What it means
Sales tax is collected from the customer at the point of sale, but it never belongs to the seller. The business acts as a collection agent for the government, holds the money and then pays it over on a regular schedule.
The permit is the official registration that makes this arrangement legal. Requirements vary by state and country, and the name varies too, with seller's permit, resale certificate registration and vendor licence all in use.
Most places require a permit before the first taxable sale, and some charge a fee while others issue it free. A business selling in more than one state may need a permit in each state where it has a tax obligation.
The permit also lets a business buy goods for resale without paying sales tax to its supplier. The business shows its permit number to the supplier on a resale certificate and the tax is collected only when the final customer buys.
This avoids the same item being taxed twice. Collected sales tax should be tracked in a separate liability account, not treated as revenue.
At each filing date the business reports its taxable sales, calculates the tax due and pays it. Late or missing filings usually lead to penalties and interest, and the person running the business can be personally liable in some places.
Online selling has made this more complicated, because rules about when a seller must register depend on its sales volume or activity in each state. Sellers should check the rules in each place they sell, since thresholds and rates are set by the relevant authority and change from time to time.
Record keeping supports the whole arrangement. A business should keep sales records, exemption certificates and filing confirmations for the period the tax authority requires, which is often several years.
Good records make an audit routine instead of stressful.
In practice
Real-world examples
Example 1
A woman opening a gift shop applies for a seller's permit online before her first sale. She receives a permit number within days and displays it in the shop. Her accountant uses it to set up the monthly filing calendar and a reminder for the renewal date.
Example 2
A craft maker who sells at weekend markets finds that the market organiser requires proof of a permit. She registers, buys her supplies tax-free using a resale certificate and charges tax only on her own sales. This keeps her costs lower while she builds up the business.
Example 3
An online electronics seller passes a state's sales threshold and must register there. Finance obtains a permit, configures the checkout to add the correct tax and schedules quarterly returns. It also checks whether the same threshold has been crossed in other states.
Think of it
A sales tax permit is like a fishing licence. Just as you need official permission from the state to legally catch and keep fish from a public lake, you need official permission to collect money on behalf of the government from your customers.
Formula
Calculation
Sales tax due = taxable sales x sales tax rate
Suppose a boutique makes $90,000 of sales in a month, of which $10,000 is exempt items such as unprepared food. Taxable sales are 90,000 - 10,000 = $80,000. At a combined rate of 6%, the tax collected is 80,000 x 0.06 = $4,800. The boutique records the $4,800 as a liability and pays it to the tax authority on its filing date, while its revenue stays at $90,000.Case study
Seen in the real world
Maplewood Candle Co is an illustrative, fictional business that began by selling at local fairs. The founder never registered for a permit and treated the 7% she collected as extra income.
When the business grew and a large retailer asked for her permit number, she had to register and discovered a backlog of unreported tax. The unpaid tax on $200,000 of past sales was 200,000 x 0.07 = $14,000, before penalties and interest.
She paid the tax from savings, negotiated a payment plan for the interest and set up a separate bank account for future collections. The illustrative lesson is that tax collected from customers is held on trust and must be kept apart from operating cash, and that registering early costs far less than catching up later.
Watch out
Common mistakes
- Treating collected sales tax as business revenue instead of money owed to the tax authority.
- Assuming a permit from one state covers sales in another state where the business also has a tax obligation.
- Forgetting to renew or update the permit when the business changes its address, structure or ownership.
Questions
People also ask
Do I need a permit if I only sell online?
Usually yes if you meet the sales or activity thresholds in a state, so check the rules for each place your customers are located.
Is a sales tax permit the same as a business licence?
No, a general business licence permits you to operate, while the sales tax permit specifically registers you to collect and remit sales tax.
Does the permit let me buy stock tax-free?
In most places it does for goods you will resell, provided you give your supplier a valid resale certificate.