Constructive Sale Price: Formulas, Form 720, and Penalties

The constructive sale price is a substitute wholesale value the IRS uses to calculate manufacturers’ excise tax when the real transaction price doesn’t reflect a genuine wholesale exchange. It comes into play in three situations: a manufacturer sells directly to consumers at retail, ships goods on consignment, or sells to a related party below fair market value. The rules sit in IRC Section 4216(b) and exist so the tax burden stays consistent whether a manufacturer uses an independent distributor or bypasses one.¹

When the Rules Apply

The framework kicks in when the invoice price can’t serve as a reliable proxy for what the goods would fetch in a normal wholesale transaction. Three triggers control this.

Retail sales. A manufacturer sells a taxable article directly to the end consumer, skipping distributors and wholesalers. Because no wholesale transaction occurred, there is no arm’s-length wholesale price to tax.
Consignment sales. A manufacturer places goods with a seller who may sell them under its own name but never takes title. The consignment price often doesn’t reflect a true market exchange.
Non-arm’s-length sales below fair market value. A manufacturer sells to a related company, subsidiary, or affiliate at an artificially low price. Left alone, these deals would shrink the tax base and hand vertically integrated companies an advantage over competitors that sell through independent distributors.

Most disputes arise in that third category. Two entities count as related when one controls or significantly influences the other through stock ownership, overlapping management, or corporate affiliation. The specific “related party” test depends on which Code provision applies to your situation, since the definitions vary across sections.¹

How the Constructive Sale Price Is Determined

The general rule uses the price at which the same or similar articles are sold to wholesale distributors in the ordinary course of trade by manufacturers of those goods, as determined by the Secretary of the Treasury.¹ In practice, that means locating a comparable wholesale price from real transactions in the same industry.

For retail sales, the regulations set the constructive sale price at the highest price at which the article is sold to wholesale distributors. If that highest wholesale price is lower than the actual selling price, use the constructive figure as the tax base. If the wholesale price equals or exceeds the actual price, use the actual price, because it already reflects fair market value.² The constructive price only reduces your tax base when the wholesale market supports a lower valuation.

For consignment sales, the constructive price is ordinarily the net amount the manufacturer receives from the consignee. For non-arm’s-length sales, the analysis turns on whether the transaction price falls below what a willing buyer and seller would agree to in an independent negotiation.²

Supporting a particular figure means gathering evidence of what your goods would cost in a standard commercial setting. Review your own records for sales of identical items to unrelated third-party wholesalers, and compare prices charged by other manufacturers in your industry. Assemble enough market evidence that the valuation holds up if the IRS questions it. This groundwork happens before any percentage formula.

The Percentage Formulas

When the general comparable-wholesale approach doesn’t fit, the Code supplies specific percentage-based formulas. Which one applies depends on your distribution structure and product type.

75 Percent of the Actual Sale Price

The most common formula sets the constructive sale price at 75 percent of the actual selling price. It typically applies when a manufacturer sells taxable goods at retail or through a non-arm’s-length deal and no comparable wholesale price is readily available.¹ The 75 percent figure approximates the wholesale price that would have existed in a traditional distribution chain, because the retail markup on top of wholesale typically falls in that range.

An example. A manufacturer sells an article directly to a consumer for $2,000. The constructive sale price is $1,500. If the applicable excise tax rate is 10 percent, the tax comes to $150 rather than the $200 owed on the full retail price. Without a constructive price, the manufacturer selling at retail would owe more excise tax than a competitor moving the same product through a wholesaler at $1,500.

90 Percent for Affiliated Distributors

A different percentage applies when a manufacturer regularly sells to a distributor in the same affiliated corporate group, and that distributor sells to independent retailers but not to wholesale distributors. In that setup, the constructive sale price is 90 percent of the lowest price the affiliated distributor regularly charges independent retailers in arm’s-length transactions.³ The affiliated group must meet the Section 1504(a) definition, which generally requires 80 percent or greater stock ownership.

The 75 percent rule starts from the actual sale price. The 90 percent rule starts from the affiliated distributor’s lowest regular price to independent retailers. The 90 percent formula produces a higher constructive price relative to the downstream retail figure, reflecting that the affiliated distributor is performing genuine distribution work even though it isn’t independent.

95 Percent Threshold for Related-Company Resales

When a manufacturer sells to a related company that then resells to independent wholesale distributors, the IRS applies a rebuttable presumption. If the intercompany transfer price falls below 95 percent of the reselling company’s lowest established price to unrelated wholesalers, the transfer is treated as a below-market sale and a constructive price calculation is required. A manufacturer can present evidence to rebut the presumption, but staying above 95 percent of the resale price avoids the issue.

Charges You Can Exclude From the Taxable Base

Once the constructive sale price is set, certain charges come out dollar for dollar. These exclusions are separate from the percentage formulas.

Transportation, Delivery, and Installation

Charges for shipping, delivery, insurance, and installation that arise after shipment to the customer begins can be excluded from the sale price when computing excise tax.⁴ These costs must be actually incurred in connection with delivering the article to a purchaser under a bona fide sale. Only the portion of a charge that represents actual expense qualifies; padding a delivery line won’t survive audit.

Internal transportation the manufacturer incurs for its own convenience, such as moving goods from a factory to a warehouse, doesn’t qualify even if separately itemized.⁴ The line is drawn at shipment in response to a customer’s order. Anything before that point is a cost of doing business.

Local Advertising Charges

Manufacturers who require purchasers to pay for local advertising as a condition of sale can exclude those charges from the taxable price, subject to strict conditions. The advertising must be initiated by someone in the distribution chain (a wholesaler, dealer, or retailer), not planned and placed by the manufacturer itself. It must name the taxable product, identify a retail location where consumers can buy it, and appear in traditional media such as newspapers, magazines, radio, television, or outdoor signs.⁵

The exclusion is capped at 5 percent of the sale price, calculated before the advertising charge is subtracted. The charge must appear as a separate line on the invoice, and the manufacturer must intend to reimburse the purchaser. If the manufacturer doesn’t actually repay the amount before May 1 of the following calendar year, the exclusion evaporates and tax is owed on that amount as if a new sale occurred on that date.⁵ Miss May 1 and the deduction reverses.

For both exclusion categories, documentation matters. Keep freight bills, insurance certificates, installation invoices, and advertising reimbursement records organized by quarter, and connect each charge to a specific sale.

Filing on Form 720

Manufacturers who owe excise tax report it on Form 720, the Quarterly Federal Excise Tax Return.⁶ One return per quarter, with these deadlines:

Quarter 1 (January–March): due April 30
Quarter 2 (April–June): due July 31
Quarter 3 (July–September): due October 31
Quarter 4 (October–December): due January 31

If a deadline falls on a weekend or federal holiday, it shifts to the next business day.⁷ The Form 720 taxable base should reflect the constructive sale price, not the invoice price, whenever the rules above apply.

Electronic filing is mandatory if you’re required to file 10 or more returns of any type during the calendar year. The threshold counts returns in aggregate, including income tax, employment tax, information returns like W-2s and 1099s, and excise tax returns, so most businesses with any payroll cross it. A hardship waiver is available if the cost of electronic filing would significantly exceed paper filing.⁸

Penalties and Interest if You Use the Wrong Base

Using the wrong tax base, whether by applying the full retail price instead of a constructive sale price or by inflating exclusions to shrink the taxable amount, creates either an overpayment or an underpayment. Overpayments can be claimed as credits. Underpayments trigger penalties that compound.

Failing to file Form 720 by the deadline adds 5 percent of the unpaid tax for each month or partial month the return is late, capped at 25 percent. Failing to pay the tax shown on a filed return adds 0.5 percent per month, also capped at 25 percent. If the IRS issues a notice and demand for tax that wasn’t shown on the return, the same 0.5 percent monthly penalty applies. After a notice of intent to levy, the monthly failure-to-pay rate doubles to 1 percent. Fraudulent failure to file runs 15 percent per month, up to 75 percent total.⁹

Interest accrues on any unpaid balance on top of penalties. For the first quarter of 2026 the IRS underpayment interest rate is 7 percent, dropping to 6 percent for the second quarter.¹⁰ Large corporations face higher rates: 9 percent in the first quarter and 8 percent in the second.¹¹ These rates adjust quarterly, so check the current announcement.

The IRS generally has three years from the date you file to assess additional excise tax. That window stays open indefinitely if you filed a fraudulent return, willfully attempted to evade the tax, or never filed at all.¹²

Product Categories With Their Own Wrinkles

The constructive sale price framework applies broadly to manufacturers’ excise taxes under Chapter 32, but some product categories layer their own rules on top. Sport fishing equipment is one. If the standard Section 4216(b) rules don’t reach a particular sale, and the buyer or someone further down the chain resells the equipment to a related party, that related party becomes liable for excise tax as if it were the manufacturer. The related party can claim a credit for tax already paid on the initial sale, but must prove that prior payment.¹³ The statute also targets structures that use intermediaries to reduce excise tax otherwise due. Before filing, verify which specific formula and any category-specific rules apply to your product.

1
Office of the Law Revision Counsel. 26 U.S.C. 4216 – Definition of Price
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eCFR. 27 CFR 53.95 – Constructive Sale Price; Basic Rules
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GovInfo. 26 U.S.C. 4216 – Definition of Price
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eCFR. 26 CFR Part 48 – Manufacturers and Retailers Excise Taxes – Section: 48.4216(a)-2 Exclusions from Sale Price
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eCFR. 26 CFR 48.4216(e)-1 – Exclusion of Local Advertising Charges from Sale Price
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Internal Revenue Service. About Form 720, Quarterly Federal Excise Tax Return
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Internal Revenue Service. Basic Things All Businesses Should Know About Excise Tax
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Federal Register. Electronic Filing Requirements for Specified Returns and Other Documents
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Office of the Law Revision Counsel. 26 U.S.C. 6651 – Failure to File Tax Return or to Pay Tax
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Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026
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Internal Revenue Service. Internal Revenue Bulletin: 2026-08
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Alcohol and Tobacco Tax and Trade Bureau. Ruling 60-312
13
Office of the Law Revision Counsel. 26 U.S.C. 4162 – Definitions; Treatment of Certain Resales