Maryland's New Age 77+ Supplemental Tax Credit (Effective 2026), the Standard Homeowners' Tax Credit, and the Counties That Layer Their Own
Updated April 2026
Tax year 2026 is the first cycle for Maryland's new Age 77+ Supplemental Tax Credit, a separate program from the long-standing Homeowners' Property Tax Credit (HTC) that pays a percentage of state income tax liability scaled by age (25% at 77, 50% at 78, 75% at 79, 100% at 80 and older). The two programs are mutually exclusive: a senior chooses one or the other. The standard HTC has tighter income limits ($60,000 household, $200,000 net worth) but a more generous formula on the property tax bill itself; the new 77+ credit has much higher income caps ($175,000 single / $250,000 joint) but is capped at your state income tax liability, meaning seniors with low state tax liability get less out of it.
On top of either state-level credit, several Maryland counties (Montgomery, Howard, Baltimore County, Anne Arundel, Carroll, and others) layer their own supplemental tax credit programs that can stack with the state HTC. The result is a multi-program landscape that's genuinely worth running both calculations on before assuming the obvious answer.
The Standard Homeowners' Property Tax Credit (Maryland Tax-Property Article §9-104)
Maryland's long-running HTC is available to any owner-occupant, not senior-specific, but seniors often qualify by virtue of fixed retirement incomes that fall under the income cap. Eligibility:
- Combined gross household income for the prior calendar year cannot exceed $60,000. “Combined gross” is broad: wages, Social Security, pensions, annuities, interest, dividends, rental income, capital gains, virtually all sources. This is broader than federal AGI for most filers.
- Combined net worth (excluding the dwelling and qualified retirement accounts) cannot exceed $200,000 as of December 31 of the year before applying.
- Property must be the primary residence and the owner-occupant's legal residence.
- Credit is computed on the first $300,000 of assessed valuation; assessed value above that does not benefit from the credit.
The Tax Limit Formula: Why the HTC Is a Sliding Scale, Not a Flat Amount
Unlike most states' senior credits (which are flat dollar amounts), the Maryland HTC computes a tax limit based on a sliding scale of household income. The credit is the difference between your actual property tax (on the first $300K of assessed value) and that tax limit. The formula:
- 0% of the first $8,000 of household income
- 4% of the next $4,000 ($8,001 – $12,000)
- 6.5% of the next $4,000 ($12,001 – $16,000)
- 9% of household income above $16,000
Worked example. A senior with $40,000 household income: tax limit = 0 + (4% × $4,000) + (6.5% × $4,000) + (9% × ($40,000 - $16,000)) = $0 + $160 + $260 + $2,160 = $2,580. If the property tax bill on the first $300K of assessed value is $3,800, the HTC pays the difference: $3,800 - $2,580 = $1,220 credit. If the property tax bill is below $2,580, no credit.
This formula structure means the HTC is most valuable for low-income seniors in higher-tax jurisdictions. A Baltimore City senior with $20,000 income on a $200,000 home likely receives a credit covering most of the property tax. A senior with $55,000 income on the same home receives a much smaller credit, possibly zero.
The New Age 77+ Supplemental Credit (Effective Tax Year 2026)
Effective for tax year 2026, Maryland enacted a new credit specifically targeted at older seniors with higher incomes than the standard HTC accommodates. Structure:
- Age 77+: credit equals 25% of state income tax liability.
- Age 78: 50%.
- Age 79: 75%.
- Age 80 and older: 100% of state income tax liability.
- Income caps: $175,000 single filer / $250,000 joint filer, much higher than the standard HTC's $60,000.
Two important properties of this credit:
- It applies against state income tax, not property tax. The structure is a supplemental income tax credit for seniors, not a property tax reduction. So a senior with low state income tax liability gets less benefit from this credit even at the 100% tier, 100% of $1,500 in state tax is $1,500, not the senior's entire property tax bill.
- Mutually exclusive with the standard HTC. A senior cannot claim both in the same tax year. The choice usually comes down to: lower-income seniors with substantial property tax bills do better with the standard HTC; higher-income seniors 77+ with substantial state income tax liability do better with the supplemental credit.
County Supplements That Stack With the State HTC
Several Maryland counties run their own credit programs that layer on top of the state HTC (not the new 77+ supplemental). Three examples to indicate the range:
- Montgomery County: a separate Senior Tax Credit for age 65+ with longer-residency requirements, plus the Income Tax Offset Credit (ITOC) which is broader. Specific terms updated annually, confirm with Montgomery County DOF.
- Howard County: publishes a comprehensive credits page with both the state HTC supplement and county-specific senior and disabled credits. Tighter income limits than the state but additional dollar relief.
- Baltimore County: runs the Homeowners Tax Credit Supplement that adds to the state HTC for qualifying residents. Income limits typically aligned with the state HTC's $60,000.
County variation is wide. Some counties (Anne Arundel, Carroll, Frederick) offer their own programs with different age and income thresholds. Some (smaller, lower-budget counties) offer no supplement beyond the state HTC. Always check your specific county finance or treasurer's office.
Application: One Form, Two Deadlines That Matter
The standard HTC application is administered by the Maryland State Department of Assessments and Taxation (DAT) through Maryland OneStop (onestop.md.gov). Two relevant deadlines:
- April 15: if your application is submitted, complete, and not flagged for audit by this date, the credit appears directly on your July property tax bill. This is the preferred deadline for most homeowners.
- October 1: the absolute final deadline. Applications accepted after April 15 but before October 1 may result in the credit being applied as a refund or carry-forward rather than a direct bill reduction.
For the new 77+ supplemental credit, application is typically through state income tax filing (the credit lands on the income tax return) rather than through DAT. Maryland Comptroller's office processes; consult the most recent Form 502 or 502X instructions for the specific schedule.
Required documentation for the standard HTC: completed Form HTC-1 (or online equivalent), most recent federal tax return, Social Security award statement, all 1099s and W-2s, proof of net worth (statements showing assets above the dwelling and retirement accounts).
Frequently Asked Questions
I'm 78 with $90,000 household income and a $4,000 state income tax liability. Which credit do I take?
Run both calculations. The standard HTC: at $90,000 income you're above the $60,000 cap, so HTC isn't available, settling that path. The 77+ supplemental: at age 78 you get 50% of state income tax liability = $2,000 credit. The supplemental wins by default since it's the only one available to you. If your income drops below $60,000 in a future year, run the calculation again, at lower income, the standard HTC's formula often pays more dollars.
I'm 80, my Maryland income tax liability is $300, and my property tax is $5,500. Should I take the 77+ credit or the HTC?
The 77+ credit at age 80 is 100% × $300 = $300. The standard HTC, if your household income is also low (under $60,000) and net worth is under $200,000, computes a much larger credit on the actual property tax bill. With $20,000 household income on a $5,500 property tax bill, the standard HTC could cover thousands of dollars. The 77+ credit's 100% tier looks generous on paper but is capped at your state income tax liability, which for many retirees is small. Run the standard HTC calculation first; if it's available and produces a larger number, take it.
Does the $200,000 net worth test count my 401(k)?
No. The HTC net worth test specifically excludes “qualified retirement savings or Individual Retirement Accounts.” 401(k), IRA (traditional and Roth), 403(b), defined-benefit pension reserves, none of those count toward the $200,000 cap. What does count: brokerage accounts, savings accounts, CDs, taxable investment property, business interests, second homes. Many seniors who initially assume they're over the net worth cap discover they qualify once retirement accounts are excluded.
If I miss the April 15 deadline, do I lose the credit for the year?
No, but the timing of the credit changes. Applications submitted between April 16 and October 1 are still processed; the credit may be applied as a refund or carry-forward rather than appearing on the July tax bill directly. If you miss October 1 entirely, the credit is unavailable for that tax year, apply at the next cycle. Aim for April 15 for cleanest cash flow; October 1 is the hard deadline.
Can I stack the state HTC with my county's supplemental credit?
Yes. County supplemental credits are designed to layer on top of the state HTC, not replace it. A senior in Montgomery, Howard, or Baltimore County who qualifies for both the state HTC and the county supplement receives both. They do not stack with the new 77+ supplemental credit because that credit is mutually exclusive with the state HTC; if you take 77+, you forfeit both the standard HTC and any county supplement keyed to it. Run the math both ways before committing.
