Mississippi Quarterly Tax Calculator 2026
Rates reviewed · Mississippi Department of Revenue
Mississippi is transitioning to a flat 4% rate by 2026. Current flat rate is 5%. Quarterly payments required if annual liability exceeds $200.
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Tax Information Notice
This content is for informational and educational purposes only. It does not constitute tax, legal, or financial advice. Tax laws change frequently. Always consult a qualified CPA or Enrolled Agent for your specific situation.
Mississippi quarterly tax questions
How much is the quarterly tax for freelancers in Mississippi?
Freelancers in Mississippi pay federal self-employment tax (15.3% of net self-employment income), federal income tax at their bracket, and Mississippi income tax of 5% flat. This calculator applies 5% as a representative Mississippi rate for freelancer-level income; the top marginal rate is 5% flat.
When are quarterly estimated taxes due in Mississippi for 2026?
Mississippi follows the federal estimated tax schedule for 2026 — Q1: April 15, 2026, Q2: June 16, 2026, Q3: September 15, 2026, Q4: January 15, 2027. The Q3 payment is due September 15, 2026.
Do I have to make Mississippi estimated tax payments?
Mississippi requires estimated payments once you expect to owe $200 or more in state income tax for the year. The state form is Form 80-106. Payments can be made online through Taxpayer Access Point. Filing and paying federal estimated tax does not cover the state amount — they are separate payments.
Where do I pay Mississippi estimated taxes online?
Mississippi accepts online estimated tax payments through Taxpayer Access Point, run by the Mississippi Department of Revenue. Federal payments go through IRS Direct Pay or EFTPS separately.
What happens if I underpay estimated taxes in Mississippi?
The IRS charges an underpayment penalty based on the amount underpaid and the number of days late. Paying at least 90% of this year's tax or 100% of last year's (110% if your AGI exceeded $150,000) meets the federal safe harbour. Mississippi applies its own interest and penalty on late or short state payments.
State payments are administered by the Mississippi Department of Revenue via Taxpayer Access Point.
Tax Information Notice
This content is for informational and educational purposes only. It does not constitute tax, legal, or financial advice. Tax laws change frequently. Always consult a qualified CPA or Enrolled Agent for your specific situation.