There is no sales tax on Forever Stamps in any US state. The price printed on the stamp is the full price you pay, whether you buy from a post office counter, a grocery store, a pharmacy, or the USPS website. That holds for a single stamp, a book, a roll, or a full sheet.
Why Postage Stamps Are Not Taxed
Sales tax generally applies to retail sales of tangible personal property and certain private-sector services. A postage stamp doesn’t fit that mold. When you buy one, you’re prepaying a federal agency to deliver mail. The payment is a fee for a government service, not the purchase of a consumer product.
The USPS is a federal entity carrying out a constitutionally established function, and states don’t have the authority to tax federal operations. Most state sales tax codes are written around private retail activity, which naturally leaves postage out of the base. You don’t need to claim the exemption or show any paperwork. It’s built into how the transaction is classified.
Buying Stamps at Stores and Online
The exemption travels with the stamp, not the counter. Grocery stores, pharmacies, office supply chains, and convenience stores that sell stamps do so as authorized distribution points for USPS. Under the Stamps to Go program, participating retailers agree to sell stamps at or below the postal price with no added surcharges. Contract Postal Units are similarly required to charge USPS prices.1About.usps.com. Approved Postal Provider Programs
Buying through USPS.com or the official USPS storefronts on major e-commerce platforms carries no sales tax either. The sales channel doesn’t change the nature of what you’re paying for.
If a retailer ever charges you more than face value for a standard Forever Stamp, that markup isn’t sales tax. It usually means the seller isn’t part of an official USPS program or is tacking on an unauthorized convenience fee. Specialty collectible editions are a separate matter and can be priced above face value.
What to Do If a Register Adds Tax to Your Stamps
Occasionally a point-of-sale system miscodes stamps and rings up sales tax. If you notice tax on your receipt for postage, take the receipt to the customer service desk. Most retailers will refund the overcharged amount on the spot and, ideally, correct the item’s tax category in their system so it doesn’t happen again.
If the store refuses to refund the tax, you can report it to your state’s department of revenue or taxation. States have a process for consumers to flag improperly collected sales tax, and retailers that systematically overcollect can face lawsuits and enforcement actions under state consumer protection statutes. The dollars on a single purchase are small, but the mechanism exists.
Deducting Postage as a Business Expense
Stamps used for business are deductible against your income taxes, even though you paid no sales tax on them. Postage bought for business purposes is an ordinary and necessary expense under federal tax law and is fully deductible.2Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses Mailing invoices, sending client correspondence, and shipping marketing materials all qualify.
Sole proprietors and single-member LLCs report postage on Schedule C (Form 1040). The IRS instructions direct filers to include postage on Line 18, which covers office expenses.3Internal Revenue Service. Instructions for Schedule C (Form 1040) Corporations deduct these costs on Form 1120, typically as an administrative or office expense.
Keep records. The IRS requires documentary evidence such as receipts, canceled checks, or billing records to support the deduction.4Internal Revenue Service. Burden of Proof A short log noting the date, amount, and business purpose of each postage purchase is generally enough. This matters most for home-based businesses where personal and business mail overlap.
Personal mail doesn’t qualify. Holiday cards, personal bill payments, and other non-business mailings are personal expenses and cannot be deducted.5Internal Revenue Service. Income and Expenses
Selling Stamps as Collectibles
The rules change when stamps stop being postage and become collectibles or inventory. Federal tax law classifies stamps as collectibles alongside coins, artwork, antiques, and gems.6Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts
If you regularly buy and sell stamps as a business, profits are ordinary income. The stamps are inventory rather than capital assets, so capital gains rates don’t apply. Income goes on Schedule C and is subject to regular income tax plus self-employment tax.
If you hold stamps as personal investments and sell at a profit, capital gains rules apply. Hold for one year or less and the gain is short-term, taxed at your ordinary income rate. Hold for more than a year and the gain is long-term, but collectibles don’t get the standard 0%, 15%, or 20% long-term rates. Collectible gains face a maximum federal rate of 28%.7Internal Revenue Service. Topic No. 409, Capital Gains and Losses If your bracket is lower than 28%, you pay the lower rate. The 28% ceiling is set by statute.8Office of the Law Revision Counsel. 26 U.S. Code 1 – Tax Imposed
High-income taxpayers may also owe the 3.8% net investment income tax on collectible gains, which can push the effective federal rate to 31.8%. That surtax applies when modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married couples filing jointly.
Report collectible sales on Form 8949, with totals flowing to Schedule D of Form 1040.9Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets Your cost basis is what you originally paid, and tax applies only to the net profit. Losses on stamps bought and held as investments can offset other capital gains; losses on stamps bought for personal mailing use generally are not deductible.