The 2026–2030 roadmap for Bulgarian companies that want to trade across Europe without rebuilding their finance processes every year.
“The future of finance is not faster reporting after the transaction. It is cleaner data from the moment the transaction begins.”
Many companies still treat tax reporting, electronic invoicing, and accounting compliance as separate projects.
One team handles SAF-T. Another team manages invoices. A third team works on VAT. IT becomes involved only when a deadline is close. Meanwhile, sales, purchasing, warehouse, and finance continue using disconnected processes, spreadsheets, PDFs, and manual corrections.
This approach is becoming expensive.
Across Europe, financial compliance is moving toward structured, connected, and increasingly digital transaction data. This affects how companies create invoices, process payments, manage VAT, maintain customer and supplier records, and prove what happened in a transaction.
For Bulgarian businesses, three developments matter most:
- SAF-T is already changing the way accounting data must be prepared and reported.
- E-invoicing mandates are expanding across European markets.
- ViDA will introduce EU digital reporting requirements for cross-border B2B transactions from 2030.
These are not isolated requirements.
They are different stages of the same shift: from documents that look correct to data that must be correct.
The Problem With Traditional Finance Processes
For years, many businesses have been able to operate with fragmented financial processes.
Sales may create an invoice in one system. Warehouse teams record delivery in another. Finance posts the accounting entry later. VAT codes are maintained in spreadsheets. Supplier invoices arrive through email. Payment matching is manual. Customer records exist in several versions.
The result is familiar:
- Duplicate customer and supplier records.
- Missing VAT numbers.
- Inconsistent product descriptions.
- Incorrect tax codes.
- Incomplete delivery references.
- Manual credit-note corrections.
- Payment delays.
- Repeated invoice disputes.
- Difficult reconciliations.
- Last-minute compliance work.
- Management reports that cannot be fully trusted.
A PDF invoice may still look professional. But when data must be exchanged, validated, reconciled, or reported automatically, these weaknesses become visible quickly.
Structured compliance does not create weak data. It exposes weak data that already exists.
SAF-T: More Than a Tax File
SAF-T means Standard Audit File for Tax.
It is a structured electronic file containing accounting, tax, master-data, and transaction information. It is designed to help tax authorities review data in a consistent and standardized way.
In Bulgaria, SAF-T is being introduced in stages. The National Revenue Agency has published the structure, submission requirements, technical documentation, and updated schema for SAF-T reporting.
The current SAF-T XML schema version 1.0.2 applies from 1 April 2026. NRA SAF-T information page
The specific filing obligation depends on the company’s legal scope, notification status, reporting period, and category. Businesses should confirm their exact duties with their accountant, tax adviser, or the NRA.
But every company should understand the broader lesson:
SAF-T makes finance-data quality a compliance issue.
A company must be able to connect and explain:
- Customer and supplier master data.
- VAT registrations and tax treatment.
- Chart-of-account mappings.
- Sales and purchase documents.
- Payments and adjustments.
- Inventory and fixed-asset data where relevant.
- Document numbering.
- Credit notes and corrections.
- Accounting entries.
- Audit trails.
- Source documents and supporting evidence.
SAF-T is not something you create at the end of the month from a few exported spreadsheets. It depends on how well the company manages transactions throughout the month.
E-Invoicing: A PDF Is Not Always an E-Invoice
A common misunderstanding is that an invoice sent by email is automatically an electronic invoice.
It is not.
A PDF invoice is digital in the sense that it is a file. But it is usually not a structured, machine-readable invoice that another system can automatically validate and process.
A true e-invoice contains structured data. It allows software to identify information such as:
- Supplier and buyer.
- VAT registration number.
- Invoice number.
- Date and due date.
- Invoice lines.
- Product or service details.
- Quantity and unit price.
- VAT category and rate.
- Total amount.
- Payment reference.
- Purchase-order reference.
- Delivery reference.
- Credit-note relationship.
This enables automated processing, validation, reconciliation, and reporting.
The document becomes part of a digital business process instead of an attachment waiting for manual entry.
Bulgaria: Structured E-Invoicing Already Matters in Public Procurement
Bulgaria does not currently have a general domestic B2B structured e-invoicing mandate for every private business.
However, e-invoicing is already relevant in public procurement.
Under Article 115a of Bulgaria’s Public Procurement Act, contracting authorities must accept and process electronic invoices in public-procurement payments when they meet the applicable requirements. The rule has applied since 1 November 2019. Public Procurement Act, Article 115a
For companies working with public authorities, this means structured invoice readiness is already a practical requirement.
For companies not currently supplying the public sector, it is still a useful signal of where the market is moving.
The future standard is structured financial data—not manually interpreted documents.
Europe Is Not Waiting for One Common Local Deadline
Bulgarian businesses trading across Europe cannot wait for a single national B2B e-invoicing mandate before preparing.
Their customers, suppliers, VAT registrations, branches, and foreign operations may already be affected by local rules in other countries.
Belgium: Structured B2B E-Invoicing Since January 2026
Belgium introduced mandatory structured e-invoicing for domestic B2B transactions on 1 January 2026.
Belgian VAT-liable businesses must exchange structured electronic invoices with one another for in-scope domestic transactions. A PDF invoice sent by email is not sufficient as the sole compliant invoice format. European Commission: eInvoicing in Belgium
This matters for Bulgarian companies with Belgian entities, VAT establishments, domestic Belgian transactions, or local customers and suppliers.
Germany: Receiving Structured E-Invoices Since January 2025
Germany began its domestic B2B e-invoicing transition on 1 January 2025.
Businesses in scope must be able to receive structured e-invoices. The obligation to issue compliant structured e-invoices is phased:
- From 1 January 2027, companies with prior-year turnover above €800,000 must generally issue structured e-invoices for in-scope domestic B2B transactions.
- From 1 January 2028, the broader domestic B2B issuing obligation applies.
The transition period should not create false confidence. If your business works with German partners, receiving and processing structured invoices is already part of normal operations.
France: Major Changes Start on 1 September 2026
France begins its phased e-invoicing reform on 1 September 2026.
From that date:
- Large enterprises and intermediate-sized enterprises must begin issuing e-invoices.
- All companies in scope must be able to receive e-invoices.
- SMEs and micro-enterprises begin issuing e-invoices from 1 September 2027.
France also requires companies to exchange invoices and reporting data through an approved platform or compatible solution. French government e-invoicing guidance
Poland: KSeF Is Reshaping Invoicing in 2026
Poland began its mandatory KSeF e-invoicing rollout in 2026.
The first phase started on 1 February 2026 for the largest taxpayers. The next phase began on 1 April 2026 for most other businesses, while certain smaller taxpayers have a later timeline. European Commission: eInvoicing in Poland
For companies trading with Poland, this changes how invoices are created, submitted, received, validated, and archived.
ViDA: The EU’s Cross-Border Digital Reporting Future
The largest long-term change is the EU’s VAT in the Digital Age, or ViDA, package.
ViDA was adopted on 11 March 2025 and published in the Official Journal on 25 March 2025. It creates a phased EU framework for modernizing VAT reporting and e-invoicing. European Commission: ViDA
The most important dates for cross-border businesses are:
| Date | What it means |
|---|---|
| 14 April 2025 | ViDA entered into force. Member States may introduce mandatory e-invoicing under specific conditions. |
| 1 July 2030 | New EU digital reporting requirements begin for cross-border B2B transactions, based on e-invoicing. |
| 1 January 2035 | Member States with domestic digital real-time transaction-reporting obligations must align with the EU model and standards. |
From 2030, cross-border B2B trade in the EU will move further toward near-real-time digital reporting based on structured e-invoicing.
This does not mean every company needs to redesign its processes in 2030.
It means companies should build systems now that can adapt to changing formats, validation rules, reporting requirements, and partner connections.
A flexible ERP is cheaper than a rushed compliance rebuild.
The Transaction Chain Must Stay Connected
The strongest finance processes connect the full transaction chain:
Customer or supplier → order → delivery or goods receipt → invoice → VAT treatment → payment → accounting entry → reporting and audit trail.
When these links are missing, companies create risk.
For example, a supplier invoice may be posted without a purchase-order reference. A sales invoice may be created without a confirmed delivery. A credit note may not link back to the original invoice. A payment may be matched manually without a clear reference. A VAT treatment may be applied differently by sales and finance.
These problems are manageable when there are only a few transactions.
They become expensive when a business has thousands of invoices, multiple countries, several VAT rules, different currencies, warehouses, sales channels, and suppliers.
Structured reporting makes transaction consistency a daily requirement, not a month-end repair task.
The Master Data Problem
Most compliance problems begin with weak master data.
A company may have several entries for the same customer. One has an old address, another has an outdated VAT number, and a third has different payment terms.
A supplier may be registered under slightly different names. Product categories may be inconsistent. VAT rules may be applied manually. Units of measure may vary between sales, warehouse, and accounting systems.
When data is fragmented, automation becomes dangerous.
A system cannot reliably validate an invoice if the reference data is unreliable.
Companies should review:
- Legal entity names.
- VAT numbers.
- Tax residency.
- Billing and delivery addresses.
- Payment terms.
- Currency.
- Bank details.
- Product classifications.
- VAT categories.
- Customer and supplier status.
- Chart-of-account mappings.
- Cost centers and projects.
- Document numbering logic.
A clean master-data foundation is one of the best investments a company can make before SAF-T, e-invoicing, or ViDA pressure increases.
What Companies Must Have
Every business should establish a basic compliance foundation.
This includes:
- Centralized customer and supplier records.
- Correct VAT and tax logic.
- Consistent document numbering.
- Clear invoice, credit-note, and correction procedures.
- Links between orders, deliveries, invoices, and payments.
- Audit trails for creation, approval, change, and cancellation.
- Secure document retention and retrieval.
- Structured data export capability.
- Role-based permissions.
- Reliable accounting mappings.
- Clear ownership of finance data.
These are not advanced features.
They are the minimum conditions for reliable digital compliance.
What Companies Should Add Next
Once the foundation is stable, businesses should improve operational control.
Useful capabilities include:
- Three-way matching between purchase orders, goods receipts, and supplier invoices.
- Automated payment matching.
- Duplicate-invoice checks.
- VAT and currency validation.
- Invoice approval workflows.
- Rejection and correction queues.
- Clear document statuses.
- Invoice-delivery reconciliation.
- Cash-flow forecasting.
- Supplier and customer communication history.
- Dashboard alerts for blocked invoices and overdue payments.
- E-invoice format and channel management.
- PEPPOL or country-specific e-invoicing connectivity where required.
Compliance becomes easier when exceptions are visible early and handled in a controlled workflow.
From Compliance Cost to Competitive Advantage
The strongest companies do not stop at filing the required report.
They use their finance data to improve operations.
When data is structured and connected, management can see:
- Which customers pay late.
- Which suppliers create invoice mismatches.
- Which products have changing margins.
- Where tax or pricing errors occur most often.
- Which approvals delay purchasing.
- Which markets create the most correction work.
- How much cash is tied up in unresolved invoices.
- Which sales channels create the highest invoice-processing cost.
This is why clean finance data creates competitive advantage.
It improves compliance, but it also improves cash flow, decision-making, supplier control, customer service, and operational transparency.
The same data that helps you satisfy a tax authority can help you run a better business.
A Practical 2026–2030 Readiness Roadmap
2026: Build the Foundation
- Review SAF-T readiness.
- Clean customer, supplier, product, and VAT master data.
- Map invoice-to-accounting processes.
- Test structured data exports.
- Identify manual finance processes.
- Define ownership for data quality.
- Prepare e-invoice receiving capability for international partners.
2027: Connect the Transaction Chain
- Strengthen purchase-order, goods-receipt, invoice, and payment matching.
- Improve correction and credit-note processes.
- Add approval workflows and audit trails.
- Review foreign VAT registrations and local invoicing obligations.
- Prepare for German and French e-invoicing developments where relevant.
2028: Expand International Readiness
- Support structured e-invoice sending and receiving across key trading markets.
- Prepare for Germany’s broader domestic B2B e-invoicing requirement.
- Improve PEPPOL or national-platform connectivity where needed.
- Review multi-country tax and document-retention controls.
2029: Test Cross-Border Reporting Capability
- Map cross-border B2B transaction flows.
- Review VAT treatment across EU markets.
- Test structured invoice data for high-volume international processes.
- Identify gaps before ViDA reporting requirements begin.
2030: Operate With Digital Reporting in Mind
- Support EU cross-border B2B digital reporting requirements.
- Maintain structured, timely, and auditable invoice data.
- Monitor country-specific developments.
- Continue improving data quality and process automation.
How SIX ERP Supports Financial Readiness
SIX ERP helps businesses build the connected finance environment required for SAF-T, e-invoicing, VAT compliance, and future EU reporting.
The platform can support:
- Structured customer and supplier master data.
- Sales, purchase, and financial document workflows.
- VAT logic and tax-code management.
- Multi-currency business operations.
- Purchase-order and goods-receipt matching.
- Invoice approval processes.
- Payment and reconciliation workflows.
- Digital document storage and audit trails.
- SAF-T-ready data mapping and reporting.
- E-invoice and PEPPOL-ready processes.
- Financial dashboards and exception monitoring.
- Role-based access and change history.
The goal is not to produce one file before a deadline.
The goal is to create financial processes that remain reliable as Europe’s reporting requirements continue to evolve.
Start Before Your Customer Forces the Change
The shift toward structured finance data is already happening.
SAF-T is active in Bulgaria. Belgium, Germany, France, and Poland are changing how businesses exchange invoices. ViDA will bring cross-border digital reporting requirements from 2030.
The companies that wait will spend more time correcting data, handling invoice exceptions, and responding to customer requirements under pressure.
The companies that prepare early will build cleaner processes, faster payments, stronger financial control, and better international readiness.
The future of compliance is not more administration. It is better-connected business data.
SIX ERP helps businesses build that foundation—today, before the next reporting deadline becomes a business emergency.
