Sebastian de Goeij
CEO and founder, Autoboeker
Sebastian de Goeij is CEO and founder of Autoboeker, the AI platform for accounting and bookkeeping firms within the Autus group.
Autoboeker started at Boekhoudvriend, the AI-native bookkeeping firm in the same group, where bookkeepers and tax advisers process the administrations of hundreds of entrepreneurs every day. Seeing how much time went into typing, sorting and chasing, he built the platform with the team that understands documents, matches bank transactions and sends client questions.
He writes the knowledge base guides on pre-accounting, AI processing, bank matching and the day-to-day practice of firms.
102 guides in the knowledge base
Approval before and after booking: getting invoices approved
Get invoices approved before or after booking: steps, one or all approvers, rules on amount and supplier and a full audit trail. How to set it up.
11 min readRead the guideWorkflowsProcessing errors in Autoboeker: what they mean
What a processing error in Autoboeker means, per ledger, and how you fix the financial year, VAT code, rights and connection.
10 min readRead the guideWorkflowsSet the booking description in Autoboeker
How you set the booking description per administration, which variables you can use, and how that text lands on the open item in Exact Online.
8 min readRead the guideWorkflowsDraft or final booking in Autoboeker
Can Autoboeker send an invoice to Twinfield or Exact as a draft? No: processing is final, you can still edit afterwards, and review happens before booking.
7 min readRead the guideWorkflowsClear private or current-account payments in Autoboeker
How you clear a privately paid invoice or current account in Autoboeker, why that invoice leaves the Bank page, and what you see in Exact, Twinfield and SnelStart.
8 min readRead the guideWorkflowsInclusive and exclusive VAT codes in Autoboeker
Why two VAT codes with the same name make the total mismatch, how you switch the inclusive code off, and how Autoboeker checks subtotal, VAT and total.
7 min readRead the guideWorkflowsSwitch purchase or sales in Autoboeker
Can I change a document from purchase to sales? Yes, before processing at the top left. After processing you delete and queue the document again.
6 min readRead the guideWorkflowsSet client-question reminders in Autoboeker
How often the client gets a reminder, where you set the frequency, and why there is no push notification in the app.
7 min readRead the guideRegulationVAT-exempt or not VAT-registered in Autoboeker
What the VAT-exempt tick in Autoboeker does, how you set up a non-VAT administration, and why that tick does not switch VAT off.
8 min readRead the guideAccounting softwareReconnect your accounting software in Autoboeker
How you reconnect Exact Online, Twinfield, SnelStart or e-Boekhouden, what happens to administrations, and why SnelStart needs Accountant or InOrde.
8 min readRead the guideAccounting softwareTwinfield free text field 1 in Autoboeker
How you fill Twinfield free text field 1 per invoice or from a template, the 40-character limit, and what to do when you see 'Free text field 1 is not allowed'.
6 min readRead the guideRunning a firmHow Autoboeker counts bookings in your usage
What counts as a booking in Autoboeker, whether deleting lowers usage, and where you check usage per administration and period.
7 min readRead the guideRunning a firmTeam member cannot process bookings: how it works
Why a team member does not see Process, how Submit for review works, and how you let a client book without client-dashboard rights.
7 min readRead the guideFundamentalsOCR, templates or AI: which invoice recognition fits your firm?
OCR, templates and AI invoice recognition compared: how they work, what they deliver, how much maintenance they need and when each approach fits.
7 min readRead the guideFundamentalsHow does AI learn to book? An explanation for accountants
How AI learns how an administration is booked: history, corrections, rules and instructions, and what that means for new clients, exceptions and review.
7 min readRead the guideFundamentalsChatGPT in bookkeeping: what works and what does not?
Can you use ChatGPT for bookkeeping or an accounting firm? Where general AI chatbots help, where they fall short and what to do with client data.
7 min readRead the guideFundamentalsAI agents in accountancy: what is agentic AI?
What an AI agent or agentic AI is in accountancy, what an AI bookkeeping agent can do on its own and how to stay in control, with Atlas as the example.
6 min readRead the guideFundamentalsAI instructions and prompt library: teach the AI your workflow
Capture working agreements as plain-language AI instructions: examples, per administration or firm-wide, and 139 example instructions in the prompt library.
6 min readRead the guideFundamentalsCan Autoboeker do this? Frequently asked questions
Answers to the questions firms ask most: how Autoboeker books, what it can and cannot do, per accounting package, and where you set it up.
14 min readRead the guideWorkflowsAutomating invoice processing: a step-by-step plan for firms
Automate invoice processing in seven steps: from delivery and recognition to automatic booking on confidence. With pitfalls, KPIs and a checklist.
9 min readRead the guideWorkflowsPreventing and detecting duplicate invoices in the books
How duplicate invoices arise, what missing them costs and how to detect them automatically, with checks on invoice number, amount, supplier and IBAN.
6 min readRead the guideWorkflowsProcessing invoices from email automatically: how to set it up
Have invoices from the mailbox processed automatically: a purchase email address per administration, Gmail and Outlook connections and what happens next.
6 min readRead the guideWorkflowsDigitising receipts: how to get clients on board
Digitising receipts for your firm's clients: app, WhatsApp or email, what happens to a receipt photo and how to request missing receipts automatically.
6 min readRead the guideWorkflowsAutomating bank reconciliation: from bank statement to balance
Automating bank reconciliation for firms: how bank data arrives (PSD2, CAMT.053, MT940), how AI matches and reconciles and how the bank balances faster.
8 min readRead the guideWorkflowsResolving unexplained bank transactions
What to do with bank transactions without an invoice or receipt, why a full suspense account slows month end and how to request unexplained items automatically.
6 min readRead the guideWorkflowsReconciling partial payments, credit notes and combined payments
How to reconcile partial payments, credit notes, payment arrangements and foreign currency payments, and what AI bank matching recognises automatically.
6 min readRead the guideWorkflowsBooking payments via Mollie, Stripe and PayPal: how it works
How to book payments via Mollie, Stripe and PayPal: payouts, transaction fees, a clearing account per payment provider and what Autoboeker matches automatically.
6 min readRead the guideWorkflowsBooking accruals and deferrals: prepaid and accrued costs
What accruals and deferrals are, when to book them and how to spread an annual invoice over periods, with examples and how AI handles them.
7 min readRead the guideWorkflowsBooking cost centres, cost units and projects automatically
The difference between cost centre, cost unit and project, why they matter for your client and how AI assigns them automatically when processing invoices.
7 min readRead the guideWorkflowsChecking subtotal, VAT and total: calculation errors on invoices
Why you recalculate subtotal, VAT and total on purchase invoices, which deviations occur and how AI checks every invoice automatically before booking.
5 min readRead the guideWorkflowsRecognising and creating new and existing suppliers
How AI recognises whether an invoice comes from an existing or new supplier, when contacts are created automatically and how to avoid duplicate contacts.
5 min readRead the guideWorkflowsReading payment terms: due date and early payment discount
Why payment terms on an invoice matter, how to record due dates and early payment discounts and how AI reads payment terms and flags deviations.
5 min readRead the guideWorkflowsLine-level booking: splitting, merging and allocating
When to book an invoice at line level, when to merge lines and how to allocate across GL accounts or by percentage, with examples.
6 min readRead the guideWorkflowsAutomating client questions: sending, following up and processing
Have client questions sent, followed up and processed automatically: from unknown payment to processed answer, with templates, status per client and history.
8 min readRead the guideWorkflowsRecurring invoices and subscriptions invoiced automatically
Invoice subscriptions and fixed jobs automatically with recurring invoices: set up once, created automatically, paid via iDEAL and booked straight away.
5 min readRead the guideWorkflowsConnecting Mollie for invoice payments via iDEAL
Connect Mollie to the invoicing module: invoices paid online via iDEAL and card, payment status updated automatically and payments processed automatically.
5 min readRead the guideWorkflowsCreating and booking a credit note correctly
When to create a credit note, what it must contain and how to book it, on purchase and sales side, matching with the original invoice and one-click credit notes.
5 min readRead the guideWorkflowsConnecting document sources: Gmail, Outlook, WhatsApp and cloud
Connect Gmail, Outlook, WhatsApp and cloud storage to every administration. Documents arrive at the right client automatically, without forwarding.
7 min readRead the guideWorkflowsSplit several invoices in one PDF or move a document
Can Autoboeker split a PDF with several invoices or move a document to another administration? Yes: how splitting, keeping pages together and moving work.
6 min readRead the guideWorkflowsChange or delete a processed booking: what happens in the ledger?
Changing or deleting a processed booking in Autoboeker: in Exact Online, Twinfield and SnelStart it syncs to the ledger, in e-Boekhouden it does not. How it works.
6 min readRead the guideWorkflowsPayment batch and SEPA bank file from Exact Online
Can Autoboeker prepare supplier payments? Yes, for Exact Online: select open payments, Exact creates the SEPA file and Autoboeker fetches it for download.
6 min readRead the guideWorkflowsForward invoices automatically: Connect, own address or Zapier
Getting invoices from Gmail or Outlook into Autoboeker automatically: with Connect, your own e-mail address with forwarding, or Zapier, Make and n8n. How to choose.
7 min readRead the guideWorkflowsSyncing with your accounting software: what, when and how often
How often does Autoboeker sync with Exact Online, Twinfield, SnelStart and e-Boekhouden? Master data, bank, mailbox and reports, and what to do when data is missing.
7 min readRead the guideRegulationChecking VAT numbers via VIES: why and when
Why you check VAT identification numbers via VIES, when it matters most and how Autoboeker checks VAT numbers automatically on every invoice.
6 min readRead the guideRegulationVAT rates on invoices: recognising 21%, 9%, 0% and reverse charge
How to recognise the right VAT rate on a purchase invoice: 21%, 9%, 0% or reverse charge, common mistakes and how AI checks VAT codes on every invoice.
7 min readRead the guideRegulationWithin the EU, outside the EU or exempt: how to book it
How to book invoices from suppliers inside and outside the EU and invoices in a VAT-exempt administration, the VAT treatment per situation and how AI detects it.
7 min readRead the guideRegulationBooking foreign currency invoices: rate and exchange difference
How to book an invoice in dollars or pounds, which rate to use, how exchange differences arise at payment and how AI detects and converts foreign currency.
6 min readRead the guideRegulationFixed asset or expense? Recognising investments when booking
When do you capitalise a purchase as a fixed asset and when do you book it as an expense? The €450 threshold, how Autoboeker flags investments and what you do next.
7 min readRead the guideRunning a firmMeasuring the automation rate: KPIs for pre-accounting
Which KPIs show whether pre-accounting works? Automation rate, correction rate, lead time and open client questions, and how to steer on them.
6 min readRead the guideRunning a firmPre-accounting software compared (2026): Basecone and more
Pre-accounting software compared in 2026: Autoboeker, Basecone, Zenvoices, TriFact365, Exact Scan Service and Yuki on model, features, software and pricing.
9 min readRead the guideRunning a firmSetting up the client portal and app for your firm's clients
What clients do in the portal and app, how to set permissions per user and which insights clients get. A practical setup guide for firms.
7 min readRead the guideRunning a firmQuotes and invoices in your own branding, booked instantly
Clients create quotes and invoices from their dashboard in their own branding. Sent is booked: no double entry. How invoicing works in Autoboeker.
8 min readRead the guideRunning a firmVAT analysis and VAT reports: real-time VAT position per client
Real-time VAT position per administration and period, VAT overview for your client and reports without exports. How VAT analysis helps before the return.
6 min readRead the guideRunning a firmTeam statistics and firm cockpit: see where the work is
Bookings, auto-booking rate and open client questions per team, person and administration, and how to use team statistics to steer capacity and lead time.
5 min readRead the guideRunning a firmConfiguration monitor: see which administrations miss settings
The configuration monitor shows which administrations lack settings or connections, so automation does not quietly stop. How to use it.
4 min readRead the guideRunning a firmWebhooks per administration: connecting external systems
With webhooks per administration you receive events, such as a sales invoice marked as paid. Useful with an external invoicing package or your own system.
4 min readRead the guideRunning a firmCan my client book in Autoboeker? Roles and client dashboard
What a client can do in the client dashboard and app, and how to let a client book anyway: roles, creating client users and differences per accounting package.
6 min readRead the guideSecurity & privacyIBAN checks on invoices: spotting invoice fraud
Why a changed IBAN on an invoice is a red flag, how invoice fraud works and how automatic IBAN checks and alerts help prevent it.
6 min readRead the guideSecurity & privacyRoles, permissions and audit logs in pre-accounting
Who sees which administrations, who may approve what and how to log every action by people and AI. Roles, permissions and audit logs for accounting firms.
6 min readRead the guideFundamentalsWhat is a client question (vraagpost) in bookkeeping?
A vraagpost is a transaction or document the firm needs information about from the client. What it is, where it comes from and how to resolve it quickly.
5 min readRead the guideFundamentalsWhat is OCR and how does it work with invoices?
OCR turns a scanned or photographed invoice into text. How it works, where it falls short and what template-free AI recognition adds.
6 min readRead the guideWorkflowsInvoice date vs booking date explained
What is the difference between invoice date, delivery date, booking date and due date? Why it matters for VAT returns, periods and payment terms.
6 min readRead the guideWorkflowsProcessing invoices with discounts: booking it right
Discount on the invoice, early-payment discount, credit note or rebate afterwards: how to book each kind, what it does to VAT and how to reconcile the payment.
6 min readRead the guideWorkflowsWhich invoices does AI book automatically, and which not?
AI books invoices automatically when confidence is high enough. Which invoices that usually means, which go to review, and how you set the threshold yourself.
6 min readRead the guideWorkflowsReviewing automatically booked invoices: how to do it
Automatic booking does not mean nobody looks. How to review automatically booked invoices: sampling, exceptions, corrections and the audit trail.
6 min readRead the guideWorkflowsProcessing invoices with multiple VAT rates
An invoice with 21%, 9% and 0% VAT is booked per rate. How to split lines, avoid rounding differences and check that the VAT is right.
5 min readRead the guideWorkflowsAllocating indirect costs in the books
Indirect costs such as rent, energy and software are allocated to departments, projects or locations. Methods, allocation keys and booking them consistently.
5 min readRead the guideWorkflowsInvoice validation with AI: what can you automate?
Which purchase invoice checks can AI automate? Totals, VAT, VAT number, IBAN, duplicates and document type, and what still needs a person.
6 min readRead the guideRegulationProcessing non-deductible VAT in the books
When is VAT not deductible and how do you book it? Exempt revenue, private use, entertainment and mixed use, with the right VAT code and GL account.
6 min readRead the guideSecurity & privacyWhat does an audit trail mean legally?
An audit trail is the control path from source document to booking. What the law asks about verifiability and retention, and what it means for AI bookkeeping.
7 min readRead the guideFundamentalsRGS explained: the Dutch reference chart of accounts
What the Dutch Referentie GrootboekSchema (RGS) is, why it exists, how levels and versions work and how a firm maps its administrations to RGS.
8 min readRead the guideFundamentalsChoosing pre-accounting software: a checklist for firms
Checklist for choosing pre-accounting software: ledger support, recognition, bank matching, client portal, security, pricing models and contract terms.
12 min readRead the guideFundamentalsAI in accounting: what it really does for firms today
What AI realistically does in accounting firms today: recognition, coding with confidence scores, matching and client questions, human control and the risks.
11 min readRead the guideWorkflowsProcessing purchase invoices: a complete guide for firms
How a firm processes purchase invoices: from intake and recognition to coding, checks, approval, booking and reconciliation. Manual, scanning or with AI.
12 min readRead the guideWorkflowsMonth-end close checklist for bookkeeping firms
Checklist for month-end and quarter-end close: all documents in, bank reconciled, suspense accounts cleared, accruals booked and VAT checked before filing.
10 min readRead the guideWorkflowsPreparing for year-end: getting the books in order
How to prepare year-end from the bookkeeping side: complete and reconciled books, open items, accruals, a VAT check and an audit trail for the accountant.
10 min readRead the guideWorkflowsClient questions (vraagposten): ready-to-use message templates
Ready-to-use client question messages: missing invoices and receipts, unknown payments, private or business, unclear VAT, and reminders after no response.
8 min readRead the guideRegulationMandatory e-invoicing in 2030: what should your firm know?
The Dutch cabinet plans mandatory e-invoicing from 1 July 2030 and reporting from 2031. What changes, what an e-invoice is, and what your firm can do now.
9 min readRead the guideRegulationReceiving and booking Peppol and UBL invoices: how it works
Peppol is the network, UBL the file format. How a firm receives e-invoices, what a Peppol ID is, and which booking decisions remain with an e-invoice.
8 min readRead the guideRegulationBooking reverse-charge VAT and foreign purchase invoices
Reverse charge, EU purchases, non-EU services and imports: which Dutch VAT return box (2a, 4a, 4b, 5b) applies, how to check VIES and what often goes wrong.
10 min readRead the guideRegulationRetention obligation and digital receipts: what to keep and how
The Dutch fiscal retention period is 7 years, 10 for real estate. What must you keep, may you scan and discard receipts, and what does it mean for intake?
8 min readRead the guideRegulationDutch tax authority invoice requirements: what must be on it?
All mandatory invoice details under Dutch tax rules, the simplified invoice up to €100, credit notes, and what to do when a purchase invoice is incomplete.
8 min readRead the guideRunning a firmCalculating the cost of pre-accounting: time, rate and licence
How to calculate what processing really costs your firm: time per document, hourly cost, cost per booking and licence models compared side by side.
9 min readRead the guideSecurity & privacyData security: a checklist for your software supplier
Which questions should you ask a software supplier that processes client financial data? A checklist for DPA, sub-processors, encryption, MFA, breaches and AI.
9 min readRead the guideSecurity & privacySharing client documents securely: how your firm sets it up
How firms and clients exchange documents securely: risks of email and chat apps, portals, access per user, retention, fake invoices and IBAN changes.
8 min readRead the guideFundamentalsWhat is pre-accounting? A guide for accounting firms
Pre-accounting is the groundwork before bookkeeping: collecting documents, coding, bank matching and asking clients for missing info. How it works, with AI.
9 min readRead the guideFundamentalsAutomatic booking with AI: how it works for firms
How automatic booking with AI works: recognition without templates, booking proposals with a confidence score and a threshold that decides what gets booked.
10 min readRead the guideWorkflowsBank matching and reconciliation: how to automate it
What bank matching and reconciliation are, how to link transactions to invoices and how AI matches on amount, reference, IBAN, contact and date with a score.
9 min readRead the guideWorkflowsHandling client questions (vraagposten): a firm workflow
How to handle client questions (vraagposten) efficiently: when they arise, how to ask, follow up and process them, and how a client portal replaces emails.
9 min readRead the guideWorkflowsAutomating VAT checks: how to prevent Dutch VAT errors
Automating VAT checks in pre-accounting: 21%, 9% and 0% rates, reverse charge, ICP and VIES checks, and how to catch VAT errors before the return is filed.
10 min readRead the guideWorkflowsCollecting documents from clients: getting delivery in order
How to get invoices and receipts from clients faster: delivery channels, agreements per client and automatic collection from email, WhatsApp and cloud storage.
9 min readRead the guideWorkflowsSetting a confidence threshold: how much should AI book?
How to set a confidence threshold for automatic booking: score and threshold explained, the three automation levels and a phased approach per administration.
8 min readRead the guideWorkflowsAdministration rules and global rules in pre-accounting
The difference between administration rules and global rules, when to use which, and how to record working agreements as a rule or AI instruction for your firm.
9 min readRead the guideAccounting softwareAutomating Exact Online: AI booking and bank matching
How to automate pre-accounting in Exact Online: AI booking proposals, bank matching, reconciliation, client questions and VAT analysis from one environment.
8 min readRead the guideAccounting softwareAutomating Twinfield: AI processing and bank matching
How to automate pre-accounting in Twinfield: book invoices with AI, match and reconcile bank transactions, include dimensions and send client questions.
7 min readRead the guideAccounting softwareAutomating SnelStart: process invoices and bank with AI
How to automate pre-accounting in SnelStart: AI booking proposals, bank matching, automatic reconciliation, client questions and fetching SnelStart documents.
7 min readRead the guideAccounting softwareAutomating e-Boekhouden: book invoices with AI
How to automate pre-accounting in e-Boekhouden: connect with API credentials, book invoices automatically and send client questions. Plus what isn't possible.
7 min readRead the guideRunning a firmSwitching to Autoboeker from Basecone, Zenvoices or Exact
Switching from Basecone, Zenvoices, Exact Scan Service or manual booking to Autoboeker? What changes, what it costs and how the switch works step by step.
9 min readRead the guideRunning a firmGetting clients on board with the client portal
How to get clients on board with the client portal: submit via app, email or WhatsApp, answer client questions and follow the figures, without loose emails.
8 min readRead the guideRunning a firmIncreasing your bookkeeping firm's capacity with AI
How to increase your bookkeeping firm's capacity without extra staff: automate processing, bank matching and client questions, and manage by exception.
8 min readRead the guideRunning a firmOffering invoicing to clients as a bookkeeping firm
How to offer invoicing to clients: invoices and quotes from the client portal, iDEAL via Mollie, an EPC QR code and every invoice booked into the ledger.
7 min readRead the guideSecurity & privacyAI and the GDPR in accountancy: what to look out for
Using AI in your accounting firm and complying with the GDPR (AVG): what to agree with an AI supplier, how Autoboeker handles data and how you stay in control.
8 min readRead the guideSee Autoboeker in your own administrations.
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