Selling to another business is not automatically tax-free, and selling to consumers is not automatically taxable. The difference between business-to-business (B2B) and business-to-consumer (B2C) sales tax comes down to why the buyer is purchasing and what paperwork you keep. This guide explains B2B vs B2C sales tax compliance, the documents that protect you in an audit, and the special rules that apply only to business buyers.
Key takeaways
- Sales tax applies to the final consumer. A business buyer is a consumer when it uses the item itself.
- B2B sales are exempt mainly when the buyer resells the item or qualifies for a specific exemption, and the seller holds a valid certificate.
- Without a certificate, a B2B sale is treated like any taxable sale, and the seller can be assessed the tax.
- Some taxes apply only to business use, such as Ohio’s tax on automatic data processing and electronic information services.
B2B vs B2C at a Glance
| Question | B2C sale | B2B sale |
|---|---|---|
| Is the sale taxable? | Yes, if the item is taxable in the state | Yes, unless resale or another exemption applies |
| Documentation | Receipt showing tax | Resale or exemption certificate for tax-free sales |
| Who owes tax if none is charged? | The seller, if it should have collected | The seller, unless it holds a valid certificate; the buyer may owe use tax |
| Typical volume | Many small orders | Fewer, larger invoices, often with net terms |
| Common special rules | Sales tax holidays, consumer exemptions such as groceries | Manufacturing, agricultural and business-use rules |
When B2B Sales Can Be Tax-Free
Sales for Resale
If your customer will resell the item, the sale is usually exempt when the buyer gives you a resale certificate. In Texas, for example, exempt organizations and resellers use Form 01-339, the Texas Sales and Use Tax Resale Certificate. Keep the certificate on file; without it, the state can treat the sale as taxable.
Exempt Buyers and Exempt Uses
- Exempt organizations and governments with a state-issued exemption. See our nonprofit sales tax exemption guide.
- Manufacturing and agriculture exemptions for qualifying equipment or ingredients, which vary by state.
- Direct pay permits, which let large purchasers pay tax directly to the state instead of to the seller.
Learn how certificates work in our exemption certificate guide.
When Business Buyers Still Pay Tax
A business that buys office furniture, computers or supplies for its own use is the final consumer and generally pays sales tax like anyone else. If a vendor does not charge tax, the business usually owes use tax instead.
- Business-only taxes: Ohio taxes automatic data processing, computer services and electronic information services when they are provided for use in business.
- Shifting liability: starting January 1, 2027, California may shift the tax on digital products from the retailer to the purchaser when a retailer’s electronic sales to that purchaser exceed $5 million in a calendar year or the preceding year. See digital products sales tax by state.
Example: the same $5,000 order of printers in Dallas, Texas (8.25%)
To a consumer: $5,000 × 8.25% = $412.50 tax
To a business that uses them in its office: $412.50 tax
To a reseller with a valid resale certificate: $0 tax
Check rates for any address with the Sales Tax Calculator or the Texas rate page.
B2B Compliance Checklist
- Collect a complete, signed certificate before or at the time of a tax-free sale.
- Check that the certificate type fits the state and the products sold.
- Renew expiring certificates and flag customers without one.
- Charge tax on business customers’ purchases for their own use.
- Review your own purchases for use tax.
- Track B2B and B2C sales together for economic nexus thresholds, since many states count exempt and wholesale sales.
Conclusion
B2B vs B2C sales tax compliance is less about who the customer is and more about how the item will be used and whether you hold the right certificate. Charge tax by default, exempt only with documentation, and keep certificates organized. Use the Reverse Sales Tax Calculator and Add/Remove Sales Tax Calculator for invoices, and look up any ZIP code on our state pages or the Tax Rate Center homepage.
Related: for distributors and wholesalers, see how to handle sales tax on B2B wholesale transactions.
Frequently Asked Questions
Do businesses pay sales tax?
Yes, on purchases they use themselves, such as equipment and supplies. They do not pay tax on items bought for resale when they give the seller a valid resale certificate.
Is a B2B sale exempt from sales tax?
Not automatically. A B2B sale is exempt only when the buyer qualifies, for example for resale, and provides the proper certificate.
What happens if I do not collect a resale certificate?
The sale is generally treated as taxable, and the state can assess the uncollected tax against you in an audit.
Do business customers need to pay use tax?
Yes, when they buy taxable items for their own use without paying sales tax, such as from an out-of-state vendor.
Are there taxes that apply only to business purchases?
Some states tax certain services only when used in business. Ohio, for example, taxes automatic data processing and electronic information services provided for use in business.