Tulsa County resource · Treasurer
Most people who fall behind on Oklahoma property tax do not do it deliberately. They miss the half-payment rule, which is unusual enough that it catches people every year, and by the time they realise, the whole year is delinquent rather than half of it. Here is the actual calendar.
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1 January. The assessment date. The Assessor places a fair cash value on the property as of this date each year.
October. The Assessor certifies the tax roll.
November or December. The Treasurer mails statements.
31 December. The first half, or the full amount, is due. Tax of $25 or less must be paid in full. Mortgage servicers must pay in full by this date.
31 March. The second half is due, but only if the first half was actually paid by 31 December.
Second Monday in June. The resale auction for properties delinquent long enough to reach it.
The Treasurer's published note is worth repeating: where a due date falls on a weekend or a holiday when the county headquarters is closed, the next business day is treated as the due date.
This is the single most misunderstood thing about Oklahoma property tax, so it is worth being precise.
You may pay the whole year by 31 December, or you may pay half by 31 December and the remaining half by 31 March. Those are the options.
What you may not do is pay nothing by 31 December and then pay half in March. The Treasurer states it plainly: at least one half must be paid before 1 January, first half payments cannot be accepted after 31 December, and if half is not paid before 1 January the entire amount becomes due and subject to the statutes governing delinquent taxes.
So missing December by a week does not put you half a year behind. It puts you a full year behind, on the whole amount, with interest running.
Delinquent Oklahoma property tax accrues interest at one and a half per cent per month. That is eighteen per cent a year, which compounds a modest bill into a serious one faster than most owners expect.
Notices of tax lien are mailed to the record owner for unpaid taxes and special assessments, and tax liens for unpaid amounts are published.
If a property is scheduled for the June auction, the Treasurer includes a second notification of tax resale with the tax statements, and the list of properties scheduled for auction is published in a local newspaper and made available on the Treasurer's website and in their office.
Call the Tulsa County Treasurer on 918-596-5071 and ask for a taxpayer information representative. They will ask for one of three things: the parcel or tax roll item number, the owner's name, or the property address.
That call gives you the total delinquent amount owed on the parcel, which is the number you actually need before making any decision. Estimating it from old statements does not work because of the accruing interest.
If you do not know your parcel number, our guide to Tulsa County property records explains how to find it.
One caution the Treasurer publishes prominently: pay through their own payment page or their named processor, not through unaffiliated third party payment websites.
There is a statutory change here that matters and that older advice online does not reflect. The Treasurer's own notice states that effective 1 November 2025, to remove a property from the June Resale Auction, payment must be made before the start of the auction, under Title 68 of the Oklahoma Statutes, Section 3113.
There is also an exemption route. An Application for Exemption from Tax Resale, with evidence of eligibility, may be submitted to the Treasurer before resale each year. Taxes, interest, costs and fees continue to accrue while the exemption is claimed, the homeowner must reapply and qualify each year, and if they become ineligible or fail to apply the Treasurer proceeds with the sale. The Treasurer's office can send the application on request.
If any of that might apply to you, call them rather than working it out from a website including this one. Our article on how houses are lost at county tax sale covers the wider process.
How it works
Call the Treasurer on 918-596-5071 with your parcel number, name or address and ask for the total delinquent amount. Everything else follows from that figure.
How many years behind, and whether the parcel has appeared on a resale list. Those two facts decide whether this is urgent or merely expensive.
Paying it, a payment arrangement, an exemption if you qualify, or selling before the auction are all options. Which fits depends on equity and time, and delinquent tax does not stop a sale because it is paid from the proceeds at closing.
Common questions
The first half, or the full amount, is due by 31 December. If the first half was paid on time, the second half is due by 31 March. Where a due date falls on a weekend or holiday when the county headquarters is closed, the next business day is treated as the due date.
No, and this is what catches people. The Treasurer states that at least half must be paid before 1 January and that first half payments cannot be accepted after 31 December. If half is not paid, the entire amount becomes due and subject to the delinquent tax statutes.
One and a half per cent per month, which is eighteen per cent a year. That is why a bill that seemed manageable becomes a serious one over a few years.
Call the Tulsa County Treasurer on 918-596-5071 and ask for a taxpayer information representative. They will need your parcel or tax roll item number, the owner's name, or the property address.
The second Monday in June. The list of properties scheduled for auction is published in a local newspaper, on the Treasurer's website and in their office.
The Treasurer's notice states that effective 1 November 2025, payment must be made before the start of the auction to remove a property, under Title 68 Section 3113. Older guidance online may not reflect that change.
There is an Application for Exemption from Tax Resale which, with evidence of eligibility, may be submitted before resale each year. Taxes and interest continue to accrue, and the homeowner must reapply and qualify annually. Call the Treasurer on 918-596-5071 to request it.
Tulsa County becomes the involuntary purchaser, and those properties may later be sold through the Commissioners' Sale process.
Yes. Delinquent tax is paid from the proceeds at closing by the title company. You do not have to clear it first, and it is one of the more common misconceptions we hear.
If you escrow, yes, and mortgage servicers must pay the full amount by 31 December. The Treasurer mails statements to record owners where tax information went to a servicer who failed to remit, so check rather than assume.
The Treasurer publishes a prominent warning against unaffiliated third party payment sites and directs payers to their own payment page or their named processor. Use that.
That is an Assessor matter rather than a Treasurer one, and there are protest deadlines. The Assessor's office can explain their procedures, and payments made under protest have their own deadlines with the Treasurer.
At one and a half per cent monthly, three years of delinquency roughly adds half again to the original amount before costs and fees. Get the exact figure from the Treasurer rather than estimating.
Establish the exact figure and the timeline first, then look at payment, an exemption if you qualify, or a sale before the auction if there is equity to protect. Selling at auction destroys equity that a sale beforehand preserves.
Other situations
Most sales involve more than one of these at once. If two apply to you, start with whichever is driving the deadline.
Where we buy
Each town has its own page setting out what selling there actually involves, including the local quirks that affect a sale.
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