Under GAAP, warranty costs are not automatically part of selling expenses. Direct repair and replacement costs on a standard product warranty generally land in Cost of Goods Sold, while the administrative side of running the warranty program (claims processing, call center, returns logistics) belongs in Selling, General and Administrative expenses. Extended warranties sold separately are treated differently again, with their fulfillment costs typically flowing through cost of revenue. So the honest answer to whether warranty costs are selling expenses under GAAP is: some of them, sometimes, and only the administrative portion of a standard warranty is a clean fit.
Standard Warranties Split Between COGS and SG&A
A standard product warranty (the one bundled with the sale, guaranteeing the product meets specifications) is what the accounting standards call an assurance-type warranty. Under ASC 606, it is not a separate performance obligation. The company has one obligation: deliver a product that works. The warranty simply backs up that promise.1FASB. Revenue from Contracts with Customers (Topic 606)
Because the assurance-type warranty is part of delivering the promised product, the costs tied to physically making that product work belong with the other costs of the product. Replacement parts pulled from inventory, the labor of a repair technician, outside repair charges: these are close cousins of the original manufacturing cost. If the unit had been built right the first time, the cost would not exist. Classify them in COGS.
The administrative machinery of running the warranty program is a different kind of cost. The warranty department manager’s salary, the call center handling claims, the paperwork of processing returns, shipping logistics for units coming back — none of that touches the physical repair. It is operational overhead, and it belongs in SG&A.
Many companies book a single warranty accrual that mixes both flavors of cost. Splitting the accrual between COGS and SG&A along functional lines requires enough internal cost tracking to tell repair spending apart from program overhead. Companies with heavy warranty volumes generally find the effort worthwhile.
Why the Split Matters for Reported Margins
The classification directly changes gross profit. Push repair costs down into COGS and gross margin reflects the true cost of delivering functioning units. Park those same repair costs up in SG&A and gross margin looks better than the business really is, while operating margin absorbs the hit further down the statement. The bottom line is identical either way, but the picture told about production quality and unit economics is not. Misclassifying repair costs as selling expenses can mislead investors about how efficiently the company actually builds its product.
Extended Warranties Are a Separate Case
When a customer buys an extended warranty or service contract as a separate purchase, the accounting shifts fundamentally. This is a service-type warranty, which ASC 606 treats as its own performance obligation. The company allocates a portion of the transaction price to the warranty based on its standalone selling price and recognizes that revenue ratably over the coverage period.1FASB. Revenue from Contracts with Customers (Topic 606)
Fulfillment costs for those contracts get matched against that separately recognized revenue. In practice, many companies present those costs as cost of revenue (sometimes labeled “cost of services”) rather than SG&A, because the costs directly generate the warranty revenue. The governing principle is matching: put the expense on whichever line pairs it with the revenue it produces. Where a company reports meaningful extended warranty volume, showing fulfillment costs inside SG&A tends to overstate gross margin on what is effectively a service business running inside the broader operation.
How Warranty Costs Get on the Books in the First Place
The matching principle requires warranty expense to be recognized in the same period as the related sale, not later when a customer files a claim. That means estimating expected warranty cost at the point of sale and booking both an expense and a liability at that moment.
The estimate typically combines three inputs: units sold in the period, historical failure rate, and average cost per repair. Multiplying through produces the accrual. Ten thousand units sold, a 3% historical failure rate, and a $200 average repair cost yields a $60,000 warranty expense for the period. The estimate gets updated as actual claims data comes in and as products and processes change.
The journal entry debits Warranty Expense and credits Estimated Warranty Liability. The debit hits COGS or SG&A depending on which flavor of cost is being accrued — repair costs to COGS, administrative costs to SG&A. On the balance sheet, the liability is split between current (claims expected within the next 12 months or operating cycle) and non-current portions. A three-year warranty typically leaves a meaningful chunk sitting in the non-current line.
What Happens When Actual Claims Come In
Fulfilling a claim does not create a new expense. The expense was recognized at the time of sale. The actual repair draws down the previously established liability instead. The entry debits Estimated Warranty Liability and credits either Cash (for labor or outside repairs) or Inventory (for replacement parts). Individual claims do not touch the income statement, because the expense was front-loaded into the sale period.
Actual claims never match estimates exactly. Companies periodically compare cumulative claims to the accrued balance and adjust. Lower defect rates than expected mean reducing the liability with a credit to warranty expense, which lifts earnings in the adjustment period. Higher claims mean increasing both the liability and the expense. Adjustments are prospective. Prior financial statements are not restated for changes in warranty estimates.
Disclosure of the Warranty Liability
ASC 460 requires a company to disclose the accounting policy and methodology behind its warranty liability, and to present a tabular reconciliation of how the aggregate liability moved during the reporting period.2Deloitte Accounting Research Tool. 5.6 Product Warranties The reconciliation must show:
- Beginning aggregate warranty liability
- New accruals for warranties issued on products sold during the period
- Payments made, whether in cash or replacement parts
- Adjustments to preexisting warranties from revised estimates
- Ending aggregate warranty liability
The reconciliation exists so investors and creditors can judge whether reserves are adequate. A shrinking liability paired with growing sales invites questions. A pattern of over-accruing and then reversing the excess into income is a form of earnings smoothing that analysts track. The classification of the current-period accrual between COGS and SG&A, meanwhile, shows up not in the reconciliation but in the income statement itself, which is where readers of the financial statements form their view of gross margin and operating margin.