Yes, you can generally recover the sales tax you pay on business purchases, but deducting sales tax as a business expense almost never means writing it on a separate line. The IRS treats sales tax as part of the cost of whatever you bought. Pay $500 for supplies plus $40 in sales tax and your deductible expense is $540. How fast you get the deduction depends on whether the purchase is something the business uses up within the year or a longer-lived asset like equipment or a vehicle.
Sales Tax on Everyday Business Purchases
Supplies, materials, and services your business consumes within a year are ordinary and necessary business expenses, and the sticker price plus sales tax counts as a single deductible cost.1Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses There’s no need to break the tax out. Office supplies, cleaning products, software subscriptions, shipping — record the receipt total under the right expense category and move on.
Sales Tax on Capital Assets
The math changes for purchases that last more than a year. Machinery, furniture, computers, and vehicles have to be capitalized rather than deducted all at once.2Office of the Law Revision Counsel. 26 USC 263 – Capital Expenditures The sales tax you pay on a capital asset is added to its cost basis, the total amount the IRS considers your investment in the property. Sales tax is one of the items the IRS specifically lists as part of the cost basis of any property you buy.3Internal Revenue Service. Publication 551, Basis of Assets
You then recover that basis through annual depreciation deductions over the asset’s useful life. The standard system is MACRS, which assigns a recovery period based on the type of property.4Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System A $30,000 delivery van with $2,400 in sales tax gives you a starting basis of $32,400. Each year’s depreciation deduction chips away at that full amount, so the sales tax portion is recovered right alongside the purchase price. The tax benefit is real. It just arrives gradually.
Deducting the Full Cost in Year One
Two provisions can let you deduct the entire cost of qualifying equipment, sales tax and all, in the year you place it in service.
Section 179 lets you elect to expense the full cost of eligible business property rather than depreciating it. For 2026, the maximum you can expense is $2,560,000, and the benefit begins phasing out once total qualifying purchases exceed $4,090,000. Because sales tax is part of the asset’s cost, it rides along inside the amount eligible for the election.5Internal Revenue Service. Instructions for Form 4562 You have to use the property for business more than 50% of the time in the year you place it in service.6Internal Revenue Service. Publication 946, How To Depreciate Property
Bonus depreciation is the other route. Under the One, Big, Beautiful Bill signed in 2025, eligible property acquired after January 19, 2025 qualifies for a permanent 100% first-year depreciation deduction.7Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill Bonus depreciation has no dollar ceiling and no phase-out based on total purchases. For most businesses buying equipment in 2026, the practical result is the same as Section 179: the entire cost basis, sales tax included, can come off taxable income in the first year.
Mixed Business and Personal Use
If a piece of equipment or a vehicle does double duty, you can only deduct the business-use share. Depreciation is based on the percentage of time the property serves the business.6Internal Revenue Service. Publication 946, How To Depreciate Property A truck with a $32,400 basis used 70% for business has a depreciable basis of $22,680. The other 30% is not deductible at all.
The same percentage applies to Section 179, and if business use drops to 50% or below in the first year you lose the Section 179 election entirely for that asset. Keep a mileage log or usage record. Auditors will ask for one.
Sales Tax You Collect From Customers
Sales tax you collect at the register is a different animal. That money was never yours. You held it and forwarded it to the state or local government, so it’s not part of your gross income and it isn’t deductible. The Schedule C instructions state directly that sales tax imposed on the buyer that you collected and remitted is excluded from both gross receipts and deductible expenses.8Internal Revenue Service. Instructions for Schedule C (Form 1040)
One boundary worth flagging. In some states, the legal obligation for sales tax falls on the seller rather than the buyer, even though the seller passes the cost through. In those states, the sales tax imposed on you as the seller is deductible on Schedule C, but any amount you collected from buyers has to be reported as part of your gross receipts. The deduction and the added income roughly cancel out, so it’s largely an accounting formality, but getting it wrong can trigger an IRS notice.8Internal Revenue Service. Instructions for Schedule C (Form 1040)
Resale Certificates and Exempt Purchases
If you buy inventory to resell, you may not owe sales tax on the purchase at all. Most states let businesses present a resale certificate to their suppliers, exempting the transaction from sales tax on the theory that the tax will be collected when the end customer buys the finished product. No sales tax paid means nothing extra to fold into your cost basis. Your deductible cost of goods sold is simply the wholesale price.
The exemption only applies to items genuinely intended for resale. Using a resale certificate to dodge sales tax on office furniture or personal purchases is fraud, and states impose stiff penalties, including back taxes, interest, and in some cases fines of 50% or more of the tax that should have been paid. If you later pull inventory off the shelf for personal use or a purpose that doesn’t qualify, you owe the sales tax yourself, usually as use tax on your state return.
Don’t Double-Count With Schedule A
Individuals can elect to deduct state and local general sales taxes as an itemized deduction on Schedule A instead of state and local income taxes.9Internal Revenue Service. Topic No. 503, Deductible Taxes That election is separate from the business deduction, and the IRS doesn’t let you claim the same sales tax dollars twice. If you take the Schedule A sales tax deduction, you can’t also include those same taxes in a business asset’s cost basis.6Internal Revenue Service. Publication 946, How To Depreciate Property
For most owners who also pay state income tax this is moot, because the state income tax deduction usually beats the general sales tax election. In a state with no income tax, you might use the sales tax election on Schedule A for personal purchases while still including sales tax in the cost basis of business assets, as long as the same dollars aren’t counted twice. Schedule A is also capped by the SALT limit, while business expense deductions on Schedule C or Form 1120 are not.
Where the Deduction Shows Up on Your Return
The right form depends on your business structure and the type of purchase.
Sole proprietors report business income and expenses on Schedule C of Form 1040. Sales tax bundled into supply costs goes wherever those supplies belong: office expenses, cost of goods sold, or another expense line. Sales tax that your state imposes on you as the seller is deductible on Line 23 (taxes and licenses). Sales tax folded into a capital asset’s basis is recovered through depreciation, reported on Form 4562 and carried to Schedule C.8Internal Revenue Service. Instructions for Schedule C (Form 1040)
Corporations use Form 1120 with the same underlying logic. Business taxes go on Line 17 (taxes and licenses), but sales tax paid on acquired property must be treated as part of the property’s cost, not deducted on that line.10Internal Revenue Service. Instructions for Form 1120 Depreciation for capital assets, sales tax included in their basis, flows through Form 4562 onto the return.
A Section 179 election or bonus depreciation is claimed on Form 4562. The cost you enter includes sales tax as part of the asset’s total cost.5Internal Revenue Service. Instructions for Form 4562
Records to Keep
The general rule is three years from the date you filed your return or two years from the date you paid the tax, whichever is later.11Internal Revenue Service. How Long Should I Keep Records That covers receipts for everyday supplies and one-off purchases. Depreciable assets need a longer leash. Keep the purchase records until the limitations period expires for the year you sell or dispose of the property.12Internal Revenue Service. Publication 583, Starting a Business and Keeping Records Buy a machine in 2026 and sell it in 2033, and your records for that machine need to survive until at least 2036.
Every receipt should show the purchase price and sales tax separately. When a receipt gives only a lump total, calculate the tax using the rate that applied at the time and location of the purchase, and note the calculation with the receipt. Digital copies are acceptable if they’re stored in a system that can reproduce them reliably. Photos loose in a phone folder don’t clear that bar. Use bookkeeping or document-management software that indexes and preserves the files.