Supplier Information Questionnaire

What is an SIQ?

A Supplier Information Questionnaire (SIQ) collects structured facts about a vendor — ownership, certifications, insurance, capacity, ESG data — as part of supplier onboarding or qualification. SIQs are factual rather than persuasive: accuracy and consistency with prior submissions matter most.

When SIQs are used

Procurement and supplier-management teams issue SIQs when registering vendors into their systems, qualifying suppliers for categories, or refreshing supplier master data — often through procurement platforms on recurring cycles.

What a typical SIQ contains

  1. 01Company identity, registration, and ownership
  2. 02Financial information and references
  3. 03Certifications, licenses, and insurance evidence
  4. 04Capacity, locations, and capabilities
  5. 05Diversity, sustainability, and ESG data
  6. 06Banking and compliance declarations

How to respond to an SIQ

Treat the SIQ as data entry with legal weight. There is no persuasion to perform — the buyer wants correct, current, verifiable facts in their format, and errors propagate: a wrong registration number or expired certificate lodges in the buyer's supplier master and resurfaces at the worst moment (payment, audit, renewal). The response discipline is source-of-truth management: one maintained record of corporate facts, certificates with expiry tracking, and insurance documents refreshed before they lapse, so every SIQ draws from current data rather than whatever the last submission said.

Consistency across platforms is the hidden requirement. Suppliers now answer SIQs through many procurement portals, each caching your answers independently. Divergence between them — different revenue figures, headcounts, or certification claims — reads as unreliability when buyers cross-check, and updating each portal by memory guarantees divergence. Anchor every submission to the same maintained corpus and the portals converge on one truth automatically.

Use the recurring burden as the business case for systematization. SIQs, PQQs, and DDQs overlap heavily in their factual demands; the same evidence pack — kept current once — services all three. Generation-plus-citation workflows fit naturally: draft the questionnaire from the corpus, have the responsible owner verify flagged items (anything financial, legal, or newly changed), and submit. The measure of a good SIQ process is boredom: no hunting, no surprises, no expired attachments.

SIQ vs the other solicitation types

TypePurposeCommitmentTypical outcome
SIQRegister and qualify supplier facts into buyer systemsDeclarations relied upon for onboarding and complianceSupplier record created/refreshed; gates category eligibility
RFPCompare competing solution approaches and pricesProposals are offers; award forms a contractEvaluation → shortlist/discussions → award
RFQObtain comparable prices for a specified purchaseQuotes are typically binding offers for the validity periodComparison → award, often lowest responsive
RFISurvey the market and shape a future procurementNon-binding for both sidesShortlists, requirement shaping → often an RFP/ITT follows
ITTAward a defined scope through auditable competitionTenders are binding offers; strict process law appliesRubric scoring → award with standstill/feedback
DDQAssess counterparty risk before/while doing businessDisclosures are relied upon; accuracy carries liabilityRisk review → onboarding conditions or approval; recurs on cycle
PQQShortlist capable suppliers before tender evaluationDeclarations binding; misstatements risk exclusionPass → invited to tender; scored ranking may cap invitees
GrantAward non-repayable funds to advance program goalsAward creates obligations: performance + reportingPanel review → award with terms and reporting cycle

SIQ — common questions

SIQ vs PQQ — what's the difference?

An SIQ registers facts into a buyer's supplier systems; a PQQ scores those facts to shortlist who may bid a specific opportunity. Many programs use one to feed the other.

Why do SIQs feel endless?

Each buyer's platform re-collects overlapping data independently. The fix is on your side: one maintained corporate-facts corpus that every submission draws from.

What causes SIQ problems later?

Stale data — expired insurance certificates, outdated certifications, changed banking details — surfacing during payment or audit. Expiry tracking on evidence documents prevents most of it.

Related reading

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