Expanded Expense Attachment Formats
September 21st, 2026
V4 public API expense attachments now support PDF, plain text, JPEG, PNG, GIF, Excel, Word,
CSV, RTF, TIFF, BMP, Apple Pages, Apple Numbers, and PowerPoint files for bills, charges, and
reimbursements.
Other formats require an allowed filename
extension and either a matching content type or application/octet-stream. Files detected as HTML
remain rejected regardless of their filename or declared content type; macro-specific Office formats
remain unsupported.