slimzaak
OTTO Market integration

Accounting for OTTO Market sellers, without the manual work

slimzaak connects directly to your OTTO Market seller account. The moment an order comes in, slimzaak automatically creates a VAT-compliant invoice, sends it to your customer, and archives it in your records. If you sell from the Netherlands to Germany, slimzaak automatically applies Dutch VAT rules and the EU OSS scheme. That way, as an OTTO seller, you stay in control of your invoicing, VAT, and payouts without any manual work.

Start for free
OTTOslimzaak

Orders come in, VAT-ready invoices go out.

OTTOVAT

OTTO → slimzaak → VAT

  1. 01

    Invoicing

    Every OTTO order invoiced automatically

    You connect your OTTO Market seller account directly to slimzaak. The moment an order comes in, a VAT-compliant invoice is automatically created, sent to your customer, and archived in your records. If a return comes in, slimzaak automatically turns it into a credit note, so your books always add up without you having to update anything yourself.

    • Direct connection to your OTTO Market seller account
    • Invoices automatically created, sent, and archived
    • Credit notes generated automatically for returns
    • Your own branding via the template designer
  2. 02

    VAT & OSS

    VAT-compliant selling from the Netherlands to Germany

    OTTO Market is Germany's largest marketplace after Amazon, making it a popular channel for Dutch sellers looking to expand across the border. Selling from the Netherlands to German customers brings cross-border VAT into play. slimzaak applies Dutch VAT rules and supports the EU OSS scheme (One Stop Shop), so your invoices are correct and ready for your VAT return.

    • Dutch VAT rules applied automatically
    • EU OSS support for sales to Germany
    • VAT summaries ready for your return
    • No manual VAT calculation per order
  3. 03

    Payouts

    Payouts reconciled automatically

    OTTO Market pays out periodically, after deducting commission and other fees. slimzaak automatically reconciles these payouts against your invoices and costs, so you can see at a glance what you sold, what OTTO withheld, and what was actually paid out.

    • Payouts matched to the corresponding invoices
    • Fees and commissions processed automatically
    • Always an up-to-date view of your margin
slimzaakBtw & OSS
OSS-regeling actief
Nederland21%€ 2.140
Duitsland19%€ 880
België21%€ 410
Aangifte Q2 € 3.430
slimzaakFactuur

Factuur 2026-0455

Sanne Bakker · 17 mei 2026

Betaald
Keramische mok — 2×€ 50,00
Verzendkosten€ 4,95
Btw 21%€ 11,54
Totaal€ 66,49

Frequently asked questions

How do I connect my OTTO Market account to slimzaak?
You connect your OTTO Market seller account directly to slimzaak. From that moment on, new orders are automatically turned into VAT-compliant invoices, which slimzaak sends to your customer and archives in your records.
How does VAT work when I sell from the Netherlands to Germany via OTTO?
slimzaak applies Dutch VAT rules and supports the EU OSS scheme as soon as you sell to customers in Germany. That means you don't have to work out which VAT rate applies yourself, and your invoices are ready for your VAT return.
What happens with returns on OTTO Market?
slimzaak automatically processes returns as a credit note, linked to the original invoice. Your books stay accurate at all times, without you having to make any changes yourself.
What does slimzaak cost for OTTO Market sellers?
You start for free, no credit card required, with up to 250 invoices per month. If you want automatic invoicing with a store integration like OTTO Market, you'll need the Starter plan, starting at 9 euros per month.

More on this topic

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Automate your OTTO Market administration

Connect your OTTO Market account and let slimzaak handle your invoicing, VAT, and payouts.

Start for free

Free plan available · No credit card required