TP/OS
Kraków, Poland
What it is
TP/OS is web-based transfer pricing software from ArmsLength AI for advisory firms and multinational in-house tax teams. It organizes source facts and reusable templates to support drafting and annual updates to transfer pricing documentation. The system produces Local Files and Master Files in localized formats shaped around the customer’s chosen structure. Its assistant reads source files, fills supported placeholders, and flags missing or conflicting information for review. Teams can request details from colleagues, track progress, and review documents before sharing. TP/OS exports editable Word files in a customer’s house style. A guided trial uses a Local File prepared the prior year to show the output and next-year update. Pricing is on request, with Base, Custom, and Turnkey options. Setup depends on each customer’s templates and documentation needs, and ArmsLength AI asks customers to confirm country coverage and outputs with its team. The company says project data is stored and processed in the EU, inputs are not used to train foundation models, and its security controls are ISO/IEC 27001 certified.
For and against
For
- Creates Local Files and Master Files in localized formats
- Flags omissions and contradictions for review
- Tracks colleague requests and document progress
- Exports editable Word files in a house style
- Offers a guided trial using a prior-year Local File
Against
- Pricing is available only on request
- Setup depends on customer templates and documentation needs
- Customers need to confirm country scope and outputs with the team
The verdict
TP/OS brings source organization, drafting support, review workflows, and Word export into a transfer pricing documentation process. Its trial offers a way to review a prior-year file and its next-year update, while pricing and implementation details require discussion with ArmsLength AI.
Who it suits
It suits transfer pricing advisory firms and multinational in-house tax teams that need to organize documentation across countries. Teams should be prepared to align setup with their templates, country scope, and desired outputs.
Plans and prices
TP/OS Documentation
Country scope and outputs confirmed during setup · guided onboarding discussed with provider
Read 15 Oct 2026 · armslength.ai
Base
Few countries, standard files, best-practice starting point · Ready data model and fields · Ready documentation templates · Role-based review flow
Read 4 Oct 2026 · armslength.ai
Custom
Multiple countries, existing files, tailored setup needed · Includes all Base features · Custom data model extensions · Custom templates and report structure
Read 4 Oct 2026 · armslength.ai
Turnkey
High complexity across countries, done-for-you implementation · Includes all Custom features · Complete data setup done by our team · Country-by-country template setup
Read 4 Oct 2026 · armslength.ai
On the record
- Access and SSO
- The security page states that SSO/SAML is available via Microsoft Entra ID and Google, with role-based access controls.armslength.ai · read 4 Oct 2026
- Access controls
- Internal access uses least-privilege and role-based controls, with support access limited to necessary scope.armslength.ai · read 15 Oct 2026
- AI drafting
- AI helps draft documentation sections for human review.armslength.ai · read 15 Oct 2026
- AI extraction
- AI helps extract facts from supplied source material.armslength.ai · read 15 Oct 2026
- AI training policy
- Customer inputs are stated not to be used to train foundation models.armslength.ai · read 15 Oct 2026
- AI workflow
- The assistant reads source files, fills supported placeholders, and flags omissions and contradictions for review.armslength.ai · read 4 Oct 2026
- Annual roll-forward
- Teams can reuse mappings and templates for the next annual documentation update while reviewing changed facts.armslength.ai · read 15 Oct 2026
- API capabilities
- The API exposes search, paragraph retrieval and LLM-oriented context-pack endpoints.armslength.ai · read 15 Oct 2026
- API free-tier limits
- The documented free tier allows 60 search requests, 30 paragraph requests and 20 context-pack requests per minute.armslength.ai · read 15 Oct 2026
- API licence
- The OpenAPI specification labels the public API licence proprietary and subject to ArmsLength AI terms.armslength.ai · read 15 Oct 2026
- Audit-log retention
- Raw audit logs are retained for 30 days and then anonymised, with CSV or JSON exports available on request.armslength.ai · read 15 Oct 2026
- Client data and AI
- The company says customer inputs are used to generate that customer’s outputs and are not used to train foundation models.armslength.ai · read 4 Oct 2026
- Collaboration workflow
- The interface shows entity projects, review checkpoints and requests for missing inputs from colleagues.armslength.ai · read 15 Oct 2026
- Company
- ArmsLength AI describes itself as a transfer pricing software company built by practitioners.armslength.ai · read 4 Oct 2026
- Company benchmark history
- The launch post says ArmsLength AI had analyzed more than 1,000,000 companies before introducing TP/OS.linkedin.com · read 15 Oct 2026
- Company legal registration
- BizRaport records ArmsLength AI spółka z ograniczoną odpowiedzialnością under KRS 0001130933.bizraport.pl · read 15 Oct 2026
- Company registration date
- The Polish company register entry date is 7 October 2024.bizraport.pl · read 15 Oct 2026
- Encryption
- Data is protected with encryption in transit and at rest.armslength.ai · read 15 Oct 2026
