Cotton Got Cheaper by Policy, Polyester Got Dearer by Crude

Two headlines, opposite directions

If you follow textile news at all, you have read two things this year that seem to contradict each other. Cotton yarn hit a multi-year high and squeezed everyone in the chain. Then cotton eased. Meanwhile poly-viscose quotes have not eased, and in some cases have firmed.

Both are true, and they are not in conflict, because cotton and poly-viscose are priced by two entirely separate chains that happen to end up in the same shirt. One moved because of a government decision. The other is moving because of crude oil. Understanding which lever is behind which fibre is the difference between reading a headline correctly and repricing a uniform program on the wrong assumption.

What actually happened on the cotton side

Cotton yarn ran up through the first months of 2026 on tight domestic supply and firm export demand, to the point where reporting described spinning margins as under real pressure.

Then a policy intervened. On 30 May 2026 the Ministry of Finance notified an exemption removing the entire basic customs duty and the Agriculture Infrastructure and Development Cess on imported cotton, running from 1 June 2026 through the end of October 2026, with the stated purpose of augmenting cotton availability for the Indian textile sector. Cheaper imported cotton pulled domestic prices down with it, and yarn prices followed.

That is the important part for a buyer: the cotton relief was not the market finding its own level. It was a temporary measure with an end date written into it. Reporting differs on whether the last day is the thirtieth or the thirty-first of October, so treat the end of October 2026 as the boundary and confirm the exact position at source if a contract depends on it.

What is happening on the polyester side

Poly-viscose has no equivalent policy lever behind it right now. Polyester staple fibre traces back through PTA and MEG to crude oil, and viscose has its own pulp-driven chain. Reporting through early August 2026 has the Indian polyester chain firming on crude-led feedstock costs, with viscose staple fibre also rising.

So the two fibres are not merely uncorrelated this year, they are moving in opposite directions for unrelated reasons. Nothing that happens to a cotton import duty touches the price of a polyester chip.

Why your PV quote does not follow a cotton headline

There is also a structural reason the connection is weaker than buyers expect. In poly-viscose, the blend is fixed at the yarn stage, before spinning. A 65/35 or 70/30 blend is decided when the fibres are blended, not when the cloth is woven, so a mill cannot quietly slide the ratio in response to a fibre price move without changing the yarn it buys, and therefore the specification you approved.

This is a good thing and it is worth understanding as protection rather than rigidity. It means the fabric you approved is the fabric you reorder. It also means the cost structure behind a PV quote is set upstream of the loom, which is exactly why a weaving mill cannot pass on a cotton market movement it never participated in.

The date that actually matters

The cotton duty exemption expires at the end of October 2026. Separately, the minimum support price for the 2026-27 cotton season was raised, which puts a floor under domestic cotton from the new crop. Neither of those is a forecast, they are dated facts, and together they mean the cotton relief now visible in the market has a defined shelf life.

For school and institutional programs the timing is awkward, because the end of October sits directly before the window in which many programs finalise the coming academic year. A cotton or poly-cotton specification quoted in September and confirmed in December is not being quoted and confirmed under the same conditions.

We are not predicting what cotton does in November. Nobody credible is. The planning point is narrower and safer: if the price you are working from depends on a temporary exemption, know that, and do not build a twelve-month budget on a five-month measure.

What a program should actually do

• Do not switch fibre on a price headline. Cotton, poly-cotton and poly-viscose behave differently in a laundry, and a fibre chosen for a market reason will still be judged on shrinkage, fastness and pilling two years later.
• Ask which side of the chain your quote sits on. A cotton or poly-cotton quote and a poly-viscose quote respond to completely different inputs, so they will not move together and should not be renegotiated together.
• Fix the specification first and the quantity second. A locked spec lets you take a price when it suits you. A moving spec means every quote is a fresh conversation.
• If a spec depends on cotton content, get the timing question answered explicitly: is this price predicated on the current import exemption, and what happens to it after October.
• Treat a validity window as information rather than pressure. In a market where one input is on a policy clock and another is on a crude clock, a short honest window is a supplier telling you what they actually know.

Where we stop

There are no price figures in this post, for cotton, for polyester or for our own fabric, and that is deliberate. Fibre prices move weekly, our fabric is quoted per order against shade, quantity and finish, and a number published on a web page in August is a liability by November.

The market direction described here is drawn from trade reporting dated to early August 2026, and the policy facts from the notification as reported at the end of May 2026. Trade press is not government data. If a commercial decision rests on any of it, verify the current position at source before you act on it.