VAT registration can look deceptively simple: fill out an application, provide a few company details, and wait for a VAT number.
In practice, the document requirements can be much more detailed—especially when a U.S. company is registering for VAT in another country.
Tax authorities may want proof that your business legally exists, evidence of who controls it, details of the transactions creating the VAT obligation, projected or historical sales, bank information, and documents showing where goods are stored or where customers are located.
There is also an important point to understand before collecting paperwork:
The United States does not have a federal value-added tax. U.S. businesses generally deal with state and local sales taxes domestically. VAT registration usually becomes relevant when a U.S. company sells, stores, imports, or supplies goods or services in a country that operates a VAT system.
Below you can easily understand documents required for VAT registration, which documents U.S. companies should prepare in advance, what foreign tax authorities usually verify, and how requirements can differ in the United Kingdom, European Union, UAE, and other VAT jurisdictions.
Table of Contents
Quick Answer: What Documents Are Usually Required for VAT Registration?
Although every country has its own VAT registration rules, a typical application may require some or all of the following:
- Certificate of incorporation or business registration certificate
- Articles of incorporation, bylaws, partnership agreement, or operating agreement
- Federal Employer Identification Number (EIN) or other tax identification details
- Passport or government-issued ID for directors, owners, partners, or authorized representatives
- Proof of business address
- Bank account information or a bank confirmation letter
- Sales invoices and purchase invoices
- Customer contracts or purchase orders
- Evidence of taxable turnover
- Sales forecasts for a new business
- Description of business activities
- Website or e-commerce store information
- Import, customs, or warehouse documents
- Lease agreement or proof of local establishment, if applicable
- Power of attorney when an agent files the application
- Fiscal representative appointment documents where local law requires representation
The exact list depends on where you are registering, what you sell, where your inventory is located, who your customers are, and whether your company has a local establishment.
That is why downloading a generic “VAT registration document checklist” without first identifying the jurisdiction often creates more confusion than it solves.
First: Does a U.S. Business Actually Need VAT Registration?
Being incorporated in the United States does not prevent a company from having VAT obligations overseas.
A VAT registration requirement can arise because of the transaction rather than the location of your headquarters.
Common triggers include:
| Business activity | Possible VAT consequence |
|---|---|
| Holding inventory in another country | Local VAT registration may be required |
| Importing goods under your company name | VAT and customs registration may be needed |
| Selling goods locally from overseas stock | Local VAT registration may apply |
| Selling directly to foreign consumers | VAT may need to be collected at checkout |
| Providing digital or electronic services | Customer-location VAT rules may apply |
| Using a foreign warehouse or fulfillment center | May create local VAT obligations |
| Selling through online marketplaces | Marketplace rules may apply, but registration can still be required in some situations |
| Moving your own goods between countries | May create VAT reporting obligations |
| Establishing a branch or fixed establishment abroad | Local VAT registration is often relevant |
A registration threshold does not always protect a foreign company.
For example, the United Kingdom currently requires VAT registration when taxable turnover exceeds £90,000, but HMRC also states that businesses based outside the U.K. may have to register regardless of turnover when making taxable supplies in the U.K.
The UAE uses a mandatory VAT registration threshold of AED 375,000 for resident businesses and a voluntary threshold of AED 187,500. The Federal Tax Authority specifically notes that the normal threshold does not apply in the same way to foreign businesses making taxable supplies for which no other person is responsible for the VAT.
The practical lesson is simple:
Check why you need a VAT number before you start gathering documents.
Core Documents Required for VAT Registration
1. Certificate of Incorporation or Business Registration Document
The tax authority first needs to establish that the applicant is a real legal entity.
For a U.S. corporation or LLC, the supporting document may be your:
- Certificate of Incorporation
- Certificate of Formation
- Articles of Organization
- State-issued business registration
- Partnership registration document
Use the document showing the company’s exact legal name.
A surprisingly common VAT registration problem is inconsistent company information. For example:
Formation document: Northstar Trading LLC
Bank account: Northstar Trading
VAT application: Northstar Trading USA LLC
Even if all three refer to the same business, a foreign tax authority may request clarification.
Use the legal name exactly as it appears on the official formation record.
2. Articles of Incorporation, Operating Agreement, or Company Constitution
A registration certificate confirms that the business exists.
Formation documents explain how the business is structured and who has authority to act for it.
Depending on the entity type and jurisdiction, you may need:
- Articles of Incorporation
- Articles of Organization
- Corporate bylaws
- LLC operating agreement
- Partnership agreement
- Memorandum and Articles of Association
- Shareholder information
These documents are particularly important when a foreign tax authority needs to identify directors, managers, shareholders, beneficial owners, or authorized signatories.
France, for example, requires foreign companies applying for French VAT registration to provide a copy of their commercial registration and, for legal entities, copies of their constitutional documents. Translation requirements can also apply.
U.S. Business Tip
Do not assume that a two-page state formation certificate will always be enough.
Keep your formation certificate and your governing corporate documents available before starting an overseas VAT application.
3. Federal Tax Identification Number
Foreign tax authorities frequently ask for the tax number assigned to the business in its home country.
For most U.S. businesses, this means the Employer Identification Number (EIN).
You may be asked to enter the EIN directly into the VAT application or provide evidence supporting it.
Useful records to keep available include:
- IRS EIN confirmation documentation
- Previous federal tax filings, if specifically requested
- Other official correspondence showing the company’s EIN and legal name
An EIN does not replace a foreign VAT number.
The two numbers serve different purposes.
Your EIN identifies the business for U.S. federal tax purposes. A VAT identification number identifies the business within the VAT system of the country or scheme where it is registered.
4. Passport or Government-Issued ID
VAT authorities often verify the identity of the people controlling or representing the business.
Depending on the country and legal structure, identification may be requested for:
- Director
- LLC manager
- Business owner
- Partner
- Beneficial owner
- Authorized signatory
- Sole proprietor
- Tax representative
A valid passport is usually the easiest document for a U.S. applicant to provide internationally.
Make sure the scan is:
- Complete
- Legible
- In color if requested
- Not expired
- Free from cropped edges
Poor passport scans routinely create unnecessary requests for additional information.
5. Proof of Business Address
A tax authority may need to confirm where the business is legally established and where its activities are actually carried out.
Possible documents include:
- Business bank statement
- Commercial lease
- Utility bill
- State registration record
- Government correspondence
- Office rental agreement
- Registered office evidence
The document should normally show the same business name and address used in the VAT application.
If the registered office, mailing address, warehouse address, and operating address are different, prepare a clear explanation of each location.
6. Bank Account Details
Some VAT authorities request bank information during registration. Others collect it later, particularly when VAT refunds may be paid to the business.
Typical evidence includes:
- Bank confirmation letter
- Bank statement
- Account-holder details
- Account number
- Routing or international payment information
- IBAN and SWIFT/BIC details where applicable
The UAE Federal Tax Authority, for example, lists a bank letter containing account information as an optional supporting document and specifies that a legal entity’s bank account should be in the company’s name.
For international VAT registrations, using a bank account whose legal owner clearly matches the applicant can prevent additional verification questions.
Documents That Prove You Actually Need VAT Registration
Company documents prove who you are.
The second group of documents answers a different question:
Why does this business need a VAT number in this country?
This is where many foreign VAT applications slow down.
Sales Invoices
Invoices can establish:
- What you sell
- Who your customers are
- Where customers are located
- When taxable activity began
- The value of taxable transactions
Prepare several representative invoices rather than an unrelated collection of documents.
Customer Contracts
A signed contract can be more persuasive than a sales forecast because it shows an actual commercial relationship.
A tax authority may review:
- Customer name
- Customer country
- Products or services
- Contract start date
- Payment terms
- Delivery terms
- Supply location
New businesses with limited invoice history may rely heavily on contracts and purchase orders.
Purchase Orders
Purchase orders are useful when registration is required before commercial activity is fully underway.
They can help support expected turnover or demonstrate planned taxable supplies.
The UAE’s Federal Tax Authority specifically identifies valid purchase orders and contracts as possible supporting evidence for expected revenue.
Turnover Records
Many VAT registrations depend on taxable turnover.
Prepare a clear calculation showing:
Previous 12-month taxable turnover
and, where relevant,
Expected taxable turnover for the coming period
Supporting records may include:
- Sales ledger
- Accounting reports
- Profit and loss statement
- Invoices
- Marketplace reports
- Bank transaction summaries
- Signed contracts
- Revenue forecast
Do not simply enter a large estimated number because you believe it will make approval easier.
Tax authorities can ask how the figure was calculated.
Business Activity Description
A weak description such as:
“We sell products online.”
does not tell a tax authority enough.
A better explanation might say:
“The company sells consumer electronics from U.S. and European suppliers through its own e-commerce website. Inventory for European customers will be stored with a third-party fulfillment provider in Germany and shipped to consumers in Germany, France, and the Netherlands.”
That description immediately explains why VAT questions may arise.
A strong activity description usually covers:
what you sell + who buys it + where goods/services originate + where they are delivered + how orders are fulfilled.
Extra Documents for E-Commerce and Amazon Sellers
Online sellers often have a different VAT document pack from traditional service businesses.
You may need evidence such as:
- Amazon Seller Central reports
- Marketplace agreements
- Fulfillment center information
- Inventory reports
- Shopify or other storefront information
- Website URL
- Customer invoices
- Import records
- Shipping records
- Warehouse contracts
- Marketplace transaction reports
Why Inventory Location Matters
A U.S. company can sell through the same website but have completely different VAT obligations depending on where the inventory is physically stored.
For example:
Scenario A: Products are shipped directly from the United States to European customers.
Scenario B: Products are imported in bulk and stored at a warehouse inside the EU before customer orders are placed.
Scenario B can create domestic VAT obligations in the country where the stock is held even though the company’s headquarters remain in the United States.
This is one reason VAT registration should be reviewed before moving inventory overseas, not after a fulfillment provider has already received it.
Additional Documents for Importers
If your VAT obligation involves importing products, expect the tax authority to ask for more information about the supply chain.
Relevant records can include:
| Document | What it helps establish |
|---|---|
| Customs declarations | Import activity |
| Commercial invoices | Supplier, value, and goods |
| Freight documents | Movement of goods |
| Warehouse agreement | Location of inventory |
| Importer-of-record information | Party responsible at customs |
| EORI/customs number | Customs registration |
| Purchase invoices | Acquisition of goods |
| Incoterms | Responsibility for import and delivery |
Keep VAT registration and customs planning connected.
A VAT number by itself does not automatically solve customs registration, importer-of-record, or EORI requirements.
Power of Attorney and Authorized Representative Documents
A company does not always submit its own VAT application.
Accountants, tax agents, VAT consultants, or fiscal representatives frequently handle the process.
When another party acts for the business, the tax authority may request:
- Signed power of attorney
- Authorization letter
- Agent appointment
- Representative agreement
- Director authorization
- Board authorization in some situations
France specifically requires a signed mandate when a foreign company chooses to use an authorized agent for VAT registration.
The authorized person’s name should match the identity documents submitted with the application.
Do U.S. Companies Need a Fiscal Representative?
Sometimes.
A fiscal representative is a locally established person or company appointed to handle VAT obligations for a foreign business.
This requirement is highly country-specific.
Some jurisdictions allow a U.S. business to register directly. Others may require or strongly encourage local representation.
France provides a useful example. Its rules distinguish between businesses established in countries covered by specified administrative-assistance arrangements and businesses in other non-EU countries. In situations where fiscal representation is required, the representative handles VAT registration and subsequent reporting obligations on behalf of the foreign company.
Do not appoint a fiscal representative simply because a commercial provider says every U.S. company needs one.
Check the tax authority’s current country-specific rule first.
Do You Need an IRS Form 6166?
Not for every VAT registration.
IRS Form 6166 is a Certification of U.S. Tax Residency issued after an eligible taxpayer requests certification using Form 8802.
It can be relevant when a foreign authority asks for evidence of U.S. tax residence or when a business is seeking certain foreign tax benefits.
The IRS specifically notes that Form 6166 may be used as proof of U.S. tax residence in connection with certain foreign VAT matters, but it does not establish that the taxpayer automatically qualifies for every foreign VAT exemption or treatment.
So:
Do not order Form 6166 solely because you are applying for a VAT number unless the jurisdiction, tax authority, or adviser confirms that it is needed.
VAT Registration Documents by Country: 2026 Examples
There is no international VAT registration form. The filing package changes considerably by jurisdiction.
United Kingdom
For a U.K. VAT application, HMRC states that a limited company generally needs information including:
- Company registration number
- Business bank account details
- Unique Taxpayer Reference, where applicable
- Annual turnover
- Estimated taxable turnover for the next 12 months
- Relevant Corporation Tax and PAYE information
Individuals and partnerships have different identification requirements.
Important for U.S. Businesses
The standard U.K. taxable-turnover threshold is currently £90,000, but a business established outside the U.K. can face registration requirements without relying on that normal threshold when making taxable U.K. supplies.
European Union
The EU does not issue one universal VAT number that automatically replaces every national registration.
VAT registration is administered primarily by individual Member States, and national requirements vary.
However, the EU’s One Stop Shop (OSS) can reduce the need for multiple registrations for qualifying cross-border B2C transactions.
A non-EU business can, depending on the type of supply, use schemes such as:
- Non-Union OSS for qualifying B2C services
- Union OSS for certain intra-EU distance sales of goods
- Import One Stop Shop (IOSS) for qualifying imported consignments not exceeding €150
The European Commission confirms that the OSS allows qualifying businesses to use one Member State of Identification for covered transactions instead of separately reporting those transactions in every customer country.
But OSS Does Not Eliminate Every Local VAT Registration
A local VAT number may still be required where the business:
- Stores inventory locally
- Makes domestic supplies
- Imports under arrangements outside IOSS
- Maintains certain local business activities
- Conducts transactions not covered by OSS
Treat OSS as a reporting simplification, not a universal substitute for local VAT registration.
France
France illustrates how detailed nonresident VAT registration can become.
Official French guidance for foreign companies lists supporting documents such as:
- Commercial-register certificate or equivalent from the home country
- Articles or constitutional documents
- Required translations
- Identification documents in relevant cases
- Mandate where an agent is appointed
- Fiscal-representative documentation where representation rules apply
France’s tax administration updated its foreign-business VAT guidance in 2025 and related representation guidance in 2026.
For U.S. businesses, this is a good reminder not to assume that documents issued in English will always be accepted without additional translation or representation formalities.
United Arab Emirates
The UAE Federal Tax Authority publishes one of the more detailed official VAT registration document lists.
Depending on the entity and application, the FTA may request:
- Certificate of incorporation
- Memorandum of Association or partnership agreement
- Commercial registration certificate
- Trade license
- Branch licenses
- Passport and Emirates ID information for relevant owners or authorized signatories
- Power of attorney
- Turnover declaration
- Sales invoices
- Purchase orders
- Contracts
- Lease agreements
- Expected-revenue evidence
- Customs information
- Bank-account documentation
The FTA currently states that the processing target for a completed VAT registration application is 20 business days, and uploaded supporting documents must be PDF files subject to the platform’s stated file-size limits.
As of 2026, the UAE mandatory registration threshold for resident businesses remains AED 375,000, with voluntary registration available above AED 187,500 where the relevant conditions are met.
VAT Registration Checklist for a U.S. LLC or Corporation
A practical way to prepare is to create one digital folder containing these categories before opening the VAT application portal.
| Folder | Documents to prepare |
|---|---|
| Company | Formation certificate, Articles, operating agreement/bylaws |
| U.S. Tax | EIN documentation, relevant tax details |
| Ownership | Director/manager/owner details |
| Identity | Valid passport copies |
| Address | Business address evidence |
| Banking | Bank statement or confirmation letter |
| Sales | Customer invoices, contracts, sales reports |
| Forecasts | Expected revenue and taxable-turnover calculation |
| Supply Chain | Warehouse, freight, customs, inventory documents |
| E-commerce | Marketplace reports, website/store details |
| Authorization | POA or agent mandate |
| Local VAT | Fiscal representative or local registration documents if required |
Keep filenames clear.
Instead of:
scan003.pdf
use:
Certificate-of-Formation-Northstar-LLC.pdf
A well-organized application package makes it much easier to answer follow-up questions quickly.
Five Reasons VAT Registration Applications Get Delayed
Company Names Do Not Match
Your certificate, bank account, invoices, website, and application should use consistent legal information.
Trading names can be included separately.
The Business Cannot Explain Why It Needs a VAT Number
Tax authorities increasingly want proof of actual or expected taxable activity.
A VAT application filed “just in case” may receive more scrutiny than one supported by customer contracts, purchase orders, warehouse agreements, or invoices.
Turnover Is Entered Without Evidence
Keep the calculation behind the number.
If your application states expected taxable sales of $500,000, be prepared to explain where that estimate came from.
Documents Are Outdated or Illegible
Check:
- Passport expiry dates
- Bank-statement dates
- Company addresses
- License validity
- Scan quality
- Missing pages
The Applicant Uses the Wrong VAT Scheme
A company sometimes applies for a full domestic VAT registration when OSS, IOSS, marketplace rules, reverse charge, or another mechanism could apply.
The opposite problem also occurs: a business assumes OSS covers transactions that actually require local VAT registration.
Determining the VAT treatment first can save weeks of unnecessary registration work.
VAT Registration vs. Sales Tax Registration
For a U.S. company, VAT and sales tax should not be treated as interchangeable terms.
| VAT | U.S. Sales Tax |
|---|---|
| Common internationally | Primarily state/local in the U.S. |
| Collected through stages of the supply chain | Generally collected at retail sale |
| Businesses may recover eligible input VAT | Resale/exemption mechanisms work differently |
| VAT invoices have specific requirements | Sales tax invoice rules vary by state |
| VAT number issued by foreign tax authority | Sales tax permit issued by state authority |
| Cross-border rules are often central | Nexus is a major U.S. concept |
A business can have U.S. sales tax obligations and foreign VAT obligations at the same time.
Do You Need One VAT Number or Several?
Possibly several.
A U.S. company does not receive one “European VAT number” that automatically covers every type of transaction throughout Europe.
Your registration footprint depends on your operating model.
Consider this example:
A U.S. e-commerce company stores inventory in Germany but sells to customers in Germany, France, Italy, and Spain.
It may need a German VAT registration because inventory is held and domestic supplies occur there, while eligible cross-border consumer sales may potentially be reported through the Union OSS.
Change the warehouse country, importer, marketplace arrangement, or customer type, and the VAT structure can change.
That is why VAT planning should follow the flow of goods and services, not simply the location of customers.
What Happens After VAT Registration?
Obtaining the VAT number is only the beginning.
Depending on the jurisdiction, the business may then need to:
- Add the VAT number to invoices
- Charge the correct VAT rate
- Issue compliant VAT invoices
- File periodic VAT returns
- Maintain VAT records
- Report cross-border transactions
- Keep digital accounting records
- Pay collected VAT
- Reconcile input and output VAT
- Maintain marketplace or customs records
- Update the tax authority when business details change
In the U.K., HMRC states that businesses receive their VAT registration number, effective registration date, and information about filing their first return after registration. VAT-registered businesses are generally brought into Making Tax Digital unless an exemption applies.
Build the compliance process before the VAT number arrives.
A Better Way to Prepare Your VAT Registration File
Before submitting an application, test your document pack against four questions.
Can the authority identify the company?
Your legal name, registration number, entity type, address, and tax ID should be easy to verify.
Can the authority identify the people behind it?
Directors, owners, managers, and authorized applicants should be properly documented.
Can the authority understand the taxable activity?
Invoices, contracts, inventory records, customer locations, and supply-chain documents should explain why VAT registration is required.
Can the authority verify the numbers?
Your turnover calculation, forecasts, invoices, and accounting records should support the values entered in the application.
If your file answers all four clearly, you have eliminated many of the most common reasons for follow-up questions.
Documents Required for VAT Registration: FAQs
What are the main documents required for VAT registration?
Most businesses should expect to provide proof of business registration, formation documents, tax identification information, owner or director identification, business-address evidence, bank details, turnover information, and evidence of taxable business activity. Requirements vary by country.
Does the United States have VAT registration?
No federal VAT system currently operates in the United States. U.S. companies usually encounter VAT when doing business in foreign jurisdictions. The U.S. primarily uses state and local sales taxes instead.
Can a U.S. company get a VAT number?
Yes. A U.S. company can register for VAT in another country when its business activities create a registration requirement or when voluntary registration is permitted.
You generally do not need to incorporate a completely new company in that country solely to obtain a VAT number, although local establishment, representative, or registration requirements can vary.
Is an EIN the same as a VAT number?
No.
An EIN is a U.S. federal taxpayer identification number. A VAT number is issued under a foreign VAT system and is used for VAT reporting, invoicing, and related compliance.
Do I need a passport for VAT registration?
Foreign VAT registrations often require identification for directors, business owners, sole proprietors, managers, or authorized representatives. A valid passport is commonly used.
The precise requirement depends on the country and business structure.
Do I need a business bank account before registering for VAT?
Not universally.
Some jurisdictions request bank information during VAT registration; others collect it later. If bank evidence is required for a corporation or LLC, the safest approach is normally to provide an account clearly held in the company’s legal name.
Can I register for VAT before making sales?
Sometimes.
Certain jurisdictions permit registration based on expected taxable activity, but the tax authority may ask for contracts, purchase orders, forecasts, expense invoices, or other evidence that the planned business activity is genuine.
Do foreign businesses have the same VAT registration threshold as local businesses?
Not always.
Some countries have special rules for non-established businesses.
For example, the normal U.K. registration threshold does not necessarily protect a business established outside the U.K., and the UAE specifically applies separate considerations to nonresident suppliers.
What is proof of taxable turnover?
Proof may include invoices, sales ledgers, accounting reports, marketplace statements, contracts, bank records, purchase orders, or other records showing taxable sales.
For expected turnover, signed contracts and purchase orders can be especially useful.
Is a certificate of good standing required for VAT registration?
It depends on the country.
Some tax authorities request only a formation or commercial-registration certificate. Others may request recently issued company-registry evidence or additional proof that the entity remains active.
Do not purchase a certificate of good standing until you confirm it is actually required.
Do VAT registration documents need to be translated?
They can.
Some countries accept English documents. Others require translations, and certain jurisdictions may require certified or sworn translations for specific foreign-language legal documents.
France is one example where translation requirements can apply to constitutional documents submitted by foreign businesses.
Do I need a fiscal representative to register for VAT?
Possibly.
Fiscal-representation rules depend on the country, where your company is established, and the type of taxable activity. Some jurisdictions allow direct registration, while others impose representation requirements on certain nonresident companies.
Can I use OSS instead of getting VAT numbers across Europe?
For qualifying transactions, OSS can significantly reduce the need for multiple registrations.
It does not cover every transaction. Holding inventory in an EU country, making domestic supplies, importing goods under certain arrangements, or carrying out other local activities can still create a separate VAT registration requirement.
Is IOSS the same as VAT registration?
No.
IOSS is a special EU scheme designed for qualifying distance sales of imported goods in consignments not exceeding €150.
A U.S. seller using IOSS may need an eligible EU-established intermediary under the applicable rules. IOSS does not replace every local VAT obligation.
How long does VAT registration take?
There is no worldwide processing time.
A straightforward application may be processed faster than one involving foreign ownership, complex transactions, missing documents, fiscal representation, or requests for clarification.
For comparison, the UAE Federal Tax Authority currently publishes an estimated completion period of 20 business days after receiving a completed application.
What happens if I register for VAT late?
Possible consequences include backdated VAT liability, interest, penalties, and the need to correct invoices or returns.
Registration deadlines vary by jurisdiction, so a business approaching a threshold or beginning taxable overseas operations should review its obligations before the first taxable transaction whenever possible.
Final VAT Registration Document Checklist
Before submitting your application, confirm that you have:
Company identity: formation and registration documents
Tax identity: EIN or home-country tax information
People: director, owner, manager, and authorized-signatory identification
Address: evidence supporting the registered or business location
Banking: account details where required
Activity: clear explanation of what the company sells and how transactions work
Sales evidence: invoices, contracts, marketplace reports, or purchase orders
Turnover: historical calculation or properly supported forecast
Supply chain: warehouse, import, customs, and shipping records where relevant
Authorization: POA, agent mandate, or fiscal-representative documents where required
Formatting: translations, certifications, and file formats required by the local authority
One final check matters more than any template:
Make sure the documents tell one consistent story.
The company name, address, ownership, business activity, turnover, transaction flow, and reason for requesting VAT registration should all agree with one another.
That is usually more important than simply uploading a large number of files.
2026–2027 Planning Note
This guide reflects VAT registration information available in 2026.
Businesses preparing registrations for 2027 should verify the applicable registration threshold, filing portal, fiscal-representation rules, document-format requirements, and e-commerce schemes immediately before submitting an application. VAT laws and administrative procedures can change independently in each country.
For a U.S. company, the safest sequence is:
identify the taxable transaction → identify the country → determine whether local VAT registration or a special scheme applies → then build the document file.
Doing it in that order prevents unnecessary registrations and gives the tax authority exactly the evidence it needs.