Both free and paid SSL certificates encrypt the connection between your website and its visitors, and both will show the padlock icon in a browser. The real differences are in how much identity checking goes into issuing the certificate, what kind of trust signals it gives visitors, and what support comes with it if something goes wrong.
What a free SSL certificate covers
A free certificate, like the one issued automatically through AutoSSL on shared hosting, uses domain validation (DV). This means the certificate authority only confirms that you control the domain, not who you are as a business. It's issued automatically, renews automatically every 90 days as long as your DNS points correctly to your hosting, and costs nothing.
For most small business websites, blogs, and informational sites, a free DV certificate is enough. It encrypts form submissions, login pages, and general browsing, and it satisfies Google's requirement for HTTPS.
What a paid SSL certificate adds
Paid certificates come in a few validation levels:
- Organization Validation (OV): the certificate authority verifies your registered business details before issuing it.
- Extended Validation (EV): a more thorough vetting process that confirms your business's legal existence, physical address, and operating status.
- Wildcard or multi-domain certificates: cover an unlimited number of subdomains, or several separate domains, under one certificate. Some free options offer wildcard coverage too, but paid wildcard certificates typically come with a warranty and longer validity periods.
Paid certificates usually include a warranty (a payout if the certificate authority's own security fails and causes a loss), longer issuance periods (up to a year or more instead of 90 days), and priority support from the certificate authority.
Which one should you choose?
For most Kenyan small business websites, a free certificate through AutoSSL is genuinely sufficient. It provides the same encryption strength as a paid one, and visitors can't tell the difference just by looking at the padlock.
Consider a paid certificate if:
- You run an e-commerce site processing payments directly on your own domain (rather than through a redirect to a payment gateway) and want the added warranty.
- You're in a regulated industry (finance, insurance, healthcare) where clients or auditors specifically require OV or EV validation.
- You need a single certificate to cover many subdomains or multiple separate domains with a long validity period and dedicated support.
Whichever type you choose, keep an eye on renewal. A free AutoSSL certificate renews itself automatically as long as your domain still resolves to your hosting account, but a paid certificate usually needs to be renewed and reinstalled manually before it expires.
To set either one up, see how to install a free SSL certificate with AutoSSL or how to install a paid SSL certificate.