Sales Tax in Hydro, Oklahoma in 2025

We'll walk you through how the sales tax rate is determined for Hydro and address some common questions you may have. We'll also cover how to collect, audit, and remit sales tax in Hydro.

Plus, we’ll share the best solution that will ensure you are always compliant across the entire sales tax lifecycle.

Disclaimer: Our sales tax data is updated on a quarterly basis. 

Hydro Sales Tax Rate 2025

Hydro is located in Oklahoma, United States. Its minimum sales tax rate is 9.88%, and its maximum sales tax rate is 10.50%. These rates include local and state sales tax rates.

Here is how the Hydro sales tax rates breaks down:

Tax Jurisdiction	Min. Rate	Max. Rate
State Tax	4.50%	4.50%
County Tax	0.88%	1.50%
City Tax	4.50%	4.50%
Combined Rate	9.88%	10.50%

Sales Tax Rates in Hydro by Zip Codes and Districts

Below are the sales tax rates in Hydro broken down by districts and zip codes:

District	Zip Codes	Combined Sales Tax Rate
BLAINE COUNTY|HYDRO TOWN (BLAINE COUNTY)	73048	9.88%
CADDO COUNTY|HYDRO TOWN (CADDO COUNTY)	73048	10.50%

County Sales Tax in Hydro

Hydro overlaps with 2 counties in Oklahoma. Below, you can see the county sales tax rates for each one:

County	Sales Tax Rate
Blaine County	0.88%
Caddo County	1.50%

How Does the Hydro Sales Tax Compare to the Rest of Oklahoma?

The lowest sales tax rate you can find in Oklahoma stands at 4.50%. The highest sales tax rate in the state is 10.50%. Here’s how Hydro’s sales tax rates compares against these rates:

• The minimum sales tax rate (9.88%) is 5.38% higher than the state's lowest rate and 1.63% lower than the highest rate.
• The maximum sales tax rate (10.50%) is 6.00% higher than the state's lowest rate and 1.00% lower than the highest rate.

To give you a better idea, here’s a comparison of Hydro sales tax rates with a few other cities in Oklahoma:

City	Sales Tax Rates
Woodlawn Park	4.50%
Kemp	5.00%
Hitchita	6.50%
Council Hill	7.15%
Hydro	9.88%-10.50%
Fort Towson	10.00%
Snyder	11.50%

You can also compare the sales tax rate of Hydro against the Oklahoma cities closest in population size:

• Porter's sales tax rate is 9.80%
• Vici's sales tax rate is 10.25%

What Creates Sales Tax Nexus in Hydro?

Hydro follows the same sales tax nexus rules as Oklahoma and doesn’t have any additional local tax requirements.

Read More: Check out this detailed guide on Sales Tax in Oklahoma.

You may have sales tax nexus in Hydro if you satisfy one or more of these criteria:

• Physical Location: Businesses with a physical presence in the state, such as an office, store, or warehouse.
• Employees: Companies with employees or representatives that solicit orders on their behalf.
• Economic Nexus: Out-of-state businesses whose gross sales into Oklahoma exceed $100,000 in the previous or current calendar year.

Learn more about sales tax nexus and when you’re required to collect sales tax.

What Products Are Exempt from Hydro Sales Tax?

Hydro does not impose any special sales tax rules beyond those set by Oklahoma.

The following items are exempt in Hydro:

• Drugs prescribed by a physician for the treatment of a human being.
• Durable medical devices and prosthetic devices, like hearing aids, including repair parts and accessories.
• Newspapers and periodicals, whether purchased as a single copy or a subscription.
• Most food and food ingredients, including fish, yogurt, and more.
• Natural or artificial gas and electricity, when sold exclusively for residential use, are exempt from state sales tax. However, they remain subject to any applicable municipal and county sales taxes in effect at the time of sale.

Who Needs a Sales Permit in Hydro?

Unless the state mentions otherwise, you should collect sales tax on every sale and rental of tangible personal property in Hydro.

How to Collect Sales Tax in Hydro

Oklahoma is a “destination-based” sales tax sourcing state. This means that when you make taxable sales to an address in Oklahoma from inside or outside the state, you should charge the sales tax rate at the buyer’s ship-to address. 

Learn more about origin-based and destination-based sales tax sourcing here.

How to File and Pay Sales Tax in Hydro

You can file Hydro sales tax returns using the these methods:

• Automated: Let Zamp handle your Oklahoma sales tax filing and remittance so you never have to look at a sales tax return again!
• File and pay online: File at the Oklahoma Taxpayer Access Point (OKTAP) Website.