If you sell to tax-exempt buyers, you must have a valid exemption certificate on file, or your company may be liable for uncollected tax. Exemption certificates expire in some states, but not in others.
In the United States, sellers are often obligated to collect sales tax on taxable items. In some cases, though, a buyer will be exempt from paying sales tax, either because the buyer is a qualifying nonprofit or government agency, or because the buyer is a reseller or manufacturer.
If your company sells to exempt buyers, you can't simply stop charging tax without proper documentation. You must have a sales tax exemption certificate on file that certifies the transaction qualifies for an exemption from the normal sales tax due.
Unfortunately, some companies accept an exemption certificate once, keep it on file, and assume they've fulfilled their obligations, but that's not necessarily the case.
Exemption certificates can become invalid or no longer apply. They can also expire, although the rules for when this happens vary by state. If you have certificates on file that are no longer valid and you're audited, you are responsible for uncollected tax, interest, and penalties.
This guide provides a state-by-state overview of when sales tax exemption certificates expire. It covers all types of certificates, including resale certificates which are often subject to different rules. You'll also learn what could invalidate a certificate and how to handle invalid certificates.
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While each state establishes its own rules for sales tax exemption certificates, most states fall into one of three broad categories regarding certificate expiration.
The table below includes a state-by-state guide to when sales tax exemption certificates expire:
Ecommerce sellers must be aware of the state-specific rules for when certificates expire. Florida, in particular, can create complications because it requires sellers to collect an updated exemption certificate from buyers every single year.
As the Florida Department of Revenue explains, annual resale certificates expire on December 31 each year. While Florida automatically issues a new Annual Resale Certificate for Sales Tax and the certificate number remains the same, the expiration date is updated each year.
If sellers don't collect updated certificates from Florida buyers each year, they could be exposed to liability for uncollected sales tax in the event of an audit. Florida law makes dealers liable for all uncollected tax owed on transactions if there is no proper exemption documentation on file.
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Regardless of whether a state sets an expiration date for an exemption certificate or not, a certificate can become invalid in certain circumstances. This can occur if the buyer:
Tracking changes that buyers experience can be very difficult for ecommerce sellers, especially those with a large number of exempt customers. Many businesses rely on their buyers to alert them to these changes, but buyers don't always follow through on this task.
Ultimately, it remains the seller's responsibility to ensure certificates are valid, so your company needs a process for re-collecting certificates any time a buyer's business information or purpose changes. You can't assume you're in compliance just because a certificate hasn't expired.
If an exemption certificate becomes invalid and the seller cannot demonstrate good-faith acceptance of the certificate, the seller may be held liable for uncollected sales tax.
If your company sells to exempt buyers and you collect exemption certificates, you need a process in place for tracking those certificates and renewing them when they expire.
If you sell in just one or two states, a spreadsheet may be all you need. You can track the customer name, state, certificate type, issue date, expiration date, and date you collect the certificate, and can set calendar reminders 60 to 90 days before a certificate expires.
If you operate across multiple states, this method becomes too time-consuming and creates too much potential for error. Since it is no longer practical to manually track certificates on file, you need to explore alternatives such as:
In most states, the exempt buyer will need to request a new certificate to provide to you, but that's not the case everywhere. In Florida, the state reissues the certificate automatically.
Regardless of which method you select or when a specific state's exemption certificates expire, you should audit all certificates your company has on file at least once annually. This will allow you to identify changes to business information that could invalidate the certificate.
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State laws put the burden on the seller to ensure exemption certificates are valid before allowing a buyer to make a purchase without paying sales tax. This means confirming the information is complete and accurate, that the buyer is exempt, and that the certificate isn't expired.
A seller can fulfill this obligation even if the seller accepts an invalid certificate if the seller acts in good faith. But there are specific requirements to fulfill to do that. For example, as the Georgia Department of Revenue explains in O.C.G.A. § 48-8-38(a), you act in good faith only if:
If you don't have a valid certificate on file and can't prove you acted in good faith, you become liable for uncollected sales tax. For example, the New York Department of Taxation and Finance explains:
"You must exercise ordinary care when accepting a certificate. You could be held liable for the sales tax you didn’t collect if you knew that the purchase was not for an exempt purpose, or you knew that the certificate was false or fraudulent."
You could also owe interest and penalties on the uncollected tax. Since you generally cannot go back and collect the uncollected tax, this entire bill is your company's responsibility.
This can also happen if you have an expired certificate on file, even if it was otherwise valid, as an expired certificate provides no protection. To avoid significant legal liability, if a buyer presents an invalid or expired certificate, you should either:
As the chart above demonstrates, there are different situations when a buyer could be exempt from paying sales tax, including when they are a reseller or when they are a nonprofit or manufacturer.
Different kinds of exemption certificates are used by these different exempt buyers, and you must know the requirements and necessary documentation for each type of certificate you are presented with. Some of the most common types of exemption certificates include:
As the table shows, the exemption expirations are usually, but not always, the same across certificate types. There are exceptions, though. In Tennessee, for example, resale certificates have no fixed expiration date, but exemption certificates for nonprofits expire every four years.
However, regardless of whether the expiration date is the same, the documentation required to prove a certificate is valid may vary. For example, a resale certificate typically requires a valid sales tax permit number, while a nonprofit certificate could require proof of tax-exempt status.
Exemption certificate management is complicated, with different state rules to follow regarding when a buyer is exempt, what documentation buyers must provide with the exemption certificate, and when exemption certificates expire.
If you try to manage this manually, you risk falling out of compliance, making sales to allegedly exempt buyers without proper documentation, and facing significant risks in the event of an audit.
You can simplify the process and protect against losses by turning to Numeral to take over exemption certificate management for you. Numeral's exemption certificate management:
Exemption certificate management is also just a small part of how Numeral helps with your broader sales tax compliance obligations.
Numeral is a true end-to-end solution, offering free nexus monitoring across all 50 states, a tax engine calculating accurate rates so you can charge customers in real-time, and automated filing and remittance across all 50 states.
The Numeral Guarantee offers peace of mind that this will all be done right. If we make a mistake, we cover penalties and interest resulting from audits. We do all this with no long-term commitments and with simple flat-rate pricing of $75 per filing and $150 per registration.
Get started with Numeral to see how easy sales tax compliance can be.
Still need to know more? Here are the answers to some frequently asked questions about expiring exemption certificates.
Different states set different rules for when sales tax exemption certificates expire. There are three broad categories:
Resale certificates generally expire at the same time as other sales tax exemption certificates, although there are a few states that set different rules for when resale vs. nonprofit certificates expire.
In some cases, resale certificates do not expire at all, but in other states, they may be valid only for a limited period, such as four or five years.
You can learn more about verifying resale certificates here.
If you accept an expired exemption certificate and you cannot prove you acted in good faith when doing so, your company can become liable for the uncollected tax plus penalties and interest.
You should not accept an expired exemption certificate. Instead, pause the order until a valid certificate is on file or charge sales tax on the transaction.
In California, resale certificates do not have a fixed expiration date. A blanket exemption can be good indefinitely as long as the business information does not change. California requires sellers to keep exemption certificates on file for four years from the time of the sale.
An exemption certificate can be invalid even if it does not expire. It could be invalid from the start if it didn't contain all of the required details or was not valid for the type of purchase.
It could also become invalid if the buyer no longer qualifies for the exemption or if the buyer's details change, such as their business name, address, or permit number.
The rules for how long a business should keep exemption certificate records can vary by state. In most states, you should keep these records for three to four years. However, the exact timeline depends on the typical sales tax audit statute of limitations.
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