ConvertKit vs HubSpot Marketing
Side-by-side total cost of ownership: subscription fees, labor, hidden costs, and AI alternatives.
Published pricing
The subscription is only part of the cost.
| ConvertKit | HubSpot Marketing | |
|---|---|---|
| Published rate | $33/seat/mo | $45/seat/mo |
| Team size modeled | 1 | 3 |
| Annual subscription | $396/yr | $1,620/yr |
What the invoice doesn't show
ConvertKit
Kit's Newsletter plan (free) supports up to 10,000 subscribers but blocks visual automations, sequences, and third-party integrations. The features that make email marketing effective require Creator ($39/mo, up 35% since September 2025) or Creator Pro ($79/mo).
Pricing scales steeply with subscriber count after the September 2025 increase. At 25,000 subscribers, Creator costs $99/mo and Creator Pro $166/mo. At 55,000 subscribers, Creator Pro hits $340/mo — well into enterprise tool pricing for what remains a creator-focused platform.
Kit lacks built-in A/B testing for email content (only subject lines). There's no send-time optimization, no multivariate testing, and limited segmentation compared to marketing automation platforms at similar price points.
Kit's visual automation builder, while praised for simplicity, can't handle complex conditional logic. Users report needing to build workarounds with tags and segments for workflows that tools like ActiveCampaign handle natively.
HubSpot Marketing
Professional requires a $3,000 mandatory non-refundable onboarding fee charged at signing — Enterprise requires $7,000 — regardless of whether your team uses the service.
Marketing contacts auto-escalate but never auto-downgrade: crossing 2,001 contacts on Professional immediately triggers the 5,000-contact tier, adding ~$250/month — even temporarily importing 50 contacts past a threshold locks in the higher rate.
Professional and Enterprise plans are annual contracts with no mid-term exits. Miss the cancellation window and HubSpot auto-renews for another 12-month term at your current rate.
Core capabilities are metered add-ons on top of the $890/mo base: a dedicated sending IP runs ~$300/mo, the reporting add-on ~$200/mo, API limit increases ~$500/mo, and Breeze AI credits ~$30/mo per 1,000 credits.
What teams are switching to
Replacing ConvertKit
Beehiiv
Free (2.5K subs), $49/mo (Scale), $109/mo (Max)
Newsletter platform built for growth with AI writing tools, built-in referral program, and ad network for monetization. Free plan includes unlimited sends and up to 2,500 subscribers. Designed for the creator economy Kit pioneered.
MailerLite
Free (500 subs), $10/mo Growing Business, $20/mo Advanced
Full visual automation on paid plans starting at $10/mo vs Kit's $29/mo. AI writing assistant, A/B testing (not just subject lines), and send-time optimization included. More features at a lower price point.
Buttondown
Free (100 subs), $9/mo (Basic), $29/mo (Professional)
Minimalist newsletter tool for writers who want clean design without bloat. Markdown-native editor, built-in analytics, and paid subscription support. Free for up to 100 subscribers.
Replacing HubSpot Marketing
ActiveCampaign
Starter $15/mo, Plus $49/mo, Pro $79/mo at 1,000 contacts (annual billing); scales by contact count
Delivers comparable marketing automation depth — 950+ automation templates, predictive sending, behavioral triggers, and lead scoring — at a fraction of HubSpot Professional's price. No mandatory onboarding fee and no annual lock-in trap; contact-count pricing scales linearly without punishing tier jumps.
Brevo
Starter from $9/mo; Business from $49/mo — priced per emails sent, not per marketing contact stored
Prices by email volume rather than contact count, which eliminates the core escalation mechanic that makes HubSpot expensive at scale. Full branching automation, A/B testing, SMS, and landing pages are available from the Business tier with no forced onboarding fees or annual lock-in.
EngageBay
Free plan; Basic $11.95/user/mo; Growth $45.99/user/mo; Pro $79.99/user/mo (annual billing)
An all-in-one platform (CRM, marketing automation, and helpdesk in a single subscription) that removes the add-on stacking that inflates HubSpot TCO. Includes unlimited contacts on Pro, advanced A/B testing, and custom reporting at a per-user price well below HubSpot's per-seat add-on rate, with no mandatory onboarding fee.
StackCut doesn't sell or recommend any of these tools. We show them for context. The decision is yours.
Total Cost of Ownership
Subscription fees plus labor and error costs, modeled at $50/hr loaded rate (BLS ECEC).
| Cost Component | ConvertKit | HubSpot Marketing |
|---|---|---|
| Annual subscription | $396 | $1,620 |
| Labor cost | $9,000 | $9,000 |
| Error & rework cost | $1,200 | $1,200 |
| Total Cost of Ownership | $10,596/yr | $11,820/yr |
| Est. AI alternative | $5,088/yr | $5,088/yr |
Labor rate based on BLS ECEC June 2025 ($45.65/hr private industry total compensation, rounded to $50). Team sizes differ because each vendor targets different market segments. Your actual numbers depend on team size, role mix, and usage. Run it with your own data.
Which one fits your team?
Both ConvertKit and HubSpot Marketingcost more than their published pricing suggests. The right choice depends on your team size and how you weigh each tool's trade-offs.
ConvertKit starts at $33/seat/mo , but watch for Kit's Newsletter plan (free) supports up to 10,000 subscribers but blocks visual automations, sequences, and third-party integrations. The features that make email marketing effective require Creator ($39/mo, up 35% since September 2025) or Creator Pro ($79/mo).
HubSpot Marketing starts at $45/seat/mo , but watch for Professional requires a $3,000 mandatory non-refundable onboarding fee charged at signing — Enterprise requires $7,000 — regardless of whether your team uses the service.
An AI-native alternative may replace the workflow at a fraction of the TCO.
See all SaaS cost comparisonsBrowse alternatives for every tool
FAQ
ConvertKit vs HubSpot Marketing: quick answers
Is ConvertKit or HubSpot Marketing cheaper?
On total cost of ownership, ConvertKit runs about $10,596/year (1-person team) versus $11,820/year for HubSpot Marketing (3-person team) once labor and hidden costs are counted, not just the published subscription. Adjust the inputs to your own team to compare them directly.
What can replace ConvertKit or HubSpot Marketing?
ConvertKit is often replaced by Beehiiv and MailerLite; HubSpot Marketing by ActiveCampaign and Brevo. StackCut shows the cost case for each AI-first alternative without taking referral fees.
What are the hidden costs of ConvertKit and HubSpot Marketing?
ConvertKit: Kit's Newsletter plan (free) supports up to 10,000 subscribers but blocks visual automations, sequences, and third-party integrations. The features that make email marketing effective require Creator ($39/mo, up 35% since September 2025) or Creator Pro ($79/mo). HubSpot Marketing: Professional requires a $3,000 mandatory non-refundable onboarding fee charged at signing — Enterprise requires $7,000 — regardless of whether your team uses the service.
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