What Drives Knit Fabric Cost — and Which Variables You Can Control

Key Sourcing Takeaways

• Yarn fiber and composition set the cost floor — moving from pure cotton to a cotton-polyester blend, or from virgin to GRS-certified recycled polyester, moves the per-kilo price before construction is even considered.
• Construction complexity is a cost multiplier: a jacquard or double-knit structure can price measurably higher than a comparable-weight single jersey, even at identical GSM.
• Finishing treatments stack independently — brushing, mercerizing, and functional coatings are each a separate process cost; two fabrics at the same GSM can differ substantially in final price based on finishing specification alone.

MOQ is the one lever buyers can actively operate: consolidating colorways, simplifying specs, or selecting stock compositions reduces effective per-unit cost without touching the product specification. For example, two quotes may arrive for “180 GSM cotton knit.” One is $4.20 / kg, the other $6.80 / kg. The specs look identical on paper. The gap isn’t a mistake — it reflects four variables that most RFQs don’t capture: yarn composition, construction type, finishing treatment, and MOQ tier. Here’s how each one moves the number, and which ones your sourcing team can actually influence.

Yarn Fiber and Composition: Where Knit Fabric Cost Starts

The fiber specification — before any knitting, dyeing, or finishing — establishes the price floor for every order. Cotton remains the most widely sourced natural fiber for knit constructions, but the range within “cotton” is wide: commodity ring-spun, long-staple options, organic-certified, and cotton blended with polyester or elastane each sit at different price points. Polyester often gives buyers a lower raw-material baseline than many natural-fiber options, while nylon should be priced separately because its cost position changes more sharply by grade, yarn specification, and market conditions.

Recycled polyester, certified under the Global Recycled Standard (GRS), can carry a premium over virgin polyester depending on market conditions and the traceability requirements of the certification chain — though the margin varies by order size and sourcing region. For brands with ESG sourcing mandates, the certification cost is generally auditable and predictable once the supply chain is established. For authoritative context on what GRS certification requires from supply chain participants, Textile Exchange’s Recycled Claim & Global Recycled Standard documentation is the primary reference.

Blended compositions add a coordination layer: multi-fiber yarns require matched dyeing protocols and may involve longer sampling lead times to confirm colorfastness consistency across the blend. For buyers working within a tight cost ceiling, moving from a pure-cotton spec to a cotton-polyester blend is often the single most accessible lever — it reduces raw material cost while maintaining relevant performance characteristics for most knit end-uses. A jersey knit fabric in a cotton-polyester blend, for instance, can be priced noticeably lower than an equivalent-GSM all-cotton construction without any change to the base fabric structure.

Construction Complexity: The Cost Multiplier Most Buyers Underestimate

Fiber type sets the floor; construction determines how far above that floor the final cost lands. More complex structures require longer machine setup times, higher yarn throughput per square meter, more precise tension control during knitting, and greater QC rejection risk — all of which show up in the quoted price per kilogram.

A single-jersey construction, built on one needle bed with simpler loop formation, is usually the most production-efficient knit structure, so cost per kilogram at comparable GSM often sits below more complex alternatives. Moving to a double knit fabric means two needle beds working simultaneously, roughly doubling interlocking complexity and increasing knit cycle time per meter. The result is a denser, dimensionally stable fabric with a finished reverse face — structural properties that are genuinely useful for tailored or performance applications, but worth confirming are specification-driven rather than assumed.

At the upper end of construction complexity, jacquard knit fabric involves programmed needle selection for each course, enabling color or texture patterning built directly into the fabric structure. The setup includes pattern programming, yarn creel changes, and trial runs before production fabric meets specification. The per-unit cost of a jacquard construction can run significantly higher than a plain-knit alternative at the same GSM — and that cost is largely fixed, meaning it amortizes more efficiently at higher order volumes. For brands developing proprietary fabric patterns, the development investment is real but non-recurring once the design program is locked.

GSM interacts with construction rather than acting as an independent cost driver. Two fabrics at 280 GSM can have substantially different production costs depending on whether that weight is achieved through a dense single-jersey or a lighter-gauge double-knit. When evaluating quotes, requesting a cost breakdown that separates raw material cost from knitting charge will reveal where the price sensitivity actually lies — and which element of the spec is driving margin pressure.

Knit Construction: How Complexity Moves Cost

Construction	Setup Overhead	Cost Direction vs Single Jersey	Common Applications
Single Jersey	Low — one needle bed, continuous run	Baseline	T-shirts, base layers, casual tops
Double Knit	Moderate — two needle beds, slower cycle	Higher — more yarn throughput and machine time	Structured garments, performance wear, ponte
Jacquard Knit	High — pattern programming + creel changes	Highest — fixed setup cost per pattern	Pattern-integrated fabrics, premium collections
Cable/Textured Knit	High — complex needle sequence per course	Higher — longer cycle, lower yield per hour	Knitwear, structured outerwear, fashion tops

Finishing Treatments: Each Process Adds Cost Independently

Two fabrics can leave the knitting machine as near-identical grey goods and arrive at final specification at meaningfully different prices. The gap is finishing, and the finishing costs stack. Each process step after knitting is a separate cost line: dye bath preparation, color correction, fixation, wash-off, heat setting, and any surface treatment applied before final inspection.

The baseline is reactive dyeing for solid colors: dye bath preparation, color matching to an approved lab dip, fixation, washing, and drying. This is the standard process for most custom-color knit orders. Functional finishes — anti-pill treatment, moisture-wicking application, antimicrobial coating — are each priced as additional process steps. Buyers comparing quotes across mills should confirm whether the finishing specification being quoted is identical; “dyed and finished” can represent substantially different cost structures depending on what treatments are included in the base price versus quoted as add-ons.

Mercerized cotton knit fabric illustrates the finishing cost principle clearly. Mercerization involves treating knitted grey goods under tension with a chemical solution to improve surface luster, dimensional stability, and dye uptake. The process adds measurable cost relative to a standard-finished cotton knit, depending on construction. For brands targeting premium product positioning or requiring specific sheen characteristics, it changes how the fabric is perceived at retail — but the decision to specify mercerization should be confirmed against whether the luster requirement is a genuine product specification or an aesthetic assumption that can be revisited at the development stage.

Brushed constructions — polar fleece, velour, and similar surface-treated fabrics — add a mechanical process step that raises surface fibers to create the finished pile. Brushing usually occurs during the finishing stage after dyeing, depending on construction and process route; the additional process time, weight variance risk, and post-treatment drying requirements can register as cost additions. Buyers sourcing brushed fabrics should request specifications that clearly state whether quoted weights are pre- or post-brushing, as this affects both cost comparison accuracy and end-product consistency across production lots.

Custom Dyeing and Special Effects: Where Costs Spike

Standard reactive dyeing in a single solid color is the cost baseline. Anything that introduces batch-level process complexity above that baseline — whether through dyeing technique, color variation, or surface effect — registers as a step-change in cost, not a marginal increment.

Custom color development requires a lab dip phase: the mill produces small dye trials for buyer approval before committing bulk production yardage. Each correction cycle adds lead time, and in some cases, incremental cost for dye formulation adjustment. Dark shades and highly saturated colors typically require higher dye concentrations, affecting both material cost and wash-off processing. Buyers working with tight launch timelines should build lab dip approval into their sourcing calendar rather than treating it as a variable. Multiple colors across a single collection multiply both the lab dip rounds and the per-color MOQ requirement.

Tie-dye fabric achieves its intentional color variation through resist or controlled dyeing methods applied at the fabric stage. Each roll may vary within an approved shade and effect tolerance, so buyers should not evaluate it by the same repeatability standard as solid reactive dyeing. Mineral-wash fabric also requires additional processing time to create its surface character. These effects are priced more by process control, sampling approval, and production handling than by raw material alone. For brands sourcing these effects, the cost becomes predictable once the approved sample, tolerance range, and bulk process are locked.

MOQ and Order Volume: The One Lever Buyers Can Actively Operate

Fiber type, construction, and finishing are largely fixed by product specification — changing them means changing the end product. MOQ is different. It’s a cost variable that sourcing teams can actively manage without touching the spec sheet.

Every production run carries fixed costs: machine setup, dye bath preparation, yarn lot sourcing, and quality inspection. Those fixed costs are distributed across the kilograms in the order — a smaller run means a higher fixed-cost share per unit. At Runtang Tex, the MOQ structure reflects this directly: stock fabrics are available from 25 kg, custom solid-color orders start at 300 kg per color, and general custom development runs from 1,000 kg. Each tier represents a different ratio of fixed production cost to order volume.

For brands managing cost without changing their product specification, the available moves are: consolidating colorways to hit per-color MOQs more efficiently; selecting from stock compositions rather than commissioning custom fiber blends; and aligning development timelines to minimize lab dip correction rounds. Our full range of knit fabrics includes stock items available from 25 kg — useful for development-stage sourcing or market testing before committing to custom production volumes. Specifications and MOQ terms are listed per category.

Runtang Tex MOQ Tiers at a Glance

Order Type	MOQ	Best For
Stock fabrics (available compositions & colors)	25 kg	Development sampling, market testing, small-run validation
Custom solid color	300 kg per color	Brand-color programs, seasonal colorways, repeat bulk orders
General custom development	1,000 kg	Custom fiber blends, non-stock constructions, and new style development

Frequently Asked Questions

What MOQ applies to custom-color knit fabric orders at Runtang Tex?

Custom solid-color orders start at 300 kg per color. General custom development — including non-standard compositions or constructions not available in stock — runs from 1,000 kg. Stock fabrics in available compositions and colors can be ordered from 25 kg, making them useful for development-stage sourcing or small-run testing before committing to custom production volumes. For orders spanning multiple colors, each color is counted separately against the per-color MOQ.

Does construction type affect the cost of knit fabric more than fiber choice?

Both matter, but they affect cost differently. Fiber choice determines raw material cost per kilogram of input — a direct, measurable variable. Construction determines production overhead: machine time, setup complexity, rejection rate, and finishing compatibility. For commodity-weight knit fabrics in standard fibers, raw material typically accounts for the larger share of the quoted price. For technically complex constructions such as jacquard or double knit, production overhead increases as a proportion of total cost, and that overhead is largely fixed, so it becomes more significant at lower order volumes.

Do sustainability certifications change fabric cost?

Certification does not always change the knitting or finishing process directly, but certified inputs, chain-of-custody documentation, transaction records, audits, and supplier qualification can affect the quoted price. Recycled polyester certified under the Global Recycled Standard (GRS) may price differently from virgin polyester depending on traceability requirements and current supply. Organic-certified cotton may also carry a raw-material premium over conventional cotton. For buyers with ESG sourcing mandates, the key is to confirm whether the quote includes certified yarn, documentation support, and claim-ready supply chain control from the development stage.

Runtang Tex manufactures knit fabrics across 20+ constructions from our production facility in Foshan, with an annual output of 20 million yards. Certifications available include Global Recycled Standard (GRS) and OEKO-TEX® Standard 100. Share your target spec and order volume to get a quote, or request a sample to begin development.