Oklahoma Property Tax Calculator

How this calculator works

Oklahoma property tax is governed by Title 68, Chapter 31 of the Oklahoma Statutes (the Ad Valorem Tax Code) and constrained constitutionally by Okla. Const. Art. X. Three features distinguish Oklahoma from neighboring states: a county-elected assessment ratio between 11% and 13.5% (Art. X § 8 and 68 O.S. § 2802), a 5% homestead / 10% non-homestead taxable-value cap (Art. X § 8B — the "Tax Limit Amendment" — implemented at § 2890), and a senior valuation freeze (§ 2890.1) that permanently locks the homestead's fair-cash value for qualifying owners aged 65 or older.

The calculation runs in five steps:

• fair cash value (county assessor's figure, § 2817)
• capped fair cash under § 2890 — the lower of the assessor's figure or prior-year-capped × 1.05 (homestead) or × 1.10 (non-homestead)
• effective fair cash — if the § 2890.1 senior freeze applies, use the locked figure
• gross assessed value = effective × county-elected ratio (most counties 11%)
• net taxable = gross assessed − $1,000 standard homestead − $1,000 additional senior (when income at or below $25,000)
• annual tax = net taxable × (millage ÷ 1,000)

The 100% disabled-veteran exemption (§ 2888) short-circuits the entire formula — the homestead's bill is zero regardless of value.

The county-elected assessment ratio — Art. X § 8 and 68 O.S. § 2802

Oklahoma is unusual among U.S. states in delegating the assessment ratio to county election. Under Okla. Const. Art. X § 8 counties may elect any ratio between 11% and 13.5% of fair cash value. The implementing framework is at 68 O.S. § 2802. In practice the vast majority of Oklahoma counties — including all five of the largest by population (Oklahoma, Tulsa, Cleveland, Canadian, Comanche) — elect the constitutional minimum of 11%. A handful of smaller counties have historically elected slightly higher figures; pull the binding ratio from the county assessor for any planning use.

The 11% ratio is among the lowest in the country. Compare:

• South Carolina: 4% owner-occupied / 6% other
• Oklahoma: 11% (county-elected, 11–13.5% band)
• Kansas: 11.5% residential
• Tennessee: 25% residential
• Georgia: 40% statewide uniform
• Florida, North Carolina: 100% (no ratio reduction)

The low ratio is offset by a higher combined millage (90–122 mills in Oklahoma's major counties versus 78 mills in Wake County, North Carolina at 100%). The net effective rate lands at roughly 1.0%–1.3% of fair-cash value — comparable to the U.S. national median.

The 5% homestead cap — Art. X § 8B and 68 O.S. § 2890

Oklahoma voters adopted the Tax Limit Amendment (Okla. Const. Art. X § 8B) in 1996 to constrain year-over-year growth of the fair-cash value used for assessment. The amendment is implemented at 68 O.S. § 2890. Two cap percentages apply:

• 5% per year for owner-occupied homesteads
• 10% per year for non-homestead property (rentals, second homes, investment property)

The cap operates similarly to Florida's "Save Our Homes" cap (3%): once a property has been assessed in a prior year, the current-year fair-cash value used for assessment is the lower of (a) the assessor's current-year market figure and (b) prior-year-capped × (1 + cap).

The cap is reset to current market value by:

• Sale of the property — the new owner's first-year fair cash is whatever the assessor determines, with no prior cap to constrain it
• Improvements of $1,000 or more in fair-cash value (new construction, additions, major renovations, accessory structures)

Routine maintenance and cosmetic updates do not reset. Change of homestead status (converting from owner-occupied to rental) changes the cap percentage from 5% to 10% but does not reset the cap figure.

On a long-held homestead in an appreciating market the gap between actual market value and the capped figure can grow large over time. An OKC homestead purchased at $150,000 in 2014, held through 10 years of 5% statutory growth, would have a 2024 capped figure of about $244,000 — even if the current market figure had risen to $400,000. The owner pays tax on $244,000, not $400,000.

The senior valuation freeze — 68 O.S. § 2890.1

The senior valuation freeze is Oklahoma's most powerful homestead protection for retirees. It locks the homestead's fair-cash value permanently at the figure on file in the year of first qualification. Eligibility:

• Age 65 or older on January 1 of the qualifying year
• The property is the owner's homestead (permanent residence)
• Gross household income at or below the county H.U.D. median family income for the qualifying year — refreshed annually by the Oklahoma Tax Commission

Once the freeze is granted, the locked fair-cash figure does not change year over year, even if the owner's income later rises above the county median or the county's median itself changes. The freeze ends only when the property is sold or ceases to be the qualifying homestead. Apply on Form 994 with the county assessor by March 15 of the qualifying year.

For an OKC homestead worth $200,000 in 2018 when the owner first qualified at age 65, the freeze locks the assessment basis at $200,000 forever. By 2026 the same home might be worth $280,000 at market, but the assessment basis remains $200,000 — a 28% reduction in taxable basis that compounds year over year while the freeze remains in place. The 2026 H.U.D. median family income for Oklahoma County is approximately $80,800; for Tulsa County approximately $79,500. These are high enough that most middle-income retirees qualify.

The $1,000 homestead exemption — 68 O.S. § 2887

Oklahoma's standard homestead exemption is a $1,000 reduction in assessed value for any owner-occupied homestead. The exemption is small in absolute terms: $1,000 off a typical $27,500 gross assessed value (i.e., a $250,000 home at 11%) is a roughly 3.6% bill reduction. Compare to Florida's $50,000 homestead, Texas's $100,000 school homestead, or Georgia's $2,000 standard homestead.

Apply on Form 921 with the county assessor by March 15. The exemption attaches to the owner-occupied residence and does not transfer with the property at sale — the new owner must reapply.

68 O.S. § 2887(B) adds an additional $1,000 exemption — for a total of $2,000 in assessed-value reduction — for owners who meet the homestead test AND have gross household income at or below $25,000. The $25,000 figure is set by statute and is not indexed to inflation, so its real value erodes year over year. Apply on Form 994 by March 15.

The 100% disabled veteran total exemption — 68 O.S. § 2888

Oklahoma's most generous property-tax benefit. A veteran with 100% permanent and total service-connected disability as certified by the U.S. Department of Veterans Affairs — OR an unremarried surviving spouse of such a veteran — receives a TOTAL EXEMPTION of the homestead from ad valorem taxation. No income limit. No age requirement. No fair-cash-value ceiling.

The qualifying veteran's homestead has zero property tax regardless of fair-cash value. Apply on Form 998 with the county assessor with VA certification of the 100% rating. Unlike Florida's veteran benefits (which scale with disability percentage) or North Carolina's $45,000-of-value exclusion under N.C. § 105-277.1C, Oklahoma's § 2888 is binary and total: 100% rating equals zero tax.

Common millage rates by county

Combined millage (county + city + school district + special districts) for 2025 residential primary residences:

| County | Assessment ratio | Millage (mills) | $250K homestead tax | | --- | --- | --- | --- | | Canadian (Yukon/Mustang) | 11% | 100 | $2,650 | | Cleveland (Norman) | 11% | 109 | $2,889 | | Oklahoma County (OKC) | 11% | 112 | $2,968 | | Comanche (Lawton) | 11% | 115 | $3,048 | | Tulsa County | 11% | 122 | $3,233 | | Rural / other (typical) | 11% | 90 | $2,385 |

Millage is quoted in mills (dollars per $1,000 of taxable value): 112 mills equals $112 per $1,000 of taxable value, or 11.2% of taxable value. Pull the binding figure from the county treasurer's annual rate certification. Millage varies year to year with school bond issues, city levies, and special-district adjustments.

A worked example — $250,000 OKC homestead, age 40

A $250,000 home in Oklahoma County (OKC). Owner is 40, household income $80,000, not a veteran, no prior cap on file, no freeze.

• Fair cash value: $250,000
• § 2890 cap: not binding (no prior-year capped figure)
• Effective fair cash: $250,000
• Gross assessed value: $250,000 × 11% = $27,500
• § 2887 standard homestead exemption: −$1,000
• § 2887(B) additional senior: not applicable (under 65)
• Net taxable: $27,500 − $1,000 = $26,500
• Tax owed: $26,500 × 112 ÷ 1,000 = $2,968
• Effective rate: 1.187% of fair cash value

The effective rate sits just under 1.2% — within a tenth of a point of the U.S. national median. The 11% assessment ratio is doing real work; without it (i.e., at 100% as North Carolina does) the bill on the same home at the same millage would be $27,888.

A worked example — same home with prior cap binding

Same $250,000 OKC homestead, but the owner has held the property for several years and the prior-year capped fair-cash value on file is $200,000. The 5% cap caps current-year fair-cash at $200,000 × 1.05 = $210,000 — well below the $250,000 market figure.

• Fair cash value (market): $250,000
• § 2890 capped figure: $200,000 × 1.05 = $210,000
• Effective fair cash: $210,000
• Gross assessed value: $210,000 × 11% = $23,100
• § 2887 homestead exemption: −$1,000
• Net taxable: $22,100
• Tax owed: $22,100 × 112 ÷ 1,000 = $2,475
• Annual savings vs market basis: $2,968 − $2,475 = $493

The cap saved $493 in a single year and will continue to save more as the gap between market and capped figures widens. After 5 more years of 5% capped growth versus continued market appreciation, the savings can compound to over $1,500 per year — and the savings are reset to zero only when the owner sells.

A worked example — Tulsa homestead, age 70, $20K income

A $250,000 home in Tulsa County. Owner is 70, household income $20,000, not a veteran, no freeze yet. Tulsa's combined millage is 122 mills.

• Fair cash value: $250,000
• Gross assessed value: $250,000 × 11% = $27,500
• § 2887 standard exemption: −$1,000
• § 2887(B) additional senior exemption: −$1,000 (income at or below $25,000)
• Net taxable: $25,500
• Tax owed: $25,500 × 122 ÷ 1,000 = $3,111

The $1,000 additional senior exemption is small — it saved $122 on this bill. The much larger benefit available to this owner is the § 2890.1 senior valuation freeze, which would lock the $250,000 fair-cash figure permanently. Filing Form 994 to claim the freeze is the right move whenever a qualifying owner has held the homestead in an appreciating county for several years.

A worked example — OKC homestead with senior freeze locked at $150K

Same $250,000 OKC homestead. Owner is 70, household income $20,000, and the § 2890.1 senior valuation freeze is in place at a locked fair-cash figure of $150,000 (granted in a prior year when the home was worth $150,000).

• Fair cash value (market): $250,000
• § 2890.1 frozen figure: $150,000
• Effective fair cash: $150,000 (freeze wins)
• Gross assessed value: $150,000 × 11% = $16,500
• § 2887 + § 2887(B): −$2,000
• Net taxable: $14,500
• Tax owed: $14,500 × 112 ÷ 1,000 = $1,624
• Annual savings vs unfrozen with senior stack: ($26,500 × 112/1000) − $1,624 ≈ $1,344

The freeze produces the largest single-year savings of any Oklahoma exemption short of the 100% disabled-veteran total exemption. And it compounds: as market value continues to rise the gap between the locked $150,000 and the actual market widens, and the annual savings grow alongside it.

A worked example — 100% disabled veteran

Same $250,000 OKC homestead. Owner is 50 years old, household income $90,000, and is a 100% service-connected disabled veteran.

• Fair cash value: $250,000
• § 2888 total exemption applies
• Tax owed: $0

The § 2888 exemption is binary and total. It zeros the bill regardless of fair-cash value, income, or age. The qualifying veteran in this example saves $2,968 per year compared to the non-veteran baseline — and that savings persists year over year as long as the property remains the qualifying homestead.

Comparing Oklahoma to surrounding states

Effective property-tax rates on residential primary homesteads:

| State | Effective rate (typical) | Why | | --- | --- | --- | | Arkansas | ~0.65% | 20% assessment ratio + Amendment 79 cap | | Missouri | ~0.95% | 19% residential ratio | | Oklahoma | ~1.0%–1.3% | 11% ratio + small $1K exemption + 5% cap | | Kansas | ~1.35% | 11.5% residential ratio | | Texas | ~1.6%–2.0% | 100% assessment, no income tax |

Oklahoma's 11% assessment ratio is among the lowest in the country but the small $1,000 homestead exemption (compared to Texas's $100,000 school homestead) and relatively high combined millage (100–122 mills in major counties) push the effective rate to about the U.S. national median. The 5% homestead cap under Art. X § 8B provides meaningful year-over-year protection in appreciating markets — comparable to Florida's 3% Save Our Homes cap but with a slightly more generous cap percentage.

The senior valuation freeze under § 2890.1 is the structural feature that makes Oklahoma especially favorable for retirees in major counties. By contrast, Texas senior caps freeze school-district tax but not city or county levies; Florida's Save Our Homes is a 3% cap not a freeze; and Oklahoma's § 2890.1 produces a true freeze with no annual reapplication once granted.

Common errors to avoid

• Confusing fair-cash value with taxable value. Oklahoma's two-step reduction — first the 11% assessment ratio, then the $1,000 homestead exemption — means the "assessed" figure on the tax statement is about 11% of fair cash. A $250,000 home does not show up as $250,000 on the tax statement; it shows up as $27,500 gross assessed, $26,500 net taxable. Don't apply the millage to the fair-cash figure directly.
• Forgetting the prior-year cap on a long-held homestead. The § 2890 5% cap binds against the prior-year capped figure, not the current market. On a homestead held through 10 years of appreciation, the capped figure can be 30%–50% below the current market figure. Pull the prior-year capped value from the previous tax statement; do not use the current market figure.
• Missing the senior freeze. The § 2890.1 freeze is the single most impactful property-tax benefit available to most Oklahoma retirees and is widely under-claimed. Form 994 by March 15 in the year of first qualification (age 65+ with income at or below county H.U.D. median). The freeze persists for life on the qualifying homestead.
• Assuming the disabled veteran exemption requires age 65. The § 2888 100% disabled veteran total exemption has no age requirement. A 30-year-old veteran with a 100% VA rating qualifies on the same terms as a 75-year-old veteran. Many younger veterans don't apply because they assume the senior provisions apply.
• Treating the $1,000 homestead exemption as large. It isn't. The $1,000 exemption produces roughly a $112 bill reduction in OKC. The real homestead protection in Oklahoma is the 5% cap under Art. X § 8B and the senior valuation freeze under § 2890.1.
• Applying late. The March 15 deadline for Forms 921, 994, and 998 is firm except in limited hardship circumstances at the county assessor's discretion. File even if eligibility is uncertain — the assessor determines qualification.
• Confusing the senior exemption income limit with the freeze income limit. The $1,000 additional senior exemption under § 2887(B) has a fixed $25,000 statutory limit. The § 2890.1 freeze income limit is the county H.U.D. median family income — far higher (~$80,800 in Oklahoma County for 2026). An owner over $25,000 in income may not qualify for the additional exemption but typically still qualifies for the freeze.

Tools, not advice. Confirm the binding county-elected assessment ratio, the parcel's prior-year capped fair-cash value, the applicable combined millage, and exemption eligibility (and the current county H.U.D. median for the senior freeze) with the county assessor and the Oklahoma Tax Commission before relying on any result for planning purposes.