Picture two identical houses on the same Tulsa County street, with the same square footage and the same market value on the Assessor's books. One sold 10 years ago and the other sold three years ago. The Tulsa County Assessor's own FAQ uses this example to explain why those two homes can carry "a significantly different taxable value."
That difference catches people at the closing table. The tax figure a buyer sees for a home is the seller's, built up over years of capped growth. The buyer doesn't inherit it. On Nov. 3, Oklahoma voters will decide on a measure that would slow how fast those capped values can rise. It would leave alone the rule that wipes the cap out when a home sells.
The cap belongs to the owner, and it ends at the sale
Under the Oklahoma Constitution, the taxable fair cash value of a home with a homestead exemption can rise no more than 3% a year. For other locally assessed real property, the limit is 5%. The same section says the cap doesn't apply in any year when title is "transferred, changed, or conveyed to another person." In that year, the property is assessed at its fair cash value.
The Tulsa County Assessor answers the question directly. Under the heading "Why are my taxes so much higher than what my realtor projected?" the office says the cap on taxable value "was removed when you purchased the property," citing Title 68 O.S. §2817.1. Improvements work the same way. If an owner adds an in-ground pool or an addition, the value of that new work goes onto the taxable value in full.
Here's how one value becomes a tax bill in Tulsa County:
- Fair Cash Value (Market): what a knowledgeable buyer and seller would agree on. The Assessor recalculates it every year, and it has no cap.
- Taxable Fair Cash Value: the capped figure. It can rise 3% a year with a homestead exemption and 5% without one, unless title transfers or new improvements are added.
- Assessed Value: currently 11% of taxable fair cash value. Exemptions come off this figure, and millage rates apply to it.
Your valuation notice lists both the taxable value and the market value. The space between them is the part of the bill the current owner has avoided and the next owner won't.
Tulsa prices are rising faster than the cap
When market values outpace the cap, that space grows. In August 2026, the median sale price for residential property in Tulsa County was $290,000, up 5.45% from $275,000 in August 2025. Year to date through August, the median was up 3.94%. Both figures come from Greater Tulsa Association of REALTORS® MLS data compiled by RE STATS Inc., in a report dated Sept. 14, 2026.
Either rate is above 3%. Even in a moderate year, the market value of a homesteaded house can pull away from its taxable value, and the gap compounds for as long as the same owner stays.
The Assessor's office has shown how large this gets across the whole county. Its Property Taxation 101 presentation puts Tulsa County's 2025 real property fair market value at $84,658,700,362 against a taxable value of $65,195,507,000. That's a difference of roughly $19.5 billion. It's a countywide total for all real property and has several causes, so it isn't the discount on any one home. It does show how much value sits outside the tax base until properties sell. The same presentation says the cap "shifts tax burden to the least able to pay and to areas not going up in value."
What SQ 847 would change, and what it keeps
State Question 847 would lower the homestead and agricultural cap from 3% to 1.75%. It would lower the cap on other real property, including rentals and commercial property, from 5% to 4%. Both changes would start in tax year 2027. The proposed text keeps the transfer rule, so a home that sells would still be reassessed at fair cash value for that year. As Oklahoma Watch notes, the measure wouldn't lower property tax rates.
So the lower cap would slow tax growth for people who stay in their homes. The starting point for a buyer would stay the same, because it's still the full fair cash value. The following illustration shows how that plays out. It assumes a homestead with market and taxable value both at $200,000 in 2026, and market value rising 3.94% a year, which matches Tulsa County's year-to-date pace through August 2026. It isn't a forecast.
| After five years of growth | Market value a buyer starts from | Taxable value at 3% cap | Taxable value at 1.75% cap |
|---|---|---|---|
| Taxable fair cash value | $242,629 | $231,855 | $218,123 |
| Assessed value at 11% | $26,689 | $25,504 | $23,994 |
| Gap below market value | None | $10,774 | $24,506 |
In this example, the staying owner's taxable value ends up about $13,700 lower under the 1.75% cap. If the home then sells, the buyer starts from the same $242,629 under either cap. In this example, the lower cap more than doubles the gap between owning and buying.
How both sides describe it
Supporters and opponents of SQ 847 agree on how the measure works and disagree on whether it's a good trade.
House Speaker Kyle Hilbert and Senate President Pro Tem Lonnie Paxton sponsored the measure. Oklahoma Watch reported that supporters say it would help households and business owners facing inflation, and quoted Hilbert saying it "would give the lowest cap on growth for homestead property in the entire country." The Oklahoma Farm Bureau has endorsed it.
Opponents say the issue is who pays. The Oklahoma Policy Institute summarizes critics' argument that the measure benefits long-term owners and shifts costs to new buyers, because a sale resets taxable value. In a separate analysis, the institute cites University of Central Oklahoma professor Ryan Kiggins, who estimates that local revenue would fall by $42 million in the first year and $241 million by the fifth. Oklahoma Watch also reported an Oklahoma City estimate that the city could lose $683 million in bonding capacity over 20 years.
For a Tulsa buyer, the takeaway holds under either outcome. The tax history on a listing describes the seller's situation, and the buyer's first year starts fresh.
For seniors, a move restarts the clock
This affects older homeowners the most, because they've often owned the longest and may also have the senior valuation freeze.
For the 2026 tax year, Tulsa County's senior valuation freeze requires a homestead, head-of-household status, age 65 or older before Jan. 1, and gross household income of no more than $90,300. It freezes taxable value, not the tax bill. Levies can still go up. According to the Assessor's senior freeze page, the freeze stays with the property and ends when title is transferred, so an eligible owner has to apply again on the new home.
The calendar matters here. The Oklahoma Tax Commission's 2026 application form requires the applicant to own and live in the homestead on Jan. 1. A move in the middle of the year generally means the new home can't qualify until a later tax year, when that Jan. 1 test is met. Current-year applications are due by March 15, or within 30 days after the mailing date on a valuation-increase notice.
The homestead exemption has its own dates, and they fall right after a holiday-season closing:
- Basic homestead exemption: takes $1,000 off assessed value. Tulsa County's requirements include living in the home by Jan. 1, having the deed notarized by Jan. 1, and having it recorded by Feb. 1.
- After a move: a new homestead application is required. It can be filed any time of year, but it must be filed by March 15 or within 30 days of a valuation-increase notice to count for the current year.
- Additional homestead exemption: takes another $1,000 off assessed value for households with gross income of $30,000 or less in the previous calendar year. Applicants 65 and older don't have to renew every year, but they must tell the Assessor if their income goes over the limit.
If SQ 847 passes, it adds income tiers for homestead owners 65 and older whose income is above the freeze limit. Their annual cap would range from 0.35% to 1.75%, depending on how far above the limit they are. The Oklahoma Policy Institute says it wouldn't change the current senior freeze program. Either way, those protections stay with the owner and the property, and they don't carry over to a new home.
Quick answers
Does the seller's tax bill show what I'll pay? Not after you buy. The cap is removed at purchase, and the Assessor's Tax Estimate Calculator gives a closer starting estimate. Total millage depends on the overlapping county, city, school, technology center and other district levies for that address.
When would SQ 847 take effect? Only if voters approve it on Nov. 3, 2026. The new caps would start with tax year 2027.
If I sell, does my senior freeze move with me? No. It ends when title transfers, and the new home needs its own application once you meet the Jan. 1 requirements.
This post is general information, not legal, tax or financial advice. Before you make decisions, please check your own situation with the Tulsa County Assessor's office or a tax professional.
If you're weighing a sale or a downsize and want to understand your property tax situation before and after the move, including the January dates, Joanna Ford can walk you and your family through the whole timeline, from listing to the exemption forms on the new home. Let's Connect.
