Inostos is in development — register your interest for early access
Most AP tools show you what you spent. Inostos shows you what to do about it.
Inostos will bring the whole buying process — request to payment — under one roof, then use that data to find the money leaking out of it: duplicate suppliers, creeping categories, invoices drifting above tolerance, and contracts about to auto-renew.
Spend intelligence, built in
Built for businesses that have no real visibility or control of their spend today — and don't want blunt automation. They want the system to tell them where the problems are, and what to do about them.
Duplicate and near-duplicate spend
Inostos will flag the same thing bought twice, the same supplier set up under two different names, and overlapping subscriptions nobody remembers signing up to.
Category and supplier trend detection
Inostos will surface where spend is rising, which suppliers are taking a growing share of the budget, and where consolidating suppliers would cut cost.
Off-PO and above-tolerance spend
Invoices with no matching commitment, and spend drifting above approved values, will be highlighted automatically — not buried in a report nobody reads.
Auto-renewal detection
SignatureInostos will watch the payment stream for contracts about to renew themselves, before they do.
How auto-renewal detection works ↓Proposed actions, not just charts
The difference from every dashboard: Inostos won't stop at a chart. It will propose the next step — consolidate these two suppliers, review this renewal, challenge this price rise.
Auto-renewal detection — before the contract renews itself
Inostos will watch the payment stream for the signatures of auto-renewing contracts — recurring invoices, fixed monthly suppliers, commitments that repeat on a cycle — and flag them before they silently renew.
Auto-renewals are where SMEs lose the most money, because nobody is watching the contract that renews itself. Inostos spots them from the spend, where they're actually visible.
A standalone AP tool has no contract product to hand off to. A standalone contract tool has no payment data to detect from. Because Hidbrain builds both, Inostos will do what neither can do alone.
From the spend to a managed renewal
Works with Timemy
Detected contracts will flow into Timemy — Hidbrain's contract-renewal platform — for full clause tracking, notice-period alerts and renewal management. Inostos finds the contracts in the spend; Timemy manages them from there. Part of the Hidbrain suite.
Every insight shows its receipts
Finance teams won't trust an assertion that says “you could save £X” without proof — and one confident, wrong number in front of a CFO ends the deal. So every insight Inostos surfaces will link back to the specific invoices, purchase orders and payments it's derived from, with the underlying numbers shown alongside it.
Insight with receipts. Never a black-box guess.
Traced to source
Every figure links back to the invoices, POs and payments it was computed from.
Numbers shown, not asserted
The underlying data is visible and drill-down-able — not hidden behind a confident sentence.
Nothing generated
The intelligence layer computes from real records. It does not generate a spend claim you can't check.
The intelligence only works because Inostos runs the whole buying process
None of the above works from a partial picture. That's why Inostos takes the entire buying process under one roof — request, PO, approval, invoice and payment — so the data feeding the intelligence layer is complete, not patched together from a system that only sees half the story.
AI extraction
PDF, XML and PEPPOL
Mobile approvals
Approve from any device
Full audit trail
Every action attributed
ERP-native sync
Deep two-way integration
Built for structured e-invoicing — not just PDFs
Inostos is being built to receive and process structured e-invoices natively — including PEPPOL BIS 3.0, UBL 2.1 and Factur-X — alongside traditional PDFs and scanned documents.
Mandates hit the receiving side first. Businesses must be able to accept structured e-invoices before they are required to issue them. Most SME AP tools only parse PDFs. Inostos is being built for what regulators are already mandating across Europe.
European e-invoicing mandate timeline
Germany
B2B e-invoice receipt obligation
Belgium
B2B structured e-invoicing
Poland
KSeF structured invoicing
France
Factur-X / PPF mandate
UK
MTD ITSA e-invoicing
Dates subject to regulatory update. Source: European Commission, HMRC.
PO approvals and invoice matching — in one workflow
Most AP tools begin when the invoice arrives. Inostos will start at the purchase order — so every invoice will be validated against an approved commitment before it is ever paid.
Department raises a PO
Any team member submits a purchase request with supplier, items and estimated value. No emails, no spreadsheets.
Auto-routed by approval matrix
Inostos will check the PO value against your approval matrix and route instantly to the correct approver — line manager, department head or CFO.
Approver notified on mobile
One-tap approve or reject from any device. Delegation rules will engage automatically if an approver is unavailable.
Invoice auto-matched to PO
When the invoice arrives — by email, upload or e-invoice — Inostos will match it to the approved PO on vendor, amount and line items. Discrepancies will be flagged immediately.
Payment file generated
Matched invoices within tolerance are queued in the payment proposal. Inostos generates the payment file and posts to your accounting system — it does not execute the payment.
Example approval matrix
Thresholds, approvers and delegation rules will be fully configurable per department.
What a complete procure-to-pay cycle looks like
- Raise a PO digitally, with line items and budget coding
- Auto-route for approval based on value or category
- Record goods or services received (GRN)
- Three-way match: PO × GRN × invoice
- Capture structured e-invoices (PEPPOL / UBL / Factur-X)
- Detect duplicate and anomalous invoices before posting
- Supplier fraud controls on bank detail changes
- Build a payment proposal and export to your bank
- Post approved invoices natively to your ERP
The AP lifecycle, end to end
Every invoice will follow the same structured journey — from purchase order to payment file.
Raise PO
Dept submits purchase request
Route and approve
Matrix-based auto-routing
Capture invoice
Email, upload or e-invoice
AI extract
Claude reads every field
PO match
Auto-match to approved PO
Payment file and sync
Export to bank, post to ERP
Note: Inostos will generate and export payment files — it does not operate a payment rail or execute bank transfers.
Everything AP. One platform.
Inostos will cover the complete accounts payable lifecycle — from purchase order to payment file — for finance teams managing mid-market complexity.
AI Invoice Processing
Inostos will read PDFs, scanned documents and structured e-invoices, extracting supplier, amounts, VAT, IBAN and line items automatically. No templates, no manual keying.
PO Approvals and Auto-Matching
Departments will raise purchase orders digitally. Inostos will route each PO to the correct approver based on value, then match the arriving invoice to the approved commitment.
Expense Management
Employees will submit receipts on mobile. Finance teams will review, categorise and export to payroll — with spend-policy checks applied before claims reach an approver.
Email Inbox Sync
Connect your AP inbox and Inostos will scan every email automatically, pulling invoice attachments — PDFs, XML and PEPPOL formats — into the workflow.
Goods Receipt and Three-Way Match
Record delivery of goods or services against an open PO. Inostos will perform a three-way match — PO, goods received note and invoice — within configurable tolerances.
Supplier Portal and Onboarding
Suppliers will submit invoices and bank details through a controlled portal. Details captured under controls, not by email — closing a common invoice-redirection fraud vector.
Supplier Statement Reconciliation
Upload or receive a supplier statement and Inostos will reconcile it against posted invoices to surface missing documents, duplicates and discrepancies.
Duplicate Invoice Detection
Fuzzy matching across supplier, amount, date and invoice number will flag potential duplicates before posting — preventing double payment before it happens.
Payment Proposal and Export
Build a payment run from approved invoices and export a payment file in your bank's required format. Inostos will not execute payments — it hands off cleanly to your bank.
Real-time AP Dashboard
Live visibility across the full AP cycle: POs awaiting approval, invoices under review, overdue liabilities and upcoming payment runs — all in one place.
Audit Trail and Compliance
Every action will be timestamped and attributed. Designed for audit and SOX-aligned controls — rejection reasons, approver names and payment references stored permanently.
Supplier fraud controls, built in as standard
APP fraud reimbursement rules leave mid-market finance teams exposed. Invoice redirection fraud almost always arrives as a legitimate-looking email from a real supplier domain — and no amount of staff awareness training eliminates the risk entirely.
Inostos will include supplier fraud controls as a standard capability across the platform, not a bolt-on.
Bank detail change detection
Every change to a supplier's bank details will be flagged, logged and held for secondary approval before inclusion in any payment run. The most common vector for invoice redirection fraud.
First-payment hold
New or recently amended supplier bank details are automatically held for a configurable period before they appear in a payment proposal.
Confirmation of Payee
Optional integration with UK Confirmation of Payee services to verify that payee name and account details match before a payment file is generated.
Invoice and supplier anomaly signals
Unusual amounts, near-duplicate vendor names, mismatched IBANs against invoice history and other anomaly signals will be surfaced before posting.
Security you can put in front of your auditors
Inostos is being built for finance teams that operate under real controls — not as an afterthought. Every architectural decision is made with audit, segregation of duties and data protection in mind.
EU data residency
All data is stored on certified cloud infrastructure within the European Union. Data does not leave EU jurisdiction during normal operation.
Encryption at rest and in transit
AES-256 encryption at rest. TLS 1.2+ in transit with HSTS enforced. Sensitive credentials stored with separate encryption keys.
Row-level data isolation
Database access is enforced at the row level. One organisation's data is architecturally isolated from every other — not just by application logic.
Immutable audit trail
Every approval, status change, payment export and supplier edit is timestamped and attributed. Audit records cannot be edited or deleted by users.
Segregation of duties
Designed so that the person who approves an invoice cannot also initiate the payment export. Controls are enforced by the platform, not by policy alone.
No payment execution
Inostos generates payment files and exports them to your bank — it does not hold funds or execute transfers. The payment instruction remains under your control.
Designed to get you live quickly
No lengthy implementations. No consultants required for the core setup.
Connect your sources
Link your AP email inbox, upload PDFs or XML, or receive PEPPOL e-invoices directly. Inostos will handle every channel from day one.
AI will extract and validate
Claude AI will read every document, extract all fields and flag discrepancies against your PO register — without manual review of clean invoices.
Approve and sync
Route for approval on mobile, then post approved invoices directly to your accounting system or ERP. Export a payment file when ready.
Connects to your stack
Native two-way sync for cloud accounting; deep field-level integration for enterprise ERPs.
Cloud accounting — native sync
Xero
2-way sync — supplier master, invoices, payments
QuickBooks
2-way sync — suppliers, bills, GL coding
Enterprise ERP — deep field-level integration
Built by a team with two decades of UK Sage X3 implementation experience. The ERP integration goes beyond basic invoice posting — it covers supplier master sync, PO commitment writeback, analytical dimension mapping and payment status. Learn more about the Sage X3 integration →
Sage X3
- Supplier master sync
- PO commitment writeback
- Invoice posting to GL
- Analytical dimension mapping
- Payment status writeback
NetSuite
- Vendor master sync
- Purchase order sync
- Bill posting
- Subsidiary and department coding
- Payment reconciliation
MS Business Central
- Vendor master sync
- Purchase order integration
- Invoice posting
- Dimension coding
- Payment journal export
Need to discuss your ERP requirements? Talk to us about your stack
Expenses that will run themselves
Automate and track employee business spending, travel claims and corporate card usage. Eliminate manual paperwork by standardising expense policies, routing claims through digital approvals, and syncing data directly into your accounting and project billing systems.
Receipt capture on mobile
Snap a photo — OCR will extract merchant, amount, date and category automatically.
Policy enforcement built in
Configurable spend limits and per-diem rates will flag out-of-policy claims before they reach approvers.
Mileage and travel claims
Mileage reimbursements calculated using map distance. Itineraries attachable to travel claims.
Corporate card reconciliation
Card transactions matched to receipts automatically. Missing receipt reminders sent without finance team involvement.
Project and cost-centre coding
Tag expenses to projects or cost centres. Coded data synced directly to your accounting system for billing.
Expense claim journey
Available as an optional capability
The Expenses capability shares the same approval workflows, audit trail and ERP sync as the core AP platform. Fully integrated, not a separate product.
Register your interest →Priced for the whole team, not just the few who can afford seats
Full pricing will be announced at launch. Two principles are already settled, and shape everything we're building:
Priced for everyone to use, not per seat
Spend control only works when the whole team requests through the system. So the plan is for Inostos not to charge per user.
Built to be accessible to smaller businesses, not just enterprise
Inostos is being built to be reachable for companies that today's incumbents price out of proper spend control.
Inostos is launching soon
Register now to help shape the roadmap and secure one of the first pilot places. Early registrants will receive direct access to the product team and priority onboarding when we launch.
Building the AP platform your finance team deserves
Inostos is in development. Register now to follow progress, influence the roadmap and get first access when we launch.
Register your interest