# ZeroSSL — TLS certificate maximum validity by Certificate Authority: what each CA actually issues today

For ZeroSSL, profile or product is Annual; maximum validity (days) is 200; effective date of current limit is 2026-03-15; still issuing tls certificates is yes; notes is Annual certificates provide one year of coverage through multiple certificate issuances; every new certificate follows the 200-day limit and requires a mid-term reissuance to cover the full 1-year period. ZeroSSL no longer offers single 1-year certificate issuances, recorded from its source on 2026-08-18.

- **Certificate Authority:** ZeroSSL _(verified: appears in the quote below)_
- **Profile or Product:** Annual _(our reading, not quoted from the source)_
- **Maximum validity (days):** 200 _(verified: appears in the quote below)_
- **Effective date of current limit:** 2026-03-15 _(our reading, not quoted from the source)_
- **Still issuing TLS certificates:** yes _(our reading, not quoted from the source)_
- **Notes:** Annual certificates provide one year of coverage through multiple certificate issuances; every new certificate follows the 200-day limit and requires a mid-term reissuance to cover the full 1-year period. ZeroSSL no longer offers single 1-year certificate issuances. _(our reading, not quoted from the source)_

## What the source says

> Starting March 15, 2026, SSL/TLS certificates can be issued for a maximum of 200 days . This reflects a shift from the previous 1‑year validity model to a shorter, more secure lifecycle.

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Profile or Product

help.zerossl.com says profile or product is **Annual**, as of 2026-08-18.

> Starting March 15, 2026, SSL/TLS certificates can be issued for a maximum of 200 days . This reflects a shift from the previous 1‑year validity model to a shorter, more secure lifecycle.

Source: https://help.zerossl.com/hc/en-us/articles/34330849350173-SSL-TLS-Certificate-Validity-Changes-New-200-Day-Limit-Explained

zerossl.com says profile or product is **ACME/free**, as of 2026-08-18.

> ACME integrations let you order and renew 90-day certificates automatically and free of charge, using any major ACME client:

Source: https://zerossl.com/features/acme/


### Maximum validity (days)

help.zerossl.com says maximum validity (days) is **200**, as of 2026-08-18.

> Starting March 15, 2026, SSL/TLS certificates can be issued for a maximum of 200 days . This reflects a shift from the previous 1‑year validity model to a shorter, more secure lifecycle.

Source: https://help.zerossl.com/hc/en-us/articles/34330849350173-SSL-TLS-Certificate-Validity-Changes-New-200-Day-Limit-Explained

zerossl.com says maximum validity (days) is **90**, as of 2026-08-18.

> ACME integrations let you order and renew 90-day certificates automatically and free of charge, using any major ACME client:

Source: https://zerossl.com/features/acme/


### Notes

help.zerossl.com says notes is **Annual certificates provide one year of coverage through multiple certificate issuances; every new certificate follows the 200-day limit and requires a mid-term reissuance to cover the full 1-year period. ZeroSSL no longer offers single 1-year certificate issuances.**, as of 2026-08-18.

> Starting March 15, 2026, SSL/TLS certificates can be issued for a maximum of 200 days . This reflects a shift from the previous 1‑year validity model to a shorter, more secure lifecycle.

Source: https://help.zerossl.com/hc/en-us/articles/34330849350173-SSL-TLS-Certificate-Validity-Changes-New-200-Day-Limit-Explained

zerossl.com says notes is **Free ACME-issued certificates are 90 days, renewable automatically with any major ACME client.**, as of 2026-08-18.

> ACME integrations let you order and renew 90-day certificates automatically and free of charge, using any major ACME client:

Source: https://zerossl.com/features/acme/


## Source

- https://help.zerossl.com/hc/en-us/articles/34330849350173-SSL-TLS-Certificate-Validity-Changes-New-200-Day-Limit-Explained
- https://zerossl.com/features/acme/

Last verified: 2026-08-18. Review by: 2026-09-17.
Part of [TLS certificate maximum validity by Certificate Authority: what each CA actually issues today](https://referencesource.org/ca-issuance-validity/).