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Amazon advertising ratio · Free · No signup

Amazon TACoS Calculator

Calculate total advertising cost of sales from the monthly revenue and ad spend you enter, then use the ratio alongside margin and organic-sales trends.

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TACoS

Total Advertising Cost of Sales

TACoS compares total ad spend with total revenue, so it is useful for watching whether advertising is consuming more or less of the whole business.

Live scenario

TACoS

14.0%

$3,500.00 ad spend ÷ $25,000.00 total revenue.

There is no universal “good TACoS”. Compare the trend with contribution margin, organic sales, launch stage and your own growth target.

Shareable result

14.0%TACoS

$3,500.00 ad spend against $25,000.00 monthly revenue. Sharing includes only the displayed result label and value; raw calculator inputs and local detail are not added to the shared URL or analytics event payload.

See paid workflows

What this calculator answers

What percentage of total revenue is currently being spent on advertising?
How does a change in revenue or ad spend move TACoS?
What ratio should you track alongside contribution margin and organic sales over time?

From calculator to recurring workflow

Stop rebuilding the same spreadsheet every week.

The free tool is for one scenario. Solarc Labs paid workflows are for repeated analysis, saved evidence, team handoff and automation.

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Independent tool: Solarc Labs is not affiliated with or endorsed by Amazon, Shopify or WooCommerce. Brand names are used only to describe common seller workflows. Outputs are planning estimates based on the figures you enter and are not tax, customs, accounting, advertising or marketplace-fee advice.