Sales tax can be either an expense or a liability, and which one it is depends entirely on whether your business is collecting it or paying it. When you collect sales tax from a customer, it’s a liability: the money isn’t yours, and you owe it to the state. When your business is the one buying something and paying sales tax at checkout, that tax is part of the cost of the purchase and becomes an expense (or gets built into an asset’s cost basis).
Collected Sales Tax Is a Liability
Your business acts as an unpaid collection agent for the government. The customer owes the tax, and you’re legally required to collect it and hand it over. That agency relationship is the whole reason collected sales tax never touches your revenue or your expenses. The moment a taxable sale closes, the tax portion creates an obligation on your balance sheet, not income on your profit-and-loss statement.
Getting this wrong distorts more than you might expect. If you record collected sales tax as revenue, your gross sales look higher than they actually are. Then if you record the remittance as an expense, you’ve inflated both sides of your income statement. Net profit might come out roughly right, but your revenue figures, margins, and operating ratios are all off. Lenders, investors, and tax authorities looking at those numbers will draw the wrong conclusions.
Most states also treat collected sales tax as trust fund money. It belongs to the government from the moment you collect it. Spending it on payroll or inventory is essentially spending the state’s money, and states can hold business owners, officers, and anyone responsible for tax filings personally liable for unremitted sales tax. That personal liability pierces the normal protections of a corporate structure. Treating collected tax as a liability in your books isn’t just an accounting nicety; it reflects a legal reality about whose money it is.
How to Book Sales Tax You Collect
You need a current-liability account, commonly called Sales Tax Payable. Two transactions govern its life cycle: recording the collection and recording the remittance.
At the Sale
Say you sell a product for $100 in a jurisdiction with an 8% sales tax rate. The customer pays $108. Your journal entry splits that amount between what you earned and what you owe the state:
- Debit Cash (or Accounts Receivable) $108 for the total received
- Credit Sales Revenue $100 for what you actually earned
- Credit Sales Tax Payable $8 for the amount you’re holding for the state
The $8 credit increases current liabilities. It’s cash in your bank account that isn’t yours.
At Remittance
When you send the collected tax to the state:
- Debit Sales Tax Payable $8 to clear the liability
- Credit Cash $8 for the money leaving your account
No expense hits the income statement. You haven’t spent anything. You returned money that was never yours.
A Note on Gross vs. Net Presentation
Under the FASB’s revenue recognition standard, businesses have an accounting policy election. You can present collected sales taxes on a net basis (excluded from revenue entirely) or on a gross basis. ASU 2016-12 states that an entity “may make an accounting policy election to exclude from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the entity from a customer.”1Financial Accounting Standards Board. Accounting Standards Update 2016-12 Most businesses elect the net method because it’s simpler and keeps revenue figures clean. If you’re a small business owner filing your own returns, the net method is almost certainly what you want.
When Sales Tax Is a Legitimate Expense
Sales tax flips from liability to expense the moment your business becomes the end consumer. When you buy office supplies, equipment, or services for your own operations, you’re the customer. The sales tax at checkout is part of what the item cost you.
Everyday Purchases
For routine consumables like printer paper, cleaning supplies, or software subscriptions, the sales tax paid gets lumped into the total cost charged to the relevant expense account. Spend $53.50 on office supplies including $3.50 in sales tax, and you debit Office Supplies Expense for the full $53.50. The IRS treats sales tax paid on a business service or property as “part of the cost of the service or property,” and if that cost is a deductible business expense, the tax is deductible along with it.2Internal Revenue Service. Publication 535, Business Expenses
Capital Assets
When you buy a long-lived asset such as a delivery truck, manufacturing equipment, or furniture, the sales tax gets capitalized into the asset’s cost basis rather than expensed immediately. The IRS is explicit that cost basis includes sales tax and other expenses connected with the purchase.3Internal Revenue Service. Topic No. 703, Basis of Assets A $50,000 machine with $4,000 in sales tax goes on the books at $54,000, and that full amount is depreciated over the asset’s useful life. The tax still becomes an expense eventually, just spread across multiple years through depreciation rather than hitting your income statement all at once.
Inventory for Resale
If the property is merchandise bought for resale, the IRS treats the sales tax as part of inventory cost, not a separate expense.2Internal Revenue Service. Publication 535, Business Expenses That cost flows through to cost of goods sold when the item is sold. In most cases, though, businesses buying inventory for resale give the supplier a resale certificate and don’t pay sales tax on those purchases in the first place.
Use Tax Follows the Same Logic
Use tax catches what sales tax misses. When your business buys something from an out-of-state vendor that didn’t charge your state’s sales tax, you generally owe use tax directly to your home state at the same rate the sales tax would have been. Every state that imposes a sales tax also imposes a corresponding use tax.
Unlike sales tax, which the seller collects, use tax is self-assessed. You calculate what you owe and report it, typically on your regular sales tax return if you’re registered to collect sales tax, or on a separate use tax return if you’re not. If you paid some sales tax to another state on the same purchase, most states give you a credit for that amount so you’re not taxed twice.
For accounting, use tax you owe as the end consumer is an expense, just like sales tax you pay at checkout. It’s a final, non-recoverable cost of whatever you bought. Debit the relevant expense or asset account and credit Use Tax Payable (or Cash, if you pay immediately).
Gross Receipts Taxes Are a Different Animal
Some states impose gross receipts taxes that look similar to sales taxes but work very differently. A sales tax is imposed on the customer and collected by the business as an intermediary. A gross receipts tax is imposed directly on the business based on its total revenue, regardless of profit. The business bears the economic burden, even if it tries to pass the cost along to customers through higher prices.
Because gross receipts taxes are levied on the business rather than collected from the customer, they belong on the income statement as an operating expense. They reduce your profit. The FASB’s practical expedient for excluding taxes from revenue specifically does not apply to “taxes assessed on an entity’s total gross receipts.”1Financial Accounting Standards Board. Accounting Standards Update 2016-12 If your state imposes one, treat it as a cost of doing business, not a pass-through liability.
The Practical Test
When you’re deciding how to code a sales tax amount in your books, ask one question: who is the tax being imposed on in this transaction? If it’s the customer and you’re just collecting it, it’s a liability until you remit. If it’s your business, whether because you’re buying supplies, buying an asset, self-assessing use tax, or paying a gross receipts tax, it’s an expense (or part of an asset’s cost). Get that classification right at the point of entry and the rest of your reporting falls into line.