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Paid plans start at $3/mo. There's also a free plan.
Duo starts at $3 per user per month for Duo Essentials, with a free plan for organizations of 10 or fewer users. Duo Free includes strong MFA, integrations and a free authenticator app; Essentials adds phishing-resistant MFA, passwordless authentication, SSO and unlimited applications. Advantage is $6 and Premier is $9 per user per month. The pricing page does not publish annual rates, and license purchases come in set increments for some organization sizes. Duo also lists a 30-day free trial.
01Every plan, line by line
| Plan | Billed annually | Billed monthly | Built for |
|---|---|---|---|
| Duo Free | — | $0 | Small businesses with 10 or fewer users |
| Duo Essentials | — | $3 | Simple security management and authentication |
| Duo Advantage | — | $6 | Dynamic threat detection and authentication |
| Duo Premier | — | $9 | Comprehensive identity security and device trust |
Add-ons and overages
- For under 100 users, licenses are purchased in increments of 10.
- For over 100 users, licenses are purchased in increments of 25.
What a team pays per month
| Plan | 1 seat | 5 seats | 10 seats | 25 seats |
|---|---|---|---|---|
| Duo Essentials | $3 | $15 | $30 | $75 |
| Duo Advantage | $6 | $30 | $60 | $150 |
| Duo Premier | $9 | $45 | $90 | $225 |
02What the plan grid doesn't tell you
Annual billing
The pricing page lists monthly per-user rates, but annual prices are not published. Budget from the listed rate until Duo confirms your annual cost.
License increments
Under 100 users, licenses are purchased in increments of 10; over 100 users, increments of 25. Some organizations may pay for seats they do not use.
Free-plan ceiling
Duo Free covers up to 10 users. Organizations needing more than 10 users should consider a paid plan; further free-plan limits are not published.
Trial terms
A 30-day free trial is listed, but the pricing details do not say which plan it covers or what happens when the trial ends.
03Which plan should you buy?
| If you are… | Get | Why |
|---|---|---|
| Small teams needing MFA | Duo Free | It covers up to 10 users and includes strong MFA, integrations and a free authenticator app. |
| Teams needing SSO | Duo Essentials | For $3 per user monthly, it lists Duo Directory, phishing-resistant MFA, passwordless authentication, SSO and unlimited applications. |
| Teams needing risk and device controls | Duo Advantage | At $6 per user monthly, it adds identity intelligence, session theft protection, Active Directory Defense and risk-based authentication. |
04Is Duo worth the money?
Duo is worth considering if you need MFA alongside directory and SSO rather than a standalone authenticator: Essentials lists phishing-resistant MFA, passwordless authentication, Duo Directory, SSO and unlimited applications for $3 per user monthly. The $6 and $9 tiers add more identity-risk and device-security features. But annual prices are unpublished, and license increments can affect the bill. Treat the listed monthly rates as a starting point, not a confirmed quote.
Duo pricing FAQ
How does a Duo work?
Duo combines MFA, a directory, single sign-on and identity analytics. Organizations can use it as a full identity and access management solution or broker secure access from identity sources they already use. Its phishing-resistant authentication methods are designed to work without extra hardware.
How much does Duo MFA cost?
Duo Free costs $0 for up to 10 users. Paid plans start with Duo Essentials at $3 per user per month; Duo Advantage is $6 and Duo Premier is $9 per user per month. Annual prices are not published, and license increments apply to some organization sizes.
How is Duo priced?
Duo lists prices per user per month: $0 for Duo Free, $3 for Essentials, $6 for Advantage and $9 for Premier. Annual billing prices are not published. Organizations under 100 users buy licenses in increments of 10; those over 100 buy in increments of 25.
Can you use Duo for free?
Yes. Duo Free covers up to 10 users and includes strong MFA, integrations and a free authenticator app. Duo also lists a 30-day free trial, but the pricing details do not specify which plan the trial covers.