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Updated 2025 Tax Year

Gregory County
Property Tax Guide

Everything you need to know about property taxes in Gregory County, SD. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
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Quick Facts
Tax Rate
0.50% effective rate (varies by district due to special taxing jurisdictions)
Exemptions
5+ Available
Section 1

How Property Tax Works

Gregory County, South Dakota operates under a property tax system that funds essential local services including county government operations, road maintenance, schools, and special districts. Property taxes are the primary revenue source for these services, with the county collecting taxes on behalf of multiple taxing jurisdictions including the county, school districts, townships, and various special service districts.

The effective property tax rate in Gregory County is approximately 0.50% for the 2025 levy year, though actual rates vary significantly by location within the county due to different combinations of special taxing districts. Property owners may be subject to additional assessments from school districts, road districts, fire districts, and other local improvement districts depending on their specific location. The South Dakota assessment system uses market value as the basis for taxation, with properties assessed at 100% of market value as determined by the county assessor.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
County General~0.15%Basic county operations and services
County Road & Bridge~0.08%Road maintenance and infrastructure
School Districts~0.20%Local school district operations
Special Districts~0.07%Fire, ambulance, water, and other special services
Total Base Rate~0.50%Base rate for FY 2025-2026

Note: Actual rates vary by specific location within Gregory County based on which school district and special taxing districts serve your property. Some areas may have additional assessments for bond payments, capital improvements, or other special levies that can increase the total rate.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Gregory County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Gregory County are additional tax bills issued when there are changes in property ownership, new construction, or improvements that increase a property's assessed value during the tax year. These taxes cover the difference between what was originally billed and what should have been billed based on the property's current status.

Common triggers include: completion of new construction or major improvements, property splits or combinations, successful assessment appeals that increase value, and correction of assessment errors. The supplemental tax is calculated by applying the current tax rate to the difference between the new and old assessed values, prorated for the remaining portion of the tax year. For example, if a $50,000 home addition is completed in January and increases your assessed value, you would owe supplemental taxes on that $50,000 (approximately $250 at 0.50% rate) for the remaining tax year.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value: $300,000 (100% of market value)
  • Less: Owner Occupied Credit: -$4,000 (if applied for)
  • Net Taxable Value: $296,000
  • Annual Tax: $1,480 (at 0.50% rate)
  • Monthly Escrow: $123

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value: $600,000 (100% of market value)
  • Less: Owner Occupied Credit: -$4,000 (if applied for)
  • Net Taxable Value: $596,000
  • Annual Tax: $2,980 (at 0.50% rate)
  • Monthly Escrow: $248

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value: $1,000,000 (100% of market value)
  • Less: Owner Occupied Credit: -$4,000 (if applied for)
  • Net Taxable Value: $996,000
  • Annual Tax: $4,980 (at 0.50% rate)
  • Monthly Escrow: $415

Note: All tax credits require separate application and are not automatically applied. Rates may vary based on special district assessments in your area.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Gregory County require property tax escrow accounts for borrowers with less than 20% down payment. Your lender collects monthly tax payments along with your mortgage payment and pays the county treasurer directly when taxes are due. Escrow payments are calculated by dividing your annual tax bill by 12 months, plus a buffer amount typically equal to 2-3 months of payments.

Lenders must provide an annual escrow analysis showing how your payments were used and any adjustments needed for the coming year. If your property taxes increase due to reassessment or rate changes, your monthly escrow payment will be adjusted accordingly. Property owners with escrow accounts should verify that payments were made on time by checking with the Gregory County Treasurer's office, as you remain ultimately responsible for ensuring taxes are paid even when using escrow services.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
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Section 6

Frequently Asked Questions

Q: When are property taxes due in Gregory County for FY 2025-2026? A: Property taxes are typically due April 15th and October 15th each year. Contact the Gregory County Treasurer's office to confirm exact dates as they may vary slightly.

Q: What tax credits are available and how do I apply? A: The Owner Occupied Credit provides up to $4,000 reduction in taxable value for primary residences. You must file an application with the Gregory County Assessor by March 1st annually. Senior citizen and disabled veteran credits may also be available with separate applications required.

Q: How does the Homestead Credit work? A: South Dakota's homestead exemption caps annual assessment increases at a certain percentage (typically 10%) for owner-occupied homes. This limits growth in your assessed value, not your market value. You must apply annually with the county assessor to receive this benefit.

Q: When are properties reassessed? A: Gregory County conducts property reassessments on a cyclical basis, typically every 3-6 years depending on the area. New construction and major improvements trigger immediate reassessment.

Q: How do I appeal my property assessment? A: Assessment appeals must be filed with the Gregory County Board of Equalization by April 15th following the assessment notice. Contact the county assessor's office for appeal forms and procedures.

Q: What are the penalties for late payment? A: Late payments incur penalties and interest charges. Contact the Gregory County Treasurer for specific penalty rates and collection procedures.

Q: Can I pay property taxes online? A: Check with the Gregory County Treasurer's office for available online payment options, as services may vary and processing fees may apply.

Q: Why did my taxes increase if the tax rate stayed the same? A: Tax increases can result from property reassessment, new special district assessments, bond measures, or loss of previously applied tax credits that weren't renewed through proper application.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
Tax Doc
Tax-Rates.org — The 2024-2025 Tax Resourcemylrc.sdlegislature.gov
02
Tax Doc
Calculating the Dollars Needed to Reduce Property Taxesmylrc.sdlegislature.gov
03
Tax Doc
Property Tax | South Dakota Department of Revenuedor.sd.gov
04
Tax Doc
Municipal Tax | South Dakota Department of Revenuedor.sd.gov
05
Tax Doc
South Dakota, Dept of Revenue, Sales and Use Tax Guide.nrc.gov
06
Relief Programs | South Dakota Department of Revenuedor.sd.gov
07
County
Codified Law 28-13-32 - County commissioners' objections to ...sdlegislature.gov
08
Tax Doc
Tax Exempt Propertymylrc.sdlegislature.gov
09
County
GREGORY COUNTY AUDIT REPORT For the Two Years ...legislativeaudit.sd.gov
10
County
Exhibits and Appendices to County Revenues and ...mylrc.sdlegislature.gov
All sources verified as of 2025 Tax Year

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