The short answer is no, most people do not need one, and a tall studio easel is actively the wrong tool for this kind of painting.
That is not the answer most articles give, so it is worth explaining why.
Why a studio easel does not suit numbered work

An upright easel exists so a painter can stand back, hold a brush at arm's length and judge a whole composition at once. That is the right posture for painting a landscape from life, where the decisions are about proportion and value across the entire canvas.
A numbered canvas asks for the opposite. You are working eight to eighteen inches from the surface, filling a shape a quarter of an inch across, and checking a printed number that is smaller than the text you are reading now. Standing back is not part of it, except occasionally to see how it is going. Put that work on a full-height easel and you spend the evening leaning in toward a canvas that is trying to be a foot further away than you want it.
Most people paint these flat on a table, and that is a perfectly good way to do it.
The real problem is your neck, not your canvas
What sends people looking for an easel is usually an ache after an hour: the back of the neck, the upper shoulders, sometimes the lower back. That comes from looking straight down at a flat canvas for a long time, with your head tipped forward and its full weight hanging off your neck.
The fix is a tilt, not a stand. Raising the far edge of the canvas by even fifteen or twenty degrees brings the work up toward your eye line and lets your head sit closer to upright. That is most of the benefit an easel offers, and you can have it for nothing:
- A large hardback book, or two, under the far edge of a board.
- A wooden or metal tabletop easel, the small kind that folds flat and sits on the table in front of you.
- A kitchen cookbook stand, if the canvas is small enough to sit in one.
Adjust the angle until you can work with your chin roughly level rather than on your chest. If your paint runs downhill, the angle is too steep for the consistency you are using.
The two cases where an easel genuinely helps
You cannot sit comfortably at a table. If a wheelchair, a recliner or a bad back means a dining table is not workable, a stand that brings the canvas to you changes the activity from impossible to pleasant. This is the strongest reason of the lot and it has nothing to do with painting technique.
You want to leave it set up. A canvas that has to be packed away after every session gets painted less often. An easel in a corner of the room with the picture already on it is an invitation every time you walk past, and that matters more over ten to twenty hours than any question of posture.
What is in our kits
Our framed sizes include a small wooden tabletop easel, which is the type described above. The unframed canvases do not, and we would rather say so plainly than let you find out when the box arrives.
There is a practical reason for that. A loose unframed canvas cannot sit on an easel at all, because there is nothing rigid to hold. If you are working with one, tape it flat to a piece of foam board or hardboard first, and then the board can go on an easel or be propped up on anything. Our guide to framing a paint by number canvas covers what to do with it afterwards, including the option we would not recommend. If you want one anyway, the framed kits include a small wooden tabletop easel, so there is nothing extra to buy.
If you do buy one, buy the small kind
We are not going to recommend a particular brand, but the category matters. A tabletop easel that folds flat is the right shape for this work: it sits on the table, it holds a canvas up to about 20 inches, it costs very little and it puts nothing between you and the picture.
Floor easels, H-frame studio easels and the wooden box easels made for painting outdoors are all built for larger canvases and for standing to paint. They are good pieces of equipment for the job they are designed for, and that job is not this one.
Spend the money on light instead
If there is one purchase that improves a numbered kit more than any easel, it is a decent adjustable lamp that comes over your shoulder onto the canvas. The most common complaint in this whole category is that the printed numbers are hard to read, and a good lamp solves more of that than anything else you can buy. A magnifier for the finest sections helps too, and there is nothing embarrassing about using one.
After that, a single good fine brush is the next best thing you can add, which we have gone into in our note on small paint brushes.
If you are setting up for a first canvas, our guide for beginners walks through the whole table, and how long a paint by number takes will tell you how many evenings you are setting it up for.