Answers to common publisher questions about joining and running Carbon ads.
Last reviewed: March 7, 2026
Yes, by invitation only. We carefully select both publishers and advertisers to maintain network quality. To request an invitation, submit your site for review.
We evaluate:
Submit your website URL and traffic statistics through our application form. We review applications within 5–7 business days. If approved, you'll receive an email invitation with setup instructions. If we don't have capacity or your site isn't a fit, we'll let you know and you're welcome to reapply later.
Carbon is an exclusive network. When you join, you agree to display only Carbon ads on your site and not use Carbon as backfill for other ad networks. See our placement policy for details.
English-speaking developers and designers, primarily in the United States, Canada, and Europe. These regions usually have the strongest demand and highest fill rates. We also serve other regions when advertiser demand allows.
Typical range: $0.50–$1.10 CPM (cost per thousand impressions). Your actual CPM depends on audience engagement (CTR), geographic mix, and current advertiser demand, and is not guaranteed.
Net-30. We pay within 30 days after the month ends for that month's impressions. Earnings go to your BuySellAds account, which we create automatically when you join. You can withdraw once you meet the minimum balance for your selected method.
We also support Open Collective payouts. Ask your account manager to enable this option. Applicable Open Collective and host fees depend on your account setup.
Quarterly (current policy). As of March 2026, Open Collective payouts are processed once per quarter. For example, earnings from April–June are paid out in July. Ask your account manager if your account has custom timing.
$1 (before withdrawal-method minimums are applied).
They rarely match exactly. A page view and an ad impression are different measurements. Carbon reports served impressions only, meaning we count impressions when an eligible Carbon ad request is served and renders. If a visit has no eligible demand, that page view won't become a Carbon impression.
Other common reasons for discrepancies: