How Much Does Proton Business Cost in 2026?

Proton's competitive positioning is privacy-first workspace — Swiss jurisdiction + end-to-end encryption + zero-knowledge architecture. For legal firms, healthcare consulting, journalism, EU companies requiring GDPR strictness, or any organization where email + file privacy is a business requirement (not just feature), Proton's stack is purpose-built. Mail Essentials at $7.99/user/month annual ($95.88/user/year) is the entry tier: 15 GB encrypted mail storage, 3 custom domains, 10 email addresses per user. For email-only needs without additional privacy tools, Mail Essentials works but misses the Business tier's bundled value. Business at $12.99/user/month annual ($155.88/user/year) is the flagship — the Proton suite bundled: Mail (encrypted email), Drive (encrypted cloud storage), VPN (Proton VPN for team), Pass (encrypted password manager), Calendar (end-to-end encrypted calendar). 500 GB combined Mail + Drive storage, 10 custom domains, 15 addresses per user. For privacy-focused teams, $12.99/user/month for the complete suite is meaningful value — separately, Proton Mail + VPN + Drive + Pass + Calendar would cost $20+/user/month. Business Plus at $22.99/user/month annual ($275.88/user/year) doubles storage to 1 TB + 15 domains + 30 addresses + premium features — for organizations heavily sharing encrypted files or managing many custom domains. Proton for Business is custom enterprise pricing (industry estimates $30-100+/user/month depending on scale) adding dedicated support + SLA + advanced security policies. All Proton services are open-source and independently audited — verifying the encryption claims. The critical caveat: Proton does NOT sign HIPAA Business Associate Agreements (BAAs). For US healthcare organizations requiring HIPAA compliance, Proton is NOT a compliant alternative despite strong privacy positioning. Google Workspace Business Plus+ and Microsoft 365 Enterprise sign HIPAA BAAs — those are the HIPAA alternatives. Proton's Swiss jurisdiction is genuinely strong for legal privacy protections: Swiss law prohibits mass surveillance and requires specific court orders for individual data requests. For journalism, whistleblower workflows, or EU companies wanting non-US jurisdiction, this matters materially. Open-source auditing + zero-knowledge architecture means even Proton cannot access your content under legal pressure. Where Proton Business wins: end-to-end encryption + Swiss jurisdiction + zero-knowledge architecture is category-unique, bundled Mail + VPN + Drive + Pass + Calendar at Business tier ($12.99/user/month) is cost-effective vs buying separately, open-source + independently audited verification of privacy claims, 30-day money-back guarantee for risk-free evaluation, no content-scanning for advertising (unlike Google/Microsoft). Where it loses: no HIPAA BAA for US healthcare compliance, no AI features (no Gemini/Copilot equivalent), no free trial (only 30-day money-back), UI/UX less polished than Google Workspace / Microsoft 365 for non-privacy-focused users, 500 GB Business tier storage limits heavy cloud users, smaller integration ecosystem than Google/Microsoft.