Originally published at https://monstermegs.com/blog/ssl-certificate-renewal/
If you have issued a new SSL certificate for your website since March 15, 2026, it is already set to expire sooner than you might expect. On that date, the maximum validity period for any newly issued TLS certificate dropped from 398 days to 200 days – the first stage of a sweeping change approved by the CA/Browser Forum in April 2025. The change makes SSL certificate renewal roughly twice as frequent as it was just weeks ago, and the timeline will keep tightening through 2029. For site owners still relying on manual processes, this is not a future problem. It is an active one.
What Changed on March 15, 2026
The CA/Browser Forum is the industry body that governs how SSL and TLS certificates are issued, validated, and trusted by browsers worldwide. On April 11, 2025, it passed Ballot SC-081v3 – a measure to progressively shorten certificate lifetimes over the next three years. The ballot passed with 29 votes in favour and zero opposed, making it one of the most decisive rulings in the Forum's history. No certificate authority or browser vendor dissented.
The first enforcement milestone arrived on March 15, 2026. Any certificate issued from that date forward carries a maximum validity of 200 days. Certificates issued the day before the cutoff could still carry a full 398-day lifespan. The gap between those two is significant for any administrator managing SSL certificate renewal manually or through ad-hoc calendar reminders, because the renewal window just halved without warning for anyone not paying close attention.
Why SSL Certificate Renewal Has Become Urgent
Before March 2026, most hosting customers and site administrators approached SSL certificate renewal as a roughly annual task – one automated reminder email, one click, done for another year. That rhythm is now broken for anyone issuing new certificates under the current rules. SSL certificate renewal is required at minimum every six months starting today, and the schedule compresses further in the years ahead. By March 2027, the maximum drops to 100 days. By March 2029, it falls to 47 days.
The reasoning behind the change is straightforward. The CA/Browser Forum argues that shorter certificate lifetimes reduce the risk window when a private key is compromised or a certificate is incorrectly issued. Under a 398-day validity window, a mis-issued or stolen certificate could remain trusted by browsers for over a year before it would naturally expire. A 47-day cap cuts that window to less than two months. In this framing, SSL certificate renewal is not merely an administrative obligation – it is a security mechanism with a direct impact on how long threats can persist undetected.
The Three-Stage Timeline From 200 to 47 Days
The ballot was structured as a phased rollout deliberately, giving certificate authorities and website operators time to adapt their SSL certificate renewal infrastructure before the most aggressive requirements take effect.
The Phase-by-Phase Reduction Schedule
Phase one is now active. From March 15, 2026, newly issued certificates cannot exceed 200 days. This supports a twice-yearly SSL certificate renewal cadence that is difficult to manage without automation but not impossible with good tooling and clear alerts.
Phase two arrives in March 2027. The maximum shrinks to 100 days, shifting SSL certificate renewal to a quarterly cycle. At this frequency, a single missed reminder can leave a certificate expiring within weeks, with no buffer time to troubleshoot problems or wait for CA processing.
Phase three lands in March 2029. The 47-day cap means SSL certificate renewal must take place roughly every five to six weeks for every domain you operate. No realistic manual workflow can sustain that across a portfolio of any meaningful size. Automation is not just advisable at that stage – it is the only viable approach.
Who Pushed This Change and Why
Apple was the primary sponsor of Ballot SC-081v3. The company has consistently led industry efforts to shorten certificate lifetimes, previously driving the reduction from five years to one year and then to the 398-day ceiling that just expired. Apple's argument has remained consistent throughout: the longer a certificate remains valid without re-verification, the higher the probability that the domain ownership information it carries is no longer accurate or that the underlying private key has been exposed. Shorter SSL certificate renewal intervals keep that verification data current.
Google, Mozilla, and Microsoft all voted in favour. That cross-browser consensus matters because it signals that all major trust stores will enforce the new limits – there is no path for a CA to issue a longer-lived certificate and have it trusted. DigiCert, Sectigo, GlobalSign, and Let's Encrypt also supported the ballot, suggesting the industry views the operational burden of more frequent SSL certificate renewal as an acceptable trade-off for a meaningfully more secure web.
Certificate Authorities Are Now Adapting
The immediate challenge falls on certificate authorities and the businesses that depend on them. DigiCert has published detailed guidance indicating that organisations relying on manual certificate management need to approximately double their SSL certificate renewal workload under the 200-day rule alone. For enterprises with hundreds of certificates spread across subdomains, load balancers, APIs, and application servers, the additional overhead is significant.
Domain validation reuse periods have also been tightened under the same ballot. Previously, a certificate authority could reuse a completed domain validation check for up to 825 days. That window has been shortened in parallel with the certificate lifetime changes, meaning SSL certificate renewal now requires more frequent re-verification of domain ownership – not just the generation of a new certificate from an existing validated record.
In response, major CAs are expanding their certificate lifecycle management platforms. DigiCert's CertCentral, Sectigo's Certificate Manager, and similar enterprise tools are all being updated to support automated SSL certificate renewal at scale, with API-driven workflows that eliminate the need for human intervention at each renewal cycle.
Automating SSL Certificate Renewal With ACME
The ACME protocol – Automatic Certificate Management Environment – was built precisely for a moment like this. Standardised by the IETF as RFC 8555, ACME allows web servers to request, validate, and install TLS certificates programmatically, with no human involvement required. Let's Encrypt built its entire free certificate service around this protocol and has been providing automated SSL certificate renewal since 2016. For sites already using Let's Encrypt, renewal happens silently every 60 to 90 days via tools like Certbot, acme.sh, or the AutoSSL feature available in cPanel-based hosting environments.
Let's Encrypt and the Rise of Auto-Renewal
Let's Encrypt certificates already max out at 90 days – comfortably within every phase of the CA/Browser Forum's new timeline, including the 47-day cap that takes effect in 2029. Websites running on Let's Encrypt with a functioning ACME client are already compliant with requirements that will not become mandatory for another three years. Their SSL certificate renewal workflows require no immediate changes.
The larger disruption hits organisations that have historically used commercial certificates with annual or 13-month validity periods, renewed manually or through a loosely maintained script. For those operators, the question has shifted from whether to automate SSL certificate renewal to how quickly they can make the transition. Enterprise certificate lifecycle management tools from vendors like Venafi, AppViewX, and Keyfactor are seeing heightened interest as a result. cPanel and DirectAdmin hosting panels are also improving their built-in renewal automation to reduce reliance on manual intervention. If you want to see what fully managed SSL certificate renewal looks like in a shared hosting environment, the SSL certificate options at MonsterMegs include AutoSSL with Let's Encrypt on every plan.
What Site Owners Should Do Right Now
The March 15 change is already in effect. If you have issued a new certificate since that date, your SSL certificate renewal deadline is closer than it would have been under the old rules – 200 days from issuance rather than nearly 13 months. The first priority is confirming that your certificates are configured for automatic renewal. On cPanel-based hosting, check the AutoSSL settings under the SSL/TLS section and verify that the renewal daemon is active and completing jobs successfully.
For sites using commercial certificates from paid CAs, contact your provider and ask specifically about their automated SSL certificate renewal APIs or management portal options. Most major CAs now offer tooling that integrates with common deployment pipelines. Moving to automation is a direct and proportionate response to the CA/Browser Forum's updated rules – not a premature upgrade.
Sites that handle customer transactions, store personal data, or run e-commerce operations face the most serious consequences from a missed SSL certificate renewal. An expired certificate does not only produce a browser warning – it actively breaks HTTPS, destroys visitor confidence, and can interrupt checkout flows entirely. The risk profile of getting this wrong is higher today than at any point in recent history. For a broader look at how server-level security decisions stack up, the post on PHP hosting security risks covers several related areas where neglected maintenance creates compounding exposure.
The Bottom Line
The CA/Browser Forum's unanimous ruling is now the enforced standard for the web. The 200-day SSL certificate renewal requirement has been active since March 15, 2026. The 100-day limit arrives in March 2027, and 47 days follows in March 2029. Anyone still running manual SSL certificate renewal processes needs to treat automation as an infrastructure priority, not something to revisit later.
The tools to make SSL certificate renewal seamless already exist and are widely available – Let's Encrypt and Certbot are free, ACME support is built into most modern hosting control panels, and enterprise-grade lifecycle management platforms are maturing quickly. The cost of getting this wrong is a broken HTTPS connection, a browser security warning, and lost visitor trust. If you are evaluating hosting that handles SSL certificate renewal automatically and keeps your site secure by default, MonsterMegs web hosting plans include AutoSSL through Let's Encrypt on every account.
