The question behind the question
You have chosen a window and probably a fabric, and now you have to decide what the curtains actually hang from. Pole or track is not a question about which one is better. It is three smaller questions: do you want the hardware seen, is the window a straightforward shape, and how do the curtains need to move.
Answer those in order and the choice usually makes itself.
A pole makes the hardware part of the room
A pole is visible on purpose. It runs above the window with a finial at each end, and the curtain hangs from rings or straight through eyelets, so you see the pole between the folds when the curtains are open. On a plain rectangular window with a reasonable run of wall above it, that horizontal line does decorative work as well as structural work.
That suits a room where the woodwork, the fireplace or the furniture already sets a material tone. Matching the finish, or deliberately contrasting it, becomes part of the scheme. If you are weighing up how a pole will read in the room, the comparison of wood and metal poles works through what each material does visually and structurally.
A pole does need space around the window. You want enough height above the frame for the brackets and for the curtain to clear the glass, and enough wall either side for the curtains to sit back off the window when they are open. If either is tight, say the frame runs close to the ceiling or into a corner, a pole starts to fight the room. It is worth checking that before you fall for a finial, and worth browsing the curtain poles with those two measurements already in your head.
A track lets the hardware disappear
A track is designed to be seen as little as possible. The curtain hangs from gliders and the heading usually stands slightly proud of the track, so from the front you see fabric and very little else. Painted or supplied in white, fixed close to the ceiling, a track reads as part of the building rather than as an object.
That is the right answer more often than people expect. It suits rooms with almost no wall above the window, ceilings you want to draw the eye up to, tall windows where a full-height curtain looks better without a pole cutting across the top, and any window where you simply do not want more visual clutter. Tracks also mount to the ceiling, which a pole generally cannot do, and many can be bent or angled to follow a shape a straight pole cannot. The curtain tracks are the place to start if any of that describes your window.
Your heading narrows it down quickly
The curtain heading is often the deciding factor, and people meet it last when it should come near the first.
Eyelet curtains thread directly onto a pole, so they need a pole, and the pole diameter has to suit the eyelet. Headings that hang on hooks, such as pencil pleat and pinch pleat, are flexible: the hook goes into a ring on a pole or a glider on a track, so both are open to you. Wave headings need a system built for them, because the fabric is held at set intervals, and those are usually specific track or pole systems rather than anything you can improvise.
Read the curtain headings guide before you commit to hardware, not after. A heading you have set your heart on can quietly rule out half the options.
Weight, width and support
Heavier curtains need adequate support, and that is true of poles and tracks alike. Interlined curtains, heavy velvets and full-height drops across a wide opening put real load on whatever is holding them.
With a pole, start with the diameter. Lighter curtains at a modest window sit happily on a 19mm or 25mm pole. For most rooms 28mm is the sensible default. Heavy, interlined or unusually wide curtains want 35mm or 45mm, where the thicker section does the work.
Then count the brackets. A long span held only at its two ends is where sagging starts, so fit a centre bracket on any pole over 200cm and a third bracket over 300cm. That affects how the curtains cross the middle, which is what passing brackets are for: they are shaped so the rings travel over them and the pair still closes. With a track, choose a system built for heavier curtains rather than a light domestic profile, and follow the bracket spacing the manufacturer sets out.
Span and load limits are set range by range rather than across the board, so the figures for the system in front of you are on its product page and in the supplier's fitting instructions. Read those before you order if the curtains are on the heavy side, and treat the hardware as a structural decision rather than a finishing touch. Send us the width, the drop and the fabric through the contact form and we will check a particular range against them.
How the curtains need to move
Think about who opens these curtains and how often. A curtain that is drawn twice a day, in a room where you can reach the leading edge easily, is happy being hand drawn. Curtains behind a sofa, above a radiator, at the top of a stairwell or in a bay you cannot walk into are a different matter, and that is where a corded system starts to earn its place. Cording also keeps hands off the fabric, which matters on pale or delicate cloth.
Poles can be hand drawn or, in some ranges, corded. Tracks are made in both, and are also the usual route to a motorised system. The comparison of corded and hand-drawn tracks goes into how each feels in daily use.
Windows that decide for you
Some windows narrow the field on their own. A bay needs hardware that turns corners, which means a bay-capable pole system with corner fittings and passing brackets, or a track bent to the shape of the window. A window running close to the ceiling, or a room where you want the curtain to start at ceiling height, points to a ceiling-mounted track. Patio and bifold doors need the curtains to clear the opening completely when they are open, which is a stack-back problem more than a hardware problem, but tracks often solve it more neatly.
The honest rule is not to force a standard straight pole into a window that is not straight. It rarely looks right and it usually does not work.
Where to go next
If you can answer three things, you can order with confidence: whether you want the hardware visible, what heading the curtains will have, and how much wall you have either side of the window. If any of those is still open, or the window is an awkward shape, the free design consultation is the sensible next step. It is easier to talk a bay or a difficult ceiling through with someone than to guess at it.