How to pay Sullivan County, TN property tax
✓ Verified — Last verified October 24, 2026
Payment details from the official sources for Sullivan County. Check the tax year and parcel on your bill before submitting a payment.
Pay on the official siteNot tax or legal advice; confirm with your county.
Payment methods and fees
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Accepted methods
Officially published
Published installment dates
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Tax year 2026. Dates retain the year published by the source.
Official offices
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Sullivan County Trustee
Sources for these instructions
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Read the source quotations (10)
https://sullivantntrustee.gov/property-tax/
In Person at Trustee’s Office Payable by credit card, debit card, or electronic check. Phone Payments Mail Drop Box:
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https://sullivantntrustee.gov/property-tax/
Current fees are: 2.5% for credit and debit cards, $1.25 for e-checks. Additional $.30 charge for phone payments.
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https://sullivantntrustee.gov/property-tax/
On March 1, County taxes become delinquent and begin to accrue 1.5% interest per month.
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https://www.comptroller.tn.gov/office-functions/pa/property-taxes/assessment-schedule.html
May 20 | Assessments should be complete and change notices mailed. | 67-5-504(b) and 67-5-508(a)(1) & (3)
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https://www.comptroller.tn.gov/office-functions/pa/property-taxes/assessment-schedule.html
Current year's taxes become due and payable on the first Monday in October.
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Continue with your property
Common questions
Where can I pay Sullivan County property tax?
Official payment portal: https://www.citisenportal.com/. In person, Online card or electronic check, Phone, Mailed check, Drop box
Updated , from cited verification dates. Individual sources may have earlier checks.