing Form 1-NR/PY, or a small business owner completing additional schedules, accuracy in your state tax return could reduce your tax burden and ensure timely refunds. By following a straightforward step-by-step approach, taxpayers could correctly determine exemptions, claim all eligible deductions, and use the right payment options to meet their state tax obligations. This guide walks through every stage of filing your 2020 Massachusetts state tax return, from identifying who must file to tracking your refund after submission.

Understanding Massachusetts State Income Tax for 2020

Who Needs to File

Massachusetts had clear rules in 2020 for determining which taxpayers must file a Massachusetts income tax return.

  • Full-year residents: Required to file if gross income exceeded $8,000, regardless of whether income was earned in Massachusetts or another state. This ensured residents reported all taxable income and paid state taxes correctly.

  • Nonresidents: Required to file if Massachusetts source income was greater than their personal exemption amount multiplied by the ratio of Massachusetts income to total revenue. This ensured out-of-state taxpayers contributed fairly when earning income from Massachusetts-based activities.

  • Part-year residents: Those who moved into or out of Massachusetts in 2020 had to file if their gross income exceeded $8,000. The return had to reflect only income earned during their residency in the state.

Income Thresholds and No-Tax Status Eligibility

Massachusetts allowed certain taxpayers to claim No-Tax Status for the 2020 tax year. This status meant that even if you were required to file a Massachusetts personal income tax return, you would not owe any state income tax. Eligibility depended on your Massachusetts adjusted gross income (AGI), filing status, and, in some cases, the number of dependents you could claim. This provision helped reduce the tax burden for lower-income households while ensuring they complied with state filing requirements.

  • Single filers: Eligible for No-Tax Status if Massachusetts AGI was $8,000 or less for the 2020 tax year. This threshold applied whether the income was earned entirely in Massachusetts or partly from other states, as long as it was included in the Massachusetts AGI calculation.

  • Head of household: Eligible if AGI was $14,400 or less, plus an additional $1,000 for each dependent. This higher threshold recognized the additional financial responsibilities of supporting dependents and maintaining a household.

  • Married filing jointly: Eligible if AGI was $16,400 or less, plus $1,000 per dependent. Married couples filing together could combine incomes for this calculation, but they also benefited from a higher base limit before state taxes were applied.

Even if you qualify for No-Tax Status, Massachusetts still requires you to file a return to report your income and claim the status officially. Filing ensures you remain in compliance, documents your eligibility, and can potentially access refundable credits such as the earned income credit.

Key Filing Deadlines and Extensions

The Massachusetts state tax return for the 2020 tax year was due April 15, 2021. Meeting this deadline was critical to avoid penalties and interest.

  • Automatic six-month extension: Granted to all taxpayers who paid at least 80% of their total amount due by April 15, 2021. The extension applied only to filing, not to payment—any unpaid balance after the original due date accrued interest and possible penalties.

Key Changes for the 2020 Tax Year

The 2020 tax year included special COVID-19-related provisions that affected how Massachusetts income was sourced and how credits were applied.

  • Remote work sourcing rule: Nonresidents who usually worked in Massachusetts but worked remotely in 2020 because of the pandemic were still taxed on that income as Massachusetts source income.

  • Credits for taxes paid to other states: Massachusetts residents who began working in Massachusetts due to another state’s COVID-19 restrictions could claim a credit for taxes paid to that other state, as permitted under Massachusetts law.

Choosing the Correct Massachusetts Tax Forms

Forms for Individuals

Selecting the correct Massachusetts state tax return form for 2020 was essential for accurate reporting and compliance with state tax laws.

  • Form 1: Used by full-year residents to report all taxable income earned during the 2020 tax year, whether earned inside or outside Massachusetts. Filing this form ensured that all applicable deductions, exemptions, and credits were properly applied for residents.

  • Form 1-NR/PY: Designed for nonresidents and part-year residents to report Massachusetts source income. This form allowed taxpayers to allocate income between Massachusetts and other states, preventing overpayment or double taxation.

Mandatory Schedules

Based on income types, deductions, and Massachusetts Department of Revenue compliance requirements, specific schedules were required.

  • Schedule HC: All residents must verify health insurance coverage that meets Minimum Creditable Coverage (MCC) standards. This schedule also determines whether an affordability exemption applies if full-year coverage is not maintained.

  • Schedule X/Y: Used to report additional income or deductions not listed directly on the main tax form, helping taxpayers adjust their taxable income accurately.

  • Schedule B: Required for reporting interest, dividends, and capital gains. This ensured both short-term and long-term gains were correctly taxed under Massachusetts rules.

  • Schedule D: Used for reporting long-term capital gains and losses, which were taxed at a different rate than short-term gains. 

Forms for Small Business Owners

Additional filing requirements were frequently imposed on self-employed taxpayers or small business owners in 2020.

  • Schedule C: Used to report profit or loss from business activities for sole proprietorships. This included all business-related income, expenses, and net earnings.

  • Schedule E-1: Required for taxpayers reporting rental real estate and royalty income, ensuring these earnings were taxed adequately as Massachusetts source income.

  • Schedule E-2: Used to report income from partnerships and S corporations, allowing the state to assess the taxpayer’s share of the business’s taxable earnings.

Step-by-Step Guide to Completing Your Massachusetts Tax Return

Step 1: Gather All Required Documents

Before starting your 2020 Massachusetts tax return, collect all W-2s, 1099s, other proof of income, and your prior year returns for reference. Have Form 1099-HC for health coverage verification and receipts for deductions such as rent, student loan interest, and charitable contributions.

Step 2: Complete Personal and Filing Status Information

Enter your legal name, Social Security number, and current address exactly as they appear on official records. Choose the correct filing status—single, married filing jointly, married filing separately, or head of household—since this impacts your exemption and credit eligibility.

Step 3: Calculate Massachusetts Gross Income

Massachusetts gross income includes wages, self-employment earnings, rental income, and capital gains. Certain federal taxable income, such as most Social Security benefits, is excluded at the state level, which can lower your tax burden.

Step 4: Apply Exemptions and Deductions

Reduce your taxable income by applying the correct personal exemption: $4,400 for single or married filing separately, $6,800 for head of household, or $8,800 for married filing jointly. Standard deductions for 2020 included rent, student loan interest, and commuter expenses.

Step 5: Determine Taxable Income and Calculate Tax

Subtract exemptions and deductions from your gross income to find your taxable income. For 2020, most taxable income was taxed at a flat 5.0% Massachusetts income tax rate, with certain capital gains taxed at higher rates.

Step 6: Claim Credits You Qualify For

Reduce your tax liability with credits like the earned income credit, dependent care credit, and circuit breaker credit for eligible seniors. These credits can directly lower your tax owed and, in some cases, increase your refund.

Step 7: Calculate Payments and Determine Refund or Balance Due

Add up your state withholding, estimated tax payments, and refundable credits. If your costs exceed your tax owed, you receive a refund; if they fall short, you must pay the balance by the deadline.

Step 8: Complete Schedule HC for Health Care Compliance

Massachusetts required residents to verify health insurance coverage that met Minimum Creditable Coverage standards. If uninsured for part or all of 2020, report your coverage or claim an affordability exemption.

Step 9: Report Small Business Income (If Applicable)

Sole proprietors and self-employed individuals must complete Schedule C to report business income and expenses. The resulting net profit is then transferred to your primary Massachusetts tax return.

Step 10: Review and Avoid Common Filing Mistakes

Before you submit your return, make sure it is free of missing forms, incorrect math, and signatures. Verifying the details of the bank account is necessary to ensure that direct deposit refunds are processed without any delays.

Filing Methods: Electronic vs. Paper

Benefits of E-Filing

E-filing your 2020 Massachusetts state tax return through MassTaxConnect or approved software meant faster refunds, fewer errors, and instant confirmation of receipt. Electronic filing also provides built-in calculations and greater security than mailing paper forms.

Paper Filing Considerations

Paper returns took significantly longer to process—often 6 to 10 weeks for refunds—and required manual calculations. To avoid delays, taxpayers had to mail returns to the correct Massachusetts Department of Revenue address and ensure all forms were included.

E-Filing Options in Massachusetts

For 2020, eligible residents could use MassTaxConnect for free, file through the Free File Alliance for combined federal and state returns, or use commercial tax software. Professional tax preparers could also submit returns electronically on behalf of clients.

Making a Tax Payment 

Payment Options

For the 2020 tax year, taxpayers could pay electronically through MassTaxConnect by ACH debit with no fee or by credit card for a small processing fee. Payments by check or money order required Form PV and had to be mailed to the Massachusetts Department of Revenue.

Payment Deadlines and Penalties

All 2020 state tax payments were due by April 15, 2021, regardless of any filing extension. Late payments could result in failure-to-pay, failure-to-file penalties, and interest on the unpaid balance.

If You Cannot Pay in Full

If you cannot pay your full tax liability, the Massachusetts Department of Revenue recommends paying as much as possible to reduce interest and penalties. Taxpayers could also request a payment agreement through MassTaxConnect to spread payments over time.

Tracking Your Refund or Balance Due

How to Check Refund Status

Taxpayers could check their 2020 Massachusetts refund status online through MassTaxConnect, which offered the fastest updates. Those without internet access could call (617) 887-6367 or (800) 392-6089 from within Massachusetts for automated status information.

Refund Processing Timelines

E-filed returns with direct deposit are typically processed in 4 to 6 weeks, while paper returns with a mailed check refund could take 9 to 11 weeks. Choosing e-filing with direct deposit was the quickest way to receive a refund.

Common Reasons Refunds Are Delayed

Refund delays often occurred due to missing or incorrect forms, calculation errors, or additional review for claimed credits. Refunds could also be held if the taxpayer owed other state debts or failed identity verification checks.

Final Filing Checklist

  • For All Filers: Complete Form 1 or Form 1-NR/PY, attach all required schedules, and verify all calculations. Sign and date your return, keep a copy for your records, and confirm payment or direct deposit details are correct.

  • For Small Business Owners: Include Schedule C with full business income and expense details. Make sure all deductions are legitimate and backed by receipts or financial records.

  • For E-Filing: Double-check your bank account and routing numbers for direct deposit. Save your submission confirmation and retain a copy of your return in printed or digital format.

  • For Paper Filing: Do not staple forms, use the correct Massachusetts Department of Revenue mailing address, and apply proper postage. Mail early enough to meet the April 15 deadline.

Frequently Asked Questions

What if I missed the personal income tax filing deadline for my 2020 Massachusetts return?

If you missed the April 15, 2021, deadline and did not have an extension, file your Massachusetts personal income tax return immediately to reduce penalties and interest. An automatic six-month extension applied if 80% of the total amount owed was paid on time, but interest still applied to unpaid balances after the original due date.

Can I e-file my 2020 Massachusetts taxes for free? 

In 2020, many full-year residents with simple returns could e-file for free through MassTaxConnect. The Free File Alliance also offered combined federal and Massachusetts returns at no cost for eligible taxpayers under certain income limits. These free options helped reduce filing costs and ensured faster refund processing than paper filing.

What deductions are commonly missed on Massachusetts tax returns?

In 2020, taxpayers often overlooked deductions for rent, commuter costs, student loan interest, and dependent care expenses. Self-employed health insurance premiums and certain college tuition deductions were also frequently missed. Reviewing Massachusetts-specific deductions before filing ensured you claimed all eligible amounts, helping reduce your taxable income and potentially lowering your state tax liability.

How do I request an extension for my 2020 Massachusetts tax return?

Massachusetts granted an automatic six-month extension to file if at least 80% of your tax owed was paid by April 15, 2021. No form was required unless you submitted a payment with the extension, which used Form M-4868. Remember, an extension applies only to filing, not paying, so interest accrues on unpaid balances after the deadline.

Can I file jointly in Massachusetts if I moved mid-year?

Yes. Part-year residents must use the same filing status as on their federal return. If you and your spouse filed jointly at the federal level, you would also file jointly in Massachusetts using Form 1-NR/PY. This form allowed you to allocate taxable income between Massachusetts and other states during your part-year residency.

How does Massachusetts tax unemployment benefits for 2020?

For 2020, Massachusetts generally taxed unemployment benefits as ordinary income. In their state return, the state required taxpayers to include Form 1099-G, which displayed the total benefits received. While specific federal relief provisions applied during COVID-19, Massachusetts rules still treated most unemployment compensation as taxable, potentially increasing your total state income tax liability.

How do I amend my 2020 state tax return, and does it affect estate or sales tax? 

To amend, file a new Form 1 or Form 1-NR/PY marked “Amended Return” and include all initial schedules filed. Send it to the Massachusetts Department of Revenue, PO Box 7000, Boston, MA 02204-7000. Amending generally does not affect your estate tax or sales tax obligations, but can change your refund or balance due.