Most businesses collect sales tax correctly at checkout, then fumble the hand-off to the state. Sales tax remittance means sending the tax you already collected from customers to the state or local tax authority, along with a filed return that reports those transactions. Collection is the easy part. Remittance is where deadlines, penalties, and personal liability live. State tax authorities like the Texas Comptroller require electronic filing and payment on a fixed schedule.
This guide covers what remittance means, how to remit step by step, filing deadlines by state, and what happens if you skip it.
What Does It Mean to Remit Sales Tax?
Remitting sales tax means sending the tax you collected from customers to the state, together with a filed return that reports your sales. It has two parts: filing the return and paying the tax. The money was never revenue. Collected sales tax is trust-fund money you hold for the state, which is why failing to remit it can trigger personal liability for owners.
Because the tax is not yours, states treat non-remittance far more harshly than an ordinary unpaid bill. You are a collection agent for the state, and the state expects its money on time.
What Is the Difference Between Collecting and Remitting Sales Tax?
Collecting and remitting sales tax are two separate obligations. Collection means charging the correct combined rate at the point of sale. Remittance means filing a return and paying the collected tax on the state’s schedule. The gap between them is a liability on your books. Money collected but not yet remitted belongs to the state, never to your cash flow.
| Question | Collecting sales tax | Remitting sales tax |
|---|---|---|
| What happens | You charge the buyer the correct combined rate | You file a return and pay the state |
| When | At each transaction | On a monthly, quarterly, or annual schedule |
| What it needs | Correct rate, sourcing, and taxability | Reported gross, taxable, and exempt sales, plus payment |
| Risk if wrong | Under- or over-charging the customer | Penalties, interest, and personal liability |
Treating collected tax as spendable cash is the classic mistake. Spend it, and you are short when remittance comes due.
How Did South Dakota v. Wayfair Change Sales Tax Remittance?
The Supreme Court’s June 21, 2018 decision in South Dakota v. Wayfair, Inc. let states require remittance from sellers with no physical presence. The 5-4 ruling in South Dakota v. Wayfair overturned the physical-presence rule from Quill Corp. v. North Dakota (1992). South Dakota’s model set economic nexus thresholds of $100,000 in sales or 200 transactions. By June 2021, all 45 sales-tax states plus D.C. had adopted economic nexus.
Economic nexus means a sales obligation triggered by revenue or transaction volume, not physical presence. The U.S. Government Accountability Office confirmed 45 states plus D.C. adopted it by June 2021. Many states have since dropped the 200-transaction prong because it burdened small sellers of low-value items.
| State | 200-transaction prong | Sales threshold | Effective date | Source |
|---|---|---|---|---|
| South Dakota | Removed (SB 30) | $100,000 | July 1, 2023 | SD Dept. of Revenue |
| California | Never adopted | $500,000 | April 1, 2019 | CDTFA |
| Massachusetts | Removed (was 100) | $100,000 | Oct. 1, 2019 | Mass. Dept. of Revenue |
| Louisiana | Removed | $100,000 | Aug. 1, 2023 | La. Remote Sellers Commission |
| Wisconsin | Removed | $100,000 | Feb. 20, 2021 | Wis. Dept. of Revenue |
What Types of Sales Tax Nexus Trigger a Remittance Obligation?
Five kinds of nexus create a remittance obligation: physical, economic, affiliate or click-through, marketplace, and inventory nexus. Physical nexus comes from offices, employees, or inventory in a state. Economic nexus comes from crossing a revenue or transaction threshold. Inventory nexus is the common trap: Amazon storing your Fulfillment by Amazon (FBA) goods in a state creates physical nexus you may not know about.
Check thresholds state by state with the Commenda US nexus exposure guide before you decide where to register. Even fully exempt business-to-business sales can count toward economic nexus in some states.
How to Remit Sales Tax: A Step-by-Step Guide
Remitting sales tax follows five steps, from finding your obligations to paying the state. Work them in order.
Step 1: Determine where you have nexus
Run a nexus study across every state you sell into before you register anywhere. Cross-reference your sales against each state’s threshold. Registering where you have no obligation only adds cost and filings. Start with the Commenda US nexus exposure guide for current thresholds.
Step 2: Register for a sales tax permit
Register with each state Department of Revenue (DOR) before you collect a cent. Collecting without a permit is illegal in most states. You typically need your legal business name, Employer Identification Number (EIN) or Social Security Number (SSN), entity type, North American Industry Classification System (NAICS) code, responsible party details, estimated sales, and bank details for Automated Clearing House (ACH) payment. Multi-state sellers can register once through the Streamlined Sales Tax Registration System (SSTRS), which covers 24 member states (23 full members plus Tennessee as an associate).
Registering signals nexus to the state. If you have past unregistered liability, evaluate a Voluntary Disclosure Agreement first, explained in the penalties section below.
Step 3: Determine combined rates, sourcing, and taxability
Your combined sales tax rate equals the state rate plus county, city, and special-district rates, across thousands of US jurisdictions. Sourcing decides which rate applies. Destination-based states, which are the majority, use the rate at the buyer’s ship-to address. Origin-based states use the seller’s location rate for in-state sales. Look up a specific transaction with your state DOR rate tool or the Commenda sales tax calculator, which returns rates only, not nexus exposure.
Step 4: Collect tax and manage exemption certificates
An exemption certificate documents a sale that would otherwise be taxable, such as a resale, nonprofit, or government purchase. Collect one for any untaxed sale that would otherwise be taxable. Validate that it uses the correct form for the state, carries a registration number and signature, and has not expired. Without a valid certificate on file, you owe the tax in an audit. Certificates can expire and require renewal, annually in some states.
Step 5: File the return and pay the tax
Returns report gross sales, taxable sales, and exempt sales broken out by jurisdiction. File through the state’s online portal. Pay by ACH debit, ACH credit, or card. File even when you owe nothing: a zero return is still required once you are registered, and skipping it draws penalties. High-volume filers may owe prepayments; California requires them for larger accounts.
What Are Sales Tax Filing Frequencies and Deadlines by State?
States assign your filing frequency based on your tax liability. Higher liability means more frequent filing: monthly, quarterly, or annual. The state sets your frequency at registration and can reassign it as your volume changes. Deadlines vary, but the 20th of the month after the reporting period is the most common pattern. Some states use the last day of the month instead.
| State | Filing frequencies | Return due date | Source |
|---|---|---|---|
| Florida | Monthly, quarterly, semiannual, annual | Late after the 20th of the following month | Fla. Dept. of Revenue |
| Texas | Monthly, quarterly, annual | 20th of the following month (annual: Jan. 20) | Texas Comptroller |
| California | Quarterly with prepayments, monthly, annual | Last day of the month after the period | CDTFA |
| New York | Monthly, quarterly, annual | 20th of the month after the period | NY Dept. of Taxation and Finance |
If a deadline falls on a weekend or holiday, it usually moves to the next business day. Track every state in one place with the Commenda compliance calendar.
How Does Sales Tax Remittance Work for Online and Multi-State Sellers?
Online sellers must track economic nexus in every state they ship into, register where they cross a threshold, and manage a calendar of different rates, frequencies, and deadlines. There is no federal sales tax and no single national return. Each state means a separate registration, portal, and due date. The operational burden compounds fast as you add states.
This is where automation earns its keep. See Commenda’s guide to multi-state sales tax compliance for the operational playbook.
Do Marketplace Facilitators Remit Sales Tax for You?
Yes. In states with marketplace facilitator laws, the marketplace (Amazon, Etsy, Walmart) collects and remits sales tax on sales made through its platform. You keep the obligation for your direct sales, and you may still need to register and report marketplace sales as a deduction. In Colorado, marketplace facilitators must collect and remit, and marketplace sellers stopped collecting on facilitated sales as of October 1, 2019.
Shopify is not a marketplace facilitator. It calculates tax but does not remit for you, so Shopify sellers handle their own collection and remittance.
How Does Drop Shipping Affect Sales Tax Remittance?
Drop shipping creates a three-party chain: the customer, the retailer, and the supplier who ships directly to the buyer. The supplier may have to charge the retailer tax unless the retailer provides a valid resale certificate that the ship-to state accepts. Some states reject out-of-state resale certificates, which can force the retailer to register there. This is a well-known multi-state trap.
Is Sales Tax Due on Digital Goods and SaaS?
It depends on the state, and definitions vary widely. A growing majority of states tax digital goods, and many tax software as a service (SaaS). Florida does not tax electronically delivered software or SaaS, per the Florida Department of Revenue. Texas taxes SaaS as a data processing service, with 20% of the charge exempt and 80% taxable, per the Texas Comptroller.
Map each product to the correct tax code once. Misclassifying SaaS or digital goods as standard tangible property creates false liabilities that some tax engines auto-debit from your account.
What Happens If You Don’t Remit Sales Tax?
You face penalties and interest on the unpaid tax, audit assessments with a multi-year lookback, and personal liability for owners and officers because collected tax is trust-fund money. Willful failure to remit can be a criminal offense. In New York, willful failure to remit is a crime, while late filing draws civil penalties and interest, per the New York Department of Taxation and Finance.
A Voluntary Disclosure Agreement (VDA) lets an unregistered business come forward before the state finds it. A VDA typically limits the lookback to 3 to 4 years and waives penalties. Registering first usually forfeits VDA eligibility, and an audit that discovers pre-registration nexus can carry an unlimited lookback.
| Jurisdiction | Penalty and interest | Source |
|---|---|---|
| New York (late filing) | 10% of tax due the first month, plus 1% each additional month, minimum $50 | NY Dept. of Taxation and Finance |
| New York (failure to pay) | 10% the first month, plus 1% each month, up to 30% | NY Dept. of Taxation and Finance |
| Florida (late) | 10% of tax owed, minimum $50 | Fla. Dept. of Revenue |
What Are the Most Common Sales Tax Remittance Mistakes?
The most common remittance mistakes are avoidable with a system. They cluster around taxability, exemptions, rates, deadlines, and cash flow:
- Misclassifying product or service taxability, especially digital goods, SaaS, and bundled products.
- Missing or expired exemption certificates, leaving you owing the tax in an audit.
- Incorrect rate calculations from wrong origin or destination sourcing.
- Missing deadlines across a multi-state filing calendar.
- Spending collected tax as cash flow, then coming up short at remittance.
- Unknown FBA inventory nexus from goods Amazon stores in other states.
- Skipping zero returns when no tax was collected.
- Collecting tax without registering first, a bigger red flag to auditors than never collecting.
- Overlooking self-reported use tax on free samples and promotional materials.
- Registering without first checking for back liability, forfeiting a VDA.
Sales Tax Compliance Checklist
Use this checklist to keep remittance under control across every state where you sell:
- [ ] Review nexus, physical and economic, in every state you ship into.
- [ ] Keep registrations current where you have crossed a threshold.
- [ ] Map combined rates, sourcing, and product taxability.
- [ ] Keep valid, unexpired exemption certificates on file.
- [ ] Maintain a filing calendar with each state’s frequency and deadline.
- [ ] Schedule zero returns so you file even with no tax due.
- [ ] Reconcile remittance to the tax you actually collected.
- [ ] Reassess nexus as your sales grow.
Which Sales Tax Software Automates Remittance?
Sales tax software automates rate calculation, return preparation, filing, and payment across states. The payoff is accuracy, time savings, multi-state scalability, and integration with your accounting stack. Avalara and TaxJar are established options with broad rate coverage. Commenda tracks nexus, calculates rates, and files and remits across states, and it connects to 100+ ERPs, APIs, and custom integrations.
Be honest about fit. A US-only seller with a single sales channel may be well served by a lighter point solution. A business selling across many states, channels, and product types needs a platform that scopes registrations to real nexus and files everywhere at once. Enterprise Resource Planning (ERP) integration matters most when your order volume outgrows manual reconciliation.
How Commenda Helps With Sales Tax Remittance
Commenda’s global indirect tax software tracks your physical and economic nexus across states, calculates the right rates, and files and remits your returns. It replaces the spreadsheet-and-reminder system most finance teams rely on, so nothing slips a deadline.
Check where you owe with the US nexus exposure guide and price a specific transaction with the sales tax calculator. Book a demo to get a free nexus exposure assessment and see every state where you owe remittance.
