Maine does not tax Social Security benefits. Under 36 M.R.S. ยง 5122(2)(C), the state lets you subtract the entire federally taxable portion of your Social Security income from your Maine return, with no income cap, age test, or wealth limit.1Maine State Legislature. Maine Code Title 36 5122 Modifications Other retirement income, including pensions, 401(k) distributions, and IRA withdrawals, is treated differently and is only partly sheltered.
How the Social Security Subtraction Works
Maine starts its income tax calculation with your federal adjusted gross income. If the IRS taxed any part of your Social Security benefits at the federal level, that amount is already sitting inside your federal AGI. Maine then removes it through what the state calls a subtraction modification: a line on your return that pulls the taxable Social Security amount back out before Maine calculates what you owe.1Maine State Legislature. Maine Code Title 36 5122 Modifications
The result is clean. If the IRS treated 85% of your $24,000 in benefits as taxable, that $20,400 flows into your federal AGI and Maine subtracts the full $20,400 right back out. Your Maine tax on Social Security payments is zero.
Railroad Retirement Gets the Same Treatment
Maine handles U.S. Railroad Retirement Board benefits identically to Social Security. Tier 1, Tier 2, and unemployment and sick benefits from the Board all qualify for the same subtraction, and they go on the same line of the return.2Maine.gov. 2024 Maine Individual Income Tax Booklet Form 1040ME
Who Can Claim the Exemption
Any Maine taxpayer with taxable Social Security income on their federal return can claim the subtraction. There is no phaseout at higher incomes and no minimum age beyond what Social Security itself requires to receive benefits. The exemption covers:
- Retirement benefits based on your work history
- Social Security Disability Insurance (SSDI) payments
- Survivor benefits paid to spouses, children, and other qualifying family members
Full-year and part-year Maine residents both qualify. Nonresidents generally do not owe Maine income tax on Social Security, pension, or annuity income at all, even when the payments trace back to a Maine employer or a Maine-based retirement account.3Maine Revenue Services. Individual Income Tax FAQ
Claiming the Subtraction on Your Return
You do not file a separate application. The subtraction lives inside the regular Maine income tax return.
Start with Form SSA-1099, which the Social Security Administration mails in January. Box 3 shows the total benefits paid to you during the prior calendar year.4Social Security Administration. GN 05002.010 Social Security Benefit Statement Box 3 Benefits Paid Railroad retirees use Form RRB-1099 instead. The number you actually need for the Maine subtraction is the taxable portion your federal return already calculated.
On Form 1040ME, report the subtraction on Schedule 1S (Income Subtraction Modifications), Line 3. The Schedule 1S total then flows to Line 15b of Form 1040ME, reducing your Maine taxable income.2Maine.gov. 2024 Maine Individual Income Tax Booklet Form 1040ME You can file electronically through the Maine Tax Portal at no cost, or through commercial tax software that supports Maine e-filing.5Maine Revenue Services. Welcome to Maine Electronic Filing
Enter only the federally taxable portion. If you overstate the subtraction by entering your total benefits, Maine Revenue Services charges interest on the underpayment at 9% per year for 2026, compounded monthly.6Maine.gov. Interest Rates 1992 to Present Forgetting the subtraction goes the other way: you overpay, and you can recover the money by filing an amended return.
Pensions, 401(k)s, and IRAs Are Taxed Differently
Social Security is fully off the table, but distributions from 401(k) plans, IRAs, traditional pensions, and 403(b) plans are taxable in Maine. Maine offsets some of that with a pension income deduction. For 2026, the maximum deduction equals the maximum annual Social Security benefit payable at full retirement age on January 1 of the tax year.2Maine.gov. 2024 Maine Individual Income Tax Booklet Form 1040ME The 2026 maximum monthly Social Security benefit at full retirement age is $4,152, which works out to roughly $49,824 per year.7Social Security Administration. 2026 Cost-of-Living Adjustment COLA Fact Sheet
There is an important catch built into this deduction. It is reduced dollar-for-dollar by the total Social Security and railroad retirement benefits you receive, and that means the entire amount paid to you, not just the portion the IRS taxed. If you collect $35,000 in Social Security and the deduction cap is $49,824, only about $14,824 of pension deduction remains. If your Social Security benefits alone exceed the cap, the pension deduction disappears entirely.8Maine State Legislature. An Act To Increase the Maximum Pension Deduction for State Income Tax
Qualifying plans include employer-sponsored plans under Internal Revenue Code sections 401(a), 403, and 457(b), along with traditional, Roth, SEP, and SIMPLE IRAs. Distributions from a 457(b) plan taken before age 55 generally do not qualify unless they are part of a series of substantially equal periodic payments over your lifetime.
Military Retirement Pay
Military retirement is treated more generously. Maine exempts military 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 This Means for Your Maine Tax Bill
After the Social Security subtraction and any pension deduction, whatever remains is taxed at Maine’s regular brackets. For 2026, the rates are 5.8% on taxable income up to $27,400 (single) or $54,850 (joint), 6.75% on income up to $64,850 (single) or $129,750 (joint), and 7.15% above those amounts.9Maine.gov. Individual Income Tax 2026 Rates
Maine’s 2026 standard deduction is $15,300 for single filers and $30,600 for married couples filing jointly, with a personal exemption of $5,300. Filers aged 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).9Maine.gov. Individual Income Tax 2026 Rates Stacked with the Social Security subtraction and the pension deduction, a single retiree over 65 with Social Security and a modest pension may owe little or no Maine income tax at all.