International tax authorities are rapidly shifting to real-time invoice validation. France, Poland, Croatia, Malaysia, and other are already here, with the EU's ViDA initiative (VAT in the Digital Age) set to standardize e-invoicing and digital reporting. An uncleared e-invoice invalidates the transaction, blocking revenue and flagging audits.
Your ONESOURCE investment is critical for accurate tax calculation and filing. However, e-invoicing creates a new compliance layer between determination and filing. This layer is often fragmented with multiple vendors and manual reconciliation, leading to a disconnected audit trail from transaction to return.
ONESOURCE Pagero E-Invoicing addresses this gap with a unique two-step model that protects your ERP from global e-invoicing complexities:
- Step 1: Send once. Integrate your ERP once with ONESOURCE Pagero.
- Step 2: Pagero routes everywhere. Leverage the ONESOURCE Pagero Network — an open, fully interoperable platform — to meet e-invoicing and e-reporting regulations across 80+ countries. Our network validates and converts documents into the required local formats and routes them to the appropriate government platforms. The 100+ platforms connect to Interoperability and not Governmental platform.
This results into one seamless flow. Determination calculates indirect tax→ Pagero E-Invoicing clears → Indirect Tax Compliance files. This system delivers a unified audit trail from transaction to return with zero ERP disruption. Customers report 50 to 60% cost reductions, month-end close times dropping from days to hours, and comprehensive audit-ready visibility.
The next step is to request a readiness assessment and map your ONESOURCE footprint to active and upcoming mandates, identify quick-win pilot markets, and build a phased roadmap.
Chapter One
E-invoicing mandates and your ONESOURCE framework
You've chosen ONESOURCE Determination and Indirect Tax Compliance to centralize tax logic and automate global returns. You know Thomson Reuters manages complexity at scale. Now, the compliance landscape has evolved, demanding real-time e-invoicing.
Three realities defining the urgency of an integrated e-invoicing strategy
1. E-invoicing mandates are here
By 2026, structured electronic invoicing or continuous transaction controls (CTCs) will impact a significant portion of your transaction volume
- France. B2B e-invoicing for large enterprises begins September 2026 — 8 months away
- Poland. KSeF mandatory for all domestic transactions; non-compliance means legally invalid invoices
- Croatia. CTC rollout complete by mid-2026 for B2B, B2G, and B2C
- EU-wide. ViDA (VAT in the Digital Age) will mandate intra-community e-invoicing and digital reporting requirements by 2030, with full harmonization of existing models by 2035
2. Data integrity and reconciliations are non-negotiable
Real-time government validation means no "cleanup at month-end." A rejected invoice blocks revenue and triggers audits. If e-invoices clear through one system and returns file through another, you face critical reconciliation challenges. ViDA will intensify this, requiring real-time alignment between transaction data, e-invoices, and VAT returns across EU borders.
The new challenge is that if your e-invoices are cleared through one system and your returns are filed through another, you're reconciling two versions of the same transaction. What the government recorded when you cleared the invoice must match what ONESOURCE Indirect Tax Compliance reports when you file your return.
Under ViDA, this reconciliation challenge becomes even more critical as digital reporting requirements will require real-time alignment between transaction data, e-invoices, and VAT returns across EU borders.
3. Tax engines and compliance systems are no longer sufficient
- ONESOURCE Determination answers, "What is the right tax rate?"
- ONESOURCE Indirect Tax Compliance answers, "What do I report and file?"
- Governments now care equally about, "How, when, and where did that tax appear in a compliant digital invoice cleared through our platform?"
- E-invoicing is the missing link. Without it integrated into your ONESOURCE stack, you're managing three separate processes that should be one continuous flow of calculate, clear, and file.
Chapter Two
How ONESOURCE Pagero E-invoicing extends your current Thomson Reuters investment
You've already proven that centralized control, global scalability, and effective integration are possible within your enterprise. ONESOURCE Pagero is the natural evolution of that strategy, leveraging your existing ONESOURCE footprint to address the e-invoicing challenge.
The ONESOURCE Pagero architecture: Decide, exchange, report.
ONESOURCE Pagero's two-step model eliminates repeated ERP mapping, ensuring that mandate changes in Poland or France are handled within the Pagero network layer, not your ERPs.
- For Determination + Pagero customers:
- Decide. ONESOURCE Determination calculates tax in your ERP
- Exchange. Your ERP sends one format to Pagero via a pre-built connector.
- Clear. Pagero validates, converts, and routes to KSeF (Poland), Chorus Pro (France), MyInvois (Malaysia), and 100+ platforms.
- Result. Tax-accurate invoices cleared in real time with a full audit trail.
- For Indirect Tax Compliance + Pagero customers:
- Exchange. Pagero clears e-invoices through government platforms as transactions happen.
- Report. ONESOURCE Indirect Tax Compliance uses this same cleared invoice data to prepare returns.
- Result. Automated reconciliation; what was cleared matches what was filed.
- For customers using all three:
- You achieve a complete, seamless chain. Determination calculates → Pagero clears → Indirect Tax Compliance files. One vendor, one data flow, one audit trail from transaction to return – fully future-proofed for ViDA's harmonized EU requirements.
ONESOURCE Pagero uses a two-step model that eliminates repeated ERP mapping:
| Step 1: You send once | Step 2: Pagero routes everywhere |
| One consistent format from SAP, Oracle, or other ERPs via pre-built connectors | Pagero validates, enriches, converts to local formats, and routes to 100+ platforms globally |
| Your IT builds one integration | Thomson Reuters maintains platform connections and absorbs format changes centrally |
Real ROI, proven at scale
Operating in 50+ countries, Jones Lang LaSalle (JLL) files 3,000 tax returns annually. After implementing ONESOURCE Indirect Tax Compliance and Pagero:
- A 60%+ reduction in manual workload
- Month-end close dropped from 3 days to <1 day
- Centralized visibility across all markets
India’s fifth-largest IT company, Tech Mahindra, has $6.5B revenue and adopted ONESOURCE Determination, Indirect Tax Compliance, and Pagero:
- A 50% cost reduction in e-invoicing and compliance
- Audit-ready data repository with unified visibility
- Seamless e-invoicing rollout in high-priority markets
Both reached the same conclusion — treating tax determination and e-invoicing as separate problems doubles the work and multiplies the risk.
Chapter Three
Why ONESOURCE Pagero stands apart from traditional e-invoicing solutions
Traditional e-invoicing vendors (mappers) face inherent scalability challenges
Many traditional e-invoicing and EDI vendors are mappers. They build hundreds of country-specific configurations and custom integrations:
- Your ERP format → their internal schema
- Their schema → each country’s XML or JSON format
- Variations for specific buyers, networks, or platforms
When two countries are in play, this methodology works if you’re willing to absorb the maintenance cost. But when 20, 30, 40, or 80 countries are involved, and each changes technical requirements multiple times per year, the model breaks.
The "per-country cost trap"
While initial costs may seem low, the true Total Cost of Ownership (TCO) for traditional vendors often doubles or triples year-one pricing over three to five years due to:
- Repeated mapping for schema and rule updates
- New integrations for each additional country, ERP, or trading partner
- Bespoke exceptions and professional services for troubleshooting
- Complexity scaling with every acquisition or new market
The true cost of fragmentation
Traditional point-to-point e-invoicing vendors may appear cost-effective initially, especially for local or regional operations. However, the hidden costs emerge as you scale:
Vendor management overhead. Coordinating multiple contracts, SLAs, and support teams across different regions creates administrative burden and increases the risk of gaps in coverage.
Integration complexity. Each new country or mandate often requires custom mapping work, consuming IT resources that could be deployed on strategic initiatives.
Manual reconciliation. When e-invoicing platforms operate separately from your tax determination and compliance systems, finance teams spend significant time reconciling data between systems to ensure what was cleared matches what was filed.
Risk exposure. Fragmented systems create multiple points of failure. When an invoice is rejected or a mandate changes, identifying the root cause across disconnected vendors becomes a time-consuming exercise.
Tech Mahindra and JLL both faced these challenges before consolidating to ONESOURCE Pagero. Their 50 to 60% cost reductions came not just from lower license fees, but from eliminating the hidden costs of managing complexity across multiple vendors.
Why ONESOURCE Pagero outperforms competitors
Competitors typically result in:
- Separate contracts and support. Leading to "finger-pointing" when issues arise between tax calculation and e-invoicing.
- Duplicate content management. Different teams tracking tax rules vs. e-invoicing format changes.
- Manual reconciliation. Between your tax engine's calculation and the e-invoicing platform's clearance.
ONESOURCE Pagero eliminates this duplication. The same Thomson Reuters Center of Excellence that updates Determination tax rules also maintains Pagero's 100+ platform connections. You get one vendor, one update cycle, and one audit trail. When ViDA rolls out, you'll receive one centralized update instead of coordinating 27 separate implementations.
| What matters most | ONESOURCE Pagero | Why competitors struggle |
| Total cost of ownership | Predictable subscription; updates included; reduced IT labor | Per-country fees + change orders + ongoing mapping costs |
| Global coverage | 100+ platforms, 80+ countries, 14M+ trading parties | Regional focus; "roadmap" promises; slow to add mandates |
| Scalability | Two-step model: single format in, Pagero handles conversions | Country-specific configs; every new mandate = new IT project |
| Vendor consolidation | One Thomson Reuters contract; one support team | 3-7 vendors (tax engine + multiple e-invoicing + filing) |
Chapter Four
Next steps
Book a personal intro to ONESOURCE Pagero
Learn how you can fulfill local e-invoicing and CTC compliance requirements across the world with ONESOURCE Pagero.
What you'll see:
- The two-step model and how it eliminates repeated ERP mapping
- Live mandate coverage, including France, Poland, Croatia, Malaysia, UAE, and Singapore
- How ONESOURCE Pagero integrates with your existing Determination and Indirect Tax Compliance workflows
- How ONESOURCE Pagero prepares you for ViDA's EU-wide harmonization
- Comparisons TCO vs. your current multi-vendor approach
One decision, one vendor, one framework
You've already chosen Thomson Reuters to manage global indirect tax complexity. Extend that proven framework to e-invoicing with confidence.
- Same vendor, same governance, same updates
- One global network of 100+ platforms, 80+ countries
- Proven results with customers reporting 50 to 60% cost and workload reductions
- Seamless integration of Determination → Pagero → Indirect Tax Compliance
Take the next step and get started today.
