Supplier invoices in your accounting platform, after you approve them.
LinesFlow extracts supplier invoices, matches suppliers and ledger accounts, validates VAT and totals, and posts to Sage, Xero, or QuickBooks — only once you review every extracted value.
30 days free. No credit card required.
The review workspace
Your invoice beside its extracted fields
How it works
Three steps, with a human check in the middle.
Extraction is automated; posting is deliberate. That middle review is what keeps the right numbers in the right ledger.
Upload
Drop in PDFs, scans, Word docs, spreadsheets, or photos — one at a time or in bulk.
Review
Check the extracted supplier, date, totals, and line items against the document before anything moves.
Post
Send to your accounting platform once you approve — with a full audit trail of every decision.
Where it posts
Posts to the accounting platforms you already use.
Beyond generic OCR
Handles what generic document scanners get wrong.
Mixed VAT rates, credit notes, specialist-treatment checks, and a review step before anything reaches the ledger.
Mixed VAT rates
Line-level VAT rates are extracted and reconciled, so a single invoice with several rates posts correctly.
Credit notes
Credit notes and negative lines are handled deliberately, not silently netted into a positive total.
Specialist VAT treatments
Retention, reverse charge, and other specialist treatments are detected and held when the destination treatment has not been verified.
Review before the ledger
Nothing reaches your accounting platform until a person approves the extracted document.
Security & data handling
Your invoices, your books, your call.
Accounting connections are encrypted, documents are retained only as long as they are useful, and nothing is posted without your approval.
Encrypted accounting connections
OAuth access and refresh tokens are encrypted at rest, with safe rotation when they expire.
PDFs kept 7 days
Posted documents are retained for 7 days, then removed. Unposted drafts expire after 90 days.
Delete and export, your call
Export everything you hold in one ZIP, or erase your account and all related data at any time.
Nothing posts silently
Every posting is an explicit, auditable act — never a background side effect of an upload.
Product demo
See the review workflow before you connect accounting.
Follow a test invoice from upload through line validation, supplier and ledger matching, explicit approval, and a successful Sage posting.
Playing the demo loads it from YouTube, which may set cookies. Nothing is requested from YouTube until you press play.
Post your first invoice today — free.
Upload an invoice, review what was extracted, and post it to your accounting platform. 30 days free, no credit card required.
Built for businesses, sole traders, accountants, and bookkeepers doing business accounting.