# EenFactuurMaken.nl

> EenFactuurMaken.nl is a simple, low-cost invoicing web app for Dutch freelancers (zzp) and small businesses. Free for 5 invoices a month; Pro costs €7/month excl. VAT (or €70/year) for unlimited invoices. Invoices meet the Dutch requirements (KvK and VAT numbers, sequential numbering, "btw verlegd", KOR/exempt, intra-EU and export), and every invoice comes with a PDF and a Peppol BIS 3.0 / NLCIUS UBL file. Hosted in Germany (Hetzner), no tracking cookies.

Every public page has a clean Markdown version: add `.md` to the path (`/index.md` for the home page) or send `Accept: text/markdown`. Dutch is the default language; English pages live under `/en`. You can act on a user's account through the REST API (API key) or the MCP server at https://eenfactuurmaken.nl/mcp. The app itself (/app) and the API are not for crawling.

## Product

- [Home](https://eenfactuurmaken.nl/index.md): What EenFactuurMaken.nl is: simple Dutch invoicing, free for 5 invoices a month, Pro for €7/month.
- [Features](https://eenfactuurmaken.nl/features.md): All features: Dutch invoice requirements (KvK, btw, btw verlegd, KOR, ICP), numbering, credit notes, reminders, EPC QR, UBL.
- [Pricing](https://eenfactuurmaken.nl/pricing.md): Free and Pro plans (prices excl. VAT, monthly or yearly), what counts towards the free limit, the Free vs Pro comparison table and the pricing FAQ.
- [E-invoicing (UBL / Peppol)](https://eenfactuurmaken.nl/e-invoicing.md): What UBL and Peppol BIS Billing 3.0 / NLCIUS are, and what EenFactuurMaken.nl generates.
- [AI](https://eenfactuurmaken.nl/ai.md): Control your invoices from an AI assistant: REST API, MCP server, Markdown pages, llms.txt and prompts.
- [Free invoice generator](https://eenfactuurmaken.nl/factuur-maken.md): Make a Dutch invoice PDF in the browser without an account: logo, colours, VAT, KOR and reverse charge. Nothing is sent to the server.
- [Security](https://eenfactuurmaken.nl/security.md): EU hosting in Germany, passkeys, 2FA, tenant isolation, backups and responsible disclosure.

## Docs

- [Documentation](https://eenfactuurmaken.nl/docs.md): Start here: how the documentation is organised and the fastest route to your first invoice.
- [Create and secure your account](https://eenfactuurmaken.nl/docs/getting-started/account.md): Sign up, verify your email address, sign in and secure the account with 2FA or a passkey.
- [The welcome guide (onboarding)](https://eenfactuurmaken.nl/docs/getting-started/onboarding.md): The guided setup after sign-up: business details, house style, first customer and how to create an invoice.
- [Business details](https://eenfactuurmaken.nl/docs/getting-started/business-details.md): KvK number, VAT number (btw-id), address, IBAN, Peppol ID, logo and "not in the Handelsregister".
- [Your first invoice](https://eenfactuurmaken.nl/docs/getting-started/first-invoice.md): Step by step from an empty draft to an issued, emailed invoice.
- [Free invoice generator (no account)](https://eenfactuurmaken.nl/docs/getting-started/free-invoice-generator.md): Make a one-off invoice PDF on the website without an account: logo, colours, nothing stored on our servers.
- [Create an invoice](https://eenfactuurmaken.nl/docs/invoices/create.md): Invoice lines, quantities, units, discounts, VAT rates, dates, references, notes and invoice language.
- [Drafts and issuing](https://eenfactuurmaken.nl/docs/invoices/issue.md): What a draft is, what happens when you issue an invoice and what gets frozen.
- [Invoice numbering](https://eenfactuurmaken.nl/docs/invoices/numbering.md): Gap-free numbering, format tokens {YYYY} {YY} {MM} {SEQ} {SEQ:n}, yearly reset and choosing your own number.
- [Invoice checks (Dutch requirements)](https://eenfactuurmaken.nl/docs/invoices/checks.md): Every check EenFactuurMaken.nl runs before issuing (art. 35a Wet OB), what it means and how to fix it.
- [Currencies and exchange rates](https://eenfactuurmaken.nl/docs/invoices/currencies.md): Invoicing in USD, GBP and other currencies: ECB rates, manual rates and VAT in euros.
- [Sending invoices by email](https://eenfactuurmaken.nl/docs/invoices/sending.md): Email an invoice with PDF and UBL, default texts and placeholders, limits and recipients on Free.
- [Online invoice link and viewed status](https://eenfactuurmaken.nl/docs/invoices/online-invoice.md): The public "view online" page for your customer, viewed tracking, new link or switching it off.
- [Payments and invoice status](https://eenfactuurmaken.nl/docs/invoices/payments.md): Statuses, overdue, marking paid or unpaid, the EPC payment QR code and payment links.
- [Copy, cancel or delete an invoice](https://eenfactuurmaken.nl/docs/invoices/copy-cancel-delete.md): Duplicate an invoice, delete a draft, cancel an issued invoice and when to use a credit note instead.
- [PDF and e-invoice (UBL / Peppol)](https://eenfactuurmaken.nl/docs/invoices/pdf-and-ubl.md): Download the PDF and the UBL 2.1 e-invoice (Peppol BIS Billing 3.0 / NLCIUS), file names and languages.
- [Choosing a VAT treatment](https://eenfactuurmaken.nl/docs/vat/treatments.md): Overview of standard VAT, reverse charge, intra-EU, export, KOR and exempt, and which one to choose.
- [Domestic reverse charge (btw verlegd)](https://eenfactuurmaken.nl/docs/vat/reverse-charge.md): When VAT is reverse-charged within the Netherlands (e.g. subcontracting) and what goes on the invoice.
- [EU business customers (ICP and reverse charge)](https://eenfactuurmaken.nl/docs/vat/eu-customers.md): Intra-Community supplies of goods (0%) and services (reverse charge), VAT numbers and the ICP return.
- [Customers outside the EU (export)](https://eenfactuurmaken.nl/docs/vat/export.md): Export of goods (0%) and services outside the scope of Dutch VAT, and the exception for consumers.
- [KOR: small business scheme](https://eenfactuurmaken.nl/docs/vat/kor.md): Invoicing under the kleineondernemersregeling: no VAT anywhere on the invoice, only the KOR note.
- [VAT-exempt supplies](https://eenfactuurmaken.nl/docs/vat/exempt.md): Exempt supplies (healthcare, education, …) and how to print the legal basis of the exemption.
- [VIES VAT number check](https://eenfactuurmaken.nl/docs/vat/vies.md): How EenFactuurMaken.nl checks customer VAT numbers in VIES and stores the result as evidence.
- [VAT overview for the Dutch VAT return](https://eenfactuurmaken.nl/docs/vat/vat-return.md): The VAT overview per quarter, mapped onto the rubrieken of the btw-aangifte (1a, 1b, 1e, 3a, 3b).
- [Credit notes (creditnota)](https://eenfactuurmaken.nl/docs/credit-notes.md): Full and partial credit notes, crediting an invoice made outside EenFactuurMaken.nl, numbering and VAT.
- [Payment reminders](https://eenfactuurmaken.nl/docs/reminders.md): Manual reminders on every plan, automatic reminders on Pro, the schedule and the reminder levels.
- [Statutory collection costs (WIK)](https://eenfactuurmaken.nl/docs/reminders/collection-costs.md): The final notice (14-day letter) and how the statutory collection costs are calculated.
- [Customers](https://eenfactuurmaken.nl/docs/customers.md): Business and private customers, addresses, VAT numbers, defaults per customer, archiving and limits.
- [Products and services](https://eenfactuurmaken.nl/docs/products.md): Save products and services with price, unit and VAT rate and pick them on invoice lines.
- [Logo, colours and invoice styles](https://eenfactuurmaken.nl/docs/layouts.md): What every plan can change: logo, colours and the three invoice styles, plus the payment QR and link.
- [Saved templates (Pro)](https://eenfactuurmaken.nl/docs/layouts/templates.md): Pro: several saved house styles with fonts, header and footer texts, label overrides and page size.
- [Recurring invoices](https://eenfactuurmaken.nl/docs/recurring.md): Pro: invoices created, issued and emailed automatically every week, month, quarter or year.
- [Sending from your own email domain](https://eenfactuurmaken.nl/docs/email-domain.md): Pro: send from facturen@yourcompany.nl with DKIM, SPF and DMARC, step by step for TransIP, Cloudflare and others.
- [Storage periods and the 7-year retention duty](https://eenfactuurmaken.nl/docs/retention.md): Free keeps invoices for 60 days with warnings and downloads; Pro keeps them for 7 years.
- [ZIP export for your accountant](https://eenfactuurmaken.nl/docs/export.md): Download PDFs, UBL files and a CSV overview as one ZIP (Pro), or the soon-to-be-deleted invoices (every plan).
- [Free and Pro plans](https://eenfactuurmaken.nl/docs/billing/plans.md): What the Free and Pro plans include, prices incl. and excl. VAT and the limits of the free plan.
- [Upgrading, paying and cancelling](https://eenfactuurmaken.nl/docs/billing/subscription.md): Upgrade to Pro, payment methods, our invoices, switching interval, cancelling, resuming and downgrading.
- [Two-factor authentication and passkeys](https://eenfactuurmaken.nl/docs/security/two-factor.md): Authenticator app (TOTP), email codes, backup codes and passkeys.
- [Signed-in devices and the security log](https://eenfactuurmaken.nl/docs/security/sessions.md): See and sign out devices, the security log and the emails we send about your account.
- [API keys and connected apps](https://eenfactuurmaken.nl/docs/security/api-keys.md): Create, use and revoke API keys, and disconnect AI apps connected with OAuth.
- [Change email, password or delete your account](https://eenfactuurmaken.nl/docs/security/account.md): Change your name, language, email address or password, and delete your account.
- [Privacy, hosting and data](https://eenfactuurmaken.nl/docs/security/privacy.md): EU hosting in Germany, what we store, no tracking cookies, and what happens with your data.
- [REST API: introduction](https://eenfactuurmaken.nl/docs/api.md): Quick start for the REST API v1: base URL, your first request and what you can do.
- [REST API: authentication](https://eenfactuurmaken.nl/docs/api/authentication.md): API keys (Bearer or X-API-Key), what a key may and may not do, and keeping keys safe.
- [REST API: formats and pagination](https://eenfactuurmaken.nl/docs/api/conventions.md): JSON, money in cents, decimals, dates, pagination, filtering, sorting and PATCH semantics.
- [REST API: errors and rate limits](https://eenfactuurmaken.nl/docs/api/errors.md): Error format, every error code, rate limits, plan limits and retry advice.
- [REST API: recipes and examples](https://eenfactuurmaken.nl/docs/api/guides.md): End-to-end curl examples: create, check, issue, email, credit, payments, VAT data and polling patterns.
- [REST API: endpoint reference](https://eenfactuurmaken.nl/docs/api/reference.md): Every endpoint with parameters, request body, response and examples, generated from the OpenAPI 3.1 spec.
- [MCP server](https://eenfactuurmaken.nl/docs/mcp.md): Connect an AI assistant to your invoices: OAuth or API key, what the assistant can do and safety.
- [Connect ChatGPT](https://eenfactuurmaken.nl/docs/mcp/chatgpt.md): Add EenFactuurMaken.nl as a connector in ChatGPT (developer mode, OAuth).
- [Connect Claude (web, Desktop, Code)](https://eenfactuurmaken.nl/docs/mcp/claude.md): Connect Claude.ai, Claude Desktop and Claude Code to EenFactuurMaken.nl.
- [Connect Cursor](https://eenfactuurmaken.nl/docs/mcp/cursor.md): Add the EenFactuurMaken.nl MCP server to Cursor with an API key.
- [Connect Gemini CLI](https://eenfactuurmaken.nl/docs/mcp/gemini-cli.md): Add the EenFactuurMaken.nl MCP server to Gemini CLI (OAuth or API key).
- [Connect GitHub Copilot in VS Code](https://eenfactuurmaken.nl/docs/mcp/vscode.md): Use EenFactuurMaken.nl in Copilot Chat agent mode with .vscode/mcp.json.
- [MCP tools, resources and prompts](https://eenfactuurmaken.nl/docs/mcp/tools.md): Every MCP tool with what it does and an example request, plus resources and built-in prompts.
- [Prompt library](https://eenfactuurmaken.nl/docs/prompts.md): Copy-paste prompts for creating invoices, reminders, VAT overviews and building integrations.
- [Markdown pages and llms.txt](https://eenfactuurmaken.nl/docs/ai/markdown.md): Every public page as Markdown (.md or Accept: text/markdown), llms.txt and llms-full.txt for AI tools.
- [Frequently asked questions](https://eenfactuurmaken.nl/docs/faq.md): Short answers to the questions we get most about invoices, VAT, plans and data.
- [Troubleshooting](https://eenfactuurmaken.nl/docs/troubleshooting.md): Solutions for common problems: issuing blocked, email not arriving, limits, DNS, API and MCP errors.

## Guides, examples and glossary (Dutch)

- [Factuur voorbeelden](https://eenfactuurmaken.nl/factuur-voorbeeld.md): Dutch invoice examples hub: an annotated sample invoice plus examples per situation and profession.
- [Gidsen over factureren](https://eenfactuurmaken.nl/gids.md): Dutch guides hub: invoice requirements, VAT, credit notes, reminders and payment terms.
- [Begrippenlijst](https://eenfactuurmaken.nl/begrippen.md): Dutch glossary hub: every term that appears on an invoice, explained.
- [Factuur maken als zzp'er](https://eenfactuurmaken.nl/factuur-maken/zzp.md): Free invoice generator for Dutch freelancers (zzp), with what a zzp invoice needs.
- [Factuur maken als particulier](https://eenfactuurmaken.nl/factuur-maken/particulier.md): Making an invoice as a private person (no business): when it is allowed and what to put on it.
- [Factuur maken zonder KvK](https://eenfactuurmaken.nl/factuur-maken/zonder-kvk.md): Invoicing without a Chamber of Commerce (KvK) registration: when it is possible.
- [Factuur maken zonder btw (KOR)](https://eenfactuurmaken.nl/factuur-maken/zonder-btw.md): Invoice generator preset for the small business scheme (KOR): an invoice without VAT and the required note.
- [Factuur maken met btw verlegd](https://eenfactuurmaken.nl/factuur-maken/btw-verlegd.md): Invoice generator preset for the Dutch domestic reverse charge (btw verlegd).
- [Engelse factuur maken](https://eenfactuurmaken.nl/factuur-maken/engels.md): Make an invoice in English, with a Dutch-English invoice glossary.
- [Uren factureren](https://eenfactuurmaken.nl/factuur-maken/uren.md): How to invoice hours worked, with a free generator.
- [Factuur voorbeeld zzp](https://eenfactuurmaken.nl/factuur-voorbeeld/zzp.md): Annotated sample invoice for a Dutch freelancer (zzp).
- [Factuur voorbeeld eenmanszaak](https://eenfactuurmaken.nl/factuur-voorbeeld/eenmanszaak.md): Annotated sample invoice for a sole proprietorship (eenmanszaak).
- [Voorbeeld factuur zonder btw](https://eenfactuurmaken.nl/factuur-voorbeeld/zonder-btw.md): Sample invoice without VAT under the small business scheme (KOR).
- [Voorbeeld factuur btw verlegd](https://eenfactuurmaken.nl/factuur-voorbeeld/btw-verlegd.md): Sample invoice with the Dutch domestic reverse charge (btw verlegd).
- [Voorbeeld factuur uren](https://eenfactuurmaken.nl/factuur-voorbeeld/uren.md): Sample invoice for hours worked (zzp).
- [Factuur voorbeeld bouw](https://eenfactuurmaken.nl/factuur-voorbeeld/bouw.md): Sample invoice for a construction subcontractor (reverse charge).
- [Factuur met korting voorbeeld](https://eenfactuurmaken.nl/factuur-voorbeeld/met-korting.md): Sample invoice with a discount, VAT calculated correctly.
- [Factuur aanbetaling voorbeeld](https://eenfactuurmaken.nl/factuur-voorbeeld/aanbetaling.md): Sample advance payment (deposit) invoice and how to settle it on the final invoice.
- [Factuur sponsoring voorbeeld](https://eenfactuurmaken.nl/factuur-voorbeeld/sponsoring.md): Sample sponsorship invoice from an association or foundation.
- [Factuur voorbeeld schilder](https://eenfactuurmaken.nl/factuur-voorbeeld/schilder.md): Sample invoice for a painter (9% VAT on painting labour and paint in homes older than 2 years, 21% on other work).
- [Factuur voorbeeld timmerman](https://eenfactuurmaken.nl/factuur-voorbeeld/timmerman.md): Sample invoice for a carpenter.
- [Factuur voorbeeld loodgieter](https://eenfactuurmaken.nl/factuur-voorbeeld/loodgieter.md): Sample invoice for a plumber.
- [Factuur voorbeeld hovenier](https://eenfactuurmaken.nl/factuur-voorbeeld/hovenier.md): Sample invoice for a gardener.
- [Factuur voorbeeld schoonmaak](https://eenfactuurmaken.nl/factuur-voorbeeld/schoonmaak.md): Sample invoice for cleaning services.
- [Factuur voorbeeld fotograaf](https://eenfactuurmaken.nl/factuur-voorbeeld/fotograaf.md): Sample invoice for a photographer.
- [Factuur voorbeeld webdesigner](https://eenfactuurmaken.nl/factuur-voorbeeld/webdesigner.md): Sample invoice for a web designer / developer.
- [Factuur voorbeeld consultant](https://eenfactuurmaken.nl/factuur-voorbeeld/consultant.md): Sample invoice for a consultant (day rate plus expenses).
- [Factuur voorbeeld coach](https://eenfactuurmaken.nl/factuur-voorbeeld/coach.md): Sample invoice for a coach.
- [Factuur voorbeeld vertaler](https://eenfactuurmaken.nl/factuur-voorbeeld/vertaler.md): Sample invoice for a translator (per word, also for foreign clients).
- [Wat moet er op een factuur?](https://eenfactuurmaken.nl/gids/wat-moet-er-op-een-factuur.md): What must be on a Dutch invoice: every mandatory field and the exceptions.
- [Factuurnummer: regels en voorbeelden](https://eenfactuurmaken.nl/gids/factuurnummer.md): Invoice numbering rules in the Netherlands, with examples.
- [Factuur versturen](https://eenfactuurmaken.nl/gids/factuur-versturen.md): How to send an invoice: email, PDF or e-invoice.
- [Bewaarplicht facturen](https://eenfactuurmaken.nl/gids/bewaarplicht-facturen.md): How long Dutch businesses must keep invoices (bewaarplicht) and in which form.
- [Btw verlegd: betekenis en wanneer](https://eenfactuurmaken.nl/gids/btw-verlegd.md): The Dutch reverse charge (btw verlegd): meaning, when it applies and the invoice note.
- [KOR: factureren zonder btw](https://eenfactuurmaken.nl/gids/kor.md): The Dutch small business scheme (KOR) and what it means for your invoices.
- [Factureren naar het buitenland](https://eenfactuurmaken.nl/gids/factuur-buitenland.md): Invoicing foreign customers: intra-EU supplies, reverse charge and export.
- [Proforma factuur](https://eenfactuurmaken.nl/gids/proforma-factuur.md): What a pro forma invoice is, when to use it and what is on it.
- [Creditnota](https://eenfactuurmaken.nl/gids/creditnota.md): Credit notes (creditnota / creditfactuur): meaning, rules and an example.
- [Offerte maken](https://eenfactuurmaken.nl/gids/offerte-maken.md): How to make a quote (offerte): contents, validity and an example.
- [Kwitantie](https://eenfactuurmaken.nl/gids/kwitantie.md): What a receipt (kwitantie) is, what is on it and how to make one.
- [Pakbon](https://eenfactuurmaken.nl/gids/pakbon.md): What a packing slip (pakbon) is and how it differs from an invoice.
- [Betalingstermijn](https://eenfactuurmaken.nl/gids/betalingstermijn.md): Payment terms in the Netherlands: what you may agree and the statutory rules.
- [Betalingsherinnering sturen](https://eenfactuurmaken.nl/gids/betalingsherinnering.md): How to send a payment reminder, with a sample text.
- [Aanmaning en 14-dagenbrief](https://eenfactuurmaken.nl/gids/aanmaning.md): Dunning letters and the Dutch 14-day letter: rules, collection costs and an example.
- [Betalingskenmerk](https://eenfactuurmaken.nl/begrippen/betalingskenmerk.md): Payment reference (betalingskenmerk) explained.
- [IBAN](https://eenfactuurmaken.nl/begrippen/iban.md): IBAN explained.
- [BIC-code](https://eenfactuurmaken.nl/begrippen/bic.md): BIC code explained, with the BIC of the main Dutch banks.
- [Vervaldatum](https://eenfactuurmaken.nl/begrippen/vervaldatum.md): Due date (vervaldatum) explained.
- [Debiteur](https://eenfactuurmaken.nl/begrippen/debiteur.md): Debtor (debiteur) and accounts receivable explained.
- [Crediteur](https://eenfactuurmaken.nl/begrippen/crediteur.md): Creditor (crediteur) explained.
- [KvK-nummer](https://eenfactuurmaken.nl/begrippen/kvk-nummer.md): Chamber of Commerce number (KvK-nummer) and why it is on invoices.
- [Btw-id](https://eenfactuurmaken.nl/begrippen/btw-id.md): VAT identification number (btw-id) versus the omzetbelastingnummer.
- [NAW-gegevens](https://eenfactuurmaken.nl/begrippen/naw-gegevens.md): NAW details (name, address, city) explained.
- [Factuurdatum](https://eenfactuurmaken.nl/begrippen/factuurdatum.md): Invoice date versus date of supply.
- [Verkoopfactuur](https://eenfactuurmaken.nl/begrippen/verkoopfactuur.md): Sales invoice (verkoopfactuur) explained.
- [Inkoopfactuur](https://eenfactuurmaken.nl/begrippen/inkoopfactuur.md): Purchase invoice (inkoopfactuur) explained.
- [Voorschotfactuur](https://eenfactuurmaken.nl/begrippen/voorschotfactuur.md): Advance invoice (voorschotfactuur) explained.
- [Factuur of faktuur?](https://eenfactuurmaken.nl/begrippen/factuur-of-faktuur.md): Spelling: factuur or faktuur.
- [UBL](https://eenfactuurmaken.nl/begrippen/ubl.md): UBL (Universal Business Language) e-invoice format explained.
- [ICP](https://eenfactuurmaken.nl/begrippen/icp.md): Intra-Community supplies (ICP) explained.
- [G-rekening](https://eenfactuurmaken.nl/begrippen/g-rekening.md): G-account (G-rekening) in construction and staffing explained.
- [Btw berekenen](https://eenfactuurmaken.nl/btw-berekenen.md): Free Dutch VAT calculator: add VAT, remove VAT, 21% and 9%, with the formulas.

## API and AI

- [OpenAPI 3.1 spec](https://eenfactuurmaken.nl/api/v1/openapi.json): machine-readable description of the REST API v1 (authenticate with `Authorization: Bearer efm_…`).
- [MCP server](https://eenfactuurmaken.nl/docs/mcp.md): Streamable HTTP endpoint https://eenfactuurmaken.nl/mcp with tools to manage customers, products and invoices.
- [Prompt library](https://eenfactuurmaken.nl/docs/prompts.md): ready-made prompts for ChatGPT, Claude, Gemini and Copilot.
- [Full text](https://eenfactuurmaken.nl/llms-full.txt): the key pages concatenated into one Markdown file.

## English

- [Home](https://eenfactuurmaken.nl/en/index.md): What EenFactuurMaken.nl is: simple Dutch invoicing, free for 5 invoices a month, Pro for €7/month.
- [Features](https://eenfactuurmaken.nl/en/features.md): All features: Dutch invoice requirements (KvK, btw, btw verlegd, KOR, ICP), numbering, credit notes, reminders, EPC QR, UBL.
- [Pricing](https://eenfactuurmaken.nl/en/pricing.md): Free and Pro plans (prices excl. VAT, monthly or yearly), what counts towards the free limit, the Free vs Pro comparison table and the pricing FAQ.
- [E-invoicing (UBL / Peppol)](https://eenfactuurmaken.nl/en/e-invoicing.md): What UBL and Peppol BIS Billing 3.0 / NLCIUS are, and what EenFactuurMaken.nl generates.
- [AI](https://eenfactuurmaken.nl/en/ai.md): Control your invoices from an AI assistant: REST API, MCP server, Markdown pages, llms.txt and prompts.
- [Free invoice generator](https://eenfactuurmaken.nl/en/invoice-generator.md): Make a Dutch invoice PDF in the browser without an account: logo, colours, VAT, KOR and reverse charge. Nothing is sent to the server.
- [Security](https://eenfactuurmaken.nl/en/security.md): EU hosting in Germany, passkeys, 2FA, tenant isolation, backups and responsible disclosure.
- [Documentation](https://eenfactuurmaken.nl/en/docs.md): Start here: how the documentation is organised and the fastest route to your first invoice.
- [Create and secure your account](https://eenfactuurmaken.nl/en/docs/getting-started/account.md): Sign up, verify your email address, sign in and secure the account with 2FA or a passkey.
- [The welcome guide (onboarding)](https://eenfactuurmaken.nl/en/docs/getting-started/onboarding.md): The guided setup after sign-up: business details, house style, first customer and how to create an invoice.
- [Business details](https://eenfactuurmaken.nl/en/docs/getting-started/business-details.md): KvK number, VAT number (btw-id), address, IBAN, Peppol ID, logo and "not in the Handelsregister".
- [Your first invoice](https://eenfactuurmaken.nl/en/docs/getting-started/first-invoice.md): Step by step from an empty draft to an issued, emailed invoice.
- [Free invoice generator (no account)](https://eenfactuurmaken.nl/en/docs/getting-started/free-invoice-generator.md): Make a one-off invoice PDF on the website without an account: logo, colours, nothing stored on our servers.
- [Create an invoice](https://eenfactuurmaken.nl/en/docs/invoices/create.md): Invoice lines, quantities, units, discounts, VAT rates, dates, references, notes and invoice language.
- [Drafts and issuing](https://eenfactuurmaken.nl/en/docs/invoices/issue.md): What a draft is, what happens when you issue an invoice and what gets frozen.
- [Invoice numbering](https://eenfactuurmaken.nl/en/docs/invoices/numbering.md): Gap-free numbering, format tokens {YYYY} {YY} {MM} {SEQ} {SEQ:n}, yearly reset and choosing your own number.
- [Invoice checks (Dutch requirements)](https://eenfactuurmaken.nl/en/docs/invoices/checks.md): Every check EenFactuurMaken.nl runs before issuing (art. 35a Wet OB), what it means and how to fix it.
- [Currencies and exchange rates](https://eenfactuurmaken.nl/en/docs/invoices/currencies.md): Invoicing in USD, GBP and other currencies: ECB rates, manual rates and VAT in euros.
- [Sending invoices by email](https://eenfactuurmaken.nl/en/docs/invoices/sending.md): Email an invoice with PDF and UBL, default texts and placeholders, limits and recipients on Free.
- [Online invoice link and viewed status](https://eenfactuurmaken.nl/en/docs/invoices/online-invoice.md): The public "view online" page for your customer, viewed tracking, new link or switching it off.
- [Payments and invoice status](https://eenfactuurmaken.nl/en/docs/invoices/payments.md): Statuses, overdue, marking paid or unpaid, the EPC payment QR code and payment links.
- [Copy, cancel or delete an invoice](https://eenfactuurmaken.nl/en/docs/invoices/copy-cancel-delete.md): Duplicate an invoice, delete a draft, cancel an issued invoice and when to use a credit note instead.
- [PDF and e-invoice (UBL / Peppol)](https://eenfactuurmaken.nl/en/docs/invoices/pdf-and-ubl.md): Download the PDF and the UBL 2.1 e-invoice (Peppol BIS Billing 3.0 / NLCIUS), file names and languages.
- [Choosing a VAT treatment](https://eenfactuurmaken.nl/en/docs/vat/treatments.md): Overview of standard VAT, reverse charge, intra-EU, export, KOR and exempt, and which one to choose.
- [Domestic reverse charge (btw verlegd)](https://eenfactuurmaken.nl/en/docs/vat/reverse-charge.md): When VAT is reverse-charged within the Netherlands (e.g. subcontracting) and what goes on the invoice.
- [EU business customers (ICP and reverse charge)](https://eenfactuurmaken.nl/en/docs/vat/eu-customers.md): Intra-Community supplies of goods (0%) and services (reverse charge), VAT numbers and the ICP return.
- [Customers outside the EU (export)](https://eenfactuurmaken.nl/en/docs/vat/export.md): Export of goods (0%) and services outside the scope of Dutch VAT, and the exception for consumers.
- [KOR: small business scheme](https://eenfactuurmaken.nl/en/docs/vat/kor.md): Invoicing under the kleineondernemersregeling: no VAT anywhere on the invoice, only the KOR note.
- [VAT-exempt supplies](https://eenfactuurmaken.nl/en/docs/vat/exempt.md): Exempt supplies (healthcare, education, …) and how to print the legal basis of the exemption.
- [VIES VAT number check](https://eenfactuurmaken.nl/en/docs/vat/vies.md): How EenFactuurMaken.nl checks customer VAT numbers in VIES and stores the result as evidence.
- [VAT overview for the Dutch VAT return](https://eenfactuurmaken.nl/en/docs/vat/vat-return.md): The VAT overview per quarter, mapped onto the rubrieken of the btw-aangifte (1a, 1b, 1e, 3a, 3b).
- [Credit notes (creditnota)](https://eenfactuurmaken.nl/en/docs/credit-notes.md): Full and partial credit notes, crediting an invoice made outside EenFactuurMaken.nl, numbering and VAT.
- [Payment reminders](https://eenfactuurmaken.nl/en/docs/reminders.md): Manual reminders on every plan, automatic reminders on Pro, the schedule and the reminder levels.
- [Statutory collection costs (WIK)](https://eenfactuurmaken.nl/en/docs/reminders/collection-costs.md): The final notice (14-day letter) and how the statutory collection costs are calculated.
- [Customers](https://eenfactuurmaken.nl/en/docs/customers.md): Business and private customers, addresses, VAT numbers, defaults per customer, archiving and limits.
- [Products and services](https://eenfactuurmaken.nl/en/docs/products.md): Save products and services with price, unit and VAT rate and pick them on invoice lines.
- [Logo, colours and invoice styles](https://eenfactuurmaken.nl/en/docs/layouts.md): What every plan can change: logo, colours and the three invoice styles, plus the payment QR and link.
- [Saved templates (Pro)](https://eenfactuurmaken.nl/en/docs/layouts/templates.md): Pro: several saved house styles with fonts, header and footer texts, label overrides and page size.
- [Recurring invoices](https://eenfactuurmaken.nl/en/docs/recurring.md): Pro: invoices created, issued and emailed automatically every week, month, quarter or year.
- [Sending from your own email domain](https://eenfactuurmaken.nl/en/docs/email-domain.md): Pro: send from facturen@yourcompany.nl with DKIM, SPF and DMARC, step by step for TransIP, Cloudflare and others.
- [Storage periods and the 7-year retention duty](https://eenfactuurmaken.nl/en/docs/retention.md): Free keeps invoices for 60 days with warnings and downloads; Pro keeps them for 7 years.
- [ZIP export for your accountant](https://eenfactuurmaken.nl/en/docs/export.md): Download PDFs, UBL files and a CSV overview as one ZIP (Pro), or the soon-to-be-deleted invoices (every plan).
- [Free and Pro plans](https://eenfactuurmaken.nl/en/docs/billing/plans.md): What the Free and Pro plans include, prices incl. and excl. VAT and the limits of the free plan.
- [Upgrading, paying and cancelling](https://eenfactuurmaken.nl/en/docs/billing/subscription.md): Upgrade to Pro, payment methods, our invoices, switching interval, cancelling, resuming and downgrading.
- [Two-factor authentication and passkeys](https://eenfactuurmaken.nl/en/docs/security/two-factor.md): Authenticator app (TOTP), email codes, backup codes and passkeys.
- [Signed-in devices and the security log](https://eenfactuurmaken.nl/en/docs/security/sessions.md): See and sign out devices, the security log and the emails we send about your account.
- [API keys and connected apps](https://eenfactuurmaken.nl/en/docs/security/api-keys.md): Create, use and revoke API keys, and disconnect AI apps connected with OAuth.
- [Change email, password or delete your account](https://eenfactuurmaken.nl/en/docs/security/account.md): Change your name, language, email address or password, and delete your account.
- [Privacy, hosting and data](https://eenfactuurmaken.nl/en/docs/security/privacy.md): EU hosting in Germany, what we store, no tracking cookies, and what happens with your data.
- [REST API: introduction](https://eenfactuurmaken.nl/en/docs/api.md): Quick start for the REST API v1: base URL, your first request and what you can do.
- [REST API: authentication](https://eenfactuurmaken.nl/en/docs/api/authentication.md): API keys (Bearer or X-API-Key), what a key may and may not do, and keeping keys safe.
- [REST API: formats and pagination](https://eenfactuurmaken.nl/en/docs/api/conventions.md): JSON, money in cents, decimals, dates, pagination, filtering, sorting and PATCH semantics.
- [REST API: errors and rate limits](https://eenfactuurmaken.nl/en/docs/api/errors.md): Error format, every error code, rate limits, plan limits and retry advice.
- [REST API: recipes and examples](https://eenfactuurmaken.nl/en/docs/api/guides.md): End-to-end curl examples: create, check, issue, email, credit, payments, VAT data and polling patterns.
- [REST API: endpoint reference](https://eenfactuurmaken.nl/en/docs/api/reference.md): Every endpoint with parameters, request body, response and examples, generated from the OpenAPI 3.1 spec.
- [MCP server](https://eenfactuurmaken.nl/en/docs/mcp.md): Connect an AI assistant to your invoices: OAuth or API key, what the assistant can do and safety.
- [Connect ChatGPT](https://eenfactuurmaken.nl/en/docs/mcp/chatgpt.md): Add EenFactuurMaken.nl as a connector in ChatGPT (developer mode, OAuth).
- [Connect Claude (web, Desktop, Code)](https://eenfactuurmaken.nl/en/docs/mcp/claude.md): Connect Claude.ai, Claude Desktop and Claude Code to EenFactuurMaken.nl.
- [Connect Cursor](https://eenfactuurmaken.nl/en/docs/mcp/cursor.md): Add the EenFactuurMaken.nl MCP server to Cursor with an API key.
- [Connect Gemini CLI](https://eenfactuurmaken.nl/en/docs/mcp/gemini-cli.md): Add the EenFactuurMaken.nl MCP server to Gemini CLI (OAuth or API key).
- [Connect GitHub Copilot in VS Code](https://eenfactuurmaken.nl/en/docs/mcp/vscode.md): Use EenFactuurMaken.nl in Copilot Chat agent mode with .vscode/mcp.json.
- [MCP tools, resources and prompts](https://eenfactuurmaken.nl/en/docs/mcp/tools.md): Every MCP tool with what it does and an example request, plus resources and built-in prompts.
- [Prompt library](https://eenfactuurmaken.nl/en/docs/prompts.md): Copy-paste prompts for creating invoices, reminders, VAT overviews and building integrations.
- [Markdown pages and llms.txt](https://eenfactuurmaken.nl/en/docs/ai/markdown.md): Every public page as Markdown (.md or Accept: text/markdown), llms.txt and llms-full.txt for AI tools.
- [Frequently asked questions](https://eenfactuurmaken.nl/en/docs/faq.md): Short answers to the questions we get most about invoices, VAT, plans and data.
- [Troubleshooting](https://eenfactuurmaken.nl/en/docs/troubleshooting.md): Solutions for common problems: issuing blocked, email not arriving, limits, DNS, API and MCP errors.

## Optional

- [About](https://eenfactuurmaken.nl/about.md): Who builds EenFactuurMaken.nl and why.
- [Contact](https://eenfactuurmaken.nl/contact.md): Support, security and business contact details.
- [Privacy statement](https://eenfactuurmaken.nl/legal/privacy.md): GDPR privacy statement: data categories, processors, retention and your rights.
- [Terms of service](https://eenfactuurmaken.nl/legal/terms.md): Terms of service (algemene voorwaarden).
- [Data processing agreement](https://eenfactuurmaken.nl/legal/dpa.md): Data processing agreement (verwerkersovereenkomst) for the customer data you store.
- [Cookie statement](https://eenfactuurmaken.nl/legal/cookies.md): Only functional cookies, no tracking.