
For most of this year, the value chain cap was something you could mention to a customer but not cite. It had been agreed, then adopted, then it sat waiting for publication. That wait ended on 21 September 2026, when the Voluntary Standard appeared in the Official Journal of the EU as Commission Delegated Regulation (EU) 2026/1560. It entered into force on 24 September.
If you run sustainability at a company with 1,000 employees or fewer, and your week goes on customer questionnaires, this is the most useful regulatory change of the year for you. There is now a published legal text setting out what a CSRD-reporting customer can require from you, and a free official format for answering it. This post covers what the regulation says, where its limits are, and how to use it in the next request that lands.
What was published, and what it is called
The regulation is the Voluntary Standard (based on VSME), the European Commission’s reporting standard for companies outside mandatory CSRD scope. It builds on EFRAG’s earlier VSME standard for smaller companies, which is why you will see the two names used interchangeably. Expect procurement portals to start quoting the legal name and the regulation number.
The standard does two jobs at once:
- It is a reporting framework you can use now. Any undertaking outside mandatory CSRD scope can report against it from 24 September 2026. It gives you a recognised structure for energy, emissions, workforce, policies and governance.
- It is the reference point for the value chain cap. The Omnibus I Directive, in force since 18 March 2026, limits what CSRD reporters can demand from smaller partners by reference to this standard. Until the standard was law, that limit pointed at a document still in draft. Now it points at a fixed text.
EFRAG has said it will release an updated digital template in November 2026, including improvements to its Excel to Inline XBRL converter. If your customers ask for machine-readable data, that is the format to watch.
What your customer can now require
The cap is narrow and precise, which is what makes it usable. As summarised by Linklaters from the published text, it works like this:
- Who it protects: value chain undertakings with an average of 1,000 employees or fewer in the preceding financial year.
- Who it restricts: companies in CSRD scope, meaning more than 1,000 employees and more than EUR 450m net turnover since the Omnibus, roughly 5,000 companies across the EU.
- What it restricts: requiring information beyond what the Voluntary Standard covers.
- What purpose it covers: only information gathered for the requester’s own CSRD reporting.
- When it bites: from financial years beginning on or after 1 January 2027.
That last date matters for timing. The standard is available to you today, while the cap applies to your customers’ FY2027 reporting cycle. Requests arriving this autumn for FY2026 data are outside it, though pointing to the regulation now still sets expectations for next year.
The difference between “require” and “ask”
The cap stops a CSRD reporter from requiring more. It does nothing to stop them asking. A customer can still send you a 200-question portal. What changes is the status of the questions beyond the standard: you are entitled to decline them for CSRD purposes.
We covered the buyer’s side of this in what the value chain cap lets companies still ask suppliers, written before publication. The substance has held; what has changed is that you can now cite it.
What the cap does not cover
This is where suppliers get caught out. The cap is tied to one purpose, and most of your inbox serves other purposes.
- Requests required by other laws. The cap does not restrict requests a customer needs to comply with other EU or national obligations. A CBAM importer asking for embedded emissions in the goods you ship them is working under a separate regulation, and the cap does not reach that request.
- Bank and insurer requests for their own processes. A lender’s credit review or an insurer’s renewal questionnaire is usually about their risk assessment. Those requests sit outside a cap built around a customer’s CSRD statement.
- Voluntary target programmes. If a customer’s SBTi supplier engagement target means they want your emissions and your reduction plan, that request is driven by their climate target. Our post on SBTi Net-Zero Standard V2 explains why those asks are about to get more demanding.
- Anything you choose to volunteer. The cap is a right to decline. Using it is always your commercial call.
How to use it in the next request
1. Check your headcount on the right basis
The test is average employees over the preceding financial year. If you sit close to 1,000, confirm the figure with HR and keep the working. A customer’s compliance team may ask for it.
2. Build your dataset on the Voluntary Standard
Maintain one dataset structured on the standard, with the evidence attached to each datapoint: the meter reading, the invoice, the policy document, the payroll extract. That is the dataset you can be required to provide, so it should be complete, current and ready to send the same day. Everything else becomes a mapping exercise from it.
3. Ask what each request is for
Log every incoming request with its sender and purpose. When the purpose is the customer’s CSRD reporting, the cap applies. When it is a tender, a loan, a CBAM declaration or a climate target, it does not, and you decide on commercial grounds. Asking the question politely often shrinks the request on its own.
4. Invoke it with a helpful tone
Something like:
“We average fewer than 1,000 employees, so for your CSRD reporting our disclosures follow the Voluntary Standard under Delegated Regulation (EU) 2026/1560. Our complete dataset on that basis is attached and answers most of your questionnaire. For the remaining items, could you let us know which you need for purposes other than CSRD reporting? We are happy to look at those.”
You have answered quickly, answered most of it, cited the law accurately and handed the question of the extra items back to the requester. Our guide to answering customer and lender ESG data requests covers what to do when a customer pushes past the cap anyway.
5. Put 1 January 2027 in the diary
Review your standard response in December so it is ready when customers start collecting FY2027 data. If EFRAG’s November template changes the file format your customers expect, that is the moment to switch.
One dataset, answered once
The cap rewards the supplier who has a Voluntary Standard dataset ready to send, and it does little for the one who has to assemble answers from spreadsheets each time. Horizon ESG for sustainability teams is built around exactly that: one evidenced dataset, mapped to the standard and to the questionnaire formats you actually receive. Nova, the built-in assistant, drafts answers from that dataset with each figure linked to its source, and nothing is sent until you approve it.
The same numbers will eventually meet your finance team’s figures, and they need to match. If your CFO is asking how sustainability data is controlled, our page for finance teams covers that side.
If questionnaires are eating your week, book a short demo and bring the longest one you have. We will show you how much of it one dataset answers.
Sources: Commission Delegated Regulation (EU) 2026/1560, published in the Official Journal on 21 September 2026; Linklaters, “EU CSRD: revised ESRS and voluntary reporting standard are published in the Official Journal”, 21 September 2026; XBRL International, 27 September 2026. Checked 29 September 2026.




