EU Funding & Tenders Portal tender attachments document upload
Official requirementAdd each required file. Conditional files are marked optional.
Requirement verified August 21, 2026 · Source: European Commission — Funding & Tenders Portal support FAQ ↗
Upload your files
Documents this application needs
Tender document
PDF · ≤50000 KBSupporting tender document
PDF · ≤50000 KBAdditional tender document
Only if it applies to youPDF · ≤50000 KB0/2 files ready
Sources disagree on this
per-file size ceiling
The portal FAQ states attachments must be under 50 MB; this wording was captured from the FAQ text as archived by a tender aggregation service rather than read live. Third-party Horizon guides separately cite 10–20 MB per proposal part.
How we handle it: Keep every attachment comfortably below 20 MB where possible and treat 49,999,999 bytes as the hard per-file boundary; confirm the System Requirements page for the specific procedure before submitting.