e-Boekhouden integration
Your e-Boekhouden records, filled in automatically from your sales
slimzaak isn't a replacement for e-Boekhouden - it's the invoicing and admin layer that sits in front of it. When you sell through bol.com, Amazon, Shopify, or WooCommerce, slimzaak turns those orders into VAT-compliant invoices automatically, and reads incoming receipts with AI scanning the moment they arrive. Once you connect e-Boekhouden (via OAuth2), slimzaak pushes all of that straight into your books, with nothing left to type in by hand. You or your accountant simply check the result and file the VAT return yourselves, directly from e-Boekhouden.
- 01
Connecting
Connected in a few minutes via OAuth2
You connect slimzaak to your e-Boekhouden account through a secure OAuth2 connection. Log in to e-Boekhouden, grant slimzaak access, and the connection is live. There's no manual export or import involved, and you won't need to look up or copy any API keys - from that point on, syncing runs automatically in the background, with nothing left for you to keep an eye on.
- Secure OAuth2 connection, no API keys to copy
- Connection active within minutes
- No manual export or import needed
- Syncing runs automatically in the background
- 02
Syncing
Customers, sales invoices, and expenses kept up to date automatically
Once the connection is active, slimzaak syncs automatically with your e-Boekhouden account. New customers and contacts are created for you, sales invoices come in as sales entries, and expenses and receipts - already read automatically by slimzaak's AI receipt scan - are pushed through as purchase entries. There's nothing left to type in or export yourself; your e-Boekhouden records simply stay in step with what's happening in slimzaak.
- Customers and contacts created automatically in e-Boekhouden
- Sales invoices posted automatically as sales entries
- Expenses and receipts (AI scan) posted automatically as purchase entries
- No more manually retyping your bookkeeping
- 03
VAT return
VAT data prepared for you, you file it yourself
slimzaak automatically prepares your VAT return data in e-Boekhouden, based on your sales invoices and expenses. You or your accountant check that data and then file the return with the Dutch Tax Administration yourselves, directly from e-Boekhouden. slimzaak never files anything on its own - that stays in your hands or your accountant's, exactly as it should be with the Tax Administration.
- VAT return data prepared automatically in e-Boekhouden
- You or your accountant file with the Tax Administration, from e-Boekhouden
- slimzaak never files anything with the Tax Administration itself
Btw & OSSFrequently asked questions
Does slimzaak replace e-Boekhouden?
No. slimzaak is the invoicing and admin tool that automatically turns your orders from bol.com, Amazon, Shopify, and WooCommerce into invoices, and reads your receipts with AI scanning. slimzaak then pushes all of that automatically into your e-Boekhouden account; e-Boekhouden stays your bookkeeping software, unchanged.
How do I connect e-Boekhouden to slimzaak?
You connect through a secure OAuth2 connection: log in to e-Boekhouden, grant slimzaak access, and the connection is live within minutes. From there, slimzaak syncs automatically, with no manual export or import.
What exactly does slimzaak sync with e-Boekhouden?
slimzaak automatically syncs your customers and contacts, your sales invoices as sales entries, and your expenses and receipts - already read by the AI receipt scan - as purchase entries. Your VAT return data is also prepared for you in e-Boekhouden.
Does slimzaak file my VAT return with the Tax Administration?
No. slimzaak automatically prepares the VAT return data in e-Boekhouden, but never files anything itself. You or your accountant check the data and file the return from e-Boekhouden yourselves.
Connect e-Boekhouden and let slimzaak handle the rest
Connect your e-Boekhouden account to slimzaak and watch your customers, invoices, and expenses sync automatically.
Free plan available · No credit card required