Freelancers can maintain a steady, even income if they have a solid number of clients on a monthly basis. And this is doable especially when there are clients who pay them on a regular basis every month while on retainer.
With monthly retainers, most clients will give you as much as you can deliver in terms of workload.
If you’re really lucky, a client or two might even pay you just to keep your schedule available for them, regardless of whether you are actually needed or not.
Although the chances of this happening are quite rare, it is still a great possibility. The bottom line is, freelancers can get a lot of opportunities while on a monthly retainer setup.