Maintenance, care plan or retainer: which should you sell?

A physiotherapy clinic is choosing what to buy after its new website launches. The designer's email offers "maintenance", then mentions a "care plan" on the second page, and on the call says "or we could do a retainer". The owner asks the obvious question: "Are those three different things, or three names for the same one?"

If you can't answer that in a sentence, the client can't choose, and whatever they pick will be misunderstood by one of you within three months.

Here's the sentence. Maintenance keeps the site working. A care plan is maintenance plus a fixed list of small changes, a reply time and a monthly note, for a fixed monthly price. A retainer books a block of your time each month for whatever the client needs, priced by that time. For most small local businesses, a care plan is the one to lead with.

What is the difference between maintenance, a care plan and a retainer?

	Maintenance	Care plan	Retainer
What the client buys	Upkeep of the site	A set monthly service	A block of your time
Includes content changes	Usually not	A set number of small ones	Anything that fits the hours
How it's priced	Fixed monthly fee	Fixed monthly fee	By the hours reserved
What the client knows in advance	What you check	What you do and what's extra	How much time they have
Best for	Clients who edit their own site	Most local businesses	Clients with regular new work
Common trouble	"I thought changes were included"	Arguing about what counts as small	Unused hours, or hours running out mid-month

The names aren't legal terms, and other designers use them differently. That's fine. What matters is that you use each word the same way every time, in the quote, the invoice and the monthly note.

What does website maintenance cover?

The work that keeps the site running and safe, most of which the client never sees:

• Updates to the site's software and add-ons. WordPress's own documentation recommends taking a backup before updating, so a bad update can be undone.
• Backups, how often, and where they're kept.
• The security certificate, the thing behind the browser padlock. Let's Encrypt, a free certificate provider, announced in December 2025 that its certificates will get shorter, from 90 days to 45 days, in stages by 2028. Automatic renewal handles this for most sites, and the 45 day SSL certificates change is a good reason to check renewal is really working.
• A check that the site is up, and what you do when it isn't.

Maintenance alone suits a client who edits the site themselves, such as a shop with someone on staff who updates products. It's a hard sell to a busy owner who can't see the work, so describe it by what it prevents: a site that stops loading, a padlock that turns into a warning.

What makes a care plan different?

A care plan wraps maintenance into a service the client can understand at a glance. On top of the upkeep, it adds:

• a fixed number of small content changes each month, defined by examples;
• how quickly you reply on a working day;
• a short monthly note of what you did and anything the client needs to decide;
• a written list of what's not included, with "quoted first" beside it.

That last list is what makes a care plan work. What a website care plan should include goes through each part, with a table of what usually counts as a small change.

The client buys certainty: a known price and a known promise. You get a clear line between "included" and "extra", which is worth more to a one-person agency than the fee itself.

When does a retainer make sense?

When a client has a steady stream of new work that doesn't fit a fixed list. A restaurant group adding a page for each seasonal menu. A builder who wants a new project gallery every month. A shop running a sale every few weeks.

A retainer reserves your time for them, for example a set number of hours each month, and they decide how to spend it. That flexibility is its strength and its risk. Settle these questions in writing:

• Unused hours. Do they carry over? Many designers say no, because the retainer pays for time set aside, not only for work done. If you allow carry-over, cap it.
• Running out. What happens when the hours are used up mid-month: does work stop, wait for next month, or get billed at your usual rate?
• Tracking. How you'll show the hours used. A retainer without a simple record turns into a trust problem.
• What's still separate. Big projects, like a redesign or a booking system, usually get their own quote even for retainer clients.

Retainers also suit services beyond the website. A client who wants a monthly review of their Google listing, or help deciding whether an AI receptionist for a small business would catch their missed calls, may be better on reserved time than on a fixed list.

Which should you sell to a small local business?

Lead with the care plan. Offer the others when the client's situation calls for them.

• Care plan if the client wants the site looked after and a few changes each month without thinking about hours. This fits most cafés, dentists, trades and shops.
• Maintenance only if someone at the business already edits the site and they only need the upkeep.
• Retainer if they regularly want new pages, campaigns or features, and they're happy to plan around a block of time.

If a care plan client keeps asking for more than the plan covers, that's the moment to suggest a larger plan or a retainer, not to absorb the extra work.

How do you price each one?

Price from your own time and costs, not from someone else's price list. Published prices for these services vary so much that copying one tells you little about your own work.

• Maintenance: your fixed costs per site (hosting if you include it, backup storage, paid tools) plus the time for the monthly routine, plus a margin for the month something breaks.
• Care plan: the maintenance price plus the time for the small changes you've promised and the monthly note.
• Retainer: the hours reserved at your rate. Some designers set a minimum number of hours so the arrangement is worth keeping open.

Whatever you charge, keep the quote, the first invoice and the renewal together, so the client sees the same name and the same promise each time. Keeping quotes, deposits and payments in one place makes that easier when you have several clients on different plans.

How do you write each one down?

One page per service, in words the client would use. A service recipe is a simple format for it: what the service needs, how you set it up and check it, what the client gets each month, what costs extra, and how it ends.

Use the same headings for all three, so a client comparing them sees the differences side by side:

1. What we look after.
2. What we do every month.
3. What changes are included, with examples.
4. What's not included.
5. How to reach us and how fast we reply.
6. Price, billing date and how either side can stop.

If you sell more than websites, the same page works for every service. Services to sell after the website lists the kinds that fit a one-person agency.

For a one-person AI agency, the words you choose matter less than keeping them steady. Call it a care plan in the quote, the invoice and the monthly note, and the physio clinic never has to ask which of the three it bought.