# How to File Mississippi Sales Tax Online in 2026

Canonical: https://trykintsugi.com/blog/how-to-file-mississippi-sales-tax-online
Published: 2026-09-01

How to file Mississippi sales tax in TAP: filing frequency, the 20th-of-the-month due date, zero returns, the 2% discount, penalties, and interest.

Mississippi sales tax is filed online through the **Taxpayer Access Point (TAP)**, the Department of Revenue's free portal. Returns are due on or before the **20th day after the end of the reporting period**, and you must both file the return and pay the tax by that date. The Department requests electronic filing, and requires it in some cases, such as when you have more than one sales tax account or business location.

This guide covers who files and how often, how to get into TAP, how to file a return, how to handle Mississippi's local taxes, due dates, zero returns, amended returns, payment, the vendor discount, and what late filing costs.

This article is educational information, not tax advice. Filing rules, thresholds, and penalties can change, so confirm current requirements with the [Mississippi Department of Revenue](https://www.dor.ms.gov/business/sales-use-tax/reporting-requirements) before you file.

## Mississippi sales tax filing at a glance

- **Who administers it:** Mississippi Department of Revenue.
- **Online portal:** Taxpayer Access Point (TAP), at [tap.dor.ms.gov](https://tap.dor.ms.gov/_/). Online filing is free.
- **Filing frequency:** Annual, quarterly, or monthly, based on the tax you remit each year.
- **Due dates:** On or before the 20th day following the end of the reporting period.
- **Zero returns:** Required for every reporting period, even when no tax is due.
- **Payment:** Filing and paying are two separate steps in TAP. The Department's FAQ says online sales and use tax payments are made by ACH debit.
- **Vendor discount:** 2% of the tax due for timely filing and payment, capped at $50 per reporting period and $600 per year.
- **Economic nexus:** Out-of-state businesses with sales into Mississippi that exceed $250,000 over any twelve-month period.

## Who has to file, and how often

A separate permit is required for each business location, and the permit does not expire as long as the holder stays in the same business at the same location. Our [sales tax permit](/blog/sales-tax-permit) overview explains the general registration process, and our [Mississippi sales tax guide](/sales-tax-guides/usa/mississippi) covers state specifics. If you sell products with unusual treatment, see our posts on [what is exempt from sales tax in Mississippi](/blog/what-is-exempt-from-sales-tax-in-mississippi) and [sales tax on clothing in Mississippi](/blog/what-is-the-sales-tax-on-clothing-in-mississippi).

The Department's FAQ says that effective July 1, 2018, businesses located outside Mississippi with sales into the state that exceed $250,000 over any twelve-month period have substantial economic presence and must register with the Department to collect and remit tax. Nexus also arises from owning property in Mississippi or being represented in the state by employees or agents who service customers there.

Filing frequency is based on the annual amount of tax you remit. The Department's reporting requirements page sets these levels:

| Frequency | Annual tax remitted |
| --- | --- |
| Annual | Less than $600 |
| Quarterly | $600 to $3,599 |
| Monthly | More than $3,599 |

The Department's other FAQ pages describe frequency slightly differently: one says quarterly returns can be filed under $3,600 and monthly returns are required above it, and another says retailers with average liability of $300 or more per month must file monthly. Because these pages do not match exactly, confirm your assigned frequency in TAP or with the Department. The Department reviews accounts each year, adjusts frequencies as needed, and notifies you of a change. Seasonal businesses cannot file only for the months they operate; a return is required for every period.

## Before you start: get into TAP

You need a Mississippi sales tax permit before you can file. TAP lets you register a new business or add accounts to an existing one, and once you have an account you can file and amend returns, make payments, and view account activity and correspondence. All you need is internet access. Register through the Department's website, then add your sales tax account to your TAP login.

Before filing, gather your total sales for the period, the tax collected, sales made in Tupelo or Jackson if any, and records for any exempt or resale sales. For wholesale sales, see our [Mississippi resale certificate](/resale-certificates/mississippi) guide. The Department's FAQ says it does not accept blanket certificates and expects a letter of exemption issued by the Department, such as a permit, a Material Purchase Certificate, a Direct Pay Permit, or a Letter Ruling.

## Step-by-step: filing a return in TAP

The Department does not publish a click-by-click walkthrough on the pages we reviewed, so the flow below reflects what those pages say. The screens in TAP may differ, so follow the prompts in the portal.

1. **Log in to TAP** and open your sales tax account.
2. **Start the return for the period** you are filing.
3. **Enter your sales and tax due.** Mississippi uses a total sales basis unless the Commissioner has given permission to defer tax on credit sales until collected. If you have no sales, enter a zero on the total tax due line.
4. **Submit the return, then pay.** Completing the return and paying the tax are two separate steps, and you must do both to meet the filing requirement.
5. **Keep confirmation.** Save your confirmation and retain your records. The Department's FAQ says to keep records for at least four years.

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## Local rate pitfalls

Mississippi's general sales tax rate is 7%, with reduced rates for certain sales and exemptions provided by law. The Department's FAQ says the state has two local levies at the city level and none at the county level: Tupelo adds 0.25% on retail sales made from taxpayers within its corporate limits, and Jackson adds 1% on certain retail sales made within its corporate limits. Mississippi also has tourism and economic development taxes in many cities and counties, typically on hotels, motels, restaurants, and bars, and the Department publishes a listing of them. Our [Mississippi sales tax calculator](/us-sales-tax-calculator/mississippi) shows current rates by location.

## Due dates and the weekend rule

Returns are due on or before the 20th day following the end of the reporting period, and you can see them alongside other states on our [Mississippi sales tax due dates](/sales-tax-due-dates#mississippi) page. For example, a monthly return for March is due April 20. The Department's pages we reviewed do not list a separate calendar of quarterly or annual due dates, so check your period's due date in TAP.

When the due date falls on a weekend or holiday, the Department says returns and payments must be filed online or postmarked by the first working day after the due date to be timely. Extensions are not generally available; the Commissioner may grant one for good cause, such as a natural disaster, and the tax remains due with interest possible for late payment.

## Filing a zero return

You must file even if you had no sales. The Department's FAQ says a return is required for each reporting period even though no tax is due, and that with no sales you enter a zero on the total tax due line. Failing to file on time can lead to a billing notice, penalties, interest, and eventually liens.

## Amending a return

If you find an error on a return you already filed, file an amended return. The Department's E-Services page says TAP lets you amend returns online. The pages we reviewed do not state a sales tax amendment deadline, so confirm the time limit with the Department.

## Payment methods

- **TAP:** The Department says online payments for sales and use tax are made electronically by ACH debit from your bank account, with no filing fee.
- **Credit card or e-check:** The Department's E-Services page lists credit card and e-check payments. Its FAQ notes a convenience fee for those options, so confirm eligibility and fees before relying on them.
- **Paper:** If you do not file online, the Department mails a pre-addressed return about 30 days before the due date. Mail it with payment to P.O. Box 960, Jackson, MS 39205. A return is treated as filed on the date of the post office cancellation mark.

## Penalties and interest for late payment

The Department says interest begins the month after the due date and penalty applies immediately. Its sales tax FAQ says that delinquent or deficient tax due to negligence or failure to comply may bring a penalty of 10% of the deficiency or delinquency, or interest of one-half of one percent (0.5%) per month, or both, from the due date until paid. Confirm the amount that applies to your situation with the Department.

## Common mistakes to avoid

- **Filing but not paying.** In TAP, completing the return and paying the tax are separate steps, and both are needed.
- **Skipping zero returns.** Every period needs a return, including seasonal off-months.
- **Missing the discount cutoff.** The vendor discount requires timely filing and payment, and it is recalculated to zero for all locations if a return is late or underpaid.
- **Forgetting local taxes.** Tupelo and Jackson have city levies, and many places have tourism taxes.
- **Relying on a blanket certificate.** The Department does not accept blanket certificates.
- **Assuming one account covers every location.** Each business location needs its own permit.

## The vendor discount

Mississippi allows certain taxpayers a 2% discount of liability for collecting, complying with the statutes, and filing and paying all taxes when due. The discount is limited to $50 per calendar reporting period and $600 per calendar year. No discount is allowed on tax for utility services, the 7% wholesale tax on beer and alcoholic beverages, the 8% wholesale tax on food and drink for full-service vending machines, or tax on contracting. The Department's FAQ says the tax must be paid by the 20th of the month in which it is due.

## If you receive a sales tax notice

A missed or late return often leads to a letter. Our [Mississippi sales tax notices guide](/notice-hub/usa/mississippi) explains what notices from the Mississippi Department of Revenue mean, why businesses usually receive them, and what to do next. It also points to how to ask for penalty relief where the state publishes a process. Check the date on the notice, match it to your filing period, and follow the instructions on the notice itself.

## More state filing guides

Filing in more than one state? These step-by-step guides cover the portals, due dates, and penalties in other states. See them all in our [state-by-state guide to filing sales tax online](/blog/how-to-file-sales-tax-online-by-state).

- [How to file Alabama sales tax online](/blog/how-to-file-alabama-sales-tax-online)
- [How to file Louisiana sales tax online](/blog/how-to-file-louisiana-sales-tax-online)
- [How to file Tennessee sales tax online](/blog/how-to-file-tennessee-sales-tax-online)

## Let Kintsugi file for you

If you sell in Mississippi and other states, [Kintsugi's sales tax filing software](/product/sales-tax-filing-software) prepares and files returns on each state's assigned schedule and remits payment. Monitoring across every US state is free, so you know when you cross a threshold. Filing starts at $75 per filing, with no per-state subscription. See [pricing](/pricing), [start free](https://auth.trykintsugi.com/en/signup), or [book a demo](/kintsugi-demo).

## Frequently asked questions

### Can I file Mississippi sales tax online for free?

Yes. The Department says online filing is free of charge and that TAP provides free online access to tax accounts. A convenience fee applies to credit card or e-check payments.

### When is Mississippi sales tax due?

On or before the 20th day following the end of the reporting period. If the 20th is a weekend or holiday, the return and payment are timely if filed online or postmarked by the next working day.

### Do I have to file if I had no sales?

Yes. Mississippi requires a return for every reporting period even when no tax is due. Enter a zero on the total tax due line.

### How often do I file Mississippi sales tax?

It depends on the tax you remit each year. The Department's reporting requirements page lists annual filing under $600, quarterly from $600 to $3,599, and monthly above $3,599. Confirm your assigned frequency in TAP.

### What is the economic nexus threshold in Mississippi?

Sales into Mississippi that exceed $250,000 over any twelve-month period for a business located outside the state.

### Is there a discount for filing on time?

Yes. Eligible taxpayers get 2% of the tax due, up to $50 per reporting period and $600 per year, if they file and pay on time.

## Sources

Checked September 29, 2026.

- Mississippi Department of Revenue, [Reporting requirements](https://www.dor.ms.gov/business/sales-use-tax/reporting-requirements)
- Mississippi Department of Revenue, [Mississippi sales and use taxes](https://www.dor.ms.gov/business/sales-use-tax/mississippi-sales-and-use-taxes)
- Mississippi Department of Revenue, [Business tax frequently asked questions](https://www.dor.ms.gov/business/business-tax-frequently-asked-questions)
- Mississippi Department of Revenue, [E-Services](https://www.dor.ms.gov/e-services)
- Mississippi Department of Revenue, [Taxpayer Access Point](https://tap.dor.ms.gov/_/)