How do I account for Amazon advertising costs in my books?
Amazon advertising costs should be recorded as a marketing or advertising expense, separate from your cost of goods and Amazon seller fees. The accounting treatment is simple. The challenge is extracting clean data from Amazon’s consolidated reporting.
Amazon deducts advertising costs from your settlements before depositing funds to your bank account. The net deposit you see is already reduced by ad spend, referral fees, FBA charges, and everything else Amazon takes out. If you just record the bank deposit as revenue, you’re understating both your sales and your advertising expenses. Your books will balance but they won’t tell you anything useful about how much you’re actually spending to acquire customers.
Pull your advertising reports directly from Amazon’s advertising console rather than relying solely on settlement reports. The console gives you detailed breakdowns by campaign, ad type, and time period. This granularity helps you understand what’s working and where you’re wasting money. Settlement reports lump everything together in a way that makes analysis nearly impossible.
In your chart of accounts, create an advertising or marketing expense account specifically for Amazon ads. Don’t combine this with Amazon’s selling fees or referral commissions. Ad spend is a discretionary cost you control. Referral fees and FBA charges are direct costs of selling on the platform. Keeping them separate lets you see true product margin versus marketing investment at a glance.
If you’re running significant e-commerce volume through Amazon, consider integration tools like A2X or Link My Books. These connect to your Amazon account and automatically break out advertising costs, fees, refunds, and net revenue into your accounting software. The time savings add up quickly and the data is more reliable than manual extraction from multiple Amazon reports.
Track your advertising as a percentage of revenue each month. If you’re spending 30% of revenue on advertising but your product margins are 25%, you’re losing money on every advertised sale. Good small business bookkeeping makes this obvious before it becomes a serious problem. The goal isn’t just recording the expense correctly. It’s having numbers that actually help you make better decisions about where to put your ad dollars.
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