The Alteration Ledger: Which Suit Fixes Earn Their Keep

A suit that fits imperfectly is not a bargain. In the UK, alterations are part of owning tailored clothing rather than an admission of failure, but the trade has a hierarchy of risk. Some fixes are routine, affordable and transformative; others ask a tailor to rebuild the architecture of a jacket and rarely end well. The sensible approach is to think like a ledger: what does each alteration cost, what does it change, and what is the risk of making the garment worse?

Start With the Garment's Ceiling

Before discussing any alteration, establish the suit's ceiling. Shoulders, collar and the relationship between chest and armhole are the expensive geography. If the shoulder line is markedly too wide or narrow, or the collar stands away from the neck, the jacket is probably the wrong jacket. No amount of waist suppression will correct it. A tailor can pin a jacket into an apparently better shape, but the balance will show when the wearer moves. This is the first false economy: buying a suit because it is cheap and assuming alterations will supply the missing fit.

Sleeve Length and Trouser Hemming: The Reliable Returns

Sleeve shortening is among the safest and most worthwhile alterations. A jacket sleeve should end at the wrist bone, allowing roughly one to one-and-a-half centimetres of shirt cuff to show. In most UK tailoring shops, shortening plain sleeves costs about £25 to £45. If the cuff has working buttonholes, expect £50 to £90, because the buttons and buttonholes may need to be moved or the sleeve shortened from the shoulder. The latter is more skilled work but can preserve the cuff detail. Verdict: pay for it, provided the sleeve is not already too short.

Trouser hemming is equally dependable. A plain hem typically costs £15 to £30; turn-ups or cuffs £25 to £40. For UK weather and formal dressing, a slight break or no break is usually cleaner than a deep fold of cloth around the shoe. Ask for the hem to be set while wearing the shoes you intend to wear. Tapering a wide trouser leg costs about £25 to £45 and can help a full-cut suit, but it will not turn a poor cloth into a good one. Verdict: pay for hemming; consider tapering only when the leg is genuinely excessive.

Waist Suppression: Useful Within Limits

Taking in the jacket waist is common and usually successful. A competent tailor will work from the side seams and back seam, preserving the line of the front. Expect £30 to £60. The limit is roughly two to four centimetres; beyond that, pockets begin to travel towards the back, the lapels can bow, and the jacket may feel tight across the kidneys when seated. Trouser waist adjustments are similarly modest in cost: £20 to £35 for the waist, £30 to £50 if the seat needs attention. Verdict: pay for minor suppression, but do not expect it to disguise a jacket that is a size too large.

Shoulder Adjustments: High Cost, High Consequence

Shoulder work is where many alteration budgets go to die. Shortening a shoulder or reducing its width can involve removing the sleeve, recutting the armhole and resetting the sleeve head. Prices commonly start around £80 and can exceed £200, depending on the construction and the tailor. Even then, the result is not guaranteed: shoulder padding, canvas and the angle of the sleeve are interdependent. A small adjustment may be justified on an otherwise excellent jacket; a large one on a cheap suit is rarely sensible. Verdict: usually a false economy. If the shoulders are wrong, return the suit or walk away.

Other Fixes That Consume Money

Shortening the jacket length sounds simple but changes the balance between torso and leg. It costs roughly £40 to £70 and can make a jacket look oddly cropped if taken too far. Moving pockets, slimming the chest, or reshaping the lapels are specialist jobs with limited tolerance. Letting out a garment is possible only where there is sufficient seam allowance; many ready-to-wear suits have very little. Working buttonholes on a sleeve that is already the right length is an expensive decoration, not a fit improvement. Verdict: treat these as optional refinements, not rescue work.

When to Walk Away

The decisive calculation is total alteration cost against the price and quality of the suit. As a rough UK rule, if the work needed exceeds 30 to 40 per cent of what you paid for the garment, the bargain is questionable. A £90 suit that needs £160 of alterations is not a £90 suit; it is a £250 suit with uncertain construction. Walk away when the shoulders are wrong, the collar gapes, the jacket is more than one size too large, or the cloth is so lightweight that every seam shows the strain. A good alterations tailor will tell you when a suit is not worth the work. Listen to that assessment.

A Sensible Sequence

Wear the shirt and shoes you will use, have the suit pinned, and ask for a written estimate. Prioritise sleeve length, trouser hem and minor waist suppression. Leave shoulder work, jacket length and pocket changes for garments that deserve them. In the UK, a modest alteration budget of £60 to £120 will usually cover the routine fixes on a suit that already fits at the shoulders. That is money well spent. The false economy is spending more on surgery than the patient is worth.