Billdu + KudTax
Export booking-ready e-commerce data directly into Billdu – seamlessly transfer journal entries, tax keys, contra accounts and digital document attachments.
Billdu is aimed at sole traders and very small businesses — often small-business filers under § 19 UStG who prepare a cash-basis income statement. Different rules apply there: no VAT on the invoice, no input tax deduction, and what governs is the date of payment rather than the date of the invoice.
How Billdu works with KudTax
01
Connect sales & payment channels
Connect your marketplaces, shops and payment providers (Amazon, Shopify, Stripe, PayPal) to KudTax.
02
AI reconciliation & tax mapping
KudTax processes transactions into GoBD-compliant entries using your client's custom chart of accounts (SKR03 / SKR04).
03
Generate Billdu-compliant export
Creates structured EXTF / CSV posting files complete with document fields, tax keys and document image links.
04
Direct import into Billdu
Import the error-free posting batch into Billdu or transfer it directly to your tax consultant.
What KudTax reads from Billdu
- Where the export lives
- Billdu → Documents → Invoices → Export, or the accounting export for the period
- What the portal calls the file
- Invoice export
- Formats
- CSVPDF
Line-item types recognised
- Outgoing invoices
- Payments received per invoice
- Expenses and receipts
- Credit notes
- Open items
What to watch for with Billdu
Cash-basis accounting counts the payment date
Cash-basis accounting records when money moves, not when the invoice was written. An invoice issued in December and paid in January belongs to the new year. Booking by invoice date shifts profit across the year end.
The small-business threshold runs alongside
Cross the turnover threshold and standard taxation applies from the following year, with VAT shown on every invoice. Without watching the running annual total this surfaces only once the new year's invoices have already gone out without tax.
Why connect Billdu with KudTax
Zero manual data entry
Eliminates spreadsheet copying and manual posting errors for tax firms and accounting teams.
Mapped chart of accounts
Fully customizable G/L accounts, contra accounts and tax keys matching SKR03 or SKR04.
Audit-proof Belegbild links
Embeds digital document links directly in journal entries for 100% GoBD compliance.
Error-free batch validation
Validates every line before export so batches import into Billdu without rejection logs.
Billdu integration – FAQ
Yes. The payment date governs, so income and expenses sit in the period the money actually moved.
Yes — the precondition for spotting the switch to standard taxation in time.
KudTax processes your e-commerce data and exports Billdu-compliant EXTF posting batches with digital document links directly for import into Billdu.
KudTax supports SKR03, SKR04 and custom client account charts mapped before export.
Automate your Billdu accounting today
Join the online sellers who let KudTax handle the numbers. Create a free account and connect Billdu in minutes.
