Rob Hartley

Founder, AppealDesk · March 27, 2026

DC's Senior Property Tax Stack: Homestead Deduction, 50% Tax Reduction, and the 2% Assessment Cap

Updated April 2026

Three separate programs stack on the same primary residence in the District of Columbia: a universal Homestead Deduction ($91,950 off assessed value for tax year 2026, available to any owner-occupant); a Senior Citizen / Disabled Property Tax Reduction that cuts the resulting property tax by 50% for qualifying owners (DC Code §47-863); and a Senior Citizen Assessment Cap that limits annual taxable-assessment increases to 2% for qualifying seniors and disabled persons (DC Code §47-864) — five times more restrictive than the 10% cap that applies to general homesteaders.

DC's 50% tax reduction is, by percentage, one of the more generous senior tax benefits among U.S. jurisdictions. The catches are real, though: a 50% ownership-of-deed requirement that breaks for some joint-ownership and trust structures, and a household-wide AGI test at $163,500 (2026) that includes everyone living at the property except tenants, not just the senior applicant. This guide walks through each layer and how they stack.

Layer 1: The Universal Homestead Deduction ($91,950 for TY 2026)

Codified at DC Code §47-850, the Homestead Deduction reduces the taxable assessed value of an owner-occupied principal residence by a flat dollar amount before the District's real property tax rate is applied. For tax year 2026, that amount is $91,950. At DC's residential property tax rate of $0.85 per $100 of assessed value, the deduction translates to roughly $781 in annual tax savings — small in dollar terms compared to programs in higher-tax jurisdictions, but applied to every primary residence regardless of age, disability, or income.

Filing requirement: file Form ASD-100 with the DC Office of Tax and Revenue (OTR) once. Once granted, the Homestead Deduction stays in place automatically as long as the property remains your primary residence. Submit through MyTax.DC.gov.

Why this layer matters for seniors: the senior tax reduction and the 2% assessment cap both require the property to be receiving the Homestead Deduction first. If you somehow have not filed for the Homestead Deduction on your primary residence, the senior-specific layers don't apply until you do. File the ASD-100 first; the senior application sits on top.

Layer 2: The 50% Senior/Disabled Tax Reduction (§47-863)

The headline DC senior benefit. Once the Homestead Deduction is in place and the property qualifies for senior or disabled treatment, the property tax owed is computed at 50% of what the standard tax would have been. The mechanism in the statute: “multiplying the tax rate by 50% of an amount equal to the current tax year's taxable assessment.”

Eligibility under §47-863:

Age 65 or older, OR determined by the Social Security Administration to have a permanent and total disability. SSA determination is the disability standard — not self-attestation, not a private medical letter, not a state agency rating. The federal SSA determination is what DC accepts.
Owns at least 50% of the property or cooperative unit on the deed. A senior who owns 40% with a child holding the remaining 60% does not qualify. A senior who shared ownership with a spouse where each holds 50% does qualify.
Property must be receiving the Homestead Deduction (Layer 1 above).
Household AGI ≤ $163,500 for the 2026 cycle (based on tax year 2024 federal AGI). The threshold adjusts annually under the senior/disabled cost-of-living adjustment defined in §47-863. The original 2014 base was $125,000.

File the senior application via MyTax.DC.gov. Once approved, the 50% reduction continues year over year as long as eligibility persists; OTR may request periodic re-certification.

The Household AGI Test: Why “Income” Means More Than Just the Senior's Income

DC's income test under §47-863 is unusual in scope: the threshold applies to the combined federal AGI of everyone living at the property except tenants, not just the qualifying senior. This catches common multi-generational households:

A 70-year-old homeowner with $40,000 in retirement income, living with an adult child earning $130,000 — combined household AGI is $170,000, above the $163,500 cap. The senior does not qualify even though their personal income is well under the threshold.
A 68-year-old homeowner whose 30-year-old grandchild has moved in to provide care while completing graduate school — the grandchild's stipend or part-time income enters the household AGI calculation.
A senior renting one room in their home to a tenant — tenant income is excluded from the household AGI test (the statute specifically excludes tenants), so a true tenant relationship doesn't disqualify, but the line between “tenant” and “adult child paying token rent” is one OTR may scrutinize on audit.

Practical implication: if you're close to the threshold and have an adult child or other non-tenant household member, run the math on combined AGI before assuming you qualify. Coming in just over the line is one of the most common reasons DC senior applications are denied.

Is your DC assessment defensible?

The 50% reduction halves the tax on whatever taxable assessment is on file. If the underlying assessment is too high, the reduction operates against an inflated number. An assessment appeal is the lever to fix the base before the reduction layers on.

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Layer 3: The 2% Senior/Disabled Assessment Cap (§47-864)

Established by the “Seniors and Individuals with Disabilities Real Property Tax Increase Limit Amendment Act of 2022” and codified at DC Code §47-864, this layer caps the year-over-year increase in taxable assessed value at 2% for qualifying senior and disabled homestead properties. By comparison, the cap for general homesteaders is 10%, and there is no statutory cap at all for non-homestead properties.

The 2% cap applies to qualifying assessed value, not to the tax bill itself, so during a year when DC's general residential rate happens to rise, a senior with the assessment cap can still see a year-over-year tax increase — but the underlying valuation lift is held to 2% rather than the up-to-10% that would otherwise apply.

The cap was lowered from 5% to 2% effective Tax Year 2023 — a recent policy change. Older guides reference the 5% figure; the operative current cap is 2%.

Activation: the 2% cap applies automatically once your property is registered as a senior/disabled homestead under §47-863. There is no separate application for the cap layer. Approval of your §47-863 senior application implicitly turns on §47-864 protection.

How the Three Layers Stack on One Bill

Worked example for a qualifying DC senior in tax year 2026:

Start with assessed value (set by OTR each year). Suppose $750,000.
Apply the 2% senior assessment cap from prior years if applicable. If the prior taxable assessed value was $700,000, the new taxable assessed value is at most $714,000 (2% above $700,000), even if market value rose more.
Apply the Homestead Deduction: $714,000 - $91,950 = $622,050 of taxable assessed value.
Apply the residential tax rate ($0.85 per $100): $622,050 × 0.0085 = $5,287.43 in standard tax.
Apply the 50% senior reduction: $5,287.43 × 0.50 = $2,643.72 in tax owed.

Compare to the same home without senior status: assessed at the full $750,000 (10% cap if general homesteader, no cap if not), Homestead Deduction applied, tax computed at the full rate without the 50% reduction. The senior stack roughly halves the bill on top of any cap-driven assessment suppression.

Application: Form ASD-100 Plus Senior Section, via MyTax.DC.gov

DC handles applications electronically through MyTax.DC.gov. Steps:

If not already on the Homestead Deduction, file Form ASD-100 first.
For senior status, complete the Senior Citizen / Disabled Property Owner Tax Relief application within MyTax.DC.gov — typically processed alongside or after the ASD-100.
Required documentation: proof of age (driver's license, passport, or DC ID); for disability claims, SSA determination letter; proof of ownership (deed); most recent federal tax return showing household AGI.
If you cannot apply electronically, OTR Customer Service at (202) 727-4TAX (4829) handles paper applications and accommodation requests.

Application timing is more flexible than most jurisdictions — DC allows applications at any time, with the relief applying starting from the next tax half-year billing. There is no fixed annual deadline like the April 30 cutoff in Delaware or the July 15 cutoff in Colorado.

Frequently Asked Questions

My personal income is $50,000 but my adult son lives with me and earns $120,000. Do I qualify?

No, not for the 50% senior reduction. DC's income test under §47-863 looks at combined household AGI of everyone living at the property except tenants, not just the senior applicant's income. Combined $170,000 is above the $163,500 cap for 2026. You'll still receive the universal Homestead Deduction (which has no income test) and the 2% assessment cap if you've registered as a senior/disabled homestead, but the headline 50% tax reduction is not available while household income exceeds the threshold. If your son moves out, or if his income drops below the threshold combined, reapply.

My spouse and I own the home jointly (50/50). Both of us are 67. Do we both need to apply, or does one application cover both?

One application is sufficient if at least one spouse meets the eligibility tests (age 65+ AND owns at least 50% of the property). The 50%-of-deed requirement is satisfied since each spouse holds 50%, and the property qualifies under either spouse's name. The household AGI test is computed jointly, so both incomes (and any other household members' incomes) are combined against the $163,500 threshold. The reduction applies to the property, not to a per-person calculation.

I'm 64 but the SSA has determined me permanently and totally disabled. Can I claim the senior reduction?

Yes. §47-863 explicitly creates two qualifying paths: age 65+ OR a permanent-and-total-disability determination by the Social Security Administration. The disability path has no minimum age. Required documentation is the SSA determination letter — DC accepts the federal SSA determination as authoritative. Veterans with VA disability ratings may need additional documentation since VA and SSA use different standards; if you have only a VA rating, contact OTR to confirm what alternative documentation they accept.

I held my property in a revocable living trust for estate planning. Does that affect my 50%-of-deed requirement?

Generally not for revocable living trusts where the senior is the grantor and beneficiary, but DC OTR may request additional documentation showing the senior's effective ownership of the property within the trust structure. The §47-863 language refers to the senior owning “at least 50%, in whole or in part” of the property — the “in whole or in part” clause is read to encompass beneficial ownership through revocable trusts. If you've transferred to an irrevocable trust or to an LLC, the analysis is more complex and may not satisfy the requirement. Surface the trust structure when filing; don't leave it ambiguous on the application.

I see references to a 5% assessment cap. Is that still current?

No. The 5% figure was the senior/disabled assessment cap from 2019 through Tax Year 2022. The “Seniors and Individuals with Disabilities Real Property Tax Increase Limit Amendment Act of 2022” lowered the cap to 2% effective Tax Year 2023, and 2% is the operative current rate. Older guides referencing 5% are out of date. The 10% cap that applies to general homesteaders is unchanged from when it was set in 2006.

When does the relief actually take effect after I apply?

DC's billing runs on half-year cycles (March and September). The senior reduction takes effect on the next half-year billing after OTR processes your application. So an application approved in April 2026 reduces the September 2026 bill but not the March 2026 bill. There is no fixed annual deadline; apply when ready, and the reduction begins on the next billing cycle. If you apply close to a billing date, processing time matters — OTR turnaround varies. File earlier rather than later within a half-year period.