In brief: the direct answer
Lines with different tax treatments on one invoice, and how totals must still reconcile. Multi-rate and mixed-supply invoices is best approached through mixed supply as separate line treatments. For multi-rate and mixed-supply invoices, the tax treatment per line decides the outcome. For multi-rate and mixed-supply invoices, the tax treatment per line missing means rejection. For multi-rate and mixed-supply invoices, the tax treatment per line wrongly mapped means wrong meaning. This guide keeps returning to one check for multi-rate and mixed-supply invoices: treat each line tax treatment separately.
The route stage for multi-rate and mixed-supply invoices is Validate. At Validate, the tax treatment per line is what follows next. For multi-rate and mixed-supply invoices, a Validate decision cannot be repaired later. For multi-rate and mixed-supply invoices, a Validate decision cannot be repaired cheaply. Check the tax treatment per line for multi-rate and mixed-supply invoices before moving on.
The record at this stage
Follow the invoice as a record through multi-rate and mixed-supply invoices. At Validate, the record for multi-rate and mixed-supply invoices carries the tax treatment per line. Answer the tax treatment per line for multi-rate and mixed-supply invoices with evidence. Then the rest of tax, vat and vida becomes easier. Then the rest of multi-rate and mixed-supply invoices becomes easier to check.
Describe the record before the system for multi-rate and mixed-supply invoices. Systems change, but the tax treatment per line for multi-rate and mixed-supply invoices stays. Providers change, but the tax treatment per line for multi-rate and mixed-supply invoices stays. Formats change, but the tax treatment per line for multi-rate and mixed-supply invoices stays. For multi-rate and mixed-supply invoices, ask what record a system produces. For multi-rate and mixed-supply invoices, ask what record a system accepts. For multi-rate and mixed-supply invoices, ask what status evidence it returns.
What the data must carry
The data that matters most for multi-rate and mixed-supply invoices is the tax treatment per line. That is not a slogan for multi-rate and mixed-supply invoices. It is what the next multi-rate and mixed-supply invoices check looks at. If the tax treatment per line for multi-rate and mixed-supply invoices is missing, expect rejection. If the tax treatment per line for multi-rate and mixed-supply invoices is ambiguous, expect rejection. If the tax treatment per line for multi-rate and mixed-supply invoices is wrongly formatted, expect rejection.
Check the tax treatment per line as the receiver reads multi-rate and mixed-supply invoices. For multi-rate and mixed-supply invoices, screen correctness is not enough. For multi-rate and mixed-supply invoices, file correctness is not enough. For multi-rate and mixed-supply invoices, mapping correctness matters too. Use the mapping table for multi-rate and mixed-supply invoices first. Use the receiver test for multi-rate and mixed-supply invoices second. Use a sample invoice for multi-rate and mixed-supply invoices third.
Validation and evidence
For multi-rate and mixed-supply invoices, validation has three gates. Multi-rate and mixed-supply invoices structure comes first. Multi-rate and mixed-supply invoices business rules come second. Multi-rate and mixed-supply invoices receiver rules come third. Each multi-rate and mixed-supply invoices gate has its own failure message.
A multi-rate and mixed-supply invoices rejection should name its rule. A multi-rate and mixed-supply invoices rejection should name its field. A multi-rate and mixed-supply invoices rejection should name the value sent. A multi-rate and mixed-supply invoices rejection should name the value expected. Without those facts, a multi-rate and mixed-supply invoices rejection is a delay. Return a multi-rate and mixed-supply invoices rejection with that request.
Evidence for multi-rate and mixed-supply invoices is what remains afterwards. Keep the multi-rate and mixed-supply invoices invoice as exchanged. Keep multi-rate and mixed-supply invoices status messages with it. Keep any multi-rate and mixed-supply invoices correction linked to it. An auditor for multi-rate and mixed-supply invoices asks for that set.
Where it breaks, and the check to make first
The common multi-rate and mixed-supply invoices break is simple. For multi-rate and mixed-supply invoices, treat each line tax treatment separately was skipped. For multi-rate and mixed-supply invoices, the receiver found the problem. For multi-rate and mixed-supply invoices, the sender must now correct it. For multi-rate and mixed-supply invoices, the sender must resend it. For multi-rate and mixed-supply invoices, the sender must explain it.
Illustration, with round numbers only, for multi-rate and mixed-supply invoices: A seller sends 20 invoices for multi-rate and mixed-supply invoices. 2 fail on the tax treatment per line for multi-rate and mixed-supply invoices. Checking the tax treatment per line first for multi-rate and mixed-supply invoices costs minutes. A multi-rate and mixed-supply invoices receiver rejection costs days. Sometimes a multi-rate and mixed-supply invoices rejection costs a payment cycle. That is why multi-rate and mixed-supply invoices repeats one check: treat each line tax treatment separately.
What to verify before acting
Before acting on multi-rate and mixed-supply invoices, verify three things. First, jurisdiction and transaction for multi-rate and mixed-supply invoices. First, buyer and country for multi-rate and mixed-supply invoices. Second, European Commission: VAT in the Digital Age for multi-rate and mixed-supply invoices today. Third, the multi-rate and mixed-supply invoices buyer requirement in writing.
A guide on multi-rate and mixed-supply invoices organises those questions. A guide on multi-rate and mixed-supply invoices cannot answer a specific transaction. This guide on multi-rate and mixed-supply invoices gives general information only. This guide on multi-rate and mixed-supply invoices is not advice for a specific invoice. For a specific invoice about multi-rate and mixed-supply invoices, check European Commission: VAT in the Digital Age. For a specific question about multi-rate and mixed-supply invoices, ask a qualified adviser.
How this guide is layered
Every guide on this site is read through the same twelve layers, in the order that fits its topic: accounting, lifecycle, evidence, direct intent, transaction, jurisdiction, obligation, data, format, network, validation, tax. The layers are a reading method, not a claim about any single system.
Evidence basis: Primary sources named in the sources section, checked 2026-10-27; country guides are dated research routes, not mandate calendars. Scope: General educational information only; no individual legal, tax, accounting or compliance advice; jurisdiction and transaction specific checks remain with the reader.
Related guides
- Tax, VAT and ViDA explained: what the invoice carries for tax - Tax data on the invoice, VAT reporting, and the EU VAT in the Digital Age programme, explained as a programme, not as a date list.
- Tax audits and invoice evidence - What a tax auditor asks for, and why the invoice plus its status evidence answers more than the invoice alone.
- Cross-border VAT and invoice data - Intra-EU and export supplies, identifiers and the data that supports the treatment claimed.
Back to the pillar guide: Tax, VAT and ViDA explained: what the invoice carries for tax.
In this topic
- Tax, VAT and ViDA explained: what the invoice carries for tax
- Cross-border VAT and invoice data
- E-reporting vs e-invoicing: two different obligations
- Tax advice boundary for this guide
- Tax audits and invoice evidence
- Tax errors and corrections on an invoice
- Tax exemptions and reverse charge on an invoice
- VAT data on an invoice line: category, rate and amount
- VAT reporting from invoice data
- ViDA programme in plain terms
Primary sources and further reading
These official resources support the standards and regulatory context. Check their current versions before implementation.
- European Commission: VAT in the Digital Age - EU VAT reform and phased measures
- European Commission: European legislation on eInvoicing - Directive 2014/55/EU and the European standard