Payment Due Dates

When Taxes are Due & How They are Paid

Property Taxes in Wyoming become due and are billed on September 1 of each year. Taxes may be paid either in halves or in full.
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If Paid in Two Installments

  • 1st Installment: Due by November 10. The first installment of the taxes become delinquent on November 11.
  • 2nd Installment: Due by May 10. The second installment becomes delinquent on May 11.
No interest will be assessed on the 1st installment if the first and second installments are paid on or before December 31. 

If Paid in One Installment

The entire tax amount must be paid by December 31. For example, the 2019 taxes are billed on September 1, 2019. The first half of the taxes must be postmarked by November 10th, and the second half must be postmarked by May 10, 2020. However, if the entire tax is paid by December 31, 2019, all the interest on the first half is waived.

Important Notification

You will not receive a receipt for your property tax payment unless requested. If you want a receipt, please attach a note with your payment requesting one. We can mail a receipt or email a receipt, just include your email address with your payment.  If you would like to request a receipt now, please contact our office by phone (307)783-0333 or email us at

Mortgage Companies


If a mortgage company has requested a copy of your tax notice to make payment provisions on your behalf, there will be a message directly below the address window on the tax bill reading: **A duplicate billing has been requested by your mortgage company. Even if your mortgage company pays your taxes, you will still receive a tax notice on September 1 of each year. This notice is for your records.

If the mortgage message does not appear on your billing and you do pay into an escrow account, please contact your mortgage company.

Each year mortgage companies request the information on property tax accounts in which they hold mortgages on. The Treasurer's Office sends them the information by a report or in electronic format. Mortgage companies remit the tax payments in November and May. By law, they are required to pay your taxes in the maximum number of payments allowed by the state. Therefore, they do not have the option of paying your taxes all at once.

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