Klaviyo uses billable profiles to size profile-based plans. In its current billing guidance, a billable profile is an active profile that can receive at least one type of marketing. The account must use a plan with enough profile capacity to cover that count.
The important distinction is eligibility, not recent campaign activity. A profile can remain billable even if you have not chosen to email it recently.
Who enters the billable count
A profile with a valid contact channel that remains eligible to receive marketing.
A profile that is no longer eligible on every marketing channel relevant to the plan, or that has been deleted.
Active profiles can include subscribers who explicitly opted in and profiles added through general engagement, such as a checkout or order. Consent rules still govern what you may send. Billing eligibility and marketing permission are related, but they are not interchangeable concepts.
What suppression changes
A suppressed email profile cannot receive marketing email. Klaviyo skips it at send time. For billing, check the account's processed billable count rather than assuming that one channel action removed the whole profile: eligibility on another marketing channel or product can still matter.
Suppression keeps the profile and its historical events. That is useful for attribution, customer service, and later analysis. A manual suppression can also be removed, although removing suppression does not override an unsubscribe, bounce, or other consent and deliverability restriction.
What deletion changes
Deletion permanently removes the profile and is not recoverable. It also removes the profile from future billing, but it does not create an extra billing benefit beyond becoming non-billable.
For routine active profile management, suppression is usually the safer cost-control action because it preserves history and provides a controlled rollback path.
Why the plan may not change with the count
Klaviyo processes bulk suppressions asynchronously. Wait until the billable count updates before deciding which plan can cover the account.
When the count qualifies for a lower tier, the account Owner or Admin can choose that tier from Billing. The downgrade takes effect at the start of the next billing cycle. Klaviyo does not issue a mid-cycle refund simply because the count fell.
Count reduction and plan reduction are separate events. A successful suppression job can lower the billable count while the current plan stays unchanged.
How auto-downgrade works in 2026
Klaviyo documents profile auto-downgrade for email and profile plans using flexible sending. When selected, the plan moves to the lowest tier that covers the active profile count 24 hours before the end of the billing cycle. Auto-downgrade cannot be based on message sends.
If that option is not available for your account or plan setup, use the manual change-plan workflow after the processed count is final.
The operating rule
- Record the current billable count and plan.
- Identify long-term inactive profiles with a conservative segment.
- Review and suppress the approved members.
- Wait for the count to finish processing.
- Choose a lower tier or confirm auto-downgrade.
For the detailed candidate recipe, read Deadweight's methodology. For the end-to-end manual workflow, read how to reduce a Klaviyo bill safely.
Sources: How Klaviyo billing works, active profile management, and suppressed email profiles.
Measure your own account
Use OAuth to create and count a review segment. No private key paste and no suppression during the audit.