Maine does not tax Social Security benefits. Under 36 M.R.S. § 5122(2)(C), the state subtracts the entire federally taxable portion of your Social Security income from your Maine taxable income, with no income cap, age test, or wealth limit.1Maine State Legislature. Maine Code Title 36 5122 Modifications Other retirement income — pensions, 401(k) withdrawals, IRA distributions — is treated differently and is only partly shielded.
How the Social Security Subtraction Works
Maine starts its income tax calculation from your federal adjusted gross income. If the IRS taxed part of your benefits at the federal level, that amount is already baked into the number Maine uses as its starting point. Maine then removes it through a “subtraction modification” on your state return.
The practical effect is complete. If the IRS counted 85% of a $24,000 benefit as taxable — $20,400 — Maine subtracts that same $20,400 before calculating state tax. Your Social Security payments produce no Maine income tax liability, regardless of how large the federal taxable share becomes. The federal thresholds that decide how much of your benefit the IRS taxes have not been indexed to inflation since the 1980s and 1990s, so more retirees cross them each year.2IRS. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable Maine’s subtraction neutralizes that at the state level.
What Counts as Social Security for the Exemption
The subtraction covers every category of Social Security payment, including:
- Retirement benefits based on your work history
- Social Security Disability Insurance (SSDI) payments
- Survivor benefits paid to spouses, children, and other family members of a deceased worker
Railroad retirement benefits get the same treatment. Both Tier 1 and Tier 2 payments from the U.S. Railroad Retirement Board, along with the Board’s unemployment and sick benefits, go on the same line and come out of your Maine taxable income in full.3Maine.gov. 2024 Maine Individual Income Tax Booklet Form 1040ME
Full-year residents and part-year residents can claim the subtraction. Nonresidents generally do not owe Maine tax on Social Security, pension, or annuity income even if the payments originated from a Maine employer.4Maine Revenue Services. Individual Income Tax FAQ
Claiming the Exemption on Form 1040ME
There is no separate application. The subtraction is built into the regular Maine income tax return.
Each January, the Social Security Administration sends Form SSA-1099 showing your total benefits for the prior year in Box 3.5Social Security Administration. GN 05002.010 Social Security Benefit Statement Box 3 Benefits Paid Railroad retirees receive Form RRB-1099 instead. The number you actually enter on your Maine return is the taxable portion shown on your federal 1040, not the total paid to you.
That taxable amount goes on Schedule 1S (Income Subtraction Modifications), Line 3. The Schedule 1S total then carries to Line 15b of Form 1040ME, reducing your state taxable income.3Maine.gov. 2024 Maine Individual Income Tax Booklet Form 1040ME You can file electronically through the Maine Tax Portal, which is free, or through commercial software that supports Maine returns.6Maine Revenue Services. Welcome to Maine Electronic Filing
Two mistakes to avoid. If you forget the subtraction entirely, you overpay and will need an amended return to get the money back. If you enter your gross benefits rather than the federally taxable share, you understate your tax and Maine Revenue Services will charge interest on the underpayment — 9% per year for 2026, compounded monthly.7Maine.gov. Interest Rates 1992 to Present
Pensions, 401(k)s, and IRAs: The Partial Deduction
Social Security gets the full exemption. Other retirement income does not. Distributions from traditional pensions, 401(k) plans, 403(b) plans, 457(b) plans, traditional IRAs, Roth IRAs, SEP IRAs, and SIMPLE IRAs are taxable in Maine, but the state offers a pension income deduction that trims the taxable amount.
For 2026, the maximum deduction equals the maximum annual Social Security benefit payable at full retirement age — a monthly figure of $4,152, or roughly $49,824 per year.8Social Security Administration. 2026 Cost-of-Living Adjustment COLA Fact Sheet3Maine.gov. 2024 Maine Individual Income Tax Booklet Form 1040ME
Here is the catch most retirees miss. The pension deduction is reduced dollar for dollar by the total Social Security and railroad retirement benefits you received during the year — not just the federally taxable portion, but every dollar paid to you. A retiree receiving $35,000 in Social Security sees the pension deduction cap drop from about $49,824 to roughly $14,824. If your Social Security benefits exceed the cap, your pension deduction is zero.9Maine State Legislature. An Act To Increase the Maximum Pension Deduction for State Income Tax
One narrow rule on 457(b) plans: distributions taken before age 55 generally do not qualify for the deduction unless they are part of a series of substantially equal periodic payments made over your lifetime.
Military Retirement Pay
Military retirement is handled separately and more generously. Maine exempts pension and survivor benefit payments received for service in the Army, Navy, Air Force, Marines, or Coast Guard, and that subtraction is not reduced by your Social Security benefits the way the civilian pension deduction is.
What You Actually Pay in Maine
After the Social Security subtraction and any pension deduction, what remains is taxed at Maine’s regular rates. The 2026 brackets are 5.8%, 6.75%, and 7.15%, with the top rate starting at $64,850 of taxable income for single filers and $129,750 for joint filers.10Maine.gov. Individual Income Tax 2026 Rates
Several deductions reduce taxable income before those rates apply. The 2026 standard deduction is $15,300 for single filers and $30,600 for married couples filing jointly. The personal exemption is $5,300. Taxpayers 65 or older get an additional standard deduction of $2,050 (single or head of household) or $1,650 per qualifying spouse (married filing jointly).10Maine.gov. Individual Income Tax 2026 Rates A single retiree 65 or older living mostly on Social Security plus a modest pension can end up owing little or no Maine income tax once the subtraction, pension deduction, and age-based standard deduction are stacked.
One Boundary: Maine Still Has an Estate Tax
Social Security is clear. Estates are not. Maine imposes its own estate tax separate from the federal one, and the Maine exemption is lower than the federal exemption. For 2026, estates valued at or below $7,160,000 owe nothing to Maine. Above that threshold, rates run 8%, 10%, and 12% in graduated bands.11Maine Revenue Services. Estate Tax 706ME An estate that owes no federal tax can still owe Maine tax, which is worth remembering if your combined assets — real estate, retirement accounts, life insurance proceeds — are anywhere near that figure.